diff options
Diffstat (limited to 'package/openjdk7/patches')
| -rw-r--r-- | package/openjdk7/patches/openadk.patch | 6490 |
1 files changed, 6383 insertions, 107 deletions
diff --git a/package/openjdk7/patches/openadk.patch b/package/openjdk7/patches/openadk.patch index dd31ed5ba..3001aff5b 100644 --- a/package/openjdk7/patches/openadk.patch +++ b/package/openjdk7/patches/openadk.patch @@ -12,11 +12,39 @@ diff -Nur icedtea-2.4.7.orig/Makefile.in icedtea-2.4.7/Makefile.in patches/boot/demos.patch patches/boot/fphexconstants.patch \ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk.patch --- icedtea-2.4.7.orig/patches/openadk.patch 1970-01-01 01:00:00.000000000 +0100 -+++ icedtea-2.4.7/patches/openadk.patch 2014-05-08 21:02:03.459173373 +0200 -@@ -0,0 +1,733 @@ ++++ icedtea-2.4.7/patches/openadk.patch 2014-05-13 16:57:07.173804037 +0200 +@@ -0,0 +1,7009 @@ ++diff -Nur openjdk.orig/hotspot/make/linux/makefiles/zeroshark.make openjdk/hotspot/make/linux/makefiles/zeroshark.make ++--- openjdk.orig/hotspot/make/linux/makefiles/zeroshark.make 2014-02-20 19:51:45.000000000 +0100 +++++ openjdk/hotspot/make/linux/makefiles/zeroshark.make 2014-05-13 16:56:38.917714592 +0200 ++@@ -39,20 +39,20 @@ ++ ++ offsets_arm.s: mkoffsets ++ @echo Generating assembler offsets ++- ./mkoffsets > $@ +++ $(QEMU) ./mkoffsets > $@ ++ ++ bytecodes_arm.s: bytecodes_arm.def mkbc ++ @echo Generating ARM assembler bytecode sequences ++- $(CXX_COMPILE) -E -x c++ - < $< | ./mkbc - $@ $(COMPILE_DONE) +++ $(CXX_COMPILE) -E -x c++ - < $< | $(QEMU) ./mkbc - $@ $(COMPILE_DONE) ++ ++ mkbc: $(GAMMADIR)/tools/mkbc.c ++ @echo Compiling mkbc tool ++- $(CC_COMPILE) -o $@ $< $(COMPILE_DONE) +++ $(CC_COMPILE) -static -o $@ $< $(COMPILE_DONE) ++ ++ mkoffsets: asm_helper.cpp ++ @echo Compiling offset generator ++ $(QUIETLY) $(REMOVE_TARGET) ++- $(CXX_COMPILE) -DSTATIC_OFFSETS -o $@ $< $(COMPILE_DONE) +++ $(CXX_COMPILE) -static -DSTATIC_OFFSETS -o $@ $< $(COMPILE_DONE) ++ ++ endif ++ endif +diff -Nur openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp openjdk/hotspot/src/os/linux/vm/os_linux.cpp -+--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp 2014-01-28 18:58:08.000000000 +0100 -++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp 2014-02-10 11:31:48.000000000 +0100 ++--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp 2014-02-20 19:51:45.000000000 +0100 +++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp 2014-05-13 16:14:56.637091447 +0200 +@@ -112,7 +112,6 @@ + # include <string.h> + # include <syscall.h> @@ -48,7 +76,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + return f; + } + -+@@ -5312,7 +5306,21 @@ ++@@ -5329,7 +5323,21 @@ + // Linux doesn't yet have a (official) notion of processor sets, + // so just return the system wide load average. + int os::loadavg(double loadavg[], int nelem) { @@ -71,9 +99,6002 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + } + + void os::pause() { ++diff -Nur openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp.orig openjdk/hotspot/src/os/linux/vm/os_linux.cpp.orig ++--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp.orig 1970-01-01 01:00:00.000000000 +0100 +++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp.orig 2014-02-20 19:51:45.000000000 +0100 ++@@ -0,0 +1,5989 @@ +++/* +++ * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. +++ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. +++ * +++ * This code is free software; you can redistribute it and/or modify it +++ * under the terms of the GNU General Public License version 2 only, as +++ * published by the Free Software Foundation. +++ * +++ * This code is distributed in the hope that it will be useful, but WITHOUT +++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +++ * version 2 for more details (a copy is included in the LICENSE file that +++ * accompanied this code). +++ * +++ * You should have received a copy of the GNU General Public License version +++ * 2 along with this work; if not, write to the Free Software Foundation, +++ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +++ * +++ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA +++ * or visit www.oracle.com if you need additional information or have any +++ * questions. +++ * +++ */ +++ +++// no precompiled headers +++#include "classfile/classLoader.hpp" +++#include "classfile/systemDictionary.hpp" +++#include "classfile/vmSymbols.hpp" +++#include "code/icBuffer.hpp" +++#include "code/vtableStubs.hpp" +++#include "compiler/compileBroker.hpp" +++#include "interpreter/interpreter.hpp" +++#include "jvm_linux.h" +++#include "memory/allocation.inline.hpp" +++#include "memory/filemap.hpp" +++#include "mutex_linux.inline.hpp" +++#include "oops/oop.inline.hpp" +++#include "os_share_linux.hpp" +++#include "prims/jniFastGetField.hpp" +++#include "prims/jvm.h" +++#include "prims/jvm_misc.hpp" +++#include "runtime/arguments.hpp" +++#include "runtime/extendedPC.hpp" +++#include "runtime/globals.hpp" +++#include "runtime/interfaceSupport.hpp" +++#include "runtime/init.hpp" +++#include "runtime/java.hpp" +++#include "runtime/javaCalls.hpp" +++#include "runtime/mutexLocker.hpp" +++#include "runtime/objectMonitor.hpp" +++#include "runtime/osThread.hpp" +++#include "runtime/perfMemory.hpp" +++#include "runtime/sharedRuntime.hpp" +++#include "runtime/statSampler.hpp" +++#include "runtime/stubRoutines.hpp" +++#include "runtime/threadCritical.hpp" +++#include "runtime/timer.hpp" +++#include "services/attachListener.hpp" +++#include "services/memTracker.hpp" +++#include "services/runtimeService.hpp" +++#include "thread_linux.inline.hpp" +++#include "utilities/decoder.hpp" +++#include "utilities/defaultStream.hpp" +++#include "utilities/events.hpp" +++#include "utilities/elfFile.hpp" +++#include "utilities/growableArray.hpp" +++#include "utilities/vmError.hpp" +++#ifdef TARGET_ARCH_x86 +++# include "assembler_x86.inline.hpp" +++# include "nativeInst_x86.hpp" +++#endif +++#ifdef TARGET_ARCH_sparc +++# include "assembler_sparc.inline.hpp" +++# include "nativeInst_sparc.hpp" +++#endif +++#ifdef TARGET_ARCH_zero +++# include "assembler_zero.inline.hpp" +++# include "nativeInst_zero.hpp" +++#endif +++#ifdef TARGET_ARCH_arm +++# include "assembler_arm.inline.hpp" +++# include "nativeInst_arm.hpp" +++#endif +++#ifdef TARGET_ARCH_ppc +++# include "assembler_ppc.inline.hpp" +++# include "nativeInst_ppc.hpp" +++#endif +++ +++// put OS-includes here +++# include <sys/types.h> +++# include <sys/mman.h> +++# include <sys/stat.h> +++# include <sys/select.h> +++# include <pthread.h> +++# include <signal.h> +++# include <errno.h> +++# include <dlfcn.h> +++# include <stdio.h> +++# include <unistd.h> +++# include <sys/resource.h> +++# include <pthread.h> +++# include <sys/stat.h> +++# include <sys/time.h> +++# include <sys/times.h> +++# include <sys/utsname.h> +++# include <sys/socket.h> +++# include <sys/wait.h> +++# include <pwd.h> +++# include <poll.h> +++# include <semaphore.h> +++# include <fcntl.h> +++# include <string.h> +++# include <syscall.h> +++# include <sys/sysinfo.h> +++# include <gnu/libc-version.h> +++# include <sys/ipc.h> +++# include <sys/shm.h> +++# include <link.h> +++# include <stdint.h> +++# include <inttypes.h> +++# include <sys/ioctl.h> +++ +++#define MAX_PATH (2 * K) +++ +++// for timer info max values which include all bits +++#define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) +++ +++#define LARGEPAGES_BIT (1 << 6) +++ +++#ifndef EM_AARCH64 +++#define EM_AARCH64 183 /* ARM AARCH64 */ +++#endif +++ +++//////////////////////////////////////////////////////////////////////////////// +++// global variables +++julong os::Linux::_physical_memory = 0; +++ +++address os::Linux::_initial_thread_stack_bottom = NULL; +++uintptr_t os::Linux::_initial_thread_stack_size = 0; +++ +++int (*os::Linux::_clock_gettime)(clockid_t, struct timespec *) = NULL; +++int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL; +++Mutex* os::Linux::_createThread_lock = NULL; +++pthread_t os::Linux::_main_thread; +++int os::Linux::_page_size = -1; +++const int os::Linux::_vm_default_page_size = (8 * K); +++bool os::Linux::_is_floating_stack = false; +++bool os::Linux::_is_NPTL = false; +++bool os::Linux::_supports_fast_thread_cpu_time = false; +++const char * os::Linux::_glibc_version = NULL; +++const char * os::Linux::_libpthread_version = NULL; +++ +++static jlong initial_time_count=0; +++ +++static int clock_tics_per_sec = 100; +++ +++// For diagnostics to print a message once. see run_periodic_checks +++static sigset_t check_signal_done; +++static bool check_signals = true;; +++ +++static pid_t _initial_pid = 0; +++ +++/* Signal number used to suspend/resume a thread */ +++ +++/* do not use any signal number less than SIGSEGV, see 4355769 */ +++static int SR_signum = SIGUSR2; +++sigset_t SR_sigset; +++ +++/* Used to protect dlsym() calls */ +++static pthread_mutex_t dl_mutex; +++ +++// Declarations +++static void unpackTime(timespec* absTime, bool isAbsolute, jlong time); +++ +++#ifdef JAVASE_EMBEDDED +++class MemNotifyThread: public Thread { +++ friend class VMStructs; +++ public: +++ virtual void run(); +++ +++ private: +++ static MemNotifyThread* _memnotify_thread; +++ int _fd; +++ +++ public: +++ +++ // Constructor +++ MemNotifyThread(int fd); +++ +++ // Tester +++ bool is_memnotify_thread() const { return true; } +++ +++ // Printing +++ char* name() const { return (char*)"Linux MemNotify Thread"; } +++ +++ // Returns the single instance of the MemNotifyThread +++ static MemNotifyThread* memnotify_thread() { return _memnotify_thread; } +++ +++ // Create and start the single instance of MemNotifyThread +++ static void start(); +++}; +++#endif // JAVASE_EMBEDDED +++ +++// utility functions +++ +++static int SR_initialize(); +++static int SR_finalize(); +++ +++julong os::available_memory() { +++ return Linux::available_memory(); +++} +++ +++julong os::Linux::available_memory() { +++ // values in struct sysinfo are "unsigned long" +++ struct sysinfo si; +++ sysinfo(&si); +++ +++ return (julong)si.freeram * si.mem_unit; +++} +++ +++julong os::physical_memory() { +++ return Linux::physical_memory(); +++} +++ +++julong os::allocatable_physical_memory(julong size) { +++#ifdef _LP64 +++ return size; +++#else +++ julong result = MIN2(size, (julong)3800*M); +++ if (!is_allocatable(result)) { +++ // See comments under solaris for alignment considerations +++ julong reasonable_size = (julong)2*G - 2 * os::vm_page_size(); +++ result = MIN2(size, reasonable_size); +++ } +++ return result; +++#endif // _LP64 +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// environment support +++ +++bool os::getenv(const char* name, char* buf, int len) { +++ const char* val = ::getenv(name); +++ if (val != NULL && strlen(val) < (size_t)len) { +++ strcpy(buf, val); +++ return true; +++ } +++ if (len > 0) buf[0] = 0; // return a null string +++ return false; +++} +++ +++ +++// Return true if user is running as root. +++ +++bool os::have_special_privileges() { +++ static bool init = false; +++ static bool privileges = false; +++ if (!init) { +++ privileges = (getuid() != geteuid()) || (getgid() != getegid()); +++ init = true; +++ } +++ return privileges; +++} +++ +++ +++#ifndef SYS_gettid +++// i386: 224, ia64: 1105, amd64: 186, sparc 143 +++#ifdef __ia64__ +++#define SYS_gettid 1105 +++#elif __i386__ +++#define SYS_gettid 224 +++#elif __amd64__ +++#define SYS_gettid 186 +++#elif __sparc__ +++#define SYS_gettid 143 +++#else +++#error define gettid for the arch +++#endif +++#endif +++ +++// Cpu architecture string +++#if defined(ZERO) +++static char cpu_arch[] = ZERO_LIBARCH; +++#elif defined(IA64) +++static char cpu_arch[] = "ia64"; +++#elif defined(IA32) +++static char cpu_arch[] = "i386"; +++#elif defined(AMD64) +++static char cpu_arch[] = "amd64"; +++#elif defined(ARM) +++static char cpu_arch[] = "arm"; +++#elif defined(PPC) +++static char cpu_arch[] = "ppc"; +++#elif defined(SPARC) +++# ifdef _LP64 +++static char cpu_arch[] = "sparcv9"; +++# else +++static char cpu_arch[] = "sparc"; +++# endif +++#else +++#error Add appropriate cpu_arch setting +++#endif +++ +++ +++// pid_t gettid() +++// +++// Returns the kernel thread id of the currently running thread. Kernel +++// thread id is used to access /proc. +++// +++// (Note that getpid() on LinuxThreads returns kernel thread id too; but +++// on NPTL, it returns the same pid for all threads, as required by POSIX.) +++// +++pid_t os::Linux::gettid() { +++ int rslt = syscall(SYS_gettid); +++ if (rslt == -1) { +++ // old kernel, no NPTL support +++ return getpid(); +++ } else { +++ return (pid_t)rslt; +++ } +++} +++ +++// Most versions of linux have a bug where the number of processors are +++// determined by looking at the /proc file system. In a chroot environment, +++// the system call returns 1. This causes the VM to act as if it is +++// a single processor and elide locking (see is_MP() call). +++static bool unsafe_chroot_detected = false; +++static const char *unstable_chroot_error = "/proc file system not found.\n" +++ "Java may be unstable running multithreaded in a chroot " +++ "environment on Linux when /proc filesystem is not mounted."; +++ +++void os::Linux::initialize_system_info() { +++ set_processor_count(sysconf(_SC_NPROCESSORS_CONF)); +++ if (processor_count() == 1) { +++ pid_t pid = os::Linux::gettid(); +++ char fname[32]; +++ jio_snprintf(fname, sizeof(fname), "/proc/%d", pid); +++ FILE *fp = fopen(fname, "r"); +++ if (fp == NULL) { +++ unsafe_chroot_detected = true; +++ } else { +++ fclose(fp); +++ } +++ } +++ _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); +++ assert(processor_count() > 0, "linux error"); +++} +++ +++void os::init_system_properties_values() { +++// char arch[12]; +++// sysinfo(SI_ARCHITECTURE, arch, sizeof(arch)); +++ +++ // The next steps are taken in the product version: +++ // +++ // Obtain the JAVA_HOME value from the location of libjvm[_g].so. +++ // This library should be located at: +++ // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm[_g].so. +++ // +++ // If "/jre/lib/" appears at the right place in the path, then we +++ // assume libjvm[_g].so is installed in a JDK and we use this path. +++ // +++ // Otherwise exit with message: "Could not create the Java virtual machine." +++ // +++ // The following extra steps are taken in the debugging version: +++ // +++ // If "/jre/lib/" does NOT appear at the right place in the path +++ // instead of exit check for $JAVA_HOME environment variable. +++ // +++ // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, +++ // then we append a fake suffix "hotspot/libjvm[_g].so" to this path so +++ // it looks like libjvm[_g].so is installed there +++ // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm[_g].so. +++ // +++ // Otherwise exit. +++ // +++ // Important note: if the location of libjvm.so changes this +++ // code needs to be changed accordingly. +++ +++ // The next few definitions allow the code to be verbatim: +++#define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n), mtInternal) +++#define getenv(n) ::getenv(n) +++ +++/* +++ * See ld(1): +++ * The linker uses the following search paths to locate required +++ * shared libraries: +++ * 1: ... +++ * ... +++ * 7: The default directories, normally /lib and /usr/lib. +++ */ +++#if defined(AMD64) || defined(_LP64) && (defined(SPARC) || defined(PPC) || defined(S390) || defined(AARCH64)) +++#define DEFAULT_LIBPATH "/usr/lib64:/lib64:/lib:/usr/lib" +++#else +++#define DEFAULT_LIBPATH "/lib:/usr/lib" +++#endif +++ +++#define EXTENSIONS_DIR "/lib/ext" +++#define ENDORSED_DIR "/lib/endorsed" +++#define REG_DIR "/usr/java/packages" +++ +++ { +++ /* sysclasspath, java_home, dll_dir */ +++ { +++ char *home_path; +++ char *dll_path; +++ char *pslash; +++ char buf[MAXPATHLEN]; +++ os::jvm_path(buf, sizeof(buf)); +++ +++ // Found the full path to libjvm.so. +++ // Now cut the path to <java_home>/jre if we can. +++ *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ +++ pslash = strrchr(buf, '/'); +++ if (pslash != NULL) +++ *pslash = '\0'; /* get rid of /{client|server|hotspot} */ +++ dll_path = malloc(strlen(buf) + 1); +++ if (dll_path == NULL) +++ return; +++ strcpy(dll_path, buf); +++ Arguments::set_dll_dir(dll_path); +++ +++ if (pslash != NULL) { +++ pslash = strrchr(buf, '/'); +++ if (pslash != NULL) { +++ *pslash = '\0'; /* get rid of /<arch> */ +++ pslash = strrchr(buf, '/'); +++ if (pslash != NULL) +++ *pslash = '\0'; /* get rid of /lib */ +++ } +++ } +++ +++ home_path = malloc(strlen(buf) + 1); +++ if (home_path == NULL) +++ return; +++ strcpy(home_path, buf); +++ Arguments::set_java_home(home_path); +++ +++ if (!set_boot_path('/', ':')) +++ return; +++ } +++ +++ /* +++ * Where to look for native libraries +++ * +++ * Note: Due to a legacy implementation, most of the library path +++ * is set in the launcher. This was to accomodate linking restrictions +++ * on legacy Linux implementations (which are no longer supported). +++ * Eventually, all the library path setting will be done here. +++ * +++ * However, to prevent the proliferation of improperly built native +++ * libraries, the new path component /usr/java/packages is added here. +++ * Eventually, all the library path setting will be done here. +++ */ +++ { +++ char *ld_library_path; +++ +++ /* +++ * Construct the invariant part of ld_library_path. Note that the +++ * space for the colon and the trailing null are provided by the +++ * nulls included by the sizeof operator (so actually we allocate +++ * a byte more than necessary). +++ */ +++ ld_library_path = (char *) malloc(sizeof(REG_DIR) + sizeof("/lib/") + +++ strlen(cpu_arch) + sizeof(DEFAULT_LIBPATH)); +++ sprintf(ld_library_path, REG_DIR "/lib/%s:" DEFAULT_LIBPATH, cpu_arch); +++ +++ /* +++ * Get the user setting of LD_LIBRARY_PATH, and prepended it. It +++ * should always exist (until the legacy problem cited above is +++ * addressed). +++ */ +++ char *v = getenv("LD_LIBRARY_PATH"); +++ if (v != NULL) { +++ char *t = ld_library_path; +++ /* That's +1 for the colon and +1 for the trailing '\0' */ +++ ld_library_path = (char *) malloc(strlen(v) + 1 + strlen(t) + 1); +++ sprintf(ld_library_path, "%s:%s", v, t); +++ } +++ Arguments::set_library_path(ld_library_path); +++ } +++ +++ /* +++ * Extensions directories. +++ * +++ * Note that the space for the colon and the trailing null are provided +++ * by the nulls included by the sizeof operator (so actually one byte more +++ * than necessary is allocated). +++ */ +++ { +++ char *buf = malloc(strlen(Arguments::get_java_home()) + +++ sizeof(EXTENSIONS_DIR) + sizeof(REG_DIR) + sizeof(EXTENSIONS_DIR)); +++ sprintf(buf, "%s" EXTENSIONS_DIR ":" REG_DIR EXTENSIONS_DIR, +++ Arguments::get_java_home()); +++ Arguments::set_ext_dirs(buf); +++ } +++ +++ /* Endorsed standards default directory. */ +++ { +++ char * buf; +++ buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR)); +++ sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home()); +++ Arguments::set_endorsed_dirs(buf); +++ } +++ } +++ +++#undef malloc +++#undef getenv +++#undef EXTENSIONS_DIR +++#undef ENDORSED_DIR +++ +++ // Done +++ return; +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// breakpoint support +++ +++void os::breakpoint() { +++ BREAKPOINT; +++} +++ +++extern "C" void breakpoint() { +++ // use debugger to set breakpoint here +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// signal support +++ +++debug_only(static bool signal_sets_initialized = false); +++static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; +++ +++bool os::Linux::is_sig_ignored(int sig) { +++ struct sigaction oact; +++ sigaction(sig, (struct sigaction*)NULL, &oact); +++ void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) +++ : CAST_FROM_FN_PTR(void*, oact.sa_handler); +++ if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) +++ return true; +++ else +++ return false; +++} +++ +++void os::Linux::signal_sets_init() { +++ // Should also have an assertion stating we are still single-threaded. +++ assert(!signal_sets_initialized, "Already initialized"); +++ // Fill in signals that are necessarily unblocked for all threads in +++ // the VM. Currently, we unblock the following signals: +++ // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden +++ // by -Xrs (=ReduceSignalUsage)); +++ // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all +++ // other threads. The "ReduceSignalUsage" boolean tells us not to alter +++ // the dispositions or masks wrt these signals. +++ // Programs embedding the VM that want to use the above signals for their +++ // own purposes must, at this time, use the "-Xrs" option to prevent +++ // interference with shutdown hooks and BREAK_SIGNAL thread dumping. +++ // (See bug 4345157, and other related bugs). +++ // In reality, though, unblocking these signals is really a nop, since +++ // these signals are not blocked by default. +++ sigemptyset(&unblocked_sigs); +++ sigemptyset(&allowdebug_blocked_sigs); +++ sigaddset(&unblocked_sigs, SIGILL); +++ sigaddset(&unblocked_sigs, SIGSEGV); +++ sigaddset(&unblocked_sigs, SIGBUS); +++ sigaddset(&unblocked_sigs, SIGFPE); +++ sigaddset(&unblocked_sigs, SR_signum); +++ +++ if (!ReduceSignalUsage) { +++ if (!os::Linux::is_sig_ignored(SHUTDOWN1_SIGNAL)) { +++ sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); +++ sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL); +++ } +++ if (!os::Linux::is_sig_ignored(SHUTDOWN2_SIGNAL)) { +++ sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); +++ sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL); +++ } +++ if (!os::Linux::is_sig_ignored(SHUTDOWN3_SIGNAL)) { +++ sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); +++ sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL); +++ } +++ } +++ // Fill in signals that are blocked by all but the VM thread. +++ sigemptyset(&vm_sigs); +++ if (!ReduceSignalUsage) +++ sigaddset(&vm_sigs, BREAK_SIGNAL); +++ debug_only(signal_sets_initialized = true); +++ +++} +++ +++// These are signals that are unblocked while a thread is running Java. +++// (For some reason, they get blocked by default.) +++sigset_t* os::Linux::unblocked_signals() { +++ assert(signal_sets_initialized, "Not initialized"); +++ return &unblocked_sigs; +++} +++ +++// These are the signals that are blocked while a (non-VM) thread is +++// running Java. Only the VM thread handles these signals. +++sigset_t* os::Linux::vm_signals() { +++ assert(signal_sets_initialized, "Not initialized"); +++ return &vm_sigs; +++} +++ +++// These are signals that are blocked during cond_wait to allow debugger in +++sigset_t* os::Linux::allowdebug_blocked_signals() { +++ assert(signal_sets_initialized, "Not initialized"); +++ return &allowdebug_blocked_sigs; +++} +++ +++void os::Linux::hotspot_sigmask(Thread* thread) { +++ +++ //Save caller's signal mask before setting VM signal mask +++ sigset_t caller_sigmask; +++ pthread_sigmask(SIG_BLOCK, NULL, &caller_sigmask); +++ +++ OSThread* osthread = thread->osthread(); +++ osthread->set_caller_sigmask(caller_sigmask); +++ +++ pthread_sigmask(SIG_UNBLOCK, os::Linux::unblocked_signals(), NULL); +++ +++ if (!ReduceSignalUsage) { +++ if (thread->is_VM_thread()) { +++ // Only the VM thread handles BREAK_SIGNAL ... +++ pthread_sigmask(SIG_UNBLOCK, vm_signals(), NULL); +++ } else { +++ // ... all other threads block BREAK_SIGNAL +++ pthread_sigmask(SIG_BLOCK, vm_signals(), NULL); +++ } +++ } +++} +++ +++////////////////////////////////////////////////////////////////////////////// +++// detecting pthread library +++ +++void os::Linux::libpthread_init() { +++ // Save glibc and pthread version strings. Note that _CS_GNU_LIBC_VERSION +++ // and _CS_GNU_LIBPTHREAD_VERSION are supported in glibc >= 2.3.2. Use a +++ // generic name for earlier versions. +++ // Define macros here so we can build HotSpot on old systems. +++# ifndef _CS_GNU_LIBC_VERSION +++# define _CS_GNU_LIBC_VERSION 2 +++# endif +++# ifndef _CS_GNU_LIBPTHREAD_VERSION +++# define _CS_GNU_LIBPTHREAD_VERSION 3 +++# endif +++ +++ size_t n = confstr(_CS_GNU_LIBC_VERSION, NULL, 0); +++ if (n > 0) { +++ char *str = (char *)malloc(n, mtInternal); +++ confstr(_CS_GNU_LIBC_VERSION, str, n); +++ os::Linux::set_glibc_version(str); +++ } else { +++ // _CS_GNU_LIBC_VERSION is not supported, try gnu_get_libc_version() +++ static char _gnu_libc_version[32]; +++ jio_snprintf(_gnu_libc_version, sizeof(_gnu_libc_version), +++ "glibc %s %s", gnu_get_libc_version(), gnu_get_libc_release()); +++ os::Linux::set_glibc_version(_gnu_libc_version); +++ } +++ +++ n = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, 0); +++ if (n > 0) { +++ char *str = (char *)malloc(n, mtInternal); +++ confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n); +++ // Vanilla RH-9 (glibc 2.3.2) has a bug that confstr() always tells +++ // us "NPTL-0.29" even we are running with LinuxThreads. Check if this +++ // is the case. LinuxThreads has a hard limit on max number of threads. +++ // So sysconf(_SC_THREAD_THREADS_MAX) will return a positive value. +++ // On the other hand, NPTL does not have such a limit, sysconf() +++ // will return -1 and errno is not changed. Check if it is really NPTL. +++ if (strcmp(os::Linux::glibc_version(), "glibc 2.3.2") == 0 && +++ strstr(str, "NPTL") && +++ sysconf(_SC_THREAD_THREADS_MAX) > 0) { +++ free(str); +++ os::Linux::set_libpthread_version("linuxthreads"); +++ } else { +++ os::Linux::set_libpthread_version(str); +++ } +++ } else { +++ // glibc before 2.3.2 only has LinuxThreads. +++ os::Linux::set_libpthread_version("linuxthreads"); +++ } +++ +++ if (strstr(libpthread_version(), "NPTL")) { +++ os::Linux::set_is_NPTL(); +++ } else { +++ os::Linux::set_is_LinuxThreads(); +++ } +++ +++ // LinuxThreads have two flavors: floating-stack mode, which allows variable +++ // stack size; and fixed-stack mode. NPTL is always floating-stack. +++ if (os::Linux::is_NPTL() || os::Linux::supports_variable_stack_size()) { +++ os::Linux::set_is_floating_stack(); +++ } +++} +++ +++///////////////////////////////////////////////////////////////////////////// +++// thread stack +++ +++// Force Linux kernel to expand current thread stack. If "bottom" is close +++// to the stack guard, caller should block all signals. +++// +++// MAP_GROWSDOWN: +++// A special mmap() flag that is used to implement thread stacks. It tells +++// kernel that the memory region should extend downwards when needed. This +++// allows early versions of LinuxThreads to only mmap the first few pages +++// when creating a new thread. Linux kernel will automatically expand thread +++// stack as needed (on page faults). +++// +++// However, because the memory region of a MAP_GROWSDOWN stack can grow on +++// demand, if a page fault happens outside an already mapped MAP_GROWSDOWN +++// region, it's hard to tell if the fault is due to a legitimate stack +++// access or because of reading/writing non-exist memory (e.g. buffer +++// overrun). As a rule, if the fault happens below current stack pointer, +++// Linux kernel does not expand stack, instead a SIGSEGV is sent to the +++// application (see Linux kernel fault.c). +++// +++// This Linux feature can cause SIGSEGV when VM bangs thread stack for +++// stack overflow detection. +++// +++// Newer version of LinuxThreads (since glibc-2.2, or, RH-7.x) and NPTL do +++// not use this flag. However, the stack of initial thread is not created +++// by pthread, it is still MAP_GROWSDOWN. Also it's possible (though +++// unlikely) that user code can create a thread with MAP_GROWSDOWN stack +++// and then attach the thread to JVM. +++// +++// To get around the problem and allow stack banging on Linux, we need to +++// manually expand thread stack after receiving the SIGSEGV. +++// +++// There are two ways to expand thread stack to address "bottom", we used +++// both of them in JVM before 1.5: +++// 1. adjust stack pointer first so that it is below "bottom", and then +++// touch "bottom" +++// 2. mmap() the page in question +++// +++// Now alternate signal stack is gone, it's harder to use 2. For instance, +++// if current sp is already near the lower end of page 101, and we need to +++// call mmap() to map page 100, it is possible that part of the mmap() frame +++// will be placed in page 100. When page 100 is mapped, it is zero-filled. +++// That will destroy the mmap() frame and cause VM to crash. +++// +++// The following code works by adjusting sp first, then accessing the "bottom" +++// page to force a page fault. Linux kernel will then automatically expand the +++// stack mapping. +++// +++// _expand_stack_to() assumes its frame size is less than page size, which +++// should always be true if the function is not inlined. +++ +++#if __GNUC__ < 3 // gcc 2.x does not support noinline attribute +++#define NOINLINE +++#else +++#define NOINLINE __attribute__ ((noinline)) +++#endif +++ +++static void _expand_stack_to(address bottom) NOINLINE; +++ +++static void _expand_stack_to(address bottom) { +++ address sp; +++ size_t size; +++ volatile char *p; +++ +++ // Adjust bottom to point to the largest address within the same page, it +++ // gives us a one-page buffer if alloca() allocates slightly more memory. +++ bottom = (address)align_size_down((uintptr_t)bottom, os::Linux::page_size()); +++ bottom += os::Linux::page_size() - 1; +++ +++ // sp might be slightly above current stack pointer; if that's the case, we +++ // will alloca() a little more space than necessary, which is OK. Don't use +++ // os::current_stack_pointer(), as its result can be slightly below current +++ // stack pointer, causing us to not alloca enough to reach "bottom". +++ sp = (address)&sp; +++ +++ if (sp > bottom) { +++ size = sp - bottom; +++ p = (volatile char *)alloca(size); +++ assert(p != NULL && p <= (volatile char *)bottom, "alloca problem?"); +++ p[0] = '\0'; +++ } +++} +++ +++bool os::Linux::manually_expand_stack(JavaThread * t, address addr) { +++ assert(t!=NULL, "just checking"); +++ assert(t->osthread()->expanding_stack(), "expand should be set"); +++ assert(t->stack_base() != NULL, "stack_base was not initialized"); +++ +++ if (addr < t->stack_base() && addr >= t->stack_yellow_zone_base()) { +++ sigset_t mask_all, old_sigset; +++ sigfillset(&mask_all); +++ pthread_sigmask(SIG_SETMASK, &mask_all, &old_sigset); +++ _expand_stack_to(addr); +++ pthread_sigmask(SIG_SETMASK, &old_sigset, NULL); +++ return true; +++ } +++ return false; +++} +++ +++////////////////////////////////////////////////////////////////////////////// +++// create new thread +++ +++static address highest_vm_reserved_address(); +++ +++// check if it's safe to start a new thread +++static bool _thread_safety_check(Thread* thread) { +++ if (os::Linux::is_LinuxThreads() && !os::Linux::is_floating_stack()) { +++ // Fixed stack LinuxThreads (SuSE Linux/x86, and some versions of Redhat) +++ // Heap is mmap'ed at lower end of memory space. Thread stacks are +++ // allocated (MAP_FIXED) from high address space. Every thread stack +++ // occupies a fixed size slot (usually 2Mbytes, but user can change +++ // it to other values if they rebuild LinuxThreads). +++ // +++ // Problem with MAP_FIXED is that mmap() can still succeed even part of +++ // the memory region has already been mmap'ed. That means if we have too +++ // many threads and/or very large heap, eventually thread stack will +++ // collide with heap. +++ // +++ // Here we try to prevent heap/stack collision by comparing current +++ // stack bottom with the highest address that has been mmap'ed by JVM +++ // plus a safety margin for memory maps created by native code. +++ // +++ // This feature can be disabled by setting ThreadSafetyMargin to 0 +++ // +++ if (ThreadSafetyMargin > 0) { +++ address stack_bottom = os::current_stack_base() - os::current_stack_size(); +++ +++ // not safe if our stack extends below the safety margin +++ return stack_bottom - ThreadSafetyMargin >= highest_vm_reserved_address(); +++ } else { +++ return true; +++ } +++ } else { +++ // Floating stack LinuxThreads or NPTL: +++ // Unlike fixed stack LinuxThreads, thread stacks are not MAP_FIXED. When +++ // there's not enough space left, pthread_create() will fail. If we come +++ // here, that means enough space has been reserved for stack. +++ return true; +++ } +++} +++ +++// Thread start routine for all newly created threads +++static void *java_start(Thread *thread) { +++ // Try to randomize the cache line index of hot stack frames. +++ // This helps when threads of the same stack traces evict each other's +++ // cache lines. The threads can be either from the same JVM instance, or +++ // from different JVM instances. The benefit is especially true for +++ // processors with hyperthreading technology. +++ static int counter = 0; +++ int pid = os::current_process_id(); +++ alloca(((pid ^ counter++) & 7) * 128); +++ +++ ThreadLocalStorage::set_thread(thread); +++ +++ OSThread* osthread = thread->osthread(); +++ Monitor* sync = osthread->startThread_lock(); +++ +++ // non floating stack LinuxThreads needs extra check, see above +++ if (!_thread_safety_check(thread)) { +++ // notify parent thread +++ MutexLockerEx ml(sync, Mutex::_no_safepoint_check_flag); +++ osthread->set_state(ZOMBIE); +++ sync->notify_all(); +++ return NULL; +++ } +++ +++ // thread_id is kernel thread id (similar to Solaris LWP id) +++ osthread->set_thread_id(os::Linux::gettid()); +++ +++ if (UseNUMA) { +++ int lgrp_id = os::numa_get_group_id(); +++ if (lgrp_id != -1) { +++ thread->set_lgrp_id(lgrp_id); +++ } +++ } +++ // initialize signal mask for this thread +++ os::Linux::hotspot_sigmask(thread); +++ +++ // initialize floating point control register +++ os::Linux::init_thread_fpu_state(); +++ +++ // handshaking with parent thread +++ { +++ MutexLockerEx ml(sync, Mutex::_no_safepoint_check_flag); +++ +++ // notify parent thread +++ osthread->set_state(INITIALIZED); +++ sync->notify_all(); +++ +++ // wait until os::start_thread() +++ while (osthread->get_state() == INITIALIZED) { +++ sync->wait(Mutex::_no_safepoint_check_flag); +++ } +++ } +++ +++ // call one more level start routine +++ thread->run(); +++ +++ return 0; +++} +++ +++bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { +++ assert(thread->osthread() == NULL, "caller responsible"); +++ +++ // Allocate the OSThread object +++ OSThread* osthread = new OSThread(NULL, NULL); +++ if (osthread == NULL) { +++ return false; +++ } +++ +++ // set the correct thread state +++ osthread->set_thread_type(thr_type); +++ +++ // Initial state is ALLOCATED but not INITIALIZED +++ osthread->set_state(ALLOCATED); +++ +++ thread->set_osthread(osthread); +++ +++ // init thread attributes +++ pthread_attr_t attr; +++ pthread_attr_init(&attr); +++ pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); +++ +++ // stack size +++ if (os::Linux::supports_variable_stack_size()) { +++ // calculate stack size if it's not specified by caller +++ if (stack_size == 0) { +++ stack_size = os::Linux::default_stack_size(thr_type); +++ +++ switch (thr_type) { +++ case os::java_thread: +++ // Java threads use ThreadStackSize which default value can be +++ // changed with the flag -Xss +++ assert (JavaThread::stack_size_at_create() > 0, "this should be set"); +++ stack_size = JavaThread::stack_size_at_create(); +++ break; +++ case os::compiler_thread: +++ if (CompilerThreadStackSize > 0) { +++ stack_size = (size_t)(CompilerThreadStackSize * K); +++ break; +++ } // else fall through: +++ // use VMThreadStackSize if CompilerThreadStackSize is not defined +++ case os::vm_thread: +++ case os::pgc_thread: +++ case os::cgc_thread: +++ case os::watcher_thread: +++ if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); +++ break; +++ } +++ } +++ +++ stack_size = MAX2(stack_size, os::Linux::min_stack_allowed); +++ pthread_attr_setstacksize(&attr, stack_size); +++ } else { +++ // let pthread_create() pick the default value. +++ } +++ +++ // glibc guard page +++ pthread_attr_setguardsize(&attr, os::Linux::default_guard_size(thr_type)); +++ +++ ThreadState state; +++ +++ { +++ // Serialize thread creation if we are running with fixed stack LinuxThreads +++ bool lock = os::Linux::is_LinuxThreads() && !os::Linux::is_floating_stack(); +++ if (lock) { +++ os::Linux::createThread_lock()->lock_without_safepoint_check(); +++ } +++ +++ pthread_t tid; +++ int ret = pthread_create(&tid, &attr, (void* (*)(void*)) java_start, thread); +++ +++ pthread_attr_destroy(&attr); +++ +++ if (ret != 0) { +++ if (PrintMiscellaneous && (Verbose || WizardMode)) { +++ perror("pthread_create()"); +++ } +++ // Need to clean up stuff we've allocated so far +++ thread->set_osthread(NULL); +++ delete osthread; +++ if (lock) os::Linux::createThread_lock()->unlock(); +++ return false; +++ } +++ +++ // Store pthread info into the OSThread +++ osthread->set_pthread_id(tid); +++ +++ // Wait until child thread is either initialized or aborted +++ { +++ Monitor* sync_with_child = osthread->startThread_lock(); +++ MutexLockerEx ml(sync_with_child, Mutex::_no_safepoint_check_flag); +++ while ((state = osthread->get_state()) == ALLOCATED) { +++ sync_with_child->wait(Mutex::_no_safepoint_check_flag); +++ } +++ } +++ +++ if (lock) { +++ os::Linux::createThread_lock()->unlock(); +++ } +++ } +++ +++ // Aborted due to thread limit being reached +++ if (state == ZOMBIE) { +++ thread->set_osthread(NULL); +++ delete osthread; +++ return false; +++ } +++ +++ // The thread is returned suspended (in state INITIALIZED), +++ // and is started higher up in the call chain +++ assert(state == INITIALIZED, "race condition"); +++ return true; +++} +++ +++///////////////////////////////////////////////////////////////////////////// +++// attach existing thread +++ +++// bootstrap the main thread +++bool os::create_main_thread(JavaThread* thread) { +++ assert(os::Linux::_main_thread == pthread_self(), "should be called inside main thread"); +++ return create_attached_thread(thread); +++} +++ +++bool os::create_attached_thread(JavaThread* thread) { +++#ifdef ASSERT +++ thread->verify_not_published(); +++#endif +++ +++ // Allocate the OSThread object +++ OSThread* osthread = new OSThread(NULL, NULL); +++ +++ if (osthread == NULL) { +++ return false; +++ } +++ +++ // Store pthread info into the OSThread +++ osthread->set_thread_id(os::Linux::gettid()); +++ osthread->set_pthread_id(::pthread_self()); +++ +++ // initialize floating point control register +++ os::Linux::init_thread_fpu_state(); +++ +++ // Initial thread state is RUNNABLE +++ osthread->set_state(RUNNABLE); +++ +++ thread->set_osthread(osthread); +++ +++ if (UseNUMA) { +++ int lgrp_id = os::numa_get_group_id(); +++ if (lgrp_id != -1) { +++ thread->set_lgrp_id(lgrp_id); +++ } +++ } +++ +++ if (os::Linux::is_initial_thread()) { +++ // If current thread is initial thread, its stack is mapped on demand, +++ // see notes about MAP_GROWSDOWN. Here we try to force kernel to map +++ // the entire stack region to avoid SEGV in stack banging. +++ // It is also useful to get around the heap-stack-gap problem on SuSE +++ // kernel (see 4821821 for details). We first expand stack to the top +++ // of yellow zone, then enable stack yellow zone (order is significant, +++ // enabling yellow zone first will crash JVM on SuSE Linux), so there +++ // is no gap between the last two virtual memory regions. +++ +++ JavaThread *jt = (JavaThread *)thread; +++ address addr = jt->stack_yellow_zone_base(); +++ assert(addr != NULL, "initialization problem?"); +++ assert(jt->stack_available(addr) > 0, "stack guard should not be enabled"); +++ +++ osthread->set_expanding_stack(); +++ os::Linux::manually_expand_stack(jt, addr); +++ osthread->clear_expanding_stack(); +++ } +++ +++ // initialize signal mask for this thread +++ // and save the caller's signal mask +++ os::Linux::hotspot_sigmask(thread); +++ +++ return true; +++} +++ +++void os::pd_start_thread(Thread* thread) { +++ OSThread * osthread = thread->osthread(); +++ assert(osthread->get_state() != INITIALIZED, "just checking"); +++ Monitor* sync_with_child = osthread->startThread_lock(); +++ MutexLockerEx ml(sync_with_child, Mutex::_no_safepoint_check_flag); +++ sync_with_child->notify(); +++} +++ +++// Free Linux resources related to the OSThread +++void os::free_thread(OSThread* osthread) { +++ assert(osthread != NULL, "osthread not set"); +++ +++ if (Thread::current()->osthread() == osthread) { +++ // Restore caller's signal mask +++ sigset_t sigmask = osthread->caller_sigmask(); +++ pthread_sigmask(SIG_SETMASK, &sigmask, NULL); +++ } +++ +++ delete osthread; +++} +++ +++////////////////////////////////////////////////////////////////////////////// +++// thread local storage +++ +++int os::allocate_thread_local_storage() { +++ pthread_key_t key; +++ int rslt = pthread_key_create(&key, NULL); +++ assert(rslt == 0, "cannot allocate thread local storage"); +++ return (int)key; +++} +++ +++// Note: This is currently not used by VM, as we don't destroy TLS key +++// on VM exit. +++void os::free_thread_local_storage(int index) { +++ int rslt = pthread_key_delete((pthread_key_t)index); +++ assert(rslt == 0, "invalid index"); +++} +++ +++void os::thread_local_storage_at_put(int index, void* value) { +++ int rslt = pthread_setspecific((pthread_key_t)index, value); +++ assert(rslt == 0, "pthread_setspecific failed"); +++} +++ +++extern "C" Thread* get_thread() { +++ return ThreadLocalStorage::thread(); +++} +++ +++////////////////////////////////////////////////////////////////////////////// +++// initial thread +++ +++// Check if current thread is the initial thread, similar to Solaris thr_main. +++bool os::Linux::is_initial_thread(void) { +++ char dummy; +++ // If called before init complete, thread stack bottom will be null. +++ // Can be called if fatal error occurs before initialization. +++ if (initial_thread_stack_bottom() == NULL) return false; +++ assert(initial_thread_stack_bottom() != NULL && +++ initial_thread_stack_size() != 0, +++ "os::init did not locate initial thread's stack region"); +++ if ((address)&dummy >= initial_thread_stack_bottom() && +++ (address)&dummy < initial_thread_stack_bottom() + initial_thread_stack_size()) +++ return true; +++ else return false; +++} +++ +++// Find the virtual memory area that contains addr +++static bool find_vma(address addr, address* vma_low, address* vma_high) { +++ FILE *fp = fopen("/proc/self/maps", "r"); +++ if (fp) { +++ address low, high; +++ while (!feof(fp)) { +++ if (fscanf(fp, "%p-%p", &low, &high) == 2) { +++ if (low <= addr && addr < high) { +++ if (vma_low) *vma_low = low; +++ if (vma_high) *vma_high = high; +++ fclose (fp); +++ return true; +++ } +++ } +++ for (;;) { +++ int ch = fgetc(fp); +++ if (ch == EOF || ch == (int)'\n') break; +++ } +++ } +++ fclose(fp); +++ } +++ return false; +++} +++ +++// Locate initial thread stack. This special handling of initial thread stack +++// is needed because pthread_getattr_np() on most (all?) Linux distros returns +++// bogus value for initial thread. +++void os::Linux::capture_initial_stack(size_t max_size) { +++ // stack size is the easy part, get it from RLIMIT_STACK +++ size_t stack_size; +++ struct rlimit rlim; +++ getrlimit(RLIMIT_STACK, &rlim); +++ stack_size = rlim.rlim_cur; +++ +++ // 6308388: a bug in ld.so will relocate its own .data section to the +++ // lower end of primordial stack; reduce ulimit -s value a little bit +++ // so we won't install guard page on ld.so's data section. +++ stack_size -= 2 * page_size(); +++ +++ // 4441425: avoid crash with "unlimited" stack size on SuSE 7.1 or Redhat +++ // 7.1, in both cases we will get 2G in return value. +++ // 4466587: glibc 2.2.x compiled w/o "--enable-kernel=2.4.0" (RH 7.0, +++ // SuSE 7.2, Debian) can not handle alternate signal stack correctly +++ // for initial thread if its stack size exceeds 6M. Cap it at 2M, +++ // in case other parts in glibc still assumes 2M max stack size. +++ // FIXME: alt signal stack is gone, maybe we can relax this constraint? +++#ifndef IA64 +++ if (stack_size > 2 * K * K) stack_size = 2 * K * K; +++#else +++ // Problem still exists RH7.2 (IA64 anyway) but 2MB is a little small +++ if (stack_size > 4 * K * K) stack_size = 4 * K * K; +++#endif +++ +++ // Try to figure out where the stack base (top) is. This is harder. +++ // +++ // When an application is started, glibc saves the initial stack pointer in +++ // a global variable "__libc_stack_end", which is then used by system +++ // libraries. __libc_stack_end should be pretty close to stack top. The +++ // variable is available since the very early days. However, because it is +++ // a private interface, it could disappear in the future. +++ // +++ // Linux kernel saves start_stack information in /proc/<pid>/stat. Similar +++ // to __libc_stack_end, it is very close to stack top, but isn't the real +++ // stack top. Note that /proc may not exist if VM is running as a chroot +++ // program, so reading /proc/<pid>/stat could fail. Also the contents of +++ // /proc/<pid>/stat could change in the future (though unlikely). +++ // +++ // We try __libc_stack_end first. If that doesn't work, look for +++ // /proc/<pid>/stat. If neither of them works, we use current stack pointer +++ // as a hint, which should work well in most cases. +++ +++ uintptr_t stack_start; +++ +++ // try __libc_stack_end first +++ uintptr_t *p = (uintptr_t *)dlsym(RTLD_DEFAULT, "__libc_stack_end"); +++ if (p && *p) { +++ stack_start = *p; +++ } else { +++ // see if we can get the start_stack field from /proc/self/stat +++ FILE *fp; +++ int pid; +++ char state; +++ int ppid; +++ int pgrp; +++ int session; +++ int nr; +++ int tpgrp; +++ unsigned long flags; +++ unsigned long minflt; +++ unsigned long cminflt; +++ unsigned long majflt; +++ unsigned long cmajflt; +++ unsigned long utime; +++ unsigned long stime; +++ long cutime; +++ long cstime; +++ long prio; +++ long nice; +++ long junk; +++ long it_real; +++ uintptr_t start; +++ uintptr_t vsize; +++ intptr_t rss; +++ uintptr_t rsslim; +++ uintptr_t scodes; +++ uintptr_t ecode; +++ int i; +++ +++ // Figure what the primordial thread stack base is. Code is inspired +++ // by email from Hans Boehm. /proc/self/stat begins with current pid, +++ // followed by command name surrounded by parentheses, state, etc. +++ char stat[2048]; +++ int statlen; +++ +++ fp = fopen("/proc/self/stat", "r"); +++ if (fp) { +++ statlen = fread(stat, 1, 2047, fp); +++ stat[statlen] = '\0'; +++ fclose(fp); +++ +++ // Skip pid and the command string. Note that we could be dealing with +++ // weird command names, e.g. user could decide to rename java launcher +++ // to "java 1.4.2 :)", then the stat file would look like +++ // 1234 (java 1.4.2 :)) R ... ... +++ // We don't really need to know the command string, just find the last +++ // occurrence of ")" and then start parsing from there. See bug 4726580. +++ char * s = strrchr(stat, ')'); +++ +++ i = 0; +++ if (s) { +++ // Skip blank chars +++ do s++; while (isspace(*s)); +++ +++#define _UFM UINTX_FORMAT +++#define _DFM INTX_FORMAT +++ +++ /* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 */ +++ /* 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 */ +++ i = sscanf(s, "%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld " _UFM _UFM _DFM _UFM _UFM _UFM _UFM, +++ &state, /* 3 %c */ +++ &ppid, /* 4 %d */ +++ &pgrp, /* 5 %d */ +++ &session, /* 6 %d */ +++ &nr, /* 7 %d */ +++ &tpgrp, /* 8 %d */ +++ &flags, /* 9 %lu */ +++ &minflt, /* 10 %lu */ +++ &cminflt, /* 11 %lu */ +++ &majflt, /* 12 %lu */ +++ &cmajflt, /* 13 %lu */ +++ &utime, /* 14 %lu */ +++ &stime, /* 15 %lu */ +++ &cutime, /* 16 %ld */ +++ &cstime, /* 17 %ld */ +++ &prio, /* 18 %ld */ +++ &nice, /* 19 %ld */ +++ &junk, /* 20 %ld */ +++ &it_real, /* 21 %ld */ +++ &start, /* 22 UINTX_FORMAT */ +++ &vsize, /* 23 UINTX_FORMAT */ +++ &rss, /* 24 INTX_FORMAT */ +++ &rsslim, /* 25 UINTX_FORMAT */ +++ &scodes, /* 26 UINTX_FORMAT */ +++ &ecode, /* 27 UINTX_FORMAT */ +++ &stack_start); /* 28 UINTX_FORMAT */ +++ } +++ +++#undef _UFM +++#undef _DFM +++ +++ if (i != 28 - 2) { +++ assert(false, "Bad conversion from /proc/self/stat"); +++ // product mode - assume we are the initial thread, good luck in the +++ // embedded case. +++ warning("Can't detect initial thread stack location - bad conversion"); +++ stack_start = (uintptr_t) &rlim; +++ } +++ } else { +++ // For some reason we can't open /proc/self/stat (for example, running on +++ // FreeBSD with a Linux emulator, or inside chroot), this should work for +++ // most cases, so don't abort: +++ warning("Can't detect initial thread stack location - no /proc/self/stat"); +++ stack_start = (uintptr_t) &rlim; +++ } +++ } +++ +++ // Now we have a pointer (stack_start) very close to the stack top, the +++ // next thing to do is to figure out the exact location of stack top. We +++ // can find out the virtual memory area that contains stack_start by +++ // reading /proc/self/maps, it should be the last vma in /proc/self/maps, +++ // and its upper limit is the real stack top. (again, this would fail if +++ // running inside chroot, because /proc may not exist.) +++ +++ uintptr_t stack_top; +++ address low, high; +++ if (find_vma((address)stack_start, &low, &high)) { +++ // success, "high" is the true stack top. (ignore "low", because initial +++ // thread stack grows on demand, its real bottom is high - RLIMIT_STACK.) +++ stack_top = (uintptr_t)high; +++ } else { +++ // failed, likely because /proc/self/maps does not exist +++ warning("Can't detect initial thread stack location - find_vma failed"); +++ // best effort: stack_start is normally within a few pages below the real +++ // stack top, use it as stack top, and reduce stack size so we won't put +++ // guard page outside stack. +++ stack_top = stack_start; +++ stack_size -= 16 * page_size(); +++ } +++ +++ // stack_top could be partially down the page so align it +++ stack_top = align_size_up(stack_top, page_size()); +++ +++ if (max_size && stack_size > max_size) { +++ _initial_thread_stack_size = max_size; +++ } else { +++ _initial_thread_stack_size = stack_size; +++ } +++ +++ _initial_thread_stack_size = align_size_down(_initial_thread_stack_size, page_size()); +++ _initial_thread_stack_bottom = (address)stack_top - _initial_thread_stack_size; +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// time support +++ +++// Time since start-up in seconds to a fine granularity. +++// Used by VMSelfDestructTimer and the MemProfiler. +++double os::elapsedTime() { +++ +++ return (double)(os::elapsed_counter()) * 0.000001; +++} +++ +++jlong os::elapsed_counter() { +++ timeval time; +++ int status = gettimeofday(&time, NULL); +++ return jlong(time.tv_sec) * 1000 * 1000 + jlong(time.tv_usec) - initial_time_count; +++} +++ +++jlong os::elapsed_frequency() { +++ return (1000 * 1000); +++} +++ +++// For now, we say that linux does not support vtime. I have no idea +++// whether it can actually be made to (DLD, 9/13/05). +++ +++bool os::supports_vtime() { return false; } +++bool os::enable_vtime() { return false; } +++bool os::vtime_enabled() { return false; } +++double os::elapsedVTime() { +++ // better than nothing, but not much +++ return elapsedTime(); +++} +++ +++jlong os::javaTimeMillis() { +++ timeval time; +++ int status = gettimeofday(&time, NULL); +++ assert(status != -1, "linux error"); +++ return jlong(time.tv_sec) * 1000 + jlong(time.tv_usec / 1000); +++} +++ +++#ifndef CLOCK_MONOTONIC +++#define CLOCK_MONOTONIC (1) +++#endif +++ +++void os::Linux::clock_init() { +++ // we do dlopen's in this particular order due to bug in linux +++ // dynamical loader (see 6348968) leading to crash on exit +++ void* handle = dlopen("librt.so.1", RTLD_LAZY); +++ if (handle == NULL) { +++ handle = dlopen("librt.so", RTLD_LAZY); +++ } +++ +++ if (handle) { +++ int (*clock_getres_func)(clockid_t, struct timespec*) = +++ (int(*)(clockid_t, struct timespec*))dlsym(handle, "clock_getres"); +++ int (*clock_gettime_func)(clockid_t, struct timespec*) = +++ (int(*)(clockid_t, struct timespec*))dlsym(handle, "clock_gettime"); +++ if (clock_getres_func && clock_gettime_func) { +++ // See if monotonic clock is supported by the kernel. Note that some +++ // early implementations simply return kernel jiffies (updated every +++ // 1/100 or 1/1000 second). It would be bad to use such a low res clock +++ // for nano time (though the monotonic property is still nice to have). +++ // It's fixed in newer kernels, however clock_getres() still returns +++ // 1/HZ. We check if clock_getres() works, but will ignore its reported +++ // resolution for now. Hopefully as people move to new kernels, this +++ // won't be a problem. +++ struct timespec res; +++ struct timespec tp; +++ if (clock_getres_func (CLOCK_MONOTONIC, &res) == 0 && +++ clock_gettime_func(CLOCK_MONOTONIC, &tp) == 0) { +++ // yes, monotonic clock is supported +++ _clock_gettime = clock_gettime_func; +++ } else { +++ // close librt if there is no monotonic clock +++ dlclose(handle); +++ } +++ } +++ } +++} +++ +++#ifndef SYS_clock_getres +++ +++#if defined(IA32) || defined(AMD64) +++#define SYS_clock_getres IA32_ONLY(266) AMD64_ONLY(229) +++#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y) +++#else +++#warning "SYS_clock_getres not defined for this platform, disabling fast_thread_cpu_time" +++#define sys_clock_getres(x,y) -1 +++#endif +++ +++#else +++#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y) +++#endif +++ +++void os::Linux::fast_thread_clock_init() { +++ if (!UseLinuxPosixThreadCPUClocks) { +++ return; +++ } +++ clockid_t clockid; +++ struct timespec tp; +++ int (*pthread_getcpuclockid_func)(pthread_t, clockid_t *) = +++ (int(*)(pthread_t, clockid_t *)) dlsym(RTLD_DEFAULT, "pthread_getcpuclockid"); +++ +++ // Switch to using fast clocks for thread cpu time if +++ // the sys_clock_getres() returns 0 error code. +++ // Note, that some kernels may support the current thread +++ // clock (CLOCK_THREAD_CPUTIME_ID) but not the clocks +++ // returned by the pthread_getcpuclockid(). +++ // If the fast Posix clocks are supported then the sys_clock_getres() +++ // must return at least tp.tv_sec == 0 which means a resolution +++ // better than 1 sec. This is extra check for reliability. +++ +++ if(pthread_getcpuclockid_func && +++ pthread_getcpuclockid_func(_main_thread, &clockid) == 0 && +++ sys_clock_getres(clockid, &tp) == 0 && tp.tv_sec == 0) { +++ +++ _supports_fast_thread_cpu_time = true; +++ _pthread_getcpuclockid = pthread_getcpuclockid_func; +++ } +++} +++ +++jlong os::javaTimeNanos() { +++ if (Linux::supports_monotonic_clock()) { +++ struct timespec tp; +++ int status = Linux::clock_gettime(CLOCK_MONOTONIC, &tp); +++ assert(status == 0, "gettime error"); +++ jlong result = jlong(tp.tv_sec) * (1000 * 1000 * 1000) + jlong(tp.tv_nsec); +++ return result; +++ } else { +++ timeval time; +++ int status = gettimeofday(&time, NULL); +++ assert(status != -1, "linux error"); +++ jlong usecs = jlong(time.tv_sec) * (1000 * 1000) + jlong(time.tv_usec); +++ return 1000 * usecs; +++ } +++} +++ +++void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { +++ if (Linux::supports_monotonic_clock()) { +++ info_ptr->max_value = ALL_64_BITS; +++ +++ // CLOCK_MONOTONIC - amount of time since some arbitrary point in the past +++ info_ptr->may_skip_backward = false; // not subject to resetting or drifting +++ info_ptr->may_skip_forward = false; // not subject to resetting or drifting +++ } else { +++ // gettimeofday - based on time in seconds since the Epoch thus does not wrap +++ info_ptr->max_value = ALL_64_BITS; +++ +++ // gettimeofday is a real time clock so it skips +++ info_ptr->may_skip_backward = true; +++ info_ptr->may_skip_forward = true; +++ } +++ +++ info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time +++} +++ +++// Return the real, user, and system times in seconds from an +++// arbitrary fixed point in the past. +++bool os::getTimesSecs(double* process_real_time, +++ double* process_user_time, +++ double* process_system_time) { +++ struct tms ticks; +++ clock_t real_ticks = times(&ticks); +++ +++ if (real_ticks == (clock_t) (-1)) { +++ return false; +++ } else { +++ double ticks_per_second = (double) clock_tics_per_sec; +++ *process_user_time = ((double) ticks.tms_utime) / ticks_per_second; +++ *process_system_time = ((double) ticks.tms_stime) / ticks_per_second; +++ *process_real_time = ((double) real_ticks) / ticks_per_second; +++ +++ return true; +++ } +++} +++ +++ +++char * os::local_time_string(char *buf, size_t buflen) { +++ struct tm t; +++ time_t long_time; +++ time(&long_time); +++ localtime_r(&long_time, &t); +++ jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", +++ t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, +++ t.tm_hour, t.tm_min, t.tm_sec); +++ return buf; +++} +++ +++struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { +++ return localtime_r(clock, res); +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// runtime exit support +++ +++// Note: os::shutdown() might be called very early during initialization, or +++// called from signal handler. Before adding something to os::shutdown(), make +++// sure it is async-safe and can handle partially initialized VM. +++void os::shutdown() { +++ +++ // allow PerfMemory to attempt cleanup of any persistent resources +++ perfMemory_exit(); +++ +++ // needs to remove object in file system +++ AttachListener::abort(); +++ +++ // flush buffered output, finish log files +++ ostream_abort(); +++ +++ // Check for abort hook +++ abort_hook_t abort_hook = Arguments::abort_hook(); +++ if (abort_hook != NULL) { +++ abort_hook(); +++ } +++ +++} +++ +++// Note: os::abort() might be called very early during initialization, or +++// called from signal handler. Before adding something to os::abort(), make +++// sure it is async-safe and can handle partially initialized VM. +++void os::abort(bool dump_core) { +++ os::shutdown(); +++ if (dump_core) { +++#ifndef PRODUCT +++ fdStream out(defaultStream::output_fd()); +++ out.print_raw("Current thread is "); +++ char buf[16]; +++ jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); +++ out.print_raw_cr(buf); +++ out.print_raw_cr("Dumping core ..."); +++#endif +++ ::abort(); // dump core +++ } +++ +++ ::exit(1); +++} +++ +++// Die immediately, no exit hook, no abort hook, no cleanup. +++void os::die() { +++ // _exit() on LinuxThreads only kills current thread +++ ::abort(); +++} +++ +++// unused on linux for now. +++void os::set_error_file(const char *logfile) {} +++ +++ +++// This method is a copy of JDK's sysGetLastErrorString +++// from src/solaris/hpi/src/system_md.c +++ +++size_t os::lasterror(char *buf, size_t len) { +++ +++ if (errno == 0) return 0; +++ +++ const char *s = ::strerror(errno); +++ size_t n = ::strlen(s); +++ if (n >= len) { +++ n = len - 1; +++ } +++ ::strncpy(buf, s, n); +++ buf[n] = '\0'; +++ return n; +++} +++ +++intx os::current_thread_id() { return (intx)pthread_self(); } +++int os::current_process_id() { +++ +++ // Under the old linux thread library, linux gives each thread +++ // its own process id. Because of this each thread will return +++ // a different pid if this method were to return the result +++ // of getpid(2). Linux provides no api that returns the pid +++ // of the launcher thread for the vm. This implementation +++ // returns a unique pid, the pid of the launcher thread +++ // that starts the vm 'process'. +++ +++ // Under the NPTL, getpid() returns the same pid as the +++ // launcher thread rather than a unique pid per thread. +++ // Use gettid() if you want the old pre NPTL behaviour. +++ +++ // if you are looking for the result of a call to getpid() that +++ // returns a unique pid for the calling thread, then look at the +++ // OSThread::thread_id() method in osThread_linux.hpp file +++ +++ return (int)(_initial_pid ? _initial_pid : getpid()); +++} +++ +++// DLL functions +++ +++const char* os::dll_file_extension() { return ".so"; } +++ +++// This must be hard coded because it's the system's temporary +++// directory not the java application's temp directory, ala java.io.tmpdir. +++const char* os::get_temp_directory() { return "/tmp"; } +++ +++static bool file_exists(const char* filename) { +++ struct stat statbuf; +++ if (filename == NULL || strlen(filename) == 0) { +++ return false; +++ } +++ return os::stat(filename, &statbuf) == 0; +++} +++ +++void os::dll_build_name(char* buffer, size_t buflen, +++ const char* pname, const char* fname) { +++ // Copied from libhpi +++ const size_t pnamelen = pname ? strlen(pname) : 0; +++ +++ // Quietly truncate on buffer overflow. Should be an error. +++ if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { +++ *buffer = '\0'; +++ return; +++ } +++ +++ if (pnamelen == 0) { +++ snprintf(buffer, buflen, "lib%s.so", fname); +++ } else if (strchr(pname, *os::path_separator()) != NULL) { +++ int n; +++ char** pelements = split_path(pname, &n); +++ for (int i = 0 ; i < n ; i++) { +++ // Really shouldn't be NULL, but check can't hurt +++ if (pelements[i] == NULL || strlen(pelements[i]) == 0) { +++ continue; // skip the empty path values +++ } +++ snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname); +++ if (file_exists(buffer)) { +++ break; +++ } +++ } +++ // release the storage +++ for (int i = 0 ; i < n ; i++) { +++ if (pelements[i] != NULL) { +++ FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal); +++ } +++ } +++ if (pelements != NULL) { +++ FREE_C_HEAP_ARRAY(char*, pelements, mtInternal); +++ } +++ } else { +++ snprintf(buffer, buflen, "%s/lib%s.so", pname, fname); +++ } +++} +++ +++const char* os::get_current_directory(char *buf, int buflen) { +++ return getcwd(buf, buflen); +++} +++ +++// check if addr is inside libjvm[_g].so +++bool os::address_is_in_vm(address addr) { +++ static address libjvm_base_addr; +++ Dl_info dlinfo; +++ +++ if (libjvm_base_addr == NULL) { +++ if (dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo) != 0) { +++ libjvm_base_addr = (address)dlinfo.dli_fbase; +++ } +++ assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); +++ } +++ +++ if (dladdr((void *)addr, &dlinfo) != 0) { +++ if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; +++ } +++ +++ return false; +++} +++ +++bool os::dll_address_to_function_name(address addr, char *buf, +++ int buflen, int *offset) { +++ // buf is not optional, but offset is optional +++ assert(buf != NULL, "sanity check"); +++ +++ Dl_info dlinfo; +++ +++ if (dladdr((void*)addr, &dlinfo) != 0) { +++ // see if we have a matching symbol +++ if (dlinfo.dli_saddr != NULL && dlinfo.dli_sname != NULL) { +++ if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) { +++ jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); +++ } +++ if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr; +++ return true; +++ } +++ // no matching symbol so try for just file info +++ if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) { +++ if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase), +++ buf, buflen, offset, dlinfo.dli_fname)) { +++ return true; +++ } +++ } +++ } +++ +++ buf[0] = '\0'; +++ if (offset != NULL) *offset = -1; +++ return false; +++} +++ +++struct _address_to_library_name { +++ address addr; // input : memory address +++ size_t buflen; // size of fname +++ char* fname; // output: library name +++ address base; // library base addr +++}; +++ +++static int address_to_library_name_callback(struct dl_phdr_info *info, +++ size_t size, void *data) { +++ int i; +++ bool found = false; +++ address libbase = NULL; +++ struct _address_to_library_name * d = (struct _address_to_library_name *)data; +++ +++ // iterate through all loadable segments +++ for (i = 0; i < info->dlpi_phnum; i++) { +++ address segbase = (address)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr); +++ if (info->dlpi_phdr[i].p_type == PT_LOAD) { +++ // base address of a library is the lowest address of its loaded +++ // segments. +++ if (libbase == NULL || libbase > segbase) { +++ libbase = segbase; +++ } +++ // see if 'addr' is within current segment +++ if (segbase <= d->addr && +++ d->addr < segbase + info->dlpi_phdr[i].p_memsz) { +++ found = true; +++ } +++ } +++ } +++ +++ // dlpi_name is NULL or empty if the ELF file is executable, return 0 +++ // so dll_address_to_library_name() can fall through to use dladdr() which +++ // can figure out executable name from argv[0]. +++ if (found && info->dlpi_name && info->dlpi_name[0]) { +++ d->base = libbase; +++ if (d->fname) { +++ jio_snprintf(d->fname, d->buflen, "%s", info->dlpi_name); +++ } +++ return 1; +++ } +++ return 0; +++} +++ +++bool os::dll_address_to_library_name(address addr, char* buf, +++ int buflen, int* offset) { +++ // buf is not optional, but offset is optional +++ assert(buf != NULL, "sanity check"); +++ +++ Dl_info dlinfo; +++ struct _address_to_library_name data; +++ +++ // There is a bug in old glibc dladdr() implementation that it could resolve +++ // to wrong library name if the .so file has a base address != NULL. Here +++ // we iterate through the program headers of all loaded libraries to find +++ // out which library 'addr' really belongs to. This workaround can be +++ // removed once the minimum requirement for glibc is moved to 2.3.x. +++ data.addr = addr; +++ data.fname = buf; +++ data.buflen = buflen; +++ data.base = NULL; +++ int rslt = dl_iterate_phdr(address_to_library_name_callback, (void *)&data); +++ +++ if (rslt) { +++ // buf already contains library name +++ if (offset) *offset = addr - data.base; +++ return true; +++ } +++ if (dladdr((void*)addr, &dlinfo) != 0) { +++ if (dlinfo.dli_fname != NULL) { +++ jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); +++ } +++ if (dlinfo.dli_fbase != NULL && offset != NULL) { +++ *offset = addr - (address)dlinfo.dli_fbase; +++ } +++ return true; +++ } +++ +++ buf[0] = '\0'; +++ if (offset) *offset = -1; +++ return false; +++} +++ +++ // Loads .dll/.so and +++ // in case of error it checks if .dll/.so was built for the +++ // same architecture as Hotspot is running on +++ +++ +++// Remember the stack's state. The Linux dynamic linker will change +++// the stack to 'executable' at most once, so we must safepoint only once. +++bool os::Linux::_stack_is_executable = false; +++ +++// VM operation that loads a library. This is necessary if stack protection +++// of the Java stacks can be lost during loading the library. If we +++// do not stop the Java threads, they can stack overflow before the stacks +++// are protected again. +++class VM_LinuxDllLoad: public VM_Operation { +++ private: +++ const char *_filename; +++ char *_ebuf; +++ int _ebuflen; +++ void *_lib; +++ public: +++ VM_LinuxDllLoad(const char *fn, char *ebuf, int ebuflen) : +++ _filename(fn), _ebuf(ebuf), _ebuflen(ebuflen), _lib(NULL) {} +++ VMOp_Type type() const { return VMOp_LinuxDllLoad; } +++ void doit() { +++ _lib = os::Linux::dll_load_in_vmthread(_filename, _ebuf, _ebuflen); +++ os::Linux::_stack_is_executable = true; +++ } +++ void* loaded_library() { return _lib; } +++}; +++ +++void * os::dll_load(const char *filename, char *ebuf, int ebuflen) +++{ +++ void * result = NULL; +++ bool load_attempted = false; +++ +++ // Check whether the library to load might change execution rights +++ // of the stack. If they are changed, the protection of the stack +++ // guard pages will be lost. We need a safepoint to fix this. +++ // +++ // See Linux man page execstack(8) for more info. +++ if (os::uses_stack_guard_pages() && !os::Linux::_stack_is_executable) { +++ ElfFile ef(filename); +++ if (!ef.specifies_noexecstack()) { +++ if (!is_init_completed()) { +++ os::Linux::_stack_is_executable = true; +++ // This is OK - No Java threads have been created yet, and hence no +++ // stack guard pages to fix. +++ // +++ // This should happen only when you are building JDK7 using a very +++ // old version of JDK6 (e.g., with JPRT) and running test_gamma. +++ // +++ // Dynamic loader will make all stacks executable after +++ // this function returns, and will not do that again. +++ assert(Threads::first() == NULL, "no Java threads should exist yet."); +++ } else { +++ warning("You have loaded library %s which might have disabled stack guard. " +++ "The VM will try to fix the stack guard now.\n" +++ "It's highly recommended that you fix the library with " +++ "'execstack -c <libfile>', or link it with '-z noexecstack'.", +++ filename); +++ +++ assert(Thread::current()->is_Java_thread(), "must be Java thread"); +++ JavaThread *jt = JavaThread::current(); +++ if (jt->thread_state() != _thread_in_native) { +++ // This happens when a compiler thread tries to load a hsdis-<arch>.so file +++ // that requires ExecStack. Cannot enter safe point. Let's give up. +++ warning("Unable to fix stack guard. Giving up."); +++ } else { +++ if (!LoadExecStackDllInVMThread) { +++ // This is for the case where the DLL has an static +++ // constructor function that executes JNI code. We cannot +++ // load such DLLs in the VMThread. +++ result = os::Linux::dlopen_helper(filename, ebuf, ebuflen); +++ } +++ +++ ThreadInVMfromNative tiv(jt); +++ debug_only(VMNativeEntryWrapper vew;) +++ +++ VM_LinuxDllLoad op(filename, ebuf, ebuflen); +++ VMThread::execute(&op); +++ if (LoadExecStackDllInVMThread) { +++ result = op.loaded_library(); +++ } +++ load_attempted = true; +++ } +++ } +++ } +++ } +++ +++ if (!load_attempted) { +++ result = os::Linux::dlopen_helper(filename, ebuf, ebuflen); +++ } +++ +++ if (result != NULL) { +++ // Successful loading +++ return result; +++ } +++ +++ Elf32_Ehdr elf_head; +++ int diag_msg_max_length=ebuflen-strlen(ebuf); +++ char* diag_msg_buf=ebuf+strlen(ebuf); +++ +++ if (diag_msg_max_length==0) { +++ // No more space in ebuf for additional diagnostics message +++ return NULL; +++ } +++ +++ +++ int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); +++ +++ if (file_descriptor < 0) { +++ // Can't open library, report dlerror() message +++ return NULL; +++ } +++ +++ bool failed_to_read_elf_head= +++ (sizeof(elf_head)!= +++ (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ; +++ +++ ::close(file_descriptor); +++ if (failed_to_read_elf_head) { +++ // file i/o error - report dlerror() msg +++ return NULL; +++ } +++ +++ typedef struct { +++ Elf32_Half code; // Actual value as defined in elf.h +++ Elf32_Half compat_class; // Compatibility of archs at VM's sense +++ char elf_class; // 32 or 64 bit +++ char endianess; // MSB or LSB +++ char* name; // String representation +++ } arch_t; +++ +++ #ifndef EM_486 +++ #define EM_486 6 /* Intel 80486 */ +++ #endif +++ +++ static const arch_t arch_array[]={ +++ {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, +++ {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, +++ {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, +++ {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, +++ {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, +++ {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, +++ {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, +++ {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, +++ {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"}, +++ {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM"}, +++ {EM_S390, EM_S390, ELFCLASSNONE, ELFDATA2MSB, (char*)"IBM System/390"}, +++ {EM_ALPHA, EM_ALPHA, ELFCLASS64, ELFDATA2LSB, (char*)"Alpha"}, +++ {EM_MIPS_RS3_LE, EM_MIPS_RS3_LE, ELFCLASS32, ELFDATA2LSB, (char*)"MIPSel"}, +++ {EM_MIPS, EM_MIPS, ELFCLASS32, ELFDATA2MSB, (char*)"MIPS"}, +++ {EM_PARISC, EM_PARISC, ELFCLASS32, ELFDATA2MSB, (char*)"PARISC"}, +++ {EM_68K, EM_68K, ELFCLASS32, ELFDATA2MSB, (char*)"M68k"}, +++ {EM_SH, EM_SH, ELFCLASS32, ELFDATA2LSB, (char*)"SH"}, /* Support little endian only*/ +++ {EM_AARCH64, EM_AARCH64, ELFCLASS64, ELFDATA2LSB, (char*)"AARCH64"} /* Support little endian only*/ +++ }; +++ +++ #if (defined IA32) +++ static Elf32_Half running_arch_code=EM_386; +++ #elif (defined AMD64) +++ static Elf32_Half running_arch_code=EM_X86_64; +++ #elif (defined IA64) +++ static Elf32_Half running_arch_code=EM_IA_64; +++ #elif (defined __sparc) && (defined _LP64) +++ static Elf32_Half running_arch_code=EM_SPARCV9; +++ #elif (defined __sparc) && (!defined _LP64) +++ static Elf32_Half running_arch_code=EM_SPARC; +++ #elif (defined __powerpc64__) +++ static Elf32_Half running_arch_code=EM_PPC64; +++ #elif (defined __powerpc__) +++ static Elf32_Half running_arch_code=EM_PPC; +++ #elif (defined ARM) +++ static Elf32_Half running_arch_code=EM_ARM; +++ #elif (defined S390) +++ static Elf32_Half running_arch_code=EM_S390; +++ #elif (defined ALPHA) +++ static Elf32_Half running_arch_code=EM_ALPHA; +++ #elif (defined MIPSEL) +++ static Elf32_Half running_arch_code=EM_MIPS_RS3_LE; +++ #elif (defined PARISC) +++ static Elf32_Half running_arch_code=EM_PARISC; +++ #elif (defined MIPS) +++ static Elf32_Half running_arch_code=EM_MIPS; +++ #elif (defined M68K) +++ static Elf32_Half running_arch_code=EM_68K; +++ #elif (defined SH) +++ static Elf32_Half running_arch_code=EM_SH; +++ #elif (defined AARCH64) +++ static Elf32_Half running_arch_code=EM_AARCH64; +++ #else +++ #error Method os::dll_load requires that one of following is defined:\ +++ IA32, AMD64, IA64, __sparc, __powerpc__, ARM, S390, ALPHA, MIPS, MIPSEL, PARISC, M68K, SH +++ #endif +++ +++ // Identify compatability class for VM's architecture and library's architecture +++ // Obtain string descriptions for architectures +++ +++ arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; +++ int running_arch_index=-1; +++ +++ for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) { +++ if (running_arch_code == arch_array[i].code) { +++ running_arch_index = i; +++ } +++ if (lib_arch.code == arch_array[i].code) { +++ lib_arch.compat_class = arch_array[i].compat_class; +++ lib_arch.name = arch_array[i].name; +++ } +++ } +++ +++ assert(running_arch_index != -1, +++ "Didn't find running architecture code (running_arch_code) in arch_array"); +++ if (running_arch_index == -1) { +++ // Even though running architecture detection failed +++ // we may still continue with reporting dlerror() message +++ return NULL; +++ } +++ +++ if (lib_arch.endianess != arch_array[running_arch_index].endianess) { +++ ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); +++ return NULL; +++ } +++ +++#ifndef S390 +++ if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { +++ ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); +++ return NULL; +++ } +++#endif // !S390 +++ +++ if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { +++ if ( lib_arch.name!=NULL ) { +++ ::snprintf(diag_msg_buf, diag_msg_max_length-1, +++ " (Possible cause: can't load %s-bit .so on a %s-bit platform)", +++ lib_arch.name, arch_array[running_arch_index].name); +++ } else { +++ ::snprintf(diag_msg_buf, diag_msg_max_length-1, +++ " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", +++ lib_arch.code, +++ arch_array[running_arch_index].name); +++ } +++ } +++ +++ return NULL; +++} +++ +++void * os::Linux::dlopen_helper(const char *filename, char *ebuf, int ebuflen) { +++ void * result = ::dlopen(filename, RTLD_LAZY); +++ if (result == NULL) { +++ ::strncpy(ebuf, ::dlerror(), ebuflen - 1); +++ ebuf[ebuflen-1] = '\0'; +++ } +++ return result; +++} +++ +++void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf, int ebuflen) { +++ void * result = NULL; +++ if (LoadExecStackDllInVMThread) { +++ result = dlopen_helper(filename, ebuf, ebuflen); +++ } +++ +++ // Since 7019808, libjvm.so is linked with -noexecstack. If the VM loads a +++ // library that requires an executable stack, or which does not have this +++ // stack attribute set, dlopen changes the stack attribute to executable. The +++ // read protection of the guard pages gets lost. +++ // +++ // Need to check _stack_is_executable again as multiple VM_LinuxDllLoad +++ // may have been queued at the same time. +++ +++ if (!_stack_is_executable) { +++ JavaThread *jt = Threads::first(); +++ +++ while (jt) { +++ if (!jt->stack_guard_zone_unused() && // Stack not yet fully initialized +++ jt->stack_yellow_zone_enabled()) { // No pending stack overflow exceptions +++ if (!os::guard_memory((char *) jt->stack_red_zone_base() - jt->stack_red_zone_size(), +++ jt->stack_yellow_zone_size() + jt->stack_red_zone_size())) { +++ warning("Attempt to reguard stack yellow zone failed."); +++ } +++ } +++ jt = jt->next(); +++ } +++ } +++ +++ return result; +++} +++ +++/* +++ * glibc-2.0 libdl is not MT safe. If you are building with any glibc, +++ * chances are you might want to run the generated bits against glibc-2.0 +++ * libdl.so, so always use locking for any version of glibc. +++ */ +++void* os::dll_lookup(void* handle, const char* name) { +++ pthread_mutex_lock(&dl_mutex); +++ void* res = dlsym(handle, name); +++ pthread_mutex_unlock(&dl_mutex); +++ return res; +++} +++ +++ +++static bool _print_ascii_file(const char* filename, outputStream* st) { +++ int fd = ::open(filename, O_RDONLY); +++ if (fd == -1) { +++ return false; +++ } +++ +++ char buf[32]; +++ int bytes; +++ while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) { +++ st->print_raw(buf, bytes); +++ } +++ +++ ::close(fd); +++ +++ return true; +++} +++ +++bool _print_lsb_file(const char* filename, outputStream* st) { +++ int fd = open(filename, O_RDONLY); +++ if (fd == -1) { +++ return false; +++ } +++ +++ char buf[512], *d_i, *d_r, *d_c; +++ int bytes; +++ +++ if ((bytes = read(fd, buf, sizeof(buf)-1)) == sizeof(buf)-1) { +++ close(fd); +++ return false; +++ } +++ close(fd); +++ +++ buf[bytes] = '\n'; +++ buf[bytes+1] = '\0'; +++ d_i = strstr(buf, "DISTRIB_ID="); +++ d_r = strstr(buf, "DISTRIB_RELEASE="); +++ d_c = strstr(buf, "DISTRIB_CODENAME="); +++ if (!d_i || !d_r || !d_c) { +++ return false; +++ } +++ d_i = strchr(d_i, '=') + 1; *strchrnul(d_i, '\n') = '\0'; +++ d_r = strchr(d_r, '=') + 1; *strchrnul(d_r, '\n') = '\0'; +++ d_c = strchr(d_c, '=') + 1; *strchrnul(d_c, '\n') = '\0'; +++ st->print("%s %s (%s)", d_i, d_r, d_c); +++ +++ return true; +++} +++ +++void os::print_dll_info(outputStream *st) { +++ st->print_cr("Dynamic libraries:"); +++ +++ char fname[32]; +++ pid_t pid = os::Linux::gettid(); +++ +++ jio_snprintf(fname, sizeof(fname), "/proc/%d/maps", pid); +++ +++ if (!_print_ascii_file(fname, st)) { +++ st->print("Can not get library information for pid = %d\n", pid); +++ } +++} +++ +++void os::print_os_info_brief(outputStream* st) { +++ os::Linux::print_distro_info(st); +++ +++ os::Posix::print_uname_info(st); +++ +++ os::Linux::print_libversion_info(st); +++ +++} +++ +++void os::print_os_info(outputStream* st) { +++ st->print("OS:"); +++ +++ os::Linux::print_distro_info(st); +++ +++ os::Posix::print_uname_info(st); +++ +++ // Print warning if unsafe chroot environment detected +++ if (unsafe_chroot_detected) { +++ st->print("WARNING!! "); +++ st->print_cr(unstable_chroot_error); +++ } +++ +++ os::Linux::print_libversion_info(st); +++ +++ os::Posix::print_rlimit_info(st); +++ +++ os::Posix::print_load_average(st); +++ +++ os::Linux::print_full_memory_info(st); +++} +++ +++// Try to identify popular distros. +++// Most Linux distributions have /etc/XXX-release file, which contains +++// the OS version string. Some have more than one /etc/XXX-release file +++// (e.g. Mandrake has both /etc/mandrake-release and /etc/redhat-release.), +++// so the order is important. +++void os::Linux::print_distro_info(outputStream* st) { +++ if (!_print_ascii_file("/etc/mandrake-release", st) && +++ !_print_ascii_file("/etc/sun-release", st) && +++ !_print_ascii_file("/etc/redhat-release", st) && +++ !_print_ascii_file("/etc/SuSE-release", st) && +++ !_print_ascii_file("/etc/turbolinux-release", st) && +++ !_print_ascii_file("/etc/gentoo-release", st) && +++ !_print_lsb_file("/etc/lsb-release", st) && +++ !_print_ascii_file("/etc/debian_version", st) && +++ !_print_ascii_file("/etc/ltib-release", st) && +++ !_print_ascii_file("/etc/angstrom-version", st)) { +++ st->print("Linux"); +++ } +++ st->cr(); +++} +++ +++void os::Linux::print_libversion_info(outputStream* st) { +++ // libc, pthread +++ st->print("libc:"); +++ st->print(os::Linux::glibc_version()); st->print(" "); +++ st->print(os::Linux::libpthread_version()); st->print(" "); +++ if (os::Linux::is_LinuxThreads()) { +++ st->print("(%s stack)", os::Linux::is_floating_stack() ? "floating" : "fixed"); +++ } +++ st->cr(); +++} +++ +++void os::Linux::print_full_memory_info(outputStream* st) { +++ st->print("\n/proc/meminfo:\n"); +++ _print_ascii_file("/proc/meminfo", st); +++ st->cr(); +++} +++ +++void os::print_memory_info(outputStream* st) { +++ +++ st->print("Memory:"); +++ st->print(" %dk page", os::vm_page_size()>>10); +++ +++ // values in struct sysinfo are "unsigned long" +++ struct sysinfo si; +++ sysinfo(&si); +++ +++ st->print(", physical " UINT64_FORMAT "k", +++ os::physical_memory() >> 10); +++ st->print("(" UINT64_FORMAT "k free)", +++ os::available_memory() >> 10); +++ st->print(", swap " UINT64_FORMAT "k", +++ ((jlong)si.totalswap * si.mem_unit) >> 10); +++ st->print("(" UINT64_FORMAT "k free)", +++ ((jlong)si.freeswap * si.mem_unit) >> 10); +++ st->cr(); +++} +++ +++void os::pd_print_cpu_info(outputStream* st) { +++ st->print("\n/proc/cpuinfo:\n"); +++ if (!_print_ascii_file("/proc/cpuinfo", st)) { +++ st->print(" <Not Available>"); +++ } +++ st->cr(); +++} +++ +++// Taken from /usr/include/bits/siginfo.h Supposed to be architecture specific +++// but they're the same for all the linux arch that we support +++// and they're the same for solaris but there's no common place to put this. +++const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR", +++ "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG", +++ "ILL_COPROC", "ILL_BADSTK" }; +++ +++const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV", +++ "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES", +++ "FPE_FLTINV", "FPE_FLTSUB", "FPE_FLTDEN" }; +++ +++const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" }; +++ +++const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" }; +++ +++void os::print_siginfo(outputStream* st, void* siginfo) { +++ st->print("siginfo:"); +++ +++ const int buflen = 100; +++ char buf[buflen]; +++ siginfo_t *si = (siginfo_t*)siginfo; +++ st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen)); +++ if (si->si_errno != 0 && strerror_r(si->si_errno, buf, buflen) == 0) { +++ st->print("si_errno=%s", buf); +++ } else { +++ st->print("si_errno=%d", si->si_errno); +++ } +++ const int c = si->si_code; +++ assert(c > 0, "unexpected si_code"); +++ switch (si->si_signo) { +++ case SIGILL: +++ st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]); +++ st->print(", si_addr=" PTR_FORMAT, si->si_addr); +++ break; +++ case SIGFPE: +++ st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]); +++ st->print(", si_addr=" PTR_FORMAT, si->si_addr); +++ break; +++ case SIGSEGV: +++ st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]); +++ st->print(", si_addr=" PTR_FORMAT, si->si_addr); +++ break; +++ case SIGBUS: +++ st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]); +++ st->print(", si_addr=" PTR_FORMAT, si->si_addr); +++ break; +++ default: +++ st->print(", si_code=%d", si->si_code); +++ // no si_addr +++ } +++ +++ if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && +++ UseSharedSpaces) { +++ FileMapInfo* mapinfo = FileMapInfo::current_info(); +++ if (mapinfo->is_in_shared_space(si->si_addr)) { +++ st->print("\n\nError accessing class data sharing archive." \ +++ " Mapped file inaccessible during execution, " \ +++ " possible disk/network problem."); +++ } +++ } +++ st->cr(); +++} +++ +++ +++static void print_signal_handler(outputStream* st, int sig, +++ char* buf, size_t buflen); +++ +++void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { +++ st->print_cr("Signal Handlers:"); +++ print_signal_handler(st, SIGSEGV, buf, buflen); +++ print_signal_handler(st, SIGBUS , buf, buflen); +++ print_signal_handler(st, SIGFPE , buf, buflen); +++ print_signal_handler(st, SIGPIPE, buf, buflen); +++ print_signal_handler(st, SIGXFSZ, buf, buflen); +++ print_signal_handler(st, SIGILL , buf, buflen); +++ print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen); +++ print_signal_handler(st, SR_signum, buf, buflen); +++ print_signal_handler(st, SHUTDOWN1_SIGNAL, buf, buflen); +++ print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); +++ print_signal_handler(st, SHUTDOWN3_SIGNAL , buf, buflen); +++ print_signal_handler(st, BREAK_SIGNAL, buf, buflen); +++} +++ +++static char saved_jvm_path[MAXPATHLEN] = {0}; +++ +++// Find the full path to the current module, libjvm.so or libjvm_g.so +++void os::jvm_path(char *buf, jint buflen) { +++ // Error checking. +++ if (buflen < MAXPATHLEN) { +++ assert(false, "must use a large-enough buffer"); +++ buf[0] = '\0'; +++ return; +++ } +++ // Lazy resolve the path to current module. +++ if (saved_jvm_path[0] != 0) { +++ strcpy(buf, saved_jvm_path); +++ return; +++ } +++ +++ char dli_fname[MAXPATHLEN]; +++ bool ret = dll_address_to_library_name( +++ CAST_FROM_FN_PTR(address, os::jvm_path), +++ dli_fname, sizeof(dli_fname), NULL); +++ assert(ret, "cannot locate libjvm"); +++ char *rp = NULL; +++ if (ret && dli_fname[0] != '\0') { +++ rp = realpath(dli_fname, buf); +++ } +++ if (rp == NULL) +++ return; +++ +++ if (Arguments::created_by_gamma_launcher()) { +++ // Support for the gamma launcher. Typical value for buf is +++ // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at +++ // the right place in the string, then assume we are installed in a JDK and +++ // we're done. Otherwise, check for a JAVA_HOME environment variable and fix +++ // up the path so it looks like libjvm.so is installed there (append a +++ // fake suffix hotspot/libjvm.so). +++ const char *p = buf + strlen(buf) - 1; +++ for (int count = 0; p > buf && count < 5; ++count) { +++ for (--p; p > buf && *p != '/'; --p) +++ /* empty */ ; +++ } +++ +++ if (strncmp(p, "/jre/lib/", 9) != 0) { +++ // Look for JAVA_HOME in the environment. +++ char* java_home_var = ::getenv("JAVA_HOME"); +++ if (java_home_var != NULL && java_home_var[0] != 0) { +++ char* jrelib_p; +++ int len; +++ +++ // Check the current module name "libjvm.so" or "libjvm_g.so". +++ p = strrchr(buf, '/'); +++ assert(strstr(p, "/libjvm") == p, "invalid library name"); +++ p = strstr(p, "_g") ? "_g" : ""; +++ +++ rp = realpath(java_home_var, buf); +++ if (rp == NULL) +++ return; +++ +++ // determine if this is a legacy image or modules image +++ // modules image doesn't have "jre" subdirectory +++ len = strlen(buf); +++ jrelib_p = buf + len; +++ snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch); +++ if (0 != access(buf, F_OK)) { +++ snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch); +++ } +++ +++ if (0 == access(buf, F_OK)) { +++ // Use current module name "libjvm[_g].so" instead of +++ // "libjvm"debug_only("_g")".so" since for fastdebug version +++ // we should have "libjvm.so" but debug_only("_g") adds "_g"! +++ len = strlen(buf); +++ snprintf(buf + len, buflen-len, "/hotspot/libjvm%s.so", p); +++ } else { +++ // Go back to path of .so +++ rp = realpath(dli_fname, buf); +++ if (rp == NULL) +++ return; +++ } +++ } +++ } +++ } +++ +++ strcpy(saved_jvm_path, buf); +++} +++ +++void os::print_jni_name_prefix_on(outputStream* st, int args_size) { +++ // no prefix required, not even "_" +++} +++ +++void os::print_jni_name_suffix_on(outputStream* st, int args_size) { +++ // no suffix required +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// sun.misc.Signal support +++ +++static volatile jint sigint_count = 0; +++ +++static void +++UserHandler(int sig, void *siginfo, void *context) { +++ // 4511530 - sem_post is serialized and handled by the manager thread. When +++ // the program is interrupted by Ctrl-C, SIGINT is sent to every thread. We +++ // don't want to flood the manager thread with sem_post requests. +++ if (sig == SIGINT && Atomic::add(1, &sigint_count) > 1) +++ return; +++ +++ // Ctrl-C is pressed during error reporting, likely because the error +++ // handler fails to abort. Let VM die immediately. +++ if (sig == SIGINT && is_error_reported()) { +++ os::die(); +++ } +++ +++ os::signal_notify(sig); +++} +++ +++void* os::user_handler() { +++ return CAST_FROM_FN_PTR(void*, UserHandler); +++} +++ +++class Semaphore : public StackObj { +++ public: +++ Semaphore(); +++ ~Semaphore(); +++ void signal(); +++ void wait(); +++ bool trywait(); +++ bool timedwait(unsigned int sec, int nsec); +++ private: +++ sem_t _semaphore; +++}; +++ +++ +++Semaphore::Semaphore() { +++ sem_init(&_semaphore, 0, 0); +++} +++ +++Semaphore::~Semaphore() { +++ sem_destroy(&_semaphore); +++} +++ +++void Semaphore::signal() { +++ sem_post(&_semaphore); +++} +++ +++void Semaphore::wait() { +++ sem_wait(&_semaphore); +++} +++ +++bool Semaphore::trywait() { +++ return sem_trywait(&_semaphore) == 0; +++} +++ +++bool Semaphore::timedwait(unsigned int sec, int nsec) { +++ struct timespec ts; +++ unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec); +++ +++ while (1) { +++ int result = sem_timedwait(&_semaphore, &ts); +++ if (result == 0) { +++ return true; +++ } else if (errno == EINTR) { +++ continue; +++ } else if (errno == ETIMEDOUT) { +++ return false; +++ } else { +++ return false; +++ } +++ } +++} +++ +++extern "C" { +++ typedef void (*sa_handler_t)(int); +++ typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); +++} +++ +++void* os::signal(int signal_number, void* handler) { +++ struct sigaction sigAct, oldSigAct; +++ +++ sigfillset(&(sigAct.sa_mask)); +++ sigAct.sa_flags = SA_RESTART|SA_SIGINFO; +++ sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); +++ +++ if (sigaction(signal_number, &sigAct, &oldSigAct)) { +++ // -1 means registration failed +++ return (void *)-1; +++ } +++ +++ return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); +++} +++ +++void os::signal_raise(int signal_number) { +++ ::raise(signal_number); +++} +++ +++/* +++ * The following code is moved from os.cpp for making this +++ * code platform specific, which it is by its very nature. +++ */ +++ +++// Will be modified when max signal is changed to be dynamic +++int os::sigexitnum_pd() { +++ return NSIG; +++} +++ +++// a counter for each possible signal value +++static volatile jint pending_signals[NSIG+1] = { 0 }; +++ +++// Linux(POSIX) specific hand shaking semaphore. +++static sem_t sig_sem; +++static Semaphore sr_semaphore; +++ +++void os::signal_init_pd() { +++ // Initialize signal structures +++ ::memset((void*)pending_signals, 0, sizeof(pending_signals)); +++ +++ // Initialize signal semaphore +++ ::sem_init(&sig_sem, 0, 0); +++} +++ +++void os::signal_notify(int sig) { +++ Atomic::inc(&pending_signals[sig]); +++ ::sem_post(&sig_sem); +++} +++ +++static int check_pending_signals(bool wait) { +++ Atomic::store(0, &sigint_count); +++ for (;;) { +++ for (int i = 0; i < NSIG + 1; i++) { +++ jint n = pending_signals[i]; +++ if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { +++ return i; +++ } +++ } +++ if (!wait) { +++ return -1; +++ } +++ JavaThread *thread = JavaThread::current(); +++ ThreadBlockInVM tbivm(thread); +++ +++ bool threadIsSuspended; +++ do { +++ thread->set_suspend_equivalent(); +++ // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() +++ ::sem_wait(&sig_sem); +++ +++ // were we externally suspended while we were waiting? +++ threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); +++ if (threadIsSuspended) { +++ // +++ // The semaphore has been incremented, but while we were waiting +++ // another thread suspended us. We don't want to continue running +++ // while suspended because that would surprise the thread that +++ // suspended us. +++ // +++ ::sem_post(&sig_sem); +++ +++ thread->java_suspend_self(); +++ } +++ } while (threadIsSuspended); +++ } +++} +++ +++int os::signal_lookup() { +++ return check_pending_signals(false); +++} +++ +++int os::signal_wait() { +++ return check_pending_signals(true); +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// Virtual Memory +++ +++int os::vm_page_size() { +++ // Seems redundant as all get out +++ assert(os::Linux::page_size() != -1, "must call os::init"); +++ return os::Linux::page_size(); +++} +++ +++// Solaris allocates memory by pages. +++int os::vm_allocation_granularity() { +++ assert(os::Linux::page_size() != -1, "must call os::init"); +++ return os::Linux::page_size(); +++} +++ +++// Rationale behind this function: +++// current (Mon Apr 25 20:12:18 MSD 2005) oprofile drops samples without executable +++// mapping for address (see lookup_dcookie() in the kernel module), thus we cannot get +++// samples for JITted code. Here we create private executable mapping over the code cache +++// and then we can use standard (well, almost, as mapping can change) way to provide +++// info for the reporting script by storing timestamp and location of symbol +++void linux_wrap_code(char* base, size_t size) { +++ static volatile jint cnt = 0; +++ +++ if (!UseOprofile) { +++ return; +++ } +++ +++ char buf[PATH_MAX+1]; +++ int num = Atomic::add(1, &cnt); +++ +++ snprintf(buf, sizeof(buf), "%s/hs-vm-%d-%d", +++ os::get_temp_directory(), os::current_process_id(), num); +++ unlink(buf); +++ +++ int fd = ::open(buf, O_CREAT | O_RDWR, S_IRWXU); +++ +++ if (fd != -1) { +++ off_t rv = ::lseek(fd, size-2, SEEK_SET); +++ if (rv != (off_t)-1) { +++ if (::write(fd, "", 1) == 1) { +++ mmap(base, size, +++ PROT_READ|PROT_WRITE|PROT_EXEC, +++ MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, fd, 0); +++ } +++ } +++ ::close(fd); +++ unlink(buf); +++ } +++} +++ +++static bool recoverable_mmap_error(int err) { +++ // See if the error is one we can let the caller handle. This +++ // list of errno values comes from JBS-6843484. I can't find a +++ // Linux man page that documents this specific set of errno +++ // values so while this list currently matches Solaris, it may +++ // change as we gain experience with this failure mode. +++ switch (err) { +++ case EBADF: +++ case EINVAL: +++ case ENOTSUP: +++ // let the caller deal with these errors +++ return true; +++ +++ default: +++ // Any remaining errors on this OS can cause our reserved mapping +++ // to be lost. That can cause confusion where different data +++ // structures think they have the same memory mapped. The worst +++ // scenario is if both the VM and a library think they have the +++ // same memory mapped. +++ return false; +++ } +++} +++ +++static void warn_fail_commit_memory(char* addr, size_t size, bool exec, +++ int err) { +++ warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT +++ ", %d) failed; error='%s' (errno=%d)", addr, size, exec, +++ strerror(err), err); +++} +++ +++static void warn_fail_commit_memory(char* addr, size_t size, +++ size_t alignment_hint, bool exec, +++ int err) { +++ warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT +++ ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, size, +++ alignment_hint, exec, strerror(err), err); +++} +++ +++static void warn_fail_commit_memory(char* addr, size_t size, +++ size_t alignment_hint, bool exec, +++ int err, const char* msg) { +++ warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT +++ ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d); %s", addr, size, +++ alignment_hint, exec, strerror(err), err, msg); +++} +++ +++// NOTE: Linux kernel does not really reserve the pages for us. +++// All it does is to check if there are enough free pages +++// left at the time of mmap(). This could be a potential +++// problem. +++int os::Linux::commit_memory_impl(char* addr, size_t size, bool exec) { +++ int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; +++ uintptr_t res = (uintptr_t) ::mmap(addr, size, prot, +++ MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0); +++ if (res != (uintptr_t) MAP_FAILED) { +++ if (UseNUMAInterleaving) { +++ numa_make_global(addr, size); +++ } +++ return 0; +++ } +++ +++ int err = errno; // save errno from mmap() call above +++ +++ if (!recoverable_mmap_error(err)) { +++ warn_fail_commit_memory(addr, size, exec, err); +++ vm_exit_out_of_memory(size, "committing reserved memory."); +++ } +++ +++ return err; +++} +++ +++bool os::pd_commit_memory(char* addr, size_t size, bool exec) { +++ return os::Linux::commit_memory_impl(addr, size, exec) == 0; +++} +++ +++void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec, +++ const char* mesg) { +++ assert(mesg != NULL, "mesg must be specified"); +++ int err = os::Linux::commit_memory_impl(addr, size, exec); +++ if (err != 0) { +++ // the caller wants all commit errors to exit with the specified mesg: +++ warn_fail_commit_memory(addr, size, exec, err); +++ vm_exit_out_of_memory(size, mesg); +++ } +++} +++ +++// Define MAP_HUGETLB here so we can build HotSpot on old systems. +++#ifndef MAP_HUGETLB +++#define MAP_HUGETLB 0x40000 +++#endif +++ +++// Define MADV_HUGEPAGE here so we can build HotSpot on old systems. +++#ifndef MADV_HUGEPAGE +++#define MADV_HUGEPAGE 14 +++#endif +++ +++volatile jint os::Linux::num_largepage_commit_fails = 0; +++ +++int os::Linux::commit_memory_impl(char* addr, size_t size, +++ size_t alignment_hint, bool exec) { +++ int err; +++ if (UseHugeTLBFS && alignment_hint > (size_t)vm_page_size()) { +++ int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE; +++ uintptr_t res = +++ (uintptr_t) ::mmap(addr, size, prot, +++ MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_HUGETLB, +++ -1, 0); +++ if (res != (uintptr_t) MAP_FAILED) { +++ if (UseNUMAInterleaving) { +++ numa_make_global(addr, size); +++ } +++ return 0; +++ } +++ +++ err = errno; // save errno from mmap() call above +++ +++ if (!recoverable_mmap_error(err)) { +++ // However, it is not clear that this loss of our reserved mapping +++ // happens with large pages on Linux or that we cannot recover +++ // from the loss. For now, we just issue a warning and we don't +++ // call vm_exit_out_of_memory(). This issue is being tracked by +++ // JBS-8007074. +++ Atomic::inc(&os::Linux::num_largepage_commit_fails); +++ warn_fail_commit_memory(addr, size, alignment_hint, exec, err, +++ "Cannot allocate large pages, falling back to regular pages"); +++// vm_exit_out_of_memory(size, "committing reserved memory."); +++ } +++ // Fall through and try to use small pages +++ } +++ +++ err = os::Linux::commit_memory_impl(addr, size, exec); +++ if (err == 0) { +++ realign_memory(addr, size, alignment_hint); +++ } +++ return err; +++} +++ +++bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint, +++ bool exec) { +++ return os::Linux::commit_memory_impl(addr, size, alignment_hint, exec) == 0; +++} +++ +++void os::pd_commit_memory_or_exit(char* addr, size_t size, +++ size_t alignment_hint, bool exec, +++ const char* mesg) { +++ assert(mesg != NULL, "mesg must be specified"); +++ int err = os::Linux::commit_memory_impl(addr, size, alignment_hint, exec); +++ if (err != 0) { +++ // the caller wants all commit errors to exit with the specified mesg: +++ warn_fail_commit_memory(addr, size, alignment_hint, exec, err); +++ vm_exit_out_of_memory(size, mesg); +++ } +++} +++ +++void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) { +++ if (UseHugeTLBFS && alignment_hint > (size_t)vm_page_size()) { +++ // We don't check the return value: madvise(MADV_HUGEPAGE) may not +++ // be supported or the memory may already be backed by huge pages. +++ ::madvise(addr, bytes, MADV_HUGEPAGE); +++ } +++} +++ +++void os::pd_free_memory(char *addr, size_t bytes, size_t alignment_hint) { +++ // This method works by doing an mmap over an existing mmaping and effectively discarding +++ // the existing pages. However it won't work for SHM-based large pages that cannot be +++ // uncommitted at all. We don't do anything in this case to avoid creating a segment with +++ // small pages on top of the SHM segment. This method always works for small pages, so we +++ // allow that in any case. +++ if (alignment_hint <= (size_t)os::vm_page_size() || !UseSHM) { +++ commit_memory(addr, bytes, alignment_hint, !ExecMem); +++ } +++} +++ +++void os::numa_make_global(char *addr, size_t bytes) { +++ Linux::numa_interleave_memory(addr, bytes); +++} +++ +++void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { +++ Linux::numa_tonode_memory(addr, bytes, lgrp_hint); +++} +++ +++bool os::numa_topology_changed() { return false; } +++ +++size_t os::numa_get_groups_num() { +++ int max_node = Linux::numa_max_node(); +++ return max_node > 0 ? max_node + 1 : 1; +++} +++ +++int os::numa_get_group_id() { +++ int cpu_id = Linux::sched_getcpu(); +++ if (cpu_id != -1) { +++ int lgrp_id = Linux::get_node_by_cpu(cpu_id); +++ if (lgrp_id != -1) { +++ return lgrp_id; +++ } +++ } +++ return 0; +++} +++ +++size_t os::numa_get_leaf_groups(int *ids, size_t size) { +++ for (size_t i = 0; i < size; i++) { +++ ids[i] = i; +++ } +++ return size; +++} +++ +++bool os::get_page_info(char *start, page_info* info) { +++ return false; +++} +++ +++char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { +++ return end; +++} +++ +++ +++int os::Linux::sched_getcpu_syscall(void) { +++ unsigned int cpu; +++ int retval = -1; +++ +++#if defined(IA32) +++# ifndef SYS_getcpu +++# define SYS_getcpu 318 +++# endif +++ retval = syscall(SYS_getcpu, &cpu, NULL, NULL); +++#elif defined(AMD64) +++// Unfortunately we have to bring all these macros here from vsyscall.h +++// to be able to compile on old linuxes. +++# define __NR_vgetcpu 2 +++# define VSYSCALL_START (-10UL << 20) +++# define VSYSCALL_SIZE 1024 +++# define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr)) +++ typedef long (*vgetcpu_t)(unsigned int *cpu, unsigned int *node, unsigned long *tcache); +++ vgetcpu_t vgetcpu = (vgetcpu_t)VSYSCALL_ADDR(__NR_vgetcpu); +++ retval = vgetcpu(&cpu, NULL, NULL); +++#endif +++ +++ return (retval == -1) ? retval : cpu; +++} +++ +++// Something to do with the numa-aware allocator needs these symbols +++extern "C" JNIEXPORT void numa_warn(int number, char *where, ...) { } +++extern "C" JNIEXPORT void numa_error(char *where) { } +++extern "C" JNIEXPORT int fork1() { return fork(); } +++ +++ +++// If we are running with libnuma version > 2, then we should +++// be trying to use symbols with versions 1.1 +++// If we are running with earlier version, which did not have symbol versions, +++// we should use the base version. +++void* os::Linux::libnuma_dlsym(void* handle, const char *name) { +++ void *f = dlvsym(handle, name, "libnuma_1.1"); +++ if (f == NULL) { +++ f = dlsym(handle, name); +++ } +++ return f; +++} +++ +++bool os::Linux::libnuma_init() { +++ // sched_getcpu() should be in libc. +++ set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, +++ dlsym(RTLD_DEFAULT, "sched_getcpu"))); +++ +++ // If it's not, try a direct syscall. +++ if (sched_getcpu() == -1) +++ set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, (void*)&sched_getcpu_syscall)); +++ +++ if (sched_getcpu() != -1) { // Does it work? +++ void *handle = dlopen("libnuma.so.1", RTLD_LAZY); +++ if (handle != NULL) { +++ set_numa_node_to_cpus(CAST_TO_FN_PTR(numa_node_to_cpus_func_t, +++ libnuma_dlsym(handle, "numa_node_to_cpus"))); +++ set_numa_max_node(CAST_TO_FN_PTR(numa_max_node_func_t, +++ libnuma_dlsym(handle, "numa_max_node"))); +++ set_numa_available(CAST_TO_FN_PTR(numa_available_func_t, +++ libnuma_dlsym(handle, "numa_available"))); +++ set_numa_tonode_memory(CAST_TO_FN_PTR(numa_tonode_memory_func_t, +++ libnuma_dlsym(handle, "numa_tonode_memory"))); +++ set_numa_interleave_memory(CAST_TO_FN_PTR(numa_interleave_memory_func_t, +++ libnuma_dlsym(handle, "numa_interleave_memory"))); +++ +++ +++ if (numa_available() != -1) { +++ set_numa_all_nodes((unsigned long*)libnuma_dlsym(handle, "numa_all_nodes")); +++ // Create a cpu -> node mapping +++ _cpu_to_node = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(0, true); +++ rebuild_cpu_to_node_map(); +++ return true; +++ } +++ } +++ } +++ return false; +++} +++ +++// rebuild_cpu_to_node_map() constructs a table mapping cpud id to node id. +++// The table is later used in get_node_by_cpu(). +++void os::Linux::rebuild_cpu_to_node_map() { +++ const size_t NCPUS = 32768; // Since the buffer size computation is very obscure +++ // in libnuma (possible values are starting from 16, +++ // and continuing up with every other power of 2, but less +++ // than the maximum number of CPUs supported by kernel), and +++ // is a subject to change (in libnuma version 2 the requirements +++ // are more reasonable) we'll just hardcode the number they use +++ // in the library. +++ const size_t BitsPerCLong = sizeof(long) * CHAR_BIT; +++ +++ size_t cpu_num = os::active_processor_count(); +++ size_t cpu_map_size = NCPUS / BitsPerCLong; +++ size_t cpu_map_valid_size = +++ MIN2((cpu_num + BitsPerCLong - 1) / BitsPerCLong, cpu_map_size); +++ +++ cpu_to_node()->clear(); +++ cpu_to_node()->at_grow(cpu_num - 1); +++ size_t node_num = numa_get_groups_num(); +++ +++ unsigned long *cpu_map = NEW_C_HEAP_ARRAY(unsigned long, cpu_map_size, mtInternal); +++ for (size_t i = 0; i < node_num; i++) { +++ if (numa_node_to_cpus(i, cpu_map, cpu_map_size * sizeof(unsigned long)) != -1) { +++ for (size_t j = 0; j < cpu_map_valid_size; j++) { +++ if (cpu_map[j] != 0) { +++ for (size_t k = 0; k < BitsPerCLong; k++) { +++ if (cpu_map[j] & (1UL << k)) { +++ cpu_to_node()->at_put(j * BitsPerCLong + k, i); +++ } +++ } +++ } +++ } +++ } +++ } +++ FREE_C_HEAP_ARRAY(unsigned long, cpu_map, mtInternal); +++} +++ +++int os::Linux::get_node_by_cpu(int cpu_id) { +++ if (cpu_to_node() != NULL && cpu_id >= 0 && cpu_id < cpu_to_node()->length()) { +++ return cpu_to_node()->at(cpu_id); +++ } +++ return -1; +++} +++ +++GrowableArray<int>* os::Linux::_cpu_to_node; +++os::Linux::sched_getcpu_func_t os::Linux::_sched_getcpu; +++os::Linux::numa_node_to_cpus_func_t os::Linux::_numa_node_to_cpus; +++os::Linux::numa_max_node_func_t os::Linux::_numa_max_node; +++os::Linux::numa_available_func_t os::Linux::_numa_available; +++os::Linux::numa_tonode_memory_func_t os::Linux::_numa_tonode_memory; +++os::Linux::numa_interleave_memory_func_t os::Linux::_numa_interleave_memory; +++unsigned long* os::Linux::_numa_all_nodes; +++ +++bool os::pd_uncommit_memory(char* addr, size_t size) { +++ uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE, +++ MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0); +++ return res != (uintptr_t) MAP_FAILED; +++} +++ +++static +++address get_stack_commited_bottom(address bottom, size_t size) { +++ address nbot = bottom; +++ address ntop = bottom + size; +++ +++ size_t page_sz = os::vm_page_size(); +++ unsigned pages = size / page_sz; +++ +++ unsigned char vec[1]; +++ unsigned imin = 1, imax = pages + 1, imid; +++ int mincore_return_value; +++ +++ while (imin < imax) { +++ imid = (imax + imin) / 2; +++ nbot = ntop - (imid * page_sz); +++ +++ // Use a trick with mincore to check whether the page is mapped or not. +++ // mincore sets vec to 1 if page resides in memory and to 0 if page +++ // is swapped output but if page we are asking for is unmapped +++ // it returns -1,ENOMEM +++ mincore_return_value = mincore(nbot, page_sz, vec); +++ +++ if (mincore_return_value == -1) { +++ // Page is not mapped go up +++ // to find first mapped page +++ if (errno != EAGAIN) { +++ assert(errno == ENOMEM, "Unexpected mincore errno"); +++ imax = imid; +++ } +++ } else { +++ // Page is mapped go down +++ // to find first not mapped page +++ imin = imid + 1; +++ } +++ } +++ +++ nbot = nbot + page_sz; +++ +++ // Adjust stack bottom one page up if last checked page is not mapped +++ if (mincore_return_value == -1) { +++ nbot = nbot + page_sz; +++ } +++ +++ return nbot; +++} +++ +++ +++// Linux uses a growable mapping for the stack, and if the mapping for +++// the stack guard pages is not removed when we detach a thread the +++// stack cannot grow beyond the pages where the stack guard was +++// mapped. If at some point later in the process the stack expands to +++// that point, the Linux kernel cannot expand the stack any further +++// because the guard pages are in the way, and a segfault occurs. +++// +++// However, it's essential not to split the stack region by unmapping +++// a region (leaving a hole) that's already part of the stack mapping, +++// so if the stack mapping has already grown beyond the guard pages at +++// the time we create them, we have to truncate the stack mapping. +++// So, we need to know the extent of the stack mapping when +++// create_stack_guard_pages() is called. +++ +++// We only need this for stacks that are growable: at the time of +++// writing thread stacks don't use growable mappings (i.e. those +++// creeated with MAP_GROWSDOWN), and aren't marked "[stack]", so this +++// only applies to the main thread. +++ +++// If the (growable) stack mapping already extends beyond the point +++// where we're going to put our guard pages, truncate the mapping at +++// that point by munmap()ping it. This ensures that when we later +++// munmap() the guard pages we don't leave a hole in the stack +++// mapping. This only affects the main/initial thread +++ +++bool os::pd_create_stack_guard_pages(char* addr, size_t size) { +++ +++ if (os::Linux::is_initial_thread()) { +++ // As we manually grow stack up to bottom inside create_attached_thread(), +++ // it's likely that os::Linux::initial_thread_stack_bottom is mapped and +++ // we don't need to do anything special. +++ // Check it first, before calling heavy function. +++ uintptr_t stack_extent = (uintptr_t) os::Linux::initial_thread_stack_bottom(); +++ unsigned char vec[1]; +++ +++ if (mincore((address)stack_extent, os::vm_page_size(), vec) == -1) { +++ // Fallback to slow path on all errors, including EAGAIN +++ stack_extent = (uintptr_t) get_stack_commited_bottom( +++ os::Linux::initial_thread_stack_bottom(), +++ (size_t)addr - stack_extent); +++ } +++ +++ if (stack_extent < (uintptr_t)addr) { +++ ::munmap((void*)stack_extent, (uintptr_t)(addr - stack_extent)); +++ } +++ } +++ +++ return os::commit_memory(addr, size, !ExecMem); +++} +++ +++// If this is a growable mapping, remove the guard pages entirely by +++// munmap()ping them. If not, just call uncommit_memory(). This only +++// affects the main/initial thread, but guard against future OS changes +++// It's safe to always unmap guard pages for initial thread because we +++// always place it right after end of the mapped region +++ +++bool os::remove_stack_guard_pages(char* addr, size_t size) { +++ uintptr_t stack_extent, stack_base; +++ +++ if (os::Linux::is_initial_thread()) { +++ return ::munmap(addr, size) == 0; +++ } +++ +++ return os::uncommit_memory(addr, size); +++} +++ +++static address _highest_vm_reserved_address = NULL; +++ +++// If 'fixed' is true, anon_mmap() will attempt to reserve anonymous memory +++// at 'requested_addr'. If there are existing memory mappings at the same +++// location, however, they will be overwritten. If 'fixed' is false, +++// 'requested_addr' is only treated as a hint, the return value may or +++// may not start from the requested address. Unlike Linux mmap(), this +++// function returns NULL to indicate failure. +++static char* anon_mmap(char* requested_addr, size_t bytes, bool fixed) { +++ char * addr; +++ int flags; +++ +++ flags = MAP_PRIVATE | MAP_NORESERVE | MAP_ANONYMOUS; +++ if (fixed) { +++ assert((uintptr_t)requested_addr % os::Linux::page_size() == 0, "unaligned address"); +++ flags |= MAP_FIXED; +++ } +++ +++ // Map uncommitted pages PROT_READ and PROT_WRITE, change access +++ // to PROT_EXEC if executable when we commit the page. +++ addr = (char*)::mmap(requested_addr, bytes, PROT_READ|PROT_WRITE, +++ flags, -1, 0); +++ +++ if (addr != MAP_FAILED) { +++ // anon_mmap() should only get called during VM initialization, +++ // don't need lock (actually we can skip locking even it can be called +++ // from multiple threads, because _highest_vm_reserved_address is just a +++ // hint about the upper limit of non-stack memory regions.) +++ if ((address)addr + bytes > _highest_vm_reserved_address) { +++ _highest_vm_reserved_address = (address)addr + bytes; +++ } +++ } +++ +++ return addr == MAP_FAILED ? NULL : addr; +++} +++ +++// Don't update _highest_vm_reserved_address, because there might be memory +++// regions above addr + size. If so, releasing a memory region only creates +++// a hole in the address space, it doesn't help prevent heap-stack collision. +++// +++static int anon_munmap(char * addr, size_t size) { +++ return ::munmap(addr, size) == 0; +++} +++ +++char* os::pd_reserve_memory(size_t bytes, char* requested_addr, +++ size_t alignment_hint) { +++ return anon_mmap(requested_addr, bytes, (requested_addr != NULL)); +++} +++ +++bool os::pd_release_memory(char* addr, size_t size) { +++ return anon_munmap(addr, size); +++} +++ +++static address highest_vm_reserved_address() { +++ return _highest_vm_reserved_address; +++} +++ +++static bool linux_mprotect(char* addr, size_t size, int prot) { +++ // Linux wants the mprotect address argument to be page aligned. +++ char* bottom = (char*)align_size_down((intptr_t)addr, os::Linux::page_size()); +++ +++ // According to SUSv3, mprotect() should only be used with mappings +++ // established by mmap(), and mmap() always maps whole pages. Unaligned +++ // 'addr' likely indicates problem in the VM (e.g. trying to change +++ // protection of malloc'ed or statically allocated memory). Check the +++ // caller if you hit this assert. +++ assert(addr == bottom, "sanity check"); +++ +++ size = align_size_up(pointer_delta(addr, bottom, 1) + size, os::Linux::page_size()); +++ return ::mprotect(bottom, size, prot) == 0; +++} +++ +++// Set protections specified +++bool os::protect_memory(char* addr, size_t bytes, ProtType prot, +++ bool is_committed) { +++ unsigned int p = 0; +++ switch (prot) { +++ case MEM_PROT_NONE: p = PROT_NONE; break; +++ case MEM_PROT_READ: p = PROT_READ; break; +++ case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; +++ case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; +++ default: +++ ShouldNotReachHere(); +++ } +++ // is_committed is unused. +++ return linux_mprotect(addr, bytes, p); +++} +++ +++bool os::guard_memory(char* addr, size_t size) { +++ return linux_mprotect(addr, size, PROT_NONE); +++} +++ +++bool os::unguard_memory(char* addr, size_t size) { +++ return linux_mprotect(addr, size, PROT_READ|PROT_WRITE); +++} +++ +++bool os::Linux::hugetlbfs_sanity_check(bool warn, size_t page_size) { +++ bool result = false; +++ void *p = mmap (NULL, page_size, PROT_READ|PROT_WRITE, +++ MAP_ANONYMOUS|MAP_PRIVATE|MAP_HUGETLB, +++ -1, 0); +++ +++ if (p != MAP_FAILED) { +++ // We don't know if this really is a huge page or not. +++ FILE *fp = fopen("/proc/self/maps", "r"); +++ if (fp) { +++ while (!feof(fp)) { +++ char chars[257]; +++ long x = 0; +++ if (fgets(chars, sizeof(chars), fp)) { +++ if (sscanf(chars, "%lx-%*x", &x) == 1 +++ && x == (long)p) { +++ if (strstr (chars, "hugepage")) { +++ result = true; +++ break; +++ } +++ } +++ } +++ } +++ fclose(fp); +++ } +++ munmap (p, page_size); +++ if (result) +++ return true; +++ } +++ +++ if (warn) { +++ warning("HugeTLBFS is not supported by the operating system."); +++ } +++ +++ return result; +++} +++ +++/* +++* Set the coredump_filter bits to include largepages in core dump (bit 6) +++* +++* From the coredump_filter documentation: +++* +++* - (bit 0) anonymous private memory +++* - (bit 1) anonymous shared memory +++* - (bit 2) file-backed private memory +++* - (bit 3) file-backed shared memory +++* - (bit 4) ELF header pages in file-backed private memory areas (it is +++* effective only if the bit 2 is cleared) +++* - (bit 5) hugetlb private memory +++* - (bit 6) hugetlb shared memory +++*/ +++static void set_coredump_filter(void) { +++ FILE *f; +++ long cdm; +++ +++ if ((f = fopen("/proc/self/coredump_filter", "r+")) == NULL) { +++ return; +++ } +++ +++ if (fscanf(f, "%lx", &cdm) != 1) { +++ fclose(f); +++ return; +++ } +++ +++ rewind(f); +++ +++ if ((cdm & LARGEPAGES_BIT) == 0) { +++ cdm |= LARGEPAGES_BIT; +++ fprintf(f, "%#lx", cdm); +++ } +++ +++ fclose(f); +++} +++ +++// Large page support +++ +++static size_t _large_page_size = 0; +++ +++void os::large_page_init() { +++ if (!UseLargePages) { +++ UseHugeTLBFS = false; +++ UseSHM = false; +++ return; +++ } +++ +++ if (FLAG_IS_DEFAULT(UseHugeTLBFS) && FLAG_IS_DEFAULT(UseSHM)) { +++ // If UseLargePages is specified on the command line try both methods, +++ // if it's default, then try only HugeTLBFS. +++ if (FLAG_IS_DEFAULT(UseLargePages)) { +++ UseHugeTLBFS = true; +++ } else { +++ UseHugeTLBFS = UseSHM = true; +++ } +++ } +++ +++ if (LargePageSizeInBytes) { +++ _large_page_size = LargePageSizeInBytes; +++ } else { +++ // large_page_size on Linux is used to round up heap size. x86 uses either +++ // 2M or 4M page, depending on whether PAE (Physical Address Extensions) +++ // mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. IA64 can use +++ // page as large as 256M. +++ // +++ // Here we try to figure out page size by parsing /proc/meminfo and looking +++ // for a line with the following format: +++ // Hugepagesize: 2048 kB +++ // +++ // If we can't determine the value (e.g. /proc is not mounted, or the text +++ // format has been changed), we'll use the largest page size supported by +++ // the processor. +++ +++#ifndef ZERO +++ _large_page_size = IA32_ONLY(4 * M) AMD64_ONLY(2 * M) IA64_ONLY(256 * M) SPARC_ONLY(4 * M) +++ ARM_ONLY(2 * M) PPC_ONLY(4 * M); +++#endif // ZERO +++ +++ FILE *fp = fopen("/proc/meminfo", "r"); +++ if (fp) { +++ while (!feof(fp)) { +++ int x = 0; +++ char buf[16]; +++ if (fscanf(fp, "Hugepagesize: %d", &x) == 1) { +++ if (x && fgets(buf, sizeof(buf), fp) && strcmp(buf, " kB\n") == 0) { +++ _large_page_size = x * K; +++ break; +++ } +++ } else { +++ // skip to next line +++ for (;;) { +++ int ch = fgetc(fp); +++ if (ch == EOF || ch == (int)'\n') break; +++ } +++ } +++ } +++ fclose(fp); +++ } +++ } +++ +++ // print a warning if any large page related flag is specified on command line +++ bool warn_on_failure = !FLAG_IS_DEFAULT(UseHugeTLBFS); +++ +++ const size_t default_page_size = (size_t)Linux::page_size(); +++ if (_large_page_size > default_page_size) { +++ _page_sizes[0] = _large_page_size; +++ _page_sizes[1] = default_page_size; +++ _page_sizes[2] = 0; +++ } +++ UseHugeTLBFS = UseHugeTLBFS && +++ Linux::hugetlbfs_sanity_check(warn_on_failure, _large_page_size); +++ +++ if (UseHugeTLBFS) +++ UseSHM = false; +++ +++ UseLargePages = UseHugeTLBFS || UseSHM; +++ +++ set_coredump_filter(); +++} +++ +++#ifndef SHM_HUGETLB +++#define SHM_HUGETLB 04000 +++#endif +++ +++char* os::reserve_memory_special(size_t bytes, char* req_addr, bool exec) { +++ // "exec" is passed in but not used. Creating the shared image for +++ // the code cache doesn't have an SHM_X executable permission to check. +++ assert(UseLargePages && UseSHM, "only for SHM large pages"); +++ +++ key_t key = IPC_PRIVATE; +++ char *addr; +++ +++ bool warn_on_failure = UseLargePages && +++ (!FLAG_IS_DEFAULT(UseLargePages) || +++ !FLAG_IS_DEFAULT(LargePageSizeInBytes) +++ ); +++ char msg[128]; +++ +++ // Create a large shared memory region to attach to based on size. +++ // Currently, size is the total size of the heap +++ int shmid = shmget(key, bytes, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W); +++ if (shmid == -1) { +++ // Possible reasons for shmget failure: +++ // 1. shmmax is too small for Java heap. +++ // > check shmmax value: cat /proc/sys/kernel/shmmax +++ // > increase shmmax value: echo "0xffffffff" > /proc/sys/kernel/shmmax +++ // 2. not enough large page memory. +++ // > check available large pages: cat /proc/meminfo +++ // > increase amount of large pages: +++ // echo new_value > /proc/sys/vm/nr_hugepages +++ // Note 1: different Linux may use different name for this property, +++ // e.g. on Redhat AS-3 it is "hugetlb_pool". +++ // Note 2: it's possible there's enough physical memory available but +++ // they are so fragmented after a long run that they can't +++ // coalesce into large pages. Try to reserve large pages when +++ // the system is still "fresh". +++ if (warn_on_failure) { +++ jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno); +++ warning(msg); +++ } +++ return NULL; +++ } +++ +++ // attach to the region +++ addr = (char*)shmat(shmid, req_addr, 0); +++ int err = errno; +++ +++ // Remove shmid. If shmat() is successful, the actual shared memory segment +++ // will be deleted when it's detached by shmdt() or when the process +++ // terminates. If shmat() is not successful this will remove the shared +++ // segment immediately. +++ shmctl(shmid, IPC_RMID, NULL); +++ +++ if ((intptr_t)addr == -1) { +++ if (warn_on_failure) { +++ jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err); +++ warning(msg); +++ } +++ return NULL; +++ } +++ +++ if ((addr != NULL) && UseNUMAInterleaving) { +++ numa_make_global(addr, bytes); +++ } +++ +++ // The memory is committed +++ MemTracker::record_virtual_memory_reserve_and_commit((address)addr, bytes, mtNone, CALLER_PC); +++ +++ return addr; +++} +++ +++bool os::release_memory_special(char* base, size_t bytes) { +++ MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker(); +++ // detaching the SHM segment will also delete it, see reserve_memory_special() +++ int rslt = shmdt(base); +++ if (rslt == 0) { +++ tkr.record((address)base, bytes); +++ return true; +++ } else { +++ tkr.discard(); +++ return false; +++ } +++} +++ +++size_t os::large_page_size() { +++ return _large_page_size; +++} +++ +++// HugeTLBFS allows application to commit large page memory on demand; +++// with SysV SHM the entire memory region must be allocated as shared +++// memory. +++bool os::can_commit_large_page_memory() { +++ return UseHugeTLBFS; +++} +++ +++bool os::can_execute_large_page_memory() { +++ return UseHugeTLBFS; +++} +++ +++// Reserve memory at an arbitrary address, only if that area is +++// available (and not reserved for something else). +++ +++char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) { +++ const int max_tries = 10; +++ char* base[max_tries]; +++ size_t size[max_tries]; +++ const size_t gap = 0x000000; +++ +++ // Assert only that the size is a multiple of the page size, since +++ // that's all that mmap requires, and since that's all we really know +++ // about at this low abstraction level. If we need higher alignment, +++ // we can either pass an alignment to this method or verify alignment +++ // in one of the methods further up the call chain. See bug 5044738. +++ assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); +++ +++ // Repeatedly allocate blocks until the block is allocated at the +++ // right spot. Give up after max_tries. Note that reserve_memory() will +++ // automatically update _highest_vm_reserved_address if the call is +++ // successful. The variable tracks the highest memory address every reserved +++ // by JVM. It is used to detect heap-stack collision if running with +++ // fixed-stack LinuxThreads. Because here we may attempt to reserve more +++ // space than needed, it could confuse the collision detecting code. To +++ // solve the problem, save current _highest_vm_reserved_address and +++ // calculate the correct value before return. +++ address old_highest = _highest_vm_reserved_address; +++ +++ // Linux mmap allows caller to pass an address as hint; give it a try first, +++ // if kernel honors the hint then we can return immediately. +++ char * addr = anon_mmap(requested_addr, bytes, false); +++ if (addr == requested_addr) { +++ return requested_addr; +++ } +++ +++ if (addr != NULL) { +++ // mmap() is successful but it fails to reserve at the requested address +++ anon_munmap(addr, bytes); +++ } +++ +++ int i; +++ for (i = 0; i < max_tries; ++i) { +++ base[i] = reserve_memory(bytes); +++ +++ if (base[i] != NULL) { +++ // Is this the block we wanted? +++ if (base[i] == requested_addr) { +++ size[i] = bytes; +++ break; +++ } +++ +++ // Does this overlap the block we wanted? Give back the overlapped +++ // parts and try again. +++ +++ size_t top_overlap = requested_addr + (bytes + gap) - base[i]; +++ if (top_overlap >= 0 && top_overlap < bytes) { +++ unmap_memory(base[i], top_overlap); +++ base[i] += top_overlap; +++ size[i] = bytes - top_overlap; +++ } else { +++ size_t bottom_overlap = base[i] + bytes - requested_addr; +++ if (bottom_overlap >= 0 && bottom_overlap < bytes) { +++ unmap_memory(requested_addr, bottom_overlap); +++ size[i] = bytes - bottom_overlap; +++ } else { +++ size[i] = bytes; +++ } +++ } +++ } +++ } +++ +++ // Give back the unused reserved pieces. +++ +++ for (int j = 0; j < i; ++j) { +++ if (base[j] != NULL) { +++ unmap_memory(base[j], size[j]); +++ } +++ } +++ +++ if (i < max_tries) { +++ _highest_vm_reserved_address = MAX2(old_highest, (address)requested_addr + bytes); +++ return requested_addr; +++ } else { +++ _highest_vm_reserved_address = old_highest; +++ return NULL; +++ } +++} +++ +++size_t os::read(int fd, void *buf, unsigned int nBytes) { +++ return ::read(fd, buf, nBytes); +++} +++ +++// TODO-FIXME: reconcile Solaris' os::sleep with the linux variation. +++// Solaris uses poll(), linux uses park(). +++// Poll() is likely a better choice, assuming that Thread.interrupt() +++// generates a SIGUSRx signal. Note that SIGUSR1 can interfere with +++// SIGSEGV, see 4355769. +++ +++int os::sleep(Thread* thread, jlong millis, bool interruptible) { +++ assert(thread == Thread::current(), "thread consistency check"); +++ +++ ParkEvent * const slp = thread->_SleepEvent ; +++ slp->reset() ; +++ OrderAccess::fence() ; +++ +++ if (interruptible) { +++ jlong prevtime = javaTimeNanos(); +++ +++ for (;;) { +++ if (os::is_interrupted(thread, true)) { +++ return OS_INTRPT; +++ } +++ +++ jlong newtime = javaTimeNanos(); +++ +++ if (newtime - prevtime < 0) { +++ // time moving backwards, should only happen if no monotonic clock +++ // not a guarantee() because JVM should not abort on kernel/glibc bugs +++ assert(!Linux::supports_monotonic_clock(), "time moving backwards"); +++ } else { +++ millis -= (newtime - prevtime) / NANOSECS_PER_MILLISEC; +++ } +++ +++ if(millis <= 0) { +++ return OS_OK; +++ } +++ +++ prevtime = newtime; +++ +++ { +++ assert(thread->is_Java_thread(), "sanity check"); +++ JavaThread *jt = (JavaThread *) thread; +++ ThreadBlockInVM tbivm(jt); +++ OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */); +++ +++ jt->set_suspend_equivalent(); +++ // cleared by handle_special_suspend_equivalent_condition() or +++ // java_suspend_self() via check_and_wait_while_suspended() +++ +++ slp->park(millis); +++ +++ // were we externally suspended while we were waiting? +++ jt->check_and_wait_while_suspended(); +++ } +++ } +++ } else { +++ OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); +++ jlong prevtime = javaTimeNanos(); +++ +++ for (;;) { +++ // It'd be nice to avoid the back-to-back javaTimeNanos() calls on +++ // the 1st iteration ... +++ jlong newtime = javaTimeNanos(); +++ +++ if (newtime - prevtime < 0) { +++ // time moving backwards, should only happen if no monotonic clock +++ // not a guarantee() because JVM should not abort on kernel/glibc bugs +++ assert(!Linux::supports_monotonic_clock(), "time moving backwards"); +++ } else { +++ millis -= (newtime - prevtime) / NANOSECS_PER_MILLISEC; +++ } +++ +++ if(millis <= 0) break ; +++ +++ prevtime = newtime; +++ slp->park(millis); +++ } +++ return OS_OK ; +++ } +++} +++ +++int os::naked_sleep() { +++ // %% make the sleep time an integer flag. for now use 1 millisec. +++ return os::sleep(Thread::current(), 1, false); +++} +++ +++// Sleep forever; naked call to OS-specific sleep; use with CAUTION +++void os::infinite_sleep() { +++ while (true) { // sleep forever ... +++ ::sleep(100); // ... 100 seconds at a time +++ } +++} +++ +++// Used to convert frequent JVM_Yield() to nops +++bool os::dont_yield() { +++ return DontYieldALot; +++} +++ +++void os::yield() { +++ sched_yield(); +++} +++ +++os::YieldResult os::NakedYield() { sched_yield(); return os::YIELD_UNKNOWN ;} +++ +++void os::yield_all(int attempts) { +++ // Yields to all threads, including threads with lower priorities +++ // Threads on Linux are all with same priority. The Solaris style +++ // os::yield_all() with nanosleep(1ms) is not necessary. +++ sched_yield(); +++} +++ +++// Called from the tight loops to possibly influence time-sharing heuristics +++void os::loop_breaker(int attempts) { +++ os::yield_all(attempts); +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// thread priority support +++ +++// Note: Normal Linux applications are run with SCHED_OTHER policy. SCHED_OTHER +++// only supports dynamic priority, static priority must be zero. For real-time +++// applications, Linux supports SCHED_RR which allows static priority (1-99). +++// However, for large multi-threaded applications, SCHED_RR is not only slower +++// than SCHED_OTHER, but also very unstable (my volano tests hang hard 4 out +++// of 5 runs - Sep 2005). +++// +++// The following code actually changes the niceness of kernel-thread/LWP. It +++// has an assumption that setpriority() only modifies one kernel-thread/LWP, +++// not the entire user process, and user level threads are 1:1 mapped to kernel +++// threads. It has always been the case, but could change in the future. For +++// this reason, the code should not be used as default (ThreadPriorityPolicy=0). +++// It is only used when ThreadPriorityPolicy=1 and requires root privilege. +++ +++int os::java_to_os_priority[CriticalPriority + 1] = { +++ 19, // 0 Entry should never be used +++ +++ 4, // 1 MinPriority +++ 3, // 2 +++ 2, // 3 +++ +++ 1, // 4 +++ 0, // 5 NormPriority +++ -1, // 6 +++ +++ -2, // 7 +++ -3, // 8 +++ -4, // 9 NearMaxPriority +++ +++ -5, // 10 MaxPriority +++ +++ -5 // 11 CriticalPriority +++}; +++ +++static int prio_init() { +++ if (ThreadPriorityPolicy == 1) { +++ // Only root can raise thread priority. Don't allow ThreadPriorityPolicy=1 +++ // if effective uid is not root. Perhaps, a more elegant way of doing +++ // this is to test CAP_SYS_NICE capability, but that will require libcap.so +++ if (geteuid() != 0) { +++ if (!FLAG_IS_DEFAULT(ThreadPriorityPolicy)) { +++ warning("-XX:ThreadPriorityPolicy requires root privilege on Linux"); +++ } +++ ThreadPriorityPolicy = 0; +++ } +++ } +++ if (UseCriticalJavaThreadPriority) { +++ os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority]; +++ } +++ return 0; +++} +++ +++OSReturn os::set_native_priority(Thread* thread, int newpri) { +++ if ( !UseThreadPriorities || ThreadPriorityPolicy == 0 ) return OS_OK; +++ +++ int ret = setpriority(PRIO_PROCESS, thread->osthread()->thread_id(), newpri); +++ return (ret == 0) ? OS_OK : OS_ERR; +++} +++ +++OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) { +++ if ( !UseThreadPriorities || ThreadPriorityPolicy == 0 ) { +++ *priority_ptr = java_to_os_priority[NormPriority]; +++ return OS_OK; +++ } +++ +++ errno = 0; +++ *priority_ptr = getpriority(PRIO_PROCESS, thread->osthread()->thread_id()); +++ return (*priority_ptr != -1 || errno == 0 ? OS_OK : OS_ERR); +++} +++ +++// Hint to the underlying OS that a task switch would not be good. +++// Void return because it's a hint and can fail. +++void os::hint_no_preempt() {} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// suspend/resume support +++ +++// the low-level signal-based suspend/resume support is a remnant from the +++// old VM-suspension that used to be for java-suspension, safepoints etc, +++// within hotspot. Now there is a single use-case for this: +++// - calling get_thread_pc() on the VMThread by the flat-profiler task +++// that runs in the watcher thread. +++// The remaining code is greatly simplified from the more general suspension +++// code that used to be used. +++// +++// The protocol is quite simple: +++// - suspend: +++// - sends a signal to the target thread +++// - polls the suspend state of the osthread using a yield loop +++// - target thread signal handler (SR_handler) sets suspend state +++// and blocks in sigsuspend until continued +++// - resume: +++// - sets target osthread state to continue +++// - sends signal to end the sigsuspend loop in the SR_handler +++// +++// Note that the SR_lock plays no role in this suspend/resume protocol. +++// +++ +++static void resume_clear_context(OSThread *osthread) { +++ osthread->set_ucontext(NULL); +++ osthread->set_siginfo(NULL); +++} +++ +++static void suspend_save_context(OSThread *osthread, siginfo_t* siginfo, ucontext_t* context) { +++ osthread->set_ucontext(context); +++ osthread->set_siginfo(siginfo); +++} +++ +++// +++// Handler function invoked when a thread's execution is suspended or +++// resumed. We have to be careful that only async-safe functions are +++// called here (Note: most pthread functions are not async safe and +++// should be avoided.) +++// +++// Note: sigwait() is a more natural fit than sigsuspend() from an +++// interface point of view, but sigwait() prevents the signal hander +++// from being run. libpthread would get very confused by not having +++// its signal handlers run and prevents sigwait()'s use with the +++// mutex granting granting signal. +++// +++// Currently only ever called on the VMThread and JavaThreads (PC sampling) +++// +++static void SR_handler(int sig, siginfo_t* siginfo, ucontext_t* context) { +++ // Save and restore errno to avoid confusing native code with EINTR +++ // after sigsuspend. +++ int old_errno = errno; +++ +++ Thread* thread = Thread::current(); +++ OSThread* osthread = thread->osthread(); +++ assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread"); +++ +++ os::SuspendResume::State current = osthread->sr.state(); +++ if (current == os::SuspendResume::SR_SUSPEND_REQUEST) { +++ suspend_save_context(osthread, siginfo, context); +++ +++ // attempt to switch the state, we assume we had a SUSPEND_REQUEST +++ os::SuspendResume::State state = osthread->sr.suspended(); +++ if (state == os::SuspendResume::SR_SUSPENDED) { +++ sigset_t suspend_set; // signals for sigsuspend() +++ +++ // get current set of blocked signals and unblock resume signal +++ pthread_sigmask(SIG_BLOCK, NULL, &suspend_set); +++ sigdelset(&suspend_set, SR_signum); +++ +++ sr_semaphore.signal(); +++ // wait here until we are resumed +++ while (1) { +++ sigsuspend(&suspend_set); +++ +++ os::SuspendResume::State result = osthread->sr.running(); +++ if (result == os::SuspendResume::SR_RUNNING) { +++ sr_semaphore.signal(); +++ break; +++ } +++ } +++ +++ } else if (state == os::SuspendResume::SR_RUNNING) { +++ // request was cancelled, continue +++ } else { +++ ShouldNotReachHere(); +++ } +++ +++ resume_clear_context(osthread); +++ } else if (current == os::SuspendResume::SR_RUNNING) { +++ // request was cancelled, continue +++ } else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) { +++ // ignore +++ } else { +++ // ignore +++ } +++ +++ errno = old_errno; +++} +++ +++ +++static int SR_initialize() { +++ struct sigaction act; +++ char *s; +++ /* Get signal number to use for suspend/resume */ +++ if ((s = ::getenv("_JAVA_SR_SIGNUM")) != 0) { +++ int sig = ::strtol(s, 0, 10); +++ if (sig > 0 || sig < _NSIG) { +++ SR_signum = sig; +++ } +++ } +++ +++ assert(SR_signum > SIGSEGV && SR_signum > SIGBUS, +++ "SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769"); +++ +++ sigemptyset(&SR_sigset); +++ sigaddset(&SR_sigset, SR_signum); +++ +++ /* Set up signal handler for suspend/resume */ +++ act.sa_flags = SA_RESTART|SA_SIGINFO; +++ act.sa_handler = (void (*)(int)) SR_handler; +++ +++ // SR_signum is blocked by default. +++ // 4528190 - We also need to block pthread restart signal (32 on all +++ // supported Linux platforms). Note that LinuxThreads need to block +++ // this signal for all threads to work properly. So we don't have +++ // to use hard-coded signal number when setting up the mask. +++ pthread_sigmask(SIG_BLOCK, NULL, &act.sa_mask); +++ +++ if (sigaction(SR_signum, &act, 0) == -1) { +++ return -1; +++ } +++ +++ // Save signal flag +++ os::Linux::set_our_sigflags(SR_signum, act.sa_flags); +++ return 0; +++} +++ +++static int SR_finalize() { +++ return 0; +++} +++ +++static int sr_notify(OSThread* osthread) { +++ int status = pthread_kill(osthread->pthread_id(), SR_signum); +++ assert_status(status == 0, status, "pthread_kill"); +++ return status; +++} +++ +++// "Randomly" selected value for how long we want to spin +++// before bailing out on suspending a thread, also how often +++// we send a signal to a thread we want to resume +++static const int RANDOMLY_LARGE_INTEGER = 1000000; +++static const int RANDOMLY_LARGE_INTEGER2 = 100; +++ +++// returns true on success and false on error - really an error is fatal +++// but this seems the normal response to library errors +++static bool do_suspend(OSThread* osthread) { +++ assert(osthread->sr.is_running(), "thread should be running"); +++ assert(!sr_semaphore.trywait(), "semaphore has invalid state"); +++ +++ // mark as suspended and send signal +++ if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) { +++ // failed to switch, state wasn't running? +++ ShouldNotReachHere(); +++ return false; +++ } +++ +++ if (sr_notify(osthread) != 0) { +++ ShouldNotReachHere(); +++ } +++ +++ // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED +++ while (true) { +++ if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { +++ break; +++ } else { +++ // timeout +++ os::SuspendResume::State cancelled = osthread->sr.cancel_suspend(); +++ if (cancelled == os::SuspendResume::SR_RUNNING) { +++ return false; +++ } else if (cancelled == os::SuspendResume::SR_SUSPENDED) { +++ // make sure that we consume the signal on the semaphore as well +++ sr_semaphore.wait(); +++ break; +++ } else { +++ ShouldNotReachHere(); +++ return false; +++ } +++ } +++ } +++ +++ guarantee(osthread->sr.is_suspended(), "Must be suspended"); +++ return true; +++} +++ +++static void do_resume(OSThread* osthread) { +++ assert(osthread->sr.is_suspended(), "thread should be suspended"); +++ assert(!sr_semaphore.trywait(), "invalid semaphore state"); +++ +++ if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) { +++ // failed to switch to WAKEUP_REQUEST +++ ShouldNotReachHere(); +++ return; +++ } +++ +++ while (true) { +++ if (sr_notify(osthread) == 0) { +++ if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) { +++ if (osthread->sr.is_running()) { +++ return; +++ } +++ } +++ } else { +++ ShouldNotReachHere(); +++ } +++ } +++ +++ guarantee(osthread->sr.is_running(), "Must be running!"); +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// interrupt support +++ +++void os::interrupt(Thread* thread) { +++ assert(Thread::current() == thread || Threads_lock->owned_by_self(), +++ "possibility of dangling Thread pointer"); +++ +++ OSThread* osthread = thread->osthread(); +++ +++ if (!osthread->interrupted()) { +++ osthread->set_interrupted(true); +++ // More than one thread can get here with the same value of osthread, +++ // resulting in multiple notifications. We do, however, want the store +++ // to interrupted() to be visible to other threads before we execute unpark(). +++ OrderAccess::fence(); +++ ParkEvent * const slp = thread->_SleepEvent ; +++ if (slp != NULL) slp->unpark() ; +++ } +++ +++ // For JSR166. Unpark even if interrupt status already was set +++ if (thread->is_Java_thread()) +++ ((JavaThread*)thread)->parker()->unpark(); +++ +++ ParkEvent * ev = thread->_ParkEvent ; +++ if (ev != NULL) ev->unpark() ; +++ +++} +++ +++bool os::is_interrupted(Thread* thread, bool clear_interrupted) { +++ assert(Thread::current() == thread || Threads_lock->owned_by_self(), +++ "possibility of dangling Thread pointer"); +++ +++ OSThread* osthread = thread->osthread(); +++ +++ bool interrupted = osthread->interrupted(); +++ +++ if (interrupted && clear_interrupted) { +++ osthread->set_interrupted(false); +++ // consider thread->_SleepEvent->reset() ... optional optimization +++ } +++ +++ return interrupted; +++} +++ +++/////////////////////////////////////////////////////////////////////////////////// +++// signal handling (except suspend/resume) +++ +++// This routine may be used by user applications as a "hook" to catch signals. +++// The user-defined signal handler must pass unrecognized signals to this +++// routine, and if it returns true (non-zero), then the signal handler must +++// return immediately. If the flag "abort_if_unrecognized" is true, then this +++// routine will never retun false (zero), but instead will execute a VM panic +++// routine kill the process. +++// +++// If this routine returns false, it is OK to call it again. This allows +++// the user-defined signal handler to perform checks either before or after +++// the VM performs its own checks. Naturally, the user code would be making +++// a serious error if it tried to handle an exception (such as a null check +++// or breakpoint) that the VM was generating for its own correct operation. +++// +++// This routine may recognize any of the following kinds of signals: +++// SIGBUS, SIGSEGV, SIGILL, SIGFPE, SIGQUIT, SIGPIPE, SIGXFSZ, SIGUSR1. +++// It should be consulted by handlers for any of those signals. +++// +++// The caller of this routine must pass in the three arguments supplied +++// to the function referred to in the "sa_sigaction" (not the "sa_handler") +++// field of the structure passed to sigaction(). This routine assumes that +++// the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. +++// +++// Note that the VM will print warnings if it detects conflicting signal +++// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". +++// +++extern "C" JNIEXPORT int +++JVM_handle_linux_signal(int signo, siginfo_t* siginfo, +++ void* ucontext, int abort_if_unrecognized); +++ +++void signalHandler(int sig, siginfo_t* info, void* uc) { +++ assert(info != NULL && uc != NULL, "it must be old kernel"); +++ JVM_handle_linux_signal(sig, info, uc, true); +++} +++ +++ +++// This boolean allows users to forward their own non-matching signals +++// to JVM_handle_linux_signal, harmlessly. +++bool os::Linux::signal_handlers_are_installed = false; +++ +++// For signal-chaining +++struct sigaction os::Linux::sigact[MAXSIGNUM]; +++unsigned int os::Linux::sigs = 0; +++bool os::Linux::libjsig_is_loaded = false; +++typedef struct sigaction *(*get_signal_t)(int); +++get_signal_t os::Linux::get_signal_action = NULL; +++ +++struct sigaction* os::Linux::get_chained_signal_action(int sig) { +++ struct sigaction *actp = NULL; +++ +++ if (libjsig_is_loaded) { +++ // Retrieve the old signal handler from libjsig +++ actp = (*get_signal_action)(sig); +++ } +++ if (actp == NULL) { +++ // Retrieve the preinstalled signal handler from jvm +++ actp = get_preinstalled_handler(sig); +++ } +++ +++ return actp; +++} +++ +++static bool call_chained_handler(struct sigaction *actp, int sig, +++ siginfo_t *siginfo, void *context) { +++ // Call the old signal handler +++ if (actp->sa_handler == SIG_DFL) { +++ // It's more reasonable to let jvm treat it as an unexpected exception +++ // instead of taking the default action. +++ return false; +++ } else if (actp->sa_handler != SIG_IGN) { +++ if ((actp->sa_flags & SA_NODEFER) == 0) { +++ // automaticlly block the signal +++ sigaddset(&(actp->sa_mask), sig); +++ } +++ +++ sa_handler_t hand; +++ sa_sigaction_t sa; +++ bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; +++ // retrieve the chained handler +++ if (siginfo_flag_set) { +++ sa = actp->sa_sigaction; +++ } else { +++ hand = actp->sa_handler; +++ } +++ +++ if ((actp->sa_flags & SA_RESETHAND) != 0) { +++ actp->sa_handler = SIG_DFL; +++ } +++ +++ // try to honor the signal mask +++ sigset_t oset; +++ pthread_sigmask(SIG_SETMASK, &(actp->sa_mask), &oset); +++ +++ // call into the chained handler +++ if (siginfo_flag_set) { +++ (*sa)(sig, siginfo, context); +++ } else { +++ (*hand)(sig); +++ } +++ +++ // restore the signal mask +++ pthread_sigmask(SIG_SETMASK, &oset, 0); +++ } +++ // Tell jvm's signal handler the signal is taken care of. +++ return true; +++} +++ +++bool os::Linux::chained_handler(int sig, siginfo_t* siginfo, void* context) { +++ bool chained = false; +++ // signal-chaining +++ if (UseSignalChaining) { +++ struct sigaction *actp = get_chained_signal_action(sig); +++ if (actp != NULL) { +++ chained = call_chained_handler(actp, sig, siginfo, context); +++ } +++ } +++ return chained; +++} +++ +++struct sigaction* os::Linux::get_preinstalled_handler(int sig) { +++ if ((( (unsigned int)1 << sig ) & sigs) != 0) { +++ return &sigact[sig]; +++ } +++ return NULL; +++} +++ +++void os::Linux::save_preinstalled_handler(int sig, struct sigaction& oldAct) { +++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range"); +++ sigact[sig] = oldAct; +++ sigs |= (unsigned int)1 << sig; +++} +++ +++// for diagnostic +++int os::Linux::sigflags[MAXSIGNUM]; +++ +++int os::Linux::get_our_sigflags(int sig) { +++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range"); +++ return sigflags[sig]; +++} +++ +++void os::Linux::set_our_sigflags(int sig, int flags) { +++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range"); +++ sigflags[sig] = flags; +++} +++ +++void os::Linux::set_signal_handler(int sig, bool set_installed) { +++ // Check for overwrite. +++ struct sigaction oldAct; +++ sigaction(sig, (struct sigaction*)NULL, &oldAct); +++ +++ void* oldhand = oldAct.sa_sigaction +++ ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) +++ : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); +++ if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && +++ oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && +++ oldhand != CAST_FROM_FN_PTR(void*, (sa_sigaction_t)signalHandler)) { +++ if (AllowUserSignalHandlers || !set_installed) { +++ // Do not overwrite; user takes responsibility to forward to us. +++ return; +++ } else if (UseSignalChaining) { +++ // save the old handler in jvm +++ save_preinstalled_handler(sig, oldAct); +++ // libjsig also interposes the sigaction() call below and saves the +++ // old sigaction on it own. +++ } else { +++ fatal(err_msg("Encountered unexpected pre-existing sigaction handler " +++ "%#lx for signal %d.", (long)oldhand, sig)); +++ } +++ } +++ +++ struct sigaction sigAct; +++ sigfillset(&(sigAct.sa_mask)); +++ sigAct.sa_handler = SIG_DFL; +++ if (!set_installed) { +++ sigAct.sa_flags = SA_SIGINFO|SA_RESTART; +++ } else { +++ sigAct.sa_sigaction = signalHandler; +++ sigAct.sa_flags = SA_SIGINFO|SA_RESTART; +++ } +++ // Save flags, which are set by ours +++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range"); +++ sigflags[sig] = sigAct.sa_flags; +++ +++ int ret = sigaction(sig, &sigAct, &oldAct); +++ assert(ret == 0, "check"); +++ +++ void* oldhand2 = oldAct.sa_sigaction +++ ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) +++ : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); +++ assert(oldhand2 == oldhand, "no concurrent signal handler installation"); +++} +++ +++// install signal handlers for signals that HotSpot needs to +++// handle in order to support Java-level exception handling. +++ +++void os::Linux::install_signal_handlers() { +++ if (!signal_handlers_are_installed) { +++ signal_handlers_are_installed = true; +++ +++ // signal-chaining +++ typedef void (*signal_setting_t)(); +++ signal_setting_t begin_signal_setting = NULL; +++ signal_setting_t end_signal_setting = NULL; +++ begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, +++ dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); +++ if (begin_signal_setting != NULL) { +++ end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, +++ dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); +++ get_signal_action = CAST_TO_FN_PTR(get_signal_t, +++ dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); +++ libjsig_is_loaded = true; +++ assert(UseSignalChaining, "should enable signal-chaining"); +++ } +++ if (libjsig_is_loaded) { +++ // Tell libjsig jvm is setting signal handlers +++ (*begin_signal_setting)(); +++ } +++ +++ set_signal_handler(SIGSEGV, true); +++ set_signal_handler(SIGPIPE, true); +++ set_signal_handler(SIGBUS, true); +++ set_signal_handler(SIGILL, true); +++ set_signal_handler(SIGFPE, true); +++ set_signal_handler(SIGXFSZ, true); +++ +++ if (libjsig_is_loaded) { +++ // Tell libjsig jvm finishes setting signal handlers +++ (*end_signal_setting)(); +++ } +++ +++ // We don't activate signal checker if libjsig is in place, we trust ourselves +++ // and if UserSignalHandler is installed all bets are off. +++ // Log that signal checking is off only if -verbose:jni is specified. +++ if (CheckJNICalls) { +++ if (libjsig_is_loaded) { +++ if (PrintJNIResolving) { +++ tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); +++ } +++ check_signals = false; +++ } +++ if (AllowUserSignalHandlers) { +++ if (PrintJNIResolving) { +++ tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); +++ } +++ check_signals = false; +++ } +++ } +++ } +++} +++ +++// This is the fastest way to get thread cpu time on Linux. +++// Returns cpu time (user+sys) for any thread, not only for current. +++// POSIX compliant clocks are implemented in the kernels 2.6.16+. +++// It might work on 2.6.10+ with a special kernel/glibc patch. +++// For reference, please, see IEEE Std 1003.1-2004: +++// http://www.unix.org/single_unix_specification +++ +++jlong os::Linux::fast_thread_cpu_time(clockid_t clockid) { +++ struct timespec tp; +++ int rc = os::Linux::clock_gettime(clockid, &tp); +++ assert(rc == 0, "clock_gettime is expected to return 0 code"); +++ +++ return (tp.tv_sec * NANOSECS_PER_SEC) + tp.tv_nsec; +++} +++ +++///// +++// glibc on Linux platform uses non-documented flag +++// to indicate, that some special sort of signal +++// trampoline is used. +++// We will never set this flag, and we should +++// ignore this flag in our diagnostic +++#ifdef SIGNIFICANT_SIGNAL_MASK +++#undef SIGNIFICANT_SIGNAL_MASK +++#endif +++#define SIGNIFICANT_SIGNAL_MASK (~0x04000000) +++ +++static const char* get_signal_handler_name(address handler, +++ char* buf, int buflen) { +++ int offset; +++ bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); +++ if (found) { +++ // skip directory names +++ const char *p1, *p2; +++ p1 = buf; +++ size_t len = strlen(os::file_separator()); +++ while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; +++ jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); +++ } else { +++ jio_snprintf(buf, buflen, PTR_FORMAT, handler); +++ } +++ return buf; +++} +++ +++static void print_signal_handler(outputStream* st, int sig, +++ char* buf, size_t buflen) { +++ struct sigaction sa; +++ +++ sigaction(sig, NULL, &sa); +++ +++ // See comment for SIGNIFICANT_SIGNAL_MASK define +++ sa.sa_flags &= SIGNIFICANT_SIGNAL_MASK; +++ +++ st->print("%s: ", os::exception_name(sig, buf, buflen)); +++ +++ address handler = (sa.sa_flags & SA_SIGINFO) +++ ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) +++ : CAST_FROM_FN_PTR(address, sa.sa_handler); +++ +++ if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { +++ st->print("SIG_DFL"); +++ } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { +++ st->print("SIG_IGN"); +++ } else { +++ st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); +++ } +++ +++ st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask); +++ +++ address rh = VMError::get_resetted_sighandler(sig); +++ // May be, handler was resetted by VMError? +++ if(rh != NULL) { +++ handler = rh; +++ sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK; +++ } +++ +++ st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags); +++ +++ // Check: is it our handler? +++ if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) || +++ handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) { +++ // It is our signal handler +++ // check for flags, reset system-used one! +++ if((int)sa.sa_flags != os::Linux::get_our_sigflags(sig)) { +++ st->print( +++ ", flags was changed from " PTR32_FORMAT ", consider using jsig library", +++ os::Linux::get_our_sigflags(sig)); +++ } +++ } +++ st->cr(); +++} +++ +++ +++#define DO_SIGNAL_CHECK(sig) \ +++ if (!sigismember(&check_signal_done, sig)) \ +++ os::Linux::check_signal_handler(sig) +++ +++// This method is a periodic task to check for misbehaving JNI applications +++// under CheckJNI, we can add any periodic checks here +++ +++void os::run_periodic_checks() { +++ +++ if (check_signals == false) return; +++ +++ // SEGV and BUS if overridden could potentially prevent +++ // generation of hs*.log in the event of a crash, debugging +++ // such a case can be very challenging, so we absolutely +++ // check the following for a good measure: +++ DO_SIGNAL_CHECK(SIGSEGV); +++ DO_SIGNAL_CHECK(SIGILL); +++ DO_SIGNAL_CHECK(SIGFPE); +++ DO_SIGNAL_CHECK(SIGBUS); +++ DO_SIGNAL_CHECK(SIGPIPE); +++ DO_SIGNAL_CHECK(SIGXFSZ); +++ +++ +++ // ReduceSignalUsage allows the user to override these handlers +++ // see comments at the very top and jvm_solaris.h +++ if (!ReduceSignalUsage) { +++ DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); +++ DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); +++ DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); +++ DO_SIGNAL_CHECK(BREAK_SIGNAL); +++ } +++ +++ DO_SIGNAL_CHECK(SR_signum); +++ DO_SIGNAL_CHECK(INTERRUPT_SIGNAL); +++} +++ +++typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); +++ +++static os_sigaction_t os_sigaction = NULL; +++ +++void os::Linux::check_signal_handler(int sig) { +++ char buf[O_BUFLEN]; +++ address jvmHandler = NULL; +++ +++ +++ struct sigaction act; +++ if (os_sigaction == NULL) { +++ // only trust the default sigaction, in case it has been interposed +++ os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); +++ if (os_sigaction == NULL) return; +++ } +++ +++ os_sigaction(sig, (struct sigaction*)NULL, &act); +++ +++ +++ act.sa_flags &= SIGNIFICANT_SIGNAL_MASK; +++ +++ address thisHandler = (act.sa_flags & SA_SIGINFO) +++ ? CAST_FROM_FN_PTR(address, act.sa_sigaction) +++ : CAST_FROM_FN_PTR(address, act.sa_handler) ; +++ +++ +++ switch(sig) { +++ case SIGSEGV: +++ case SIGBUS: +++ case SIGFPE: +++ case SIGPIPE: +++ case SIGILL: +++ case SIGXFSZ: +++ jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler); +++ break; +++ +++ case SHUTDOWN1_SIGNAL: +++ case SHUTDOWN2_SIGNAL: +++ case SHUTDOWN3_SIGNAL: +++ case BREAK_SIGNAL: +++ jvmHandler = (address)user_handler(); +++ break; +++ +++ case INTERRUPT_SIGNAL: +++ jvmHandler = CAST_FROM_FN_PTR(address, SIG_DFL); +++ break; +++ +++ default: +++ if (sig == SR_signum) { +++ jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler); +++ } else { +++ return; +++ } +++ break; +++ } +++ +++ if (thisHandler != jvmHandler) { +++ tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); +++ tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); +++ tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); +++ // No need to check this sig any longer +++ sigaddset(&check_signal_done, sig); +++ } else if(os::Linux::get_our_sigflags(sig) != 0 && (int)act.sa_flags != os::Linux::get_our_sigflags(sig)) { +++ tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); +++ tty->print("expected:" PTR32_FORMAT, os::Linux::get_our_sigflags(sig)); +++ tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags); +++ // No need to check this sig any longer +++ sigaddset(&check_signal_done, sig); +++ } +++ +++ // Dump all the signal +++ if (sigismember(&check_signal_done, sig)) { +++ print_signal_handlers(tty, buf, O_BUFLEN); +++ } +++} +++ +++extern void report_error(char* file_name, int line_no, char* title, char* format, ...); +++ +++extern bool signal_name(int signo, char* buf, size_t len); +++ +++const char* os::exception_name(int exception_code, char* buf, size_t size) { +++ if (0 < exception_code && exception_code <= SIGRTMAX) { +++ // signal +++ if (!signal_name(exception_code, buf, size)) { +++ jio_snprintf(buf, size, "SIG%d", exception_code); +++ } +++ return buf; +++ } else { +++ return NULL; +++ } +++} +++ +++// this is called _before_ the most of global arguments have been parsed +++void os::init(void) { +++ char dummy; /* used to get a guess on initial stack address */ +++// first_hrtime = gethrtime(); +++ +++ // With LinuxThreads the JavaMain thread pid (primordial thread) +++ // is different than the pid of the java launcher thread. +++ // So, on Linux, the launcher thread pid is passed to the VM +++ // via the sun.java.launcher.pid property. +++ // Use this property instead of getpid() if it was correctly passed. +++ // See bug 6351349. +++ pid_t java_launcher_pid = (pid_t) Arguments::sun_java_launcher_pid(); +++ +++ _initial_pid = (java_launcher_pid > 0) ? java_launcher_pid : getpid(); +++ +++ clock_tics_per_sec = sysconf(_SC_CLK_TCK); +++ +++ init_random(1234567); +++ +++ ThreadCritical::initialize(); +++ +++ Linux::set_page_size(sysconf(_SC_PAGESIZE)); +++ if (Linux::page_size() == -1) { +++ fatal(err_msg("os_linux.cpp: os::init: sysconf failed (%s)", +++ strerror(errno))); +++ } +++ init_page_sizes((size_t) Linux::page_size()); +++ +++ Linux::initialize_system_info(); +++ +++ // main_thread points to the aboriginal thread +++ Linux::_main_thread = pthread_self(); +++ +++ Linux::clock_init(); +++ initial_time_count = os::elapsed_counter(); +++ pthread_mutex_init(&dl_mutex, NULL); +++ +++ // If the pagesize of the VM is greater than 8K determine the appropriate +++ // number of initial guard pages. The user can change this with the +++ // command line arguments, if needed. +++ if (vm_page_size() > (int)Linux::vm_default_page_size()) { +++ StackYellowPages = 1; +++ StackRedPages = 1; +++ StackShadowPages = round_to((StackShadowPages*Linux::vm_default_page_size()), vm_page_size()) / vm_page_size(); +++ } +++} +++ +++// To install functions for atexit system call +++extern "C" { +++ static void perfMemory_exit_helper() { +++ perfMemory_exit(); +++ } +++} +++ +++// this is called _after_ the global arguments have been parsed +++jint os::init_2(void) +++{ +++ Linux::fast_thread_clock_init(); +++ +++ // Allocate a single page and mark it as readable for safepoint polling +++ address polling_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); +++ guarantee( polling_page != MAP_FAILED, "os::init_2: failed to allocate polling page" ); +++ +++ os::set_polling_page( polling_page ); +++ +++#ifndef PRODUCT +++ if(Verbose && PrintMiscellaneous) +++ tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); +++#endif +++ +++ if (!UseMembar) { +++ address mem_serialize_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); +++ guarantee( mem_serialize_page != MAP_FAILED, "mmap Failed for memory serialize page"); +++ os::set_memory_serialize_page( mem_serialize_page ); +++ +++#ifndef PRODUCT +++ if(Verbose && PrintMiscellaneous) +++ tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); +++#endif +++ } +++ +++ os::large_page_init(); +++ +++ // initialize suspend/resume support - must do this before signal_sets_init() +++ if (SR_initialize() != 0) { +++ perror("SR_initialize failed"); +++ return JNI_ERR; +++ } +++ +++ Linux::signal_sets_init(); +++ Linux::install_signal_handlers(); +++ +++ // Check minimum allowable stack size for thread creation and to initialize +++ // the java system classes, including StackOverflowError - depends on page +++ // size. Add a page for compiler2 recursion in main thread. +++ // Add in 2*BytesPerWord times page size to account for VM stack during +++ // class initialization depending on 32 or 64 bit VM. +++ os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed, +++ (size_t)(StackYellowPages+StackRedPages+StackShadowPages) * Linux::page_size() + +++ (2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::vm_default_page_size()); +++ +++ size_t threadStackSizeInBytes = ThreadStackSize * K; +++ if (threadStackSizeInBytes != 0 && +++ threadStackSizeInBytes < os::Linux::min_stack_allowed) { +++ tty->print_cr("\nThe stack size specified is too small, " +++ "Specify at least %dk", +++ os::Linux::min_stack_allowed/ K); +++ return JNI_ERR; +++ } +++ +++ // Make the stack size a multiple of the page size so that +++ // the yellow/red zones can be guarded. +++ JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, +++ vm_page_size())); +++ +++ Linux::capture_initial_stack(JavaThread::stack_size_at_create()); +++ +++ Linux::libpthread_init(); +++ if (PrintMiscellaneous && (Verbose || WizardMode)) { +++ tty->print_cr("[HotSpot is running with %s, %s(%s)]\n", +++ Linux::glibc_version(), Linux::libpthread_version(), +++ Linux::is_floating_stack() ? "floating stack" : "fixed stack"); +++ } +++ +++ if (UseNUMA) { +++ if (!Linux::libnuma_init()) { +++ UseNUMA = false; +++ } else { +++ if ((Linux::numa_max_node() < 1)) { +++ // There's only one node(they start from 0), disable NUMA. +++ UseNUMA = false; +++ } +++ } +++ // With SHM large pages we cannot uncommit a page, so there's not way +++ // we can make the adaptive lgrp chunk resizing work. If the user specified +++ // both UseNUMA and UseLargePages (or UseSHM) on the command line - warn and +++ // disable adaptive resizing. +++ if (UseNUMA && UseLargePages && UseSHM) { +++ if (!FLAG_IS_DEFAULT(UseNUMA)) { +++ if (FLAG_IS_DEFAULT(UseLargePages) && FLAG_IS_DEFAULT(UseSHM)) { +++ UseLargePages = false; +++ } else { +++ warning("UseNUMA is not fully compatible with SHM large pages, disabling adaptive resizing"); +++ UseAdaptiveSizePolicy = false; +++ UseAdaptiveNUMAChunkSizing = false; +++ } +++ } else { +++ UseNUMA = false; +++ } +++ } +++ if (!UseNUMA && ForceNUMA) { +++ UseNUMA = true; +++ } +++ } +++ +++ if (MaxFDLimit) { +++ // set the number of file descriptors to max. print out error +++ // if getrlimit/setrlimit fails but continue regardless. +++ struct rlimit nbr_files; +++ int status = getrlimit(RLIMIT_NOFILE, &nbr_files); +++ if (status != 0) { +++ if (PrintMiscellaneous && (Verbose || WizardMode)) +++ perror("os::init_2 getrlimit failed"); +++ } else { +++ nbr_files.rlim_cur = nbr_files.rlim_max; +++ status = setrlimit(RLIMIT_NOFILE, &nbr_files); +++ if (status != 0) { +++ if (PrintMiscellaneous && (Verbose || WizardMode)) +++ perror("os::init_2 setrlimit failed"); +++ } +++ } +++ } +++ +++ // Initialize lock used to serialize thread creation (see os::create_thread) +++ Linux::set_createThread_lock(new Mutex(Mutex::leaf, "createThread_lock", false)); +++ +++ // at-exit methods are called in the reverse order of their registration. +++ // atexit functions are called on return from main or as a result of a +++ // call to exit(3C). There can be only 32 of these functions registered +++ // and atexit() does not set errno. +++ +++ if (PerfAllowAtExitRegistration) { +++ // only register atexit functions if PerfAllowAtExitRegistration is set. +++ // atexit functions can be delayed until process exit time, which +++ // can be problematic for embedded VM situations. Embedded VMs should +++ // call DestroyJavaVM() to assure that VM resources are released. +++ +++ // note: perfMemory_exit_helper atexit function may be removed in +++ // the future if the appropriate cleanup code can be added to the +++ // VM_Exit VMOperation's doit method. +++ if (atexit(perfMemory_exit_helper) != 0) { +++ warning("os::init2 atexit(perfMemory_exit_helper) failed"); +++ } +++ } +++ +++ // initialize thread priority policy +++ prio_init(); +++ +++ return JNI_OK; +++} +++ +++// this is called at the end of vm_initialization +++void os::init_3(void) +++{ +++#ifdef JAVASE_EMBEDDED +++ // Start the MemNotifyThread +++ if (LowMemoryProtection) { +++ MemNotifyThread::start(); +++ } +++ return; +++#endif +++} +++ +++// Mark the polling page as unreadable +++void os::make_polling_page_unreadable(void) { +++ if( !guard_memory((char*)_polling_page, Linux::page_size()) ) +++ fatal("Could not disable polling page"); +++}; +++ +++// Mark the polling page as readable +++void os::make_polling_page_readable(void) { +++ if( !linux_mprotect((char *)_polling_page, Linux::page_size(), PROT_READ)) { +++ fatal("Could not enable polling page"); +++ } +++}; +++ +++int os::active_processor_count() { +++ // Linux doesn't yet have a (official) notion of processor sets, +++ // so just return the number of online processors. +++ int online_cpus = ::sysconf(_SC_NPROCESSORS_ONLN); +++ assert(online_cpus > 0 && online_cpus <= processor_count(), "sanity check"); +++ return online_cpus; +++} +++ +++void os::set_native_thread_name(const char *name) { +++ // Not yet implemented. +++ return; +++} +++ +++bool os::distribute_processes(uint length, uint* distribution) { +++ // Not yet implemented. +++ return false; +++} +++ +++bool os::bind_to_processor(uint processor_id) { +++ // Not yet implemented. +++ return false; +++} +++ +++/// +++ +++void os::SuspendedThreadTask::internal_do_task() { +++ if (do_suspend(_thread->osthread())) { +++ SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext()); +++ do_task(context); +++ do_resume(_thread->osthread()); +++ } +++} +++ +++class PcFetcher : public os::SuspendedThreadTask { +++public: +++ PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {} +++ ExtendedPC result(); +++protected: +++ void do_task(const os::SuspendedThreadTaskContext& context); +++private: +++ ExtendedPC _epc; +++}; +++ +++ExtendedPC PcFetcher::result() { +++ guarantee(is_done(), "task is not done yet."); +++ return _epc; +++} +++ +++void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) { +++ Thread* thread = context.thread(); +++ OSThread* osthread = thread->osthread(); +++ if (osthread->ucontext() != NULL) { +++ _epc = os::Linux::ucontext_get_pc((ucontext_t *) context.ucontext()); +++ } else { +++ // NULL context is unexpected, double-check this is the VMThread +++ guarantee(thread->is_VM_thread(), "can only be called for VMThread"); +++ } +++} +++ +++// Suspends the target using the signal mechanism and then grabs the PC before +++// resuming the target. Used by the flat-profiler only +++ExtendedPC os::get_thread_pc(Thread* thread) { +++ // Make sure that it is called by the watcher for the VMThread +++ assert(Thread::current()->is_Watcher_thread(), "Must be watcher"); +++ assert(thread->is_VM_thread(), "Can only be called for VMThread"); +++ +++ PcFetcher fetcher(thread); +++ fetcher.run(); +++ return fetcher.result(); +++} +++ +++int os::Linux::safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime) +++{ +++ if (is_NPTL()) { +++ return pthread_cond_timedwait(_cond, _mutex, _abstime); +++ } else { +++#ifndef IA64 +++ // 6292965: LinuxThreads pthread_cond_timedwait() resets FPU control +++ // word back to default 64bit precision if condvar is signaled. Java +++ // wants 53bit precision. Save and restore current value. +++ int fpu = get_fpu_control_word(); +++#endif // IA64 +++ int status = pthread_cond_timedwait(_cond, _mutex, _abstime); +++#ifndef IA64 +++ set_fpu_control_word(fpu); +++#endif // IA64 +++ return status; +++ } +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// debug support +++ +++static address same_page(address x, address y) { +++ int page_bits = -os::vm_page_size(); +++ if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) +++ return x; +++ else if (x > y) +++ return (address)(intptr_t(y) | ~page_bits) + 1; +++ else +++ return (address)(intptr_t(y) & page_bits); +++} +++ +++bool os::find(address addr, outputStream* st) { +++ Dl_info dlinfo; +++ memset(&dlinfo, 0, sizeof(dlinfo)); +++ if (dladdr(addr, &dlinfo) != 0) { +++ st->print(PTR_FORMAT ": ", addr); +++ if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) { +++ st->print("%s+%#x", dlinfo.dli_sname, +++ addr - (intptr_t)dlinfo.dli_saddr); +++ } else if (dlinfo.dli_fbase != NULL) { +++ st->print("<offset %#x>", addr - (intptr_t)dlinfo.dli_fbase); +++ } else { +++ st->print("<absolute address>"); +++ } +++ if (dlinfo.dli_fname != NULL) { +++ st->print(" in %s", dlinfo.dli_fname); +++ } +++ if (dlinfo.dli_fbase != NULL) { +++ st->print(" at " PTR_FORMAT, dlinfo.dli_fbase); +++ } +++ st->cr(); +++ +++ if (Verbose) { +++ // decode some bytes around the PC +++ address begin = same_page(addr-40, addr); +++ address end = same_page(addr+40, addr); +++ address lowest = (address) dlinfo.dli_sname; +++ if (!lowest) lowest = (address) dlinfo.dli_fbase; +++ if (begin < lowest) begin = lowest; +++ Dl_info dlinfo2; +++ if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr +++ && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) +++ end = (address) dlinfo2.dli_saddr; +++ Disassembler::decode(begin, end, st); +++ } +++ return true; +++ } +++ return false; +++} +++ +++//////////////////////////////////////////////////////////////////////////////// +++// misc +++ +++// This does not do anything on Linux. This is basically a hook for being +++// able to use structured exception handling (thread-local exception filters) +++// on, e.g., Win32. +++void +++os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, +++ JavaCallArguments* args, Thread* thread) { +++ f(value, method, args, thread); +++} +++ +++void os::print_statistics() { +++} +++ +++int os::message_box(const char* title, const char* message) { +++ int i; +++ fdStream err(defaultStream::error_fd()); +++ for (i = 0; i < 78; i++) err.print_raw("="); +++ err.cr(); +++ err.print_raw_cr(title); +++ for (i = 0; i < 78; i++) err.print_raw("-"); +++ err.cr(); +++ err.print_raw_cr(message); +++ for (i = 0; i < 78; i++) err.print_raw("="); +++ err.cr(); +++ +++ char buf[16]; +++ // Prevent process from exiting upon "read error" without consuming all CPU +++ while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } +++ +++ return buf[0] == 'y' || buf[0] == 'Y'; +++} +++ +++int os::stat(const char *path, struct stat *sbuf) { +++ char pathbuf[MAX_PATH]; +++ if (strlen(path) > MAX_PATH - 1) { +++ errno = ENAMETOOLONG; +++ return -1; +++ } +++ os::native_path(strcpy(pathbuf, path)); +++ return ::stat(pathbuf, sbuf); +++} +++ +++bool os::check_heap(bool force) { +++ return true; +++} +++ +++int local_vsnprintf(char* buf, size_t count, const char* format, va_list args) { +++ return ::vsnprintf(buf, count, format, args); +++} +++ +++// Is a (classpath) directory empty? +++bool os::dir_is_empty(const char* path) { +++ DIR *dir = NULL; +++ struct dirent *ptr; +++ +++ dir = opendir(path); +++ if (dir == NULL) return true; +++ +++ /* Scan the directory */ +++ bool result = true; +++ char buf[sizeof(struct dirent) + MAX_PATH]; +++ while (result && (ptr = ::readdir(dir)) != NULL) { +++ if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { +++ result = false; +++ } +++ } +++ closedir(dir); +++ return result; +++} +++ +++// This code originates from JDK's sysOpen and open64_w +++// from src/solaris/hpi/src/system_md.c +++ +++#ifndef O_DELETE +++#define O_DELETE 0x10000 +++#endif +++ +++// Open a file. Unlink the file immediately after open returns +++// if the specified oflag has the O_DELETE flag set. +++// O_DELETE is used only in j2se/src/share/native/java/util/zip/ZipFile.c +++ +++int os::open(const char *path, int oflag, int mode) { +++ +++ if (strlen(path) > MAX_PATH - 1) { +++ errno = ENAMETOOLONG; +++ return -1; +++ } +++ int fd; +++ int o_delete = (oflag & O_DELETE); +++ oflag = oflag & ~O_DELETE; +++ +++ fd = ::open64(path, oflag, mode); +++ if (fd == -1) return -1; +++ +++ //If the open succeeded, the file might still be a directory +++ { +++ struct stat64 buf64; +++ int ret = ::fstat64(fd, &buf64); +++ int st_mode = buf64.st_mode; +++ +++ if (ret != -1) { +++ if ((st_mode & S_IFMT) == S_IFDIR) { +++ errno = EISDIR; +++ ::close(fd); +++ return -1; +++ } +++ } else { +++ ::close(fd); +++ return -1; +++ } +++ } +++ +++ /* +++ * All file descriptors that are opened in the JVM and not +++ * specifically destined for a subprocess should have the +++ * close-on-exec flag set. If we don't set it, then careless 3rd +++ * party native code might fork and exec without closing all +++ * appropriate file descriptors (e.g. as we do in closeDescriptors in +++ * UNIXProcess.c), and this in turn might: +++ * +++ * - cause end-of-file to fail to be detected on some file +++ * descriptors, resulting in mysterious hangs, or +++ * +++ * - might cause an fopen in the subprocess to fail on a system +++ * suffering from bug 1085341. +++ * +++ * (Yes, the default setting of the close-on-exec flag is a Unix +++ * design flaw) +++ * +++ * See: +++ * 1085341: 32-bit stdio routines should support file descriptors >255 +++ * 4843136: (process) pipe file descriptor from Runtime.exec not being closed +++ * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9 +++ */ +++#ifdef FD_CLOEXEC +++ { +++ int flags = ::fcntl(fd, F_GETFD); +++ if (flags != -1) +++ ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC); +++ } +++#endif +++ +++ if (o_delete != 0) { +++ ::unlink(path); +++ } +++ return fd; +++} +++ +++ +++// create binary file, rewriting existing file if required +++int os::create_binary_file(const char* path, bool rewrite_existing) { +++ int oflags = O_WRONLY | O_CREAT; +++ if (!rewrite_existing) { +++ oflags |= O_EXCL; +++ } +++ return ::open64(path, oflags, S_IREAD | S_IWRITE); +++} +++ +++// return current position of file pointer +++jlong os::current_file_offset(int fd) { +++ return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); +++} +++ +++// move file pointer to the specified offset +++jlong os::seek_to_file_offset(int fd, jlong offset) { +++ return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); +++} +++ +++// This code originates from JDK's sysAvailable +++// from src/solaris/hpi/src/native_threads/src/sys_api_td.c +++ +++int os::available(int fd, jlong *bytes) { +++ jlong cur, end; +++ int mode; +++ struct stat64 buf64; +++ +++ if (::fstat64(fd, &buf64) >= 0) { +++ mode = buf64.st_mode; +++ if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { +++ /* +++ * XXX: is the following call interruptible? If so, this might +++ * need to go through the INTERRUPT_IO() wrapper as for other +++ * blocking, interruptible calls in this file. +++ */ +++ int n; +++ if (::ioctl(fd, FIONREAD, &n) >= 0) { +++ *bytes = n; +++ return 1; +++ } +++ } +++ } +++ if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) { +++ return 0; +++ } else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) { +++ return 0; +++ } else if (::lseek64(fd, cur, SEEK_SET) == -1) { +++ return 0; +++ } +++ *bytes = end - cur; +++ return 1; +++} +++ +++int os::socket_available(int fd, jint *pbytes) { +++ // Linux doc says EINTR not returned, unlike Solaris +++ int ret = ::ioctl(fd, FIONREAD, pbytes); +++ +++ //%% note ioctl can return 0 when successful, JVM_SocketAvailable +++ // is expected to return 0 on failure and 1 on success to the jdk. +++ return (ret < 0) ? 0 : 1; +++} +++ +++// Map a block of memory. +++char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset, +++ char *addr, size_t bytes, bool read_only, +++ bool allow_exec) { +++ int prot; +++ int flags = MAP_PRIVATE; +++ +++ if (read_only) { +++ prot = PROT_READ; +++ } else { +++ prot = PROT_READ | PROT_WRITE; +++ } +++ +++ if (allow_exec) { +++ prot |= PROT_EXEC; +++ } +++ +++ if (addr != NULL) { +++ flags |= MAP_FIXED; +++ } +++ +++ char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, +++ fd, file_offset); +++ if (mapped_address == MAP_FAILED) { +++ return NULL; +++ } +++ return mapped_address; +++} +++ +++ +++// Remap a block of memory. +++char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset, +++ char *addr, size_t bytes, bool read_only, +++ bool allow_exec) { +++ // same as map_memory() on this OS +++ return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, +++ allow_exec); +++} +++ +++ +++// Unmap a block of memory. +++bool os::pd_unmap_memory(char* addr, size_t bytes) { +++ return munmap(addr, bytes) == 0; +++} +++ +++static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time); +++ +++static clockid_t thread_cpu_clockid(Thread* thread) { +++ pthread_t tid = thread->osthread()->pthread_id(); +++ clockid_t clockid; +++ +++ // Get thread clockid +++ int rc = os::Linux::pthread_getcpuclockid(tid, &clockid); +++ assert(rc == 0, "pthread_getcpuclockid is expected to return 0 code"); +++ return clockid; +++} +++ +++// current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) +++// are used by JVM M&M and JVMTI to get user+sys or user CPU time +++// of a thread. +++// +++// current_thread_cpu_time() and thread_cpu_time(Thread*) returns +++// the fast estimate available on the platform. +++ +++jlong os::current_thread_cpu_time() { +++ if (os::Linux::supports_fast_thread_cpu_time()) { +++ return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID); +++ } else { +++ // return user + sys since the cost is the same +++ return slow_thread_cpu_time(Thread::current(), true /* user + sys */); +++ } +++} +++ +++jlong os::thread_cpu_time(Thread* thread) { +++ // consistent with what current_thread_cpu_time() returns +++ if (os::Linux::supports_fast_thread_cpu_time()) { +++ return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread)); +++ } else { +++ return slow_thread_cpu_time(thread, true /* user + sys */); +++ } +++} +++ +++jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { +++ if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) { +++ return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID); +++ } else { +++ return slow_thread_cpu_time(Thread::current(), user_sys_cpu_time); +++ } +++} +++ +++jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { +++ if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) { +++ return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread)); +++ } else { +++ return slow_thread_cpu_time(thread, user_sys_cpu_time); +++ } +++} +++ +++// +++// -1 on error. +++// +++ +++static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { +++ static bool proc_pid_cpu_avail = true; +++ static bool proc_task_unchecked = true; +++ static const char *proc_stat_path = "/proc/%d/stat"; +++ pid_t tid = thread->osthread()->thread_id(); +++ int i; +++ char *s; +++ char stat[2048]; +++ int statlen; +++ char proc_name[64]; +++ int count; +++ long sys_time, user_time; +++ char string[64]; +++ char cdummy; +++ int idummy; +++ long ldummy; +++ FILE *fp; +++ +++ // We first try accessing /proc/<pid>/cpu since this is faster to +++ // process. If this file is not present (linux kernels 2.5 and above) +++ // then we open /proc/<pid>/stat. +++ if ( proc_pid_cpu_avail ) { +++ sprintf(proc_name, "/proc/%d/cpu", tid); +++ fp = fopen(proc_name, "r"); +++ if ( fp != NULL ) { +++ count = fscanf( fp, "%s %lu %lu\n", string, &user_time, &sys_time); +++ fclose(fp); +++ if ( count != 3 ) return -1; +++ +++ if (user_sys_cpu_time) { +++ return ((jlong)sys_time + (jlong)user_time) * (1000000000 / clock_tics_per_sec); +++ } else { +++ return (jlong)user_time * (1000000000 / clock_tics_per_sec); +++ } +++ } +++ else proc_pid_cpu_avail = false; +++ } +++ +++ // The /proc/<tid>/stat aggregates per-process usage on +++ // new Linux kernels 2.6+ where NPTL is supported. +++ // The /proc/self/task/<tid>/stat still has the per-thread usage. +++ // See bug 6328462. +++ // There can be no directory /proc/self/task on kernels 2.4 with NPTL +++ // and possibly in some other cases, so we check its availability. +++ if (proc_task_unchecked && os::Linux::is_NPTL()) { +++ // This is executed only once +++ proc_task_unchecked = false; +++ fp = fopen("/proc/self/task", "r"); +++ if (fp != NULL) { +++ proc_stat_path = "/proc/self/task/%d/stat"; +++ fclose(fp); +++ } +++ } +++ +++ sprintf(proc_name, proc_stat_path, tid); +++ fp = fopen(proc_name, "r"); +++ if ( fp == NULL ) return -1; +++ statlen = fread(stat, 1, 2047, fp); +++ stat[statlen] = '\0'; +++ fclose(fp); +++ +++ // Skip pid and the command string. Note that we could be dealing with +++ // weird command names, e.g. user could decide to rename java launcher +++ // to "java 1.4.2 :)", then the stat file would look like +++ // 1234 (java 1.4.2 :)) R ... ... +++ // We don't really need to know the command string, just find the last +++ // occurrence of ")" and then start parsing from there. See bug 4726580. +++ s = strrchr(stat, ')'); +++ i = 0; +++ if (s == NULL ) return -1; +++ +++ // Skip blank chars +++ do s++; while (isspace(*s)); +++ +++ count = sscanf(s,"%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu", +++ &cdummy, &idummy, &idummy, &idummy, &idummy, &idummy, +++ &ldummy, &ldummy, &ldummy, &ldummy, &ldummy, +++ &user_time, &sys_time); +++ if ( count != 13 ) return -1; +++ if (user_sys_cpu_time) { +++ return ((jlong)sys_time + (jlong)user_time) * (1000000000 / clock_tics_per_sec); +++ } else { +++ return (jlong)user_time * (1000000000 / clock_tics_per_sec); +++ } +++} +++ +++void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { +++ info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits +++ info_ptr->may_skip_backward = false; // elapsed time not wall time +++ info_ptr->may_skip_forward = false; // elapsed time not wall time +++ info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned +++} +++ +++void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { +++ info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits +++ info_ptr->may_skip_backward = false; // elapsed time not wall time +++ info_ptr->may_skip_forward = false; // elapsed time not wall time +++ info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned +++} +++ +++bool os::is_thread_cpu_time_supported() { +++ return true; +++} +++ +++// System loadavg support. Returns -1 if load average cannot be obtained. +++// Linux doesn't yet have a (official) notion of processor sets, +++// so just return the system wide load average. +++int os::loadavg(double loadavg[], int nelem) { +++ return ::getloadavg(loadavg, nelem); +++} +++ +++void os::pause() { +++ char filename[MAX_PATH]; +++ if (PauseAtStartupFile && PauseAtStartupFile[0]) { +++ jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); +++ } else { +++ jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); +++ } +++ +++ int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); +++ if (fd != -1) { +++ struct stat buf; +++ ::close(fd); +++ while (::stat(filename, &buf) == 0) { +++ (void)::poll(NULL, 0, 100); +++ } +++ } else { +++ jio_fprintf(stderr, +++ "Could not open pause file '%s', continuing immediately.\n", filename); +++ } +++} +++ +++ +++// Refer to the comments in os_solaris.cpp park-unpark. +++// +++// Beware -- Some versions of NPTL embody a flaw where pthread_cond_timedwait() can +++// hang indefinitely. For instance NPTL 0.60 on 2.4.21-4ELsmp is vulnerable. +++// For specifics regarding the bug see GLIBC BUGID 261237 : +++// http://www.mail-archive.com/debian-glibc@lists.debian.org/msg10837.html. +++// Briefly, pthread_cond_timedwait() calls with an expiry time that's not in the future +++// will either hang or corrupt the condvar, resulting in subsequent hangs if the condvar +++// is used. (The simple C test-case provided in the GLIBC bug report manifests the +++// hang). The JVM is vulernable via sleep(), Object.wait(timo), LockSupport.parkNanos() +++// and monitorenter when we're using 1-0 locking. All those operations may result in +++// calls to pthread_cond_timedwait(). Using LD_ASSUME_KERNEL to use an older version +++// of libpthread avoids the problem, but isn't practical. +++// +++// Possible remedies: +++// +++// 1. Establish a minimum relative wait time. 50 to 100 msecs seems to work. +++// This is palliative and probabilistic, however. If the thread is preempted +++// between the call to compute_abstime() and pthread_cond_timedwait(), more +++// than the minimum period may have passed, and the abstime may be stale (in the +++// past) resultin in a hang. Using this technique reduces the odds of a hang +++// but the JVM is still vulnerable, particularly on heavily loaded systems. +++// +++// 2. Modify park-unpark to use per-thread (per ParkEvent) pipe-pairs instead +++// of the usual flag-condvar-mutex idiom. The write side of the pipe is set +++// NDELAY. unpark() reduces to write(), park() reduces to read() and park(timo) +++// reduces to poll()+read(). This works well, but consumes 2 FDs per extant +++// thread. +++// +++// 3. Embargo pthread_cond_timedwait() and implement a native "chron" thread +++// that manages timeouts. We'd emulate pthread_cond_timedwait() by enqueuing +++// a timeout request to the chron thread and then blocking via pthread_cond_wait(). +++// This also works well. In fact it avoids kernel-level scalability impediments +++// on certain platforms that don't handle lots of active pthread_cond_timedwait() +++// timers in a graceful fashion. +++// +++// 4. When the abstime value is in the past it appears that control returns +++// correctly from pthread_cond_timedwait(), but the condvar is left corrupt. +++// Subsequent timedwait/wait calls may hang indefinitely. Given that, we +++// can avoid the problem by reinitializing the condvar -- by cond_destroy() +++// followed by cond_init() -- after all calls to pthread_cond_timedwait(). +++// It may be possible to avoid reinitialization by checking the return +++// value from pthread_cond_timedwait(). In addition to reinitializing the +++// condvar we must establish the invariant that cond_signal() is only called +++// within critical sections protected by the adjunct mutex. This prevents +++// cond_signal() from "seeing" a condvar that's in the midst of being +++// reinitialized or that is corrupt. Sadly, this invariant obviates the +++// desirable signal-after-unlock optimization that avoids futile context switching. +++// +++// I'm also concerned that some versions of NTPL might allocate an auxilliary +++// structure when a condvar is used or initialized. cond_destroy() would +++// release the helper structure. Our reinitialize-after-timedwait fix +++// put excessive stress on malloc/free and locks protecting the c-heap. +++// +++// We currently use (4). See the WorkAroundNTPLTimedWaitHang flag. +++// It may be possible to refine (4) by checking the kernel and NTPL verisons +++// and only enabling the work-around for vulnerable environments. +++ +++// utility to compute the abstime argument to timedwait: +++// millis is the relative timeout time +++// abstime will be the absolute timeout time +++// TODO: replace compute_abstime() with unpackTime() +++ +++static struct timespec* compute_abstime(timespec* abstime, jlong millis) { +++ if (millis < 0) millis = 0; +++ struct timeval now; +++ int status = gettimeofday(&now, NULL); +++ assert(status == 0, "gettimeofday"); +++ jlong seconds = millis / 1000; +++ millis %= 1000; +++ if (seconds > 50000000) { // see man cond_timedwait(3T) +++ seconds = 50000000; +++ } +++ abstime->tv_sec = now.tv_sec + seconds; +++ long usec = now.tv_usec + millis * 1000; +++ if (usec >= 1000000) { +++ abstime->tv_sec += 1; +++ usec -= 1000000; +++ } +++ abstime->tv_nsec = usec * 1000; +++ return abstime; +++} +++ +++ +++// Test-and-clear _Event, always leaves _Event set to 0, returns immediately. +++// Conceptually TryPark() should be equivalent to park(0). +++ +++int os::PlatformEvent::TryPark() { +++ for (;;) { +++ const int v = _Event ; +++ guarantee ((v == 0) || (v == 1), "invariant") ; +++ if (Atomic::cmpxchg (0, &_Event, v) == v) return v ; +++ } +++} +++ +++void os::PlatformEvent::park() { // AKA "down()" +++ // Invariant: Only the thread associated with the Event/PlatformEvent +++ // may call park(). +++ // TODO: assert that _Assoc != NULL or _Assoc == Self +++ int v ; +++ for (;;) { +++ v = _Event ; +++ if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; +++ } +++ guarantee (v >= 0, "invariant") ; +++ if (v == 0) { +++ // Do this the hard way by blocking ... +++ int status = pthread_mutex_lock(_mutex); +++ assert_status(status == 0, status, "mutex_lock"); +++ guarantee (_nParked == 0, "invariant") ; +++ ++ _nParked ; +++ while (_Event < 0) { +++ status = pthread_cond_wait(_cond, _mutex); +++ // for some reason, under 2.7 lwp_cond_wait() may return ETIME ... +++ // Treat this the same as if the wait was interrupted +++ if (status == ETIME) { status = EINTR; } +++ assert_status(status == 0 || status == EINTR, status, "cond_wait"); +++ } +++ -- _nParked ; +++ +++ _Event = 0 ; +++ status = pthread_mutex_unlock(_mutex); +++ assert_status(status == 0, status, "mutex_unlock"); +++ // Paranoia to ensure our locked and lock-free paths interact +++ // correctly with each other. +++ OrderAccess::fence(); +++ } +++ guarantee (_Event >= 0, "invariant") ; +++} +++ +++int os::PlatformEvent::park(jlong millis) { +++ guarantee (_nParked == 0, "invariant") ; +++ +++ int v ; +++ for (;;) { +++ v = _Event ; +++ if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; +++ } +++ guarantee (v >= 0, "invariant") ; +++ if (v != 0) return OS_OK ; +++ +++ // We do this the hard way, by blocking the thread. +++ // Consider enforcing a minimum timeout value. +++ struct timespec abst; +++ compute_abstime(&abst, millis); +++ +++ int ret = OS_TIMEOUT; +++ int status = pthread_mutex_lock(_mutex); +++ assert_status(status == 0, status, "mutex_lock"); +++ guarantee (_nParked == 0, "invariant") ; +++ ++_nParked ; +++ +++ // Object.wait(timo) will return because of +++ // (a) notification +++ // (b) timeout +++ // (c) thread.interrupt +++ // +++ // Thread.interrupt and object.notify{All} both call Event::set. +++ // That is, we treat thread.interrupt as a special case of notification. +++ // The underlying Solaris implementation, cond_timedwait, admits +++ // spurious/premature wakeups, but the JLS/JVM spec prevents the +++ // JVM from making those visible to Java code. As such, we must +++ // filter out spurious wakeups. We assume all ETIME returns are valid. +++ // +++ // TODO: properly differentiate simultaneous notify+interrupt. +++ // In that case, we should propagate the notify to another waiter. +++ +++ while (_Event < 0) { +++ status = os::Linux::safe_cond_timedwait(_cond, _mutex, &abst); +++ if (status != 0 && WorkAroundNPTLTimedWaitHang) { +++ pthread_cond_destroy (_cond); +++ pthread_cond_init (_cond, NULL) ; +++ } +++ assert_status(status == 0 || status == EINTR || +++ status == ETIME || status == ETIMEDOUT, +++ status, "cond_timedwait"); +++ if (!FilterSpuriousWakeups) break ; // previous semantics +++ if (status == ETIME || status == ETIMEDOUT) break ; +++ // We consume and ignore EINTR and spurious wakeups. +++ } +++ --_nParked ; +++ if (_Event >= 0) { +++ ret = OS_OK; +++ } +++ _Event = 0 ; +++ status = pthread_mutex_unlock(_mutex); +++ assert_status(status == 0, status, "mutex_unlock"); +++ assert (_nParked == 0, "invariant") ; +++ // Paranoia to ensure our locked and lock-free paths interact +++ // correctly with each other. +++ OrderAccess::fence(); +++ return ret; +++} +++ +++void os::PlatformEvent::unpark() { +++ // Transitions for _Event: +++ // 0 :=> 1 +++ // 1 :=> 1 +++ // -1 :=> either 0 or 1; must signal target thread +++ // That is, we can safely transition _Event from -1 to either +++ // 0 or 1. Forcing 1 is slightly more efficient for back-to-back +++ // unpark() calls. +++ // See also: "Semaphores in Plan 9" by Mullender & Cox +++ // +++ // Note: Forcing a transition from "-1" to "1" on an unpark() means +++ // that it will take two back-to-back park() calls for the owning +++ // thread to block. This has the benefit of forcing a spurious return +++ // from the first park() call after an unpark() call which will help +++ // shake out uses of park() and unpark() without condition variables. +++ +++ if (Atomic::xchg(1, &_Event) >= 0) return; +++ +++ // Wait for the thread associated with the event to vacate +++ int status = pthread_mutex_lock(_mutex); +++ assert_status(status == 0, status, "mutex_lock"); +++ int AnyWaiters = _nParked; +++ assert(AnyWaiters == 0 || AnyWaiters == 1, "invariant"); +++ if (AnyWaiters != 0 && WorkAroundNPTLTimedWaitHang) { +++ AnyWaiters = 0; +++ pthread_cond_signal(_cond); +++ } +++ status = pthread_mutex_unlock(_mutex); +++ assert_status(status == 0, status, "mutex_unlock"); +++ if (AnyWaiters != 0) { +++ status = pthread_cond_signal(_cond); +++ assert_status(status == 0, status, "cond_signal"); +++ } +++ +++ // Note that we signal() _after dropping the lock for "immortal" Events. +++ // This is safe and avoids a common class of futile wakeups. In rare +++ // circumstances this can cause a thread to return prematurely from +++ // cond_{timed}wait() but the spurious wakeup is benign and the victim will +++ // simply re-test the condition and re-park itself. +++} +++ +++ +++// JSR166 +++// ------------------------------------------------------- +++ +++/* +++ * The solaris and linux implementations of park/unpark are fairly +++ * conservative for now, but can be improved. They currently use a +++ * mutex/condvar pair, plus a a count. +++ * Park decrements count if > 0, else does a condvar wait. Unpark +++ * sets count to 1 and signals condvar. Only one thread ever waits +++ * on the condvar. Contention seen when trying to park implies that someone +++ * is unparking you, so don't wait. And spurious returns are fine, so there +++ * is no need to track notifications. +++ */ +++ +++#define MAX_SECS 100000000 +++/* +++ * This code is common to linux and solaris and will be moved to a +++ * common place in dolphin. +++ * +++ * The passed in time value is either a relative time in nanoseconds +++ * or an absolute time in milliseconds. Either way it has to be unpacked +++ * into suitable seconds and nanoseconds components and stored in the +++ * given timespec structure. +++ * Given time is a 64-bit value and the time_t used in the timespec is only +++ * a signed-32-bit value (except on 64-bit Linux) we have to watch for +++ * overflow if times way in the future are given. Further on Solaris versions +++ * prior to 10 there is a restriction (see cond_timedwait) that the specified +++ * number of seconds, in abstime, is less than current_time + 100,000,000. +++ * As it will be 28 years before "now + 100000000" will overflow we can +++ * ignore overflow and just impose a hard-limit on seconds using the value +++ * of "now + 100,000,000". This places a limit on the timeout of about 3.17 +++ * years from "now". +++ */ +++ +++static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { +++ assert (time > 0, "convertTime"); +++ +++ struct timeval now; +++ int status = gettimeofday(&now, NULL); +++ assert(status == 0, "gettimeofday"); +++ +++ time_t max_secs = now.tv_sec + MAX_SECS; +++ +++ if (isAbsolute) { +++ jlong secs = time / 1000; +++ if (secs > max_secs) { +++ absTime->tv_sec = max_secs; +++ } +++ else { +++ absTime->tv_sec = secs; +++ } +++ absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; +++ } +++ else { +++ jlong secs = time / NANOSECS_PER_SEC; +++ if (secs >= MAX_SECS) { +++ absTime->tv_sec = max_secs; +++ absTime->tv_nsec = 0; +++ } +++ else { +++ absTime->tv_sec = now.tv_sec + secs; +++ absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; +++ if (absTime->tv_nsec >= NANOSECS_PER_SEC) { +++ absTime->tv_nsec -= NANOSECS_PER_SEC; +++ ++absTime->tv_sec; // note: this must be <= max_secs +++ } +++ } +++ } +++ assert(absTime->tv_sec >= 0, "tv_sec < 0"); +++ assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); +++ assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); +++ assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); +++} +++ +++void Parker::park(bool isAbsolute, jlong time) { +++ // Ideally we'd do something useful while spinning, such +++ // as calling unpackTime(). +++ +++ // Optional fast-path check: +++ // Return immediately if a permit is available. +++ // We depend on Atomic::xchg() having full barrier semantics +++ // since we are doing a lock-free update to _counter. +++ if (Atomic::xchg(0, &_counter) > 0) return; +++ +++ Thread* thread = Thread::current(); +++ assert(thread->is_Java_thread(), "Must be JavaThread"); +++ JavaThread *jt = (JavaThread *)thread; +++ +++ // Optional optimization -- avoid state transitions if there's an interrupt pending. +++ // Check interrupt before trying to wait +++ if (Thread::is_interrupted(thread, false)) { +++ return; +++ } +++ +++ // Next, demultiplex/decode time arguments +++ timespec absTime; +++ if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all +++ return; +++ } +++ if (time > 0) { +++ unpackTime(&absTime, isAbsolute, time); +++ } +++ +++ +++ // Enter safepoint region +++ // Beware of deadlocks such as 6317397. +++ // The per-thread Parker:: mutex is a classic leaf-lock. +++ // In particular a thread must never block on the Threads_lock while +++ // holding the Parker:: mutex. If safepoints are pending both the +++ // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. +++ ThreadBlockInVM tbivm(jt); +++ +++ // Don't wait if cannot get lock since interference arises from +++ // unblocking. Also. check interrupt before trying wait +++ if (Thread::is_interrupted(thread, false) || pthread_mutex_trylock(_mutex) != 0) { +++ return; +++ } +++ +++ int status ; +++ if (_counter > 0) { // no wait needed +++ _counter = 0; +++ status = pthread_mutex_unlock(_mutex); +++ assert (status == 0, "invariant") ; +++ // Paranoia to ensure our locked and lock-free paths interact +++ // correctly with each other and Java-level accesses. +++ OrderAccess::fence(); +++ return; +++ } +++ +++#ifdef ASSERT +++ // Don't catch signals while blocked; let the running threads have the signals. +++ // (This allows a debugger to break into the running thread.) +++ sigset_t oldsigs; +++ sigset_t* allowdebug_blocked = os::Linux::allowdebug_blocked_signals(); +++ pthread_sigmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); +++#endif +++ +++ OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); +++ jt->set_suspend_equivalent(); +++ // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() +++ +++ if (time == 0) { +++ status = pthread_cond_wait (_cond, _mutex) ; +++ } else { +++ status = os::Linux::safe_cond_timedwait (_cond, _mutex, &absTime) ; +++ if (status != 0 && WorkAroundNPTLTimedWaitHang) { +++ pthread_cond_destroy (_cond) ; +++ pthread_cond_init (_cond, NULL); +++ } +++ } +++ assert_status(status == 0 || status == EINTR || +++ status == ETIME || status == ETIMEDOUT, +++ status, "cond_timedwait"); +++ +++#ifdef ASSERT +++ pthread_sigmask(SIG_SETMASK, &oldsigs, NULL); +++#endif +++ +++ _counter = 0 ; +++ status = pthread_mutex_unlock(_mutex) ; +++ assert_status(status == 0, status, "invariant") ; +++ // Paranoia to ensure our locked and lock-free paths interact +++ // correctly with each other and Java-level accesses. +++ OrderAccess::fence(); +++ +++ // If externally suspended while waiting, re-suspend +++ if (jt->handle_special_suspend_equivalent_condition()) { +++ jt->java_suspend_self(); +++ } +++} +++ +++void Parker::unpark() { +++ int s, status ; +++ status = pthread_mutex_lock(_mutex); +++ assert (status == 0, "invariant") ; +++ s = _counter; +++ _counter = 1; +++ if (s < 1) { +++ if (WorkAroundNPTLTimedWaitHang) { +++ status = pthread_cond_signal (_cond) ; +++ assert (status == 0, "invariant") ; +++ status = pthread_mutex_unlock(_mutex); +++ assert (status == 0, "invariant") ; +++ } else { +++ status = pthread_mutex_unlock(_mutex); +++ assert (status == 0, "invariant") ; +++ status = pthread_cond_signal (_cond) ; +++ assert (status == 0, "invariant") ; +++ } +++ } else { +++ pthread_mutex_unlock(_mutex); +++ assert (status == 0, "invariant") ; +++ } +++} +++ +++ +++extern char** environ; +++ +++// Run the specified command in a separate process. Return its exit value, +++// or -1 on failure (e.g. can't fork a new process). +++// Unlike system(), this function can be called from signal handler. It +++// doesn't block SIGINT et al. +++int os::fork_and_exec(char* cmd) { +++ const char * argv[4] = {"sh", "-c", cmd, NULL}; +++ +++ // fork() in LinuxThreads/NPTL is not async-safe. It needs to run +++ // pthread_atfork handlers and reset pthread library. All we need is a +++ // separate process to execve. Make a direct syscall to fork process. +++ // On IA64 there's no fork syscall, we have to use fork() and hope for +++ // the best... +++ pid_t pid = NOT_IA64(NOT_AARCH64(syscall(SYS_fork);)) +++ IA64_ONLY(fork();) +++ AARCH64_ONLY(vfork();) +++ +++ if (pid < 0) { +++ // fork failed +++ return -1; +++ +++ } else if (pid == 0) { +++ // child process +++ +++ // execve() in LinuxThreads will call pthread_kill_other_threads_np() +++ // first to kill every thread on the thread list. Because this list is +++ // not reset by fork() (see notes above), execve() will instead kill +++ // every thread in the parent process. We know this is the only thread +++ // in the new process, so make a system call directly. +++ // IA64 should use normal execve() from glibc to match the glibc fork() +++ // above. +++ NOT_IA64(syscall(SYS_execve, "/bin/sh", argv, environ);) +++ IA64_ONLY(execve("/bin/sh", (char* const*)argv, environ);) +++ +++ // execve failed +++ _exit(-1); +++ +++ } else { +++ // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't +++ // care about the actual exit code, for now. +++ +++ int status; +++ +++ // Wait for the child process to exit. This returns immediately if +++ // the child has already exited. */ +++ while (waitpid(pid, &status, 0) < 0) { +++ switch (errno) { +++ case ECHILD: return 0; +++ case EINTR: break; +++ default: return -1; +++ } +++ } +++ +++ if (WIFEXITED(status)) { +++ // The child exited normally; get its exit code. +++ return WEXITSTATUS(status); +++ } else if (WIFSIGNALED(status)) { +++ // The child exited because of a signal +++ // The best value to return is 0x80 + signal number, +++ // because that is what all Unix shells do, and because +++ // it allows callers to distinguish between process exit and +++ // process death by signal. +++ return 0x80 + WTERMSIG(status); +++ } else { +++ // Unknown exit code; pass it through +++ return status; +++ } +++ } +++} +++ +++// is_headless_jre() +++// +++// Test for the existence of xawt/libmawt.so or libawt_xawt.so +++// in order to report if we are running in a headless jre +++// +++// Since JDK8 xawt/libmawt.so was moved into the same directory +++// as libawt.so, and renamed libawt_xawt.so +++// +++bool os::is_headless_jre() { +++ struct stat statbuf; +++ char buf[MAXPATHLEN]; +++ char libmawtpath[MAXPATHLEN]; +++ const char *xawtstr = "/xawt/libmawt.so"; +++ const char *new_xawtstr = "/libawt_xawt.so"; +++ char *p; +++ +++ // Get path to libjvm.so +++ os::jvm_path(buf, sizeof(buf)); +++ +++ // Get rid of libjvm.so +++ p = strrchr(buf, '/'); +++ if (p == NULL) return false; +++ else *p = '\0'; +++ +++ // Get rid of client or server +++ p = strrchr(buf, '/'); +++ if (p == NULL) return false; +++ else *p = '\0'; +++ +++ // check xawt/libmawt.so +++ strcpy(libmawtpath, buf); +++ strcat(libmawtpath, xawtstr); +++ if (::stat(libmawtpath, &statbuf) == 0) return false; +++ +++ // check libawt_xawt.so +++ strcpy(libmawtpath, buf); +++ strcat(libmawtpath, new_xawtstr); +++ if (::stat(libmawtpath, &statbuf) == 0) return false; +++ +++ return true; +++} +++ +++// Get the default path to the core file +++// Returns the length of the string +++int os::get_core_path(char* buffer, size_t bufferSize) { +++ const char* p = get_current_directory(buffer, bufferSize); +++ +++ if (p == NULL) { +++ assert(p != NULL, "failed to get current directory"); +++ return 0; +++ } +++ +++ return strlen(buffer); +++} +++ +++#ifdef JAVASE_EMBEDDED +++// +++// A thread to watch the '/dev/mem_notify' device, which will tell us when the OS is running low on memory. +++// +++MemNotifyThread* MemNotifyThread::_memnotify_thread = NULL; +++ +++// ctor +++// +++MemNotifyThread::MemNotifyThread(int fd): Thread() { +++ assert(memnotify_thread() == NULL, "we can only allocate one MemNotifyThread"); +++ _fd = fd; +++ +++ if (os::create_thread(this, os::os_thread)) { +++ _memnotify_thread = this; +++ os::set_priority(this, NearMaxPriority); +++ os::start_thread(this); +++ } +++} +++ +++// Where all the work gets done +++// +++void MemNotifyThread::run() { +++ assert(this == memnotify_thread(), "expected the singleton MemNotifyThread"); +++ +++ // Set up the select arguments +++ fd_set rfds; +++ if (_fd != -1) { +++ FD_ZERO(&rfds); +++ FD_SET(_fd, &rfds); +++ } +++ +++ // Now wait for the mem_notify device to wake up +++ while (1) { +++ // Wait for the mem_notify device to signal us.. +++ int rc = select(_fd+1, _fd != -1 ? &rfds : NULL, NULL, NULL, NULL); +++ if (rc == -1) { +++ perror("select!\n"); +++ break; +++ } else if (rc) { +++ //ssize_t free_before = os::available_memory(); +++ //tty->print ("Notified: Free: %dK \n",os::available_memory()/1024); +++ +++ // The kernel is telling us there is not much memory left... +++ // try to do something about that +++ +++ // If we are not already in a GC, try one. +++ if (!Universe::heap()->is_gc_active()) { +++ Universe::heap()->collect(GCCause::_allocation_failure); +++ +++ //ssize_t free_after = os::available_memory(); +++ //tty->print ("Post-Notify: Free: %dK\n",free_after/1024); +++ //tty->print ("GC freed: %dK\n", (free_after - free_before)/1024); +++ } +++ // We might want to do something like the following if we find the GC's are not helping... +++ // Universe::heap()->size_policy()->set_gc_time_limit_exceeded(true); +++ } +++ } +++} +++ +++// +++// See if the /dev/mem_notify device exists, and if so, start a thread to monitor it. +++// +++void MemNotifyThread::start() { +++ int fd; +++ fd = open ("/dev/mem_notify", O_RDONLY, 0); +++ if (fd < 0) { +++ return; +++ } +++ +++ if (memnotify_thread() == NULL) { +++ new MemNotifyThread(fd); +++ } +++} +++ +++#endif // JAVASE_EMBEDDED +diff -Nur openjdk.orig/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp -+--- openjdk.orig/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-01-28 18:58:08.000000000 +0100 -++++ openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-02-10 11:31:48.000000000 +0100 ++--- openjdk.orig/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-02-20 19:51:45.000000000 +0100 +++++ openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-05-13 16:14:56.641091455 +0200 +@@ -253,7 +253,7 @@ + #elif defined(__APPLE__) + inline int g_isnan(double f) { return isnan(f); } @@ -95,8 +6116,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + // Wide characters +diff -Nur openjdk.orig/jdk/make/com/sun/java/pack/Makefile openjdk/jdk/make/com/sun/java/pack/Makefile -+--- openjdk.orig/jdk/make/com/sun/java/pack/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/com/sun/java/pack/Makefile 2014-02-10 11:31:48.000000000 +0100 ++--- openjdk.orig/jdk/make/com/sun/java/pack/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/com/sun/java/pack/Makefile 2014-05-13 16:14:56.641091455 +0200 +@@ -79,7 +79,7 @@ + OTHER_CXXFLAGS += $(ZLIB_CFLAGS) -DSYSTEM_ZLIB + endif @@ -107,8 +6128,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + endif + +diff -Nur openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile openjdk/jdk/make/com/sun/nio/sctp/Makefile -+--- openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/com/sun/nio/sctp/Makefile 2014-02-10 11:31:48.000000000 +0100 ++--- openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/com/sun/nio/sctp/Makefile 2014-05-13 16:14:56.641091455 +0200 +@@ -64,7 +64,7 @@ + COMPILER_WARNINGS_FATAL=true + endif @@ -119,8 +6140,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + ifeq ($(PLATFORM), solaris) + #LIBSCTP = -lsctp +diff -Nur openjdk.orig/jdk/make/common/Defs.gmk openjdk/jdk/make/common/Defs.gmk -+--- openjdk.orig/jdk/make/common/Defs.gmk 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/common/Defs.gmk 2014-02-10 11:31:48.000000000 +0100 ++--- openjdk.orig/jdk/make/common/Defs.gmk 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/common/Defs.gmk 2014-05-13 16:14:56.641091455 +0200 +@@ -204,7 +204,7 @@ + ifeq ($(PLATFORM), macosx) + FREETYPE_HEADERS_PATH = /usr/X11R6/include @@ -131,8 +6152,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + endif + endif +diff -Nur openjdk.orig/jdk/make/common/Sanity.gmk openjdk/jdk/make/common/Sanity.gmk -+--- openjdk.orig/jdk/make/common/Sanity.gmk 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/common/Sanity.gmk 2014-02-12 12:28:47.000000000 +0100 ++--- openjdk.orig/jdk/make/common/Sanity.gmk 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/common/Sanity.gmk 2014-05-13 16:14:56.641091455 +0200 +@@ -91,8 +91,7 @@ + sane-ld_run_path \ + sane-alt_bootdir \ @@ -144,8 +6165,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + ifdef OPENJDK + sanity-all:: sane-freetype +diff -Nur openjdk.orig/jdk/make/common/shared/Platform.gmk openjdk/jdk/make/common/shared/Platform.gmk -+--- openjdk.orig/jdk/make/common/shared/Platform.gmk 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/common/shared/Platform.gmk 2014-02-10 11:32:16.000000000 +0100 ++--- openjdk.orig/jdk/make/common/shared/Platform.gmk 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/common/shared/Platform.gmk 2014-05-13 16:14:56.641091455 +0200 +@@ -160,9 +160,6 @@ + else + mach := $(shell uname -m) @@ -157,8 +6178,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + i[3-9]86) \ + echo i586 \ +diff -Nur openjdk.orig/jdk/make/common/shared/Sanity.gmk openjdk/jdk/make/common/shared/Sanity.gmk -+--- openjdk.orig/jdk/make/common/shared/Sanity.gmk 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/common/shared/Sanity.gmk 2014-02-12 12:31:12.000000000 +0100 ++--- openjdk.orig/jdk/make/common/shared/Sanity.gmk 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/common/shared/Sanity.gmk 2014-05-13 16:14:56.641091455 +0200 +@@ -114,11 +114,6 @@ + elif [ -f /etc/lsb-release ] ; then \ + $(EGREP) DISTRIB_RELEASE /etc/lsb-release | $(SED) -e 's@.*DISTRIB_RELEASE=\(.*\)@\1@'; \ @@ -215,8 +6236,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + # If a sanity file doesn't exist, just make sure it's dir exists + $(SANITY_FILES): +diff -Nur openjdk.orig/jdk/make/java/instrument/Makefile openjdk/jdk/make/java/instrument/Makefile -+--- openjdk.orig/jdk/make/java/instrument/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/java/instrument/Makefile 2014-02-10 11:31:49.000000000 +0100 ++--- openjdk.orig/jdk/make/java/instrument/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/java/instrument/Makefile 2014-05-13 16:14:56.641091455 +0200 +@@ -140,6 +140,8 @@ + # We don't want to link against -ljava + JAVALIB= @@ -227,8 +6248,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + # Add to ambient vpath so we pick up the library files + # +diff -Nur openjdk.orig/jdk/make/java/net/Makefile openjdk/jdk/make/java/net/Makefile -+--- openjdk.orig/jdk/make/java/net/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/java/net/Makefile 2014-02-10 11:31:49.000000000 +0100 ++--- openjdk.orig/jdk/make/java/net/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/java/net/Makefile 2014-05-13 16:14:56.641091455 +0200 +@@ -25,7 +25,7 @@ + + BUILDDIR = ../.. @@ -239,8 +6260,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + include $(BUILDDIR)/common/Defs.gmk + +diff -Nur openjdk.orig/jdk/make/java/nio/Makefile openjdk/jdk/make/java/nio/Makefile -+--- openjdk.orig/jdk/make/java/nio/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/java/nio/Makefile 2014-02-10 11:31:49.000000000 +0100 ++--- openjdk.orig/jdk/make/java/nio/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/java/nio/Makefile 2014-05-13 16:14:56.645091463 +0200 +@@ -373,7 +373,7 @@ + endif + @@ -269,8 +6290,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + ifdef NIO_PLATFORM_CLASSES_ROOT_DIR + $(SFS_GEN)/UnixConstants.java: $(NIO_PLATFORM_CLASSES_ROOT_DIR)/sun/nio/fs/UnixConstants-$(PLATFORM)-$(ARCH).java +diff -Nur openjdk.orig/jdk/make/java/npt/Makefile openjdk/jdk/make/java/npt/Makefile -+--- openjdk.orig/jdk/make/java/npt/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/java/npt/Makefile 2014-02-10 11:31:49.000000000 +0100 ++--- openjdk.orig/jdk/make/java/npt/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/java/npt/Makefile 2014-05-13 16:14:56.645091463 +0200 +@@ -64,6 +64,8 @@ + # We don't want to link against -ljava + JAVALIB= @@ -281,8 +6302,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + ifeq ($(PLATFORM), windows) + OTHER_LCF += -export:nptInitialize -export:nptTerminate +diff -Nur openjdk.orig/jdk/make/sun/awt/mawt.gmk openjdk/jdk/make/sun/awt/mawt.gmk -+--- openjdk.orig/jdk/make/sun/awt/mawt.gmk 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/sun/awt/mawt.gmk 2014-02-10 11:31:49.000000000 +0100 ++--- openjdk.orig/jdk/make/sun/awt/mawt.gmk 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/sun/awt/mawt.gmk 2014-05-13 16:14:56.645091463 +0200 +@@ -151,22 +151,6 @@ + #endif + @@ -315,7 +6336,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + endif + + endif -+@@ -230,11 +214,6 @@ ++@@ -231,11 +215,6 @@ + CPPFLAGS += -I$(PLATFORM_SRC)/native/common/deps/fontconfig2 + endif + @@ -327,7 +6348,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + CPPFLAGS += -I$(SHARE_SRC)/native/$(PKGDIR)/debug \ + -I$(SHARE_SRC)/native/$(PKGDIR)/../font \ -+@@ -269,11 +248,6 @@ ++@@ -270,11 +249,6 @@ + endif # !HEADLESS + endif # PLATFORM + @@ -339,9 +6360,310 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + ifeq ($(PLATFORM), macosx)) + CPPFLAGS += -I$(OPENWIN_HOME)/include/X11/extensions \ ++diff -Nur openjdk.orig/jdk/make/sun/awt/mawt.gmk.orig openjdk/jdk/make/sun/awt/mawt.gmk.orig ++--- openjdk.orig/jdk/make/sun/awt/mawt.gmk.orig 1970-01-01 01:00:00.000000000 +0100 +++++ openjdk/jdk/make/sun/awt/mawt.gmk.orig 2014-04-12 01:23:06.000000000 +0200 ++@@ -0,0 +1,297 @@ +++# +++# Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. +++# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. +++# +++# This code is free software; you can redistribute it and/or modify it +++# under the terms of the GNU General Public License version 2 only, as +++# published by the Free Software Foundation. Oracle designates this +++# particular file as subject to the "Classpath" exception as provided +++# by Oracle in the LICENSE file that accompanied this code. +++# +++# This code is distributed in the hope that it will be useful, but WITHOUT +++# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +++# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +++# version 2 for more details (a copy is included in the LICENSE file that +++# accompanied this code). +++# +++# You should have received a copy of the GNU General Public License version +++# 2 along with this work; if not, write to the Free Software Foundation, +++# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +++# +++# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA +++# or visit www.oracle.com if you need additional information or have any +++# questions. +++# +++ +++# +++# to create directory: +++# +++INIT += $(LIB_LOCATION) +++ +++# +++# Files +++# +++# mawt.gmk is just used in building X/Motif native code, so +++# this list of java files is no longer included. +++#include FILES_java_unix.gmk +++include $(BUILDDIR)/sun/awt/FILES_c_unix.gmk +++ +++include $(BUILDDIR)/sun/awt/FILES_export_unix.gmk +++ +++# Check which C files should be built. Headless uses only +++# non-motif files. Also, a version-specific motif file is +++# compiled based on the motif version. +++ifdef HEADLESS +++ FILES_c = $(FILES_NO_MOTIF_c) +++else +++# FILES_c = $(FILES_MOTIF_c) $(FILES_NO_MOTIF_c) +++# XXX if in FILES_MOTIF_c there are unrelated to motif stuff, create a separate list! +++ FILES_c = $(FILES_NO_MOTIF_c) +++endif +++ +++ifeq ($(PLATFORM), solaris) +++ ifneq ($(ARCH), amd64) +++ FILES_reorder += reorder-$(ARCH) +++ endif +++endif +++ +++# +++# Rules +++# +++ +++# Class files should be built & clobbered in make/sun/awt +++# If removing this line, also reinclude sun_awt.jmk +++DONT_CLOBBER_CLASSES = true +++ +++ +++ifndef HEADLESS +++ifeq ($(VARIANT), OPT) +++FILES_m = ../awt/mapfile-mawt-vers +++endif +++endif +++ +++# Since this library will be living in a subdirectory below the other libraries +++# we need to add an extra runpath so that libraries in the upper directory +++# are found at runtime. +++LD_RUNPATH_EXTRAS = .. +++ +++include $(BUILDDIR)/common/Mapfile-vers.gmk +++include $(BUILDDIR)/common/Library.gmk +++ +++$(LIB_LOCATION): +++ $(MKDIR) -p $@ +++ +++clean:: +++ +++# +++# Add to the ambient vpath to pick up files in subdirectories +++# +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/alphacomposite +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/image +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/image/gif +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/image/cvutils +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/shell +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/medialib +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d/opengl +++vpath %.c $(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/opengl +++vpath %.c $(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/x11 +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/debug +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../font +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d/loops +++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d/pipe +++vpath %.cpp $(SHARE_SRC)/native/$(PKGDIR)/image +++vpath %.c $(PLATFORM_SRC)/native/$(PKGDIR)/robot_child +++ +++ifndef USE_SYSTEM_CUPS +++vpath %.c $(PLATFORM_SRC)/native/common/deps +++endif +++ +++ifndef USE_SYSTEM_FONTCONFIG +++vpath %.c $(PLATFORM_SRC)/native/common/deps/fontconfig2 +++endif +++ +++# +++# Libraries to link in. +++# +++ +++ +++ifeq ($(DEBUG_BINARIES), true) +++ CFLAGS += -g +++endif +++ifeq ($(HEADLESS),true) +++CFLAGS += -DHEADLESS=$(HEADLESS) +++CPPFLAGS += -DHEADLESS=$(HEADLESS) +++OTHER_LDLIBS = +++else +++#CFLAGS += -DMOTIF_VERSION=$(MOTIF_VERSION) +++ +++#ifeq ($(STATIC_MOTIF),true) +++# LIBXM = $(MOTIF_LIB)/libXm.a -lXp -lXmu +++# ifeq ($(PLATFORM), linux) +++# ifeq ($(ARCH_DATA_MODEL), 64) +++# LIBXT = -lXt +++# else +++# # Allows for builds on Debian GNU Linux, X11 is in a different place +++# LIBXT = $(firstword $(wildcard /usr/X11R6/lib/libXt.a) \ +++# $(wildcard /usr/lib/libXt.a)) +++# LIBSM = $(firstword $(wildcard /usr/X11R6/lib/libSM.a) \ +++# $(wildcard /usr/lib/libSM.a)) +++# LIBICE = $(firstword $(wildcard /usr/X11R6/lib/libICE.a) \ +++# $(wildcard /usr/lib/libICE.a)) +++# endif +++# endif +++#else +++# LIBXM = -L$(MOTIF_LIB) -lXm -lXp +++# ifeq ($(PLATFORM), linux) +++# LIBXT = -lXt +++# LIBSM = +++# LIBICE = +++# endif +++#endif +++ +++LIBXTST = -lXtst +++ifeq ($(PLATFORM), linux) +++ ifeq ($(ARCH_DATA_MODEL), 64) +++ # XXX what about the rest of them? +++ LIBXT = -lXt +++ else +++ # Allows for builds on Debian GNU Linux, X11 is in a different place +++ LIBXT = $(firstword $(wildcard $(OPENWIN_LIB)/libXt.a) \ +++ $(wildcard /usr/lib/libXt.a)) +++ LIBSM = $(firstword $(wildcard $(OPENWIN_LIB)/libSM.a) \ +++ $(wildcard /usr/lib/libSM.a)) +++ LIBICE = $(firstword $(wildcard $(OPENWIN_LIB)/libICE.a) \ +++ $(wildcard /usr/lib/libICE.a)) +++ LIBXTST = $(firstword $(wildcard $(OPENWIN_LIB)/libXtst.a) \ +++ $(wildcard /usr/lib/libXtst.a)) +++ endif +++endif +++ +++# Use -lXmu for EditRes support +++LIBXMU_DBG = -lXmu +++LIBXMU_OPT = +++LIBXMU = $(LIBXMU_$(VARIANT)) +++ +++ifeq ($(PLATFORM), solaris) +++OTHER_LDLIBS = -lXt -lXext $(LIBXTST) $(LIBXMU) -lX11 -lXi +++endif +++ +++ifneq (,$(findstring $(PLATFORM), linux macosx)) +++OTHER_CFLAGS += -DMLIB_NO_LIBSUNMATH +++# XXX what is this define below? Isn't it motif-related? +++OTHER_CFLAGS += -DXMSTRINGDEFINES=1 +++OTHER_LDLIBS = $(LIBXMU) $(LIBXTST) -lXext $(LIBXT) $(LIBSM) $(LIBICE) -lX11 -lXi +++endif +++ +++endif +++# !HEADLESS +++ +++OTHER_LDLIBS += $(JVMLIB) $(LIBCXX) \ +++ -lawt $(LIBM) +++ +++ifdef USE_SYSTEM_CUPS +++ OTHER_LDLIBS += $(CUPS_LIBS) +++else +++ OTHER_LDLIBS += $(LIBDL) +++endif +++ +++ifdef USE_SYSTEM_FONTCONFIG +++ OTHER_LDLIBS += $(FONTCONFIG_LIBS) +++else +++ OTHER_LDLIBS += $(LIBDL) +++endif +++ +++# +++# Sun CC with -Xa misdefines __STDC__ to 0 (zero). +++# The following will force checking of X11 prototypes. +++# +++ifneq ($(CC_VERSION),gcc) +++CPPFLAGS += -DFUNCPROTO=15 +++endif +++ +++# +++# Other extra flags needed for compiling. +++# +++ifdef CUPS_CFLAGS +++ CPPFLAGS += $(CUPS_CFLAGS) +++else +++ CPPFLAGS += -I$(CUPS_HEADERS_PATH) +++endif +++ +++ifdef USE_SYSTEM_CUPS +++ CPPFLAGS += -DUSE_SYSTEM_CUPS +++else +++ CPPFLAGS += -I$(PLATFORM_SRC)/native/common/deps +++endif +++ +++ifdef USE_SYSTEM_FONTCONFIG +++ CPPFLAGS += $(FONTCONFIG_CFLAGS) -DUSE_SYSTEM_FONTCONFIG +++else +++ CPPFLAGS += -I$(PLATFORM_SRC)/native/common/deps/fontconfig2 +++endif +++ +++ifndef HEADLESS +++CPPFLAGS += -I$(OPENWIN_HOME)/include +++LDFLAGS += -L$(OPENWIN_LIB) +++ +++endif # !HEADLESS +++ +++CPPFLAGS += -I$(SHARE_SRC)/native/$(PKGDIR)/debug \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/../font \ +++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../font \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/image \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/image/cvutils \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/shell \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/alphacomposite \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/medialib \ +++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/medialib \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d \ +++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../java2d \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d/loops \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d/pipe \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d/opengl \ +++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/opengl \ +++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/x11 \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/../dc/doe \ +++ -I$(SHARE_SRC)/native/$(PKGDIR)/../dc/path \ +++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../jdga \ +++ -I$(PLATFORM_SRC)/native/$(PKGDIR) \ +++ $(EVENT_MODEL) +++ +++ifeq ($(PLATFORM), macosx) +++CPPFLAGS += -I$(CUPS_HEADERS_PATH) +++ +++ifndef HEADLESS +++CPPFLAGS += -I$(MOTIF_DIR)/include \ +++ -I$(OPENWIN_HOME)/include +++LDFLAGS += -L$(MOTIF_LIB) -L$(OPENWIN_LIB) +++ +++endif # !HEADLESS +++endif # PLATFORM +++ +++ifeq ($(PLATFORM), linux) +++ # Checking for the X11/extensions headers at the additional location +++ CPPFLAGS += -I$(firstword $(wildcard $(OPENWIN_HOME)/include/X11/extensions) \ +++ $(wildcard /usr/include/X11/extensions)) +++endif +++ +++ifeq ($(PLATFORM), macosx)) +++ CPPFLAGS += -I$(OPENWIN_HOME)/include/X11/extensions \ +++ -I$(OPENWIN_HOME)/include +++endif +++ +++ifeq ($(PLATFORM), solaris) +++ CPPFLAGS += -I$(OPENWIN_HOME)/include/X11/extensions +++endif +++ +++ifeq ($(PLATFORM), macosx) +++ CPPFLAGS += -DX11_PATH=\"$(X11_PATH)\" -DPACKAGE_PATH=\"$(PACKAGE_PATH)\" +++endif +++ +++LDFLAGS += -L$(LIBDIR)/$(LIBARCH)/$(TSOBJDIR) \ +++ $(AWT_RUNPATH) +++ +++CLASSES.export += java.io.InputStream \ +++ java.lang.ThreadGroup +++ +diff -Nur openjdk.orig/jdk/make/sun/splashscreen/Makefile openjdk/jdk/make/sun/splashscreen/Makefile -+--- openjdk.orig/jdk/make/sun/splashscreen/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/sun/splashscreen/Makefile 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/make/sun/splashscreen/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/sun/splashscreen/Makefile 2014-05-13 16:14:56.645091463 +0200 +@@ -55,6 +55,8 @@ + + JAVALIB= @@ -352,8 +6674,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + # C Flags + # +diff -Nur openjdk.orig/jdk/make/sun/xawt/Makefile openjdk/jdk/make/sun/xawt/Makefile -+--- openjdk.orig/jdk/make/sun/xawt/Makefile 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/make/sun/xawt/Makefile 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/make/sun/xawt/Makefile 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/make/sun/xawt/Makefile 2014-05-13 16:14:56.645091463 +0200 +@@ -292,16 +292,10 @@ + SIZERS = $(SIZER).32 + SIZERS_C = $(SIZER_32_C) @@ -394,8 +6716,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + @if [ "$(DOCOMPARE)$(suffix $@)" = "true.64" ]; then \ + $(ECHO) COMPARING $@ and $(STORED_SIZES_TMPL_$(PLATFORM)_$(LIBARCH)); \ +diff -Nur openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java -+--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-05-13 16:14:56.645091463 +0200 +@@ -69,7 +69,7 @@ + */ + static { @@ -406,8 +6728,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + /** +diff -Nur openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java -+--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-05-13 16:14:56.645091463 +0200 +@@ -78,7 +78,7 @@ + */ + static { @@ -418,8 +6740,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + /** +diff -Nur openjdk.orig/jdk/src/share/classes/java/net/DatagramPacket.java openjdk/jdk/src/share/classes/java/net/DatagramPacket.java -+--- openjdk.orig/jdk/src/share/classes/java/net/DatagramPacket.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/java/net/DatagramPacket.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/java/net/DatagramPacket.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/java/net/DatagramPacket.java 2014-05-13 16:14:56.645091463 +0200 +@@ -47,7 +47,7 @@ + */ + static { @@ -430,8 +6752,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + } + +diff -Nur openjdk.orig/jdk/src/share/classes/java/net/InetAddress.java openjdk/jdk/src/share/classes/java/net/InetAddress.java -+--- openjdk.orig/jdk/src/share/classes/java/net/InetAddress.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/java/net/InetAddress.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/java/net/InetAddress.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/java/net/InetAddress.java 2014-05-13 16:14:56.649091471 +0200 +@@ -267,7 +267,7 @@ + static { + preferIPv6Address = java.security.AccessController.doPrivileged( @@ -442,8 +6764,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + } + +diff -Nur openjdk.orig/jdk/src/share/classes/java/net/NetworkInterface.java openjdk/jdk/src/share/classes/java/net/NetworkInterface.java -+--- openjdk.orig/jdk/src/share/classes/java/net/NetworkInterface.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/java/net/NetworkInterface.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/java/net/NetworkInterface.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/java/net/NetworkInterface.java 2014-05-13 16:14:56.649091471 +0200 +@@ -53,7 +53,7 @@ + private static final int defaultIndex; /* index of defaultInterface */ + @@ -454,8 +6776,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + defaultInterface = DefaultInterface.getDefault(); + if (defaultInterface != null) { +diff -Nur openjdk.orig/jdk/src/share/classes/sun/net/sdp/SdpSupport.java openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java -+--- openjdk.orig/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-05-13 16:14:56.649091471 +0200 +@@ -76,6 +76,6 @@ + + static { @@ -465,8 +6787,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + } + } +diff -Nur openjdk.orig/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java -+--- openjdk.orig/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-05-13 16:14:56.649091471 +0200 +@@ -95,7 +95,7 @@ + }}); + if (b != null && b.booleanValue()) { @@ -477,8 +6799,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + } + } +diff -Nur openjdk.orig/jdk/src/share/classes/sun/nio/ch/Util.java openjdk/jdk/src/share/classes/sun/nio/ch/Util.java -+--- openjdk.orig/jdk/src/share/classes/sun/nio/ch/Util.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/share/classes/sun/nio/ch/Util.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/share/classes/sun/nio/ch/Util.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/share/classes/sun/nio/ch/Util.java 2014-05-13 16:14:56.649091471 +0200 +@@ -483,7 +483,7 @@ + return; + loaded = true; @@ -489,8 +6811,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + .doPrivileged(new sun.security.action.LoadLibraryAction("nio")); + // IOUtil must be initialized; Its native methods are called from +diff -Nur openjdk.orig/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java -+--- openjdk.orig/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-05-13 16:14:56.649091471 +0200 +@@ -247,7 +247,7 @@ + + static { @@ -501,8 +6823,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + } +diff -Nur openjdk.orig/jdk/src/solaris/native/sun/awt/awt_InputMethod.c openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c -+--- openjdk.orig/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-05-13 16:14:56.649091471 +0200 +@@ -246,7 +246,8 @@ + if (wcs == NULL) + return NULL; @@ -514,8 +6836,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + mbs = (char *) malloc(n * sizeof(char)); + if (mbs == NULL) { +diff -Nur openjdk.orig/jdk/src/solaris/native/sun/xawt/XToolkit.c openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c -+--- openjdk.orig/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-05-13 16:14:56.649091471 +0200 +@@ -27,9 +27,6 @@ + #include <X11/Xutil.h> + #include <X11/Xos.h> @@ -553,8 +6875,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + Window get_xawt_root_shell(JNIEnv *env) { + static jclass classXRootWindow = NULL; +diff -Nur openjdk.orig/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java -+--- openjdk.orig/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-01-28 19:02:26.000000000 +0100 -++++ openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-04-12 01:23:06.000000000 +0200 +++++ openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-05-13 16:14:56.649091471 +0200 +@@ -159,7 +159,7 @@ + + static { @@ -565,8 +6887,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + // start the address listener thread +diff -Nur openjdk.orig/Makefile openjdk/Makefile -+--- openjdk.orig/Makefile 2014-01-17 21:22:44.000000000 +0100 -++++ openjdk/Makefile 2014-02-10 11:31:50.000000000 +0100 ++--- openjdk.orig/Makefile 2014-04-04 19:44:40.000000000 +0200 +++++ openjdk/Makefile 2014-05-13 16:14:56.649091471 +0200 +@@ -53,9 +53,7 @@ + REL_JDK_DEBUG_IMAGE_DIR = ../$(OUTPUTDIR_BASENAME-debug)/$(JDK_IMAGE_DIRNAME) + REL_JDK_FASTDEBUG_IMAGE_DIR = ../$(OUTPUTDIR_BASENAME-fastdebug)/$(JDK_IMAGE_DIRNAME) @@ -578,52 +6900,6 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + ifndef JDK_TOPDIR + JDK_TOPDIR=$(TOPDIR)/jdk -+diff -Nur openjdk-boot.orig/hotspot/agent/src/os/linux/Makefile openjdk-boot/hotspot/agent/src/os/linux/Makefile -+--- openjdk-boot.orig/hotspot/agent/src/os/linux/Makefile 2014-02-20 19:51:45.000000000 +0100 -++++ openjdk-boot/hotspot/agent/src/os/linux/Makefile 2014-05-08 20:54:09.069009970 +0200 -+@@ -22,7 +22,7 @@ -+ # -+ # -+ -+-ARCH := $(shell if ([ `uname -m` = "ia64" ]) ; then echo ia64 ; elif ([ `uname -m` = "x86_64" ]) ; then echo amd64; elif ([ `uname -m` = "sparc64" ]) ; then echo sparc; else echo i386 ; fi ) -++JDKARCH := $(shell if ([ `uname -m` = "ia64" ]) ; then echo ia64 ; elif ([ `uname -m` = "x86_64" ]) ; then echo amd64; elif ([ `uname -m` = "sparc64" ]) ; then echo sparc; else echo i386 ; fi ) -+ -+ ifndef BUILD_GCC -+ BUILD_GCC = gcc -+@@ -45,9 +45,9 @@ -+ -+ LIBS = -lthread_db -+ -+-CFLAGS = -c -fPIC -g -D_GNU_SOURCE -D_$(ARCH)_ $(if $(filter $(ARCH),alpha),,-D$(ARCH)) $(INCLUDES) -D_FILE_OFFSET_BITS=64 -++CFLAGS = -c -fPIC -g -D_GNU_SOURCE -D_$(JDKARCH)_ $(if $(filter $(JDKARCH),alpha),,-D$(JDKARCH)) $(INCLUDES) -D_FILE_OFFSET_BITS=64 -+ -+-LIBSA = $(ARCH)/libsaproc.so -++LIBSA = $(JDKARCH)/libsaproc.so -+ -+ all: $(LIBSA) -+ -+@@ -74,17 +74,17 @@ -+ LFLAGS_LIBSA += $(LDFLAGS_HASH_STYLE) -+ -+ $(LIBSA): $(OBJS) mapfile -+- if [ ! -d $(ARCH) ] ; then mkdir $(ARCH) ; fi -++ if [ ! -d $(JDKARCH) ] ; then mkdir $(JDKARCH) ; fi -+ $(GCC) -shared $(LFLAGS_LIBSA) -o $(LIBSA) $(OBJS) $(LIBS) -+ -+ test.o: test.c -+- $(GCC) -c -o test.o -g -D_GNU_SOURCE -D_$(ARCH)_ $(if $(filter $(ARCH),alpha),,-D$(ARCH)) $(INCLUDES) test.c -++ $(GCC) -c -o test.o -g -D_GNU_SOURCE -D_$(JDKARCH)_ $(if $(filter $(JDKARCH),alpha),,-D$(JDKARCH)) $(INCLUDES) test.c -+ -+ test: test.o -+- $(GCC) -o test test.o -L$(ARCH) -lsaproc $(LIBS) -++ $(GCC) -o test test.o -L$(JDKARCH) -lsaproc $(LIBS) -+ -+ clean: -+ rm -rf $(LIBSA) -+ rm -rf $(OBJS) -+- rmdir $(ARCH) -++ rmdir $(JDKARCH) -+ +diff -Nur openjdk-boot.orig/hotspot/make/linux/makefiles/vm.make openjdk-boot/hotspot/make/linux/makefiles/vm.make +--- openjdk-boot.orig/hotspot/make/linux/makefiles/vm.make 2014-02-20 19:51:45.000000000 +0100 ++++ openjdk-boot/hotspot/make/linux/makefiles/vm.make 2014-05-01 20:03:03.677930438 +0200 |