diff options
Diffstat (limited to 'package/openjdk7/patches/openadk.patch')
| -rw-r--r-- | package/openjdk7/patches/openadk.patch | 6389 |
1 files changed, 30 insertions, 6359 deletions
diff --git a/package/openjdk7/patches/openadk.patch b/package/openjdk7/patches/openadk.patch index 601640a92..16f4fae8c 100644 --- a/package/openjdk7/patches/openadk.patch +++ b/package/openjdk7/patches/openadk.patch @@ -1,6 +1,6 @@ diff -Nur icedtea-2.4.7.orig/Makefile.in icedtea-2.4.7/Makefile.in --- icedtea-2.4.7.orig/Makefile.in 2014-04-16 06:20:44.689988653 +0200 -+++ icedtea-2.4.7/Makefile.in 2014-05-01 13:34:58.421434811 +0200 ++++ icedtea-2.4.7/Makefile.in 2014-06-17 17:37:10.283965087 +0200 @@ -712,7 +712,7 @@ $(am__append_14) $(am__append_15) $(DISTRIBUTION_PATCHES) @@ -12,11 +12,11 @@ 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 2014-05-15 15:52:54.503242117 +0200 -@@ -0,0 +1,7020 @@ ++++ icedtea-2.4.7/patches/openadk.patch 2014-06-17 17:42:10.926234673 +0200 +@@ -0,0 +1,691 @@ +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 +++++ openjdk/hotspot/make/linux/makefiles/zeroshark.make 2014-06-17 17:39:28.697018938 +0200 +@@ -39,20 +39,20 @@ + + offsets_arm.s: mkoffsets @@ -44,7 +44,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + 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 2014-02-20 19:51:45.000000000 +0100 -++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp 2014-05-13 16:14:56.637091447 +0200 +++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp 2014-06-17 17:39:28.701018968 +0200 +@@ -112,7 +112,6 @@ + # include <string.h> + # include <syscall.h> @@ -99,6002 +99,9 @@ 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 2014-02-20 19:51:45.000000000 +0100 -++++ openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-05-13 16:14:56.641091455 +0200 +++++ openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-06-17 17:39:28.705018998 +0200 +@@ -253,7 +253,7 @@ + #elif defined(__APPLE__) + inline int g_isnan(double f) { return isnan(f); } @@ -6117,7 +124,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/com/sun/java/pack/Makefile 2014-05-13 16:14:56.641091455 +0200 +++++ openjdk/jdk/make/com/sun/java/pack/Makefile 2014-06-17 17:39:28.705018998 +0200 +@@ -79,7 +79,7 @@ + OTHER_CXXFLAGS += $(ZLIB_CFLAGS) -DSYSTEM_ZLIB + endif @@ -6129,7 +136,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + +diff -Nur openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile openjdk/jdk/make/com/sun/nio/sctp/Makefile +--- openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/com/sun/nio/sctp/Makefile 2014-05-13 16:14:56.641091455 +0200 +++++ openjdk/jdk/make/com/sun/nio/sctp/Makefile 2014-06-17 17:39:28.705018998 +0200 +@@ -64,7 +64,7 @@ + COMPILER_WARNINGS_FATAL=true + endif @@ -6141,7 +148,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + #LIBSCTP = -lsctp +diff -Nur openjdk.orig/jdk/make/common/Defs.gmk openjdk/jdk/make/common/Defs.gmk +--- openjdk.orig/jdk/make/common/Defs.gmk 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/common/Defs.gmk 2014-05-13 16:14:56.641091455 +0200 +++++ openjdk/jdk/make/common/Defs.gmk 2014-06-17 17:39:28.705018998 +0200 +@@ -204,7 +204,7 @@ + ifeq ($(PLATFORM), macosx) + FREETYPE_HEADERS_PATH = /usr/X11R6/include @@ -6153,7 +160,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + endif +diff -Nur openjdk.orig/jdk/make/common/Sanity.gmk openjdk/jdk/make/common/Sanity.gmk +--- 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 +++++ openjdk/jdk/make/common/Sanity.gmk 2014-06-17 17:39:28.705018998 +0200 +@@ -91,8 +91,7 @@ + sane-ld_run_path \ + sane-alt_bootdir \ @@ -6166,7 +173,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/common/shared/Platform.gmk 2014-05-13 16:14:56.641091455 +0200 +++++ openjdk/jdk/make/common/shared/Platform.gmk 2014-06-17 17:39:28.705018998 +0200 +@@ -160,9 +160,6 @@ + else + mach := $(shell uname -m) @@ -6179,7 +186,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/common/shared/Sanity.gmk 2014-05-13 16:14:56.641091455 +0200 +++++ openjdk/jdk/make/common/shared/Sanity.gmk 2014-06-17 17:39:28.705018998 +0200 +@@ -114,11 +114,6 @@ + elif [ -f /etc/lsb-release ] ; then \ + $(EGREP) DISTRIB_RELEASE /etc/lsb-release | $(SED) -e 's@.*DISTRIB_RELEASE=\(.*\)@\1@'; \ @@ -6235,21 +242,9 @@ 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 2014-04-12 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= -+ -++OTHER_LDLIBS += -liconv -++ -+ # -+ # 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/java/net/Makefile 2014-05-13 16:14:56.641091455 +0200 +++++ openjdk/jdk/make/java/net/Makefile 2014-06-17 17:39:28.709019029 +0200 +@@ -25,7 +25,7 @@ + + BUILDDIR = ../.. @@ -6261,7 +256,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + +diff -Nur openjdk.orig/jdk/make/java/nio/Makefile openjdk/jdk/make/java/nio/Makefile +--- 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 +++++ openjdk/jdk/make/java/nio/Makefile 2014-06-17 17:39:28.709019029 +0200 +@@ -373,7 +373,7 @@ + endif + @@ -6289,21 +284,9 @@ 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)-$(ARCH).java -+diff -Nur openjdk.orig/jdk/make/java/npt/Makefile openjdk/jdk/make/java/npt/Makefile -+--- openjdk.orig/jdk/make/java/npt/Makefile 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/java/npt/Makefile 2014-05-13 16:14:56.645091463 +0200 -+@@ -64,6 +64,8 @@ -+ # We don't want to link against -ljava -+ JAVALIB= -+ -++OTHER_LDLIBS += -liconv -++ -+ # Add -export options to explicitly spell exported symbols -+ ifeq ($(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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/sun/awt/mawt.gmk 2014-05-13 16:14:56.645091463 +0200 +++++ openjdk/jdk/make/sun/awt/mawt.gmk 2014-06-17 17:39:28.709019029 +0200 +@@ -151,22 +151,6 @@ + #endif + @@ -6360,322 +343,9 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/sun/splashscreen/Makefile 2014-05-13 16:14:56.645091463 +0200 -+@@ -55,6 +55,8 @@ -+ -+ JAVALIB= -+ -++OTHER_LDLIBS += -liconv -++ -+ # -+ # C Flags -+ # +diff -Nur openjdk.orig/jdk/make/sun/xawt/Makefile openjdk/jdk/make/sun/xawt/Makefile +--- openjdk.orig/jdk/make/sun/xawt/Makefile 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/make/sun/xawt/Makefile 2014-05-13 16:14:56.645091463 +0200 +++++ openjdk/jdk/make/sun/xawt/Makefile 2014-06-17 17:39:28.709019029 +0200 +@@ -292,16 +292,10 @@ + SIZERS = $(SIZER).32 + SIZERS_C = $(SIZER_32_C) @@ -6717,7 +387,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + $(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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-05-13 16:14:56.645091463 +0200 +++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-06-17 17:39:28.709019029 +0200 +@@ -69,7 +69,7 @@ + */ + static { @@ -6729,7 +399,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-05-13 16:14:56.645091463 +0200 +++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-06-17 17:39:28.709019029 +0200 +@@ -78,7 +78,7 @@ + */ + static { @@ -6741,7 +411,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/java/net/DatagramPacket.java 2014-05-13 16:14:56.645091463 +0200 +++++ openjdk/jdk/src/share/classes/java/net/DatagramPacket.java 2014-06-17 17:39:28.709019029 +0200 +@@ -47,7 +47,7 @@ + */ + static { @@ -6753,7 +423,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/java/net/InetAddress.java 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/share/classes/java/net/InetAddress.java 2014-06-17 17:39:28.709019029 +0200 +@@ -267,7 +267,7 @@ + static { + preferIPv6Address = java.security.AccessController.doPrivileged( @@ -6765,7 +435,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/java/net/NetworkInterface.java 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/share/classes/java/net/NetworkInterface.java 2014-06-17 17:39:28.709019029 +0200 +@@ -53,7 +53,7 @@ + private static final int defaultIndex; /* index of defaultInterface */ + @@ -6777,7 +447,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-06-17 17:39:28.709019029 +0200 +@@ -76,6 +76,6 @@ + + static { @@ -6788,7 +458,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-06-17 17:39:28.709019029 +0200 +@@ -95,7 +95,7 @@ + }}); + if (b != null && b.booleanValue()) { @@ -6800,7 +470,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/share/classes/sun/nio/ch/Util.java 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/share/classes/sun/nio/ch/Util.java 2014-06-17 17:39:28.709019029 +0200 +@@ -483,7 +483,7 @@ + return; + loaded = true; @@ -6812,7 +482,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + // 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-06-17 17:39:28.713019059 +0200 +@@ -247,7 +247,7 @@ + + static { @@ -6824,7 +494,7 @@ 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-06-17 17:39:28.713019059 +0200 +@@ -246,7 +246,8 @@ + if (wcs == NULL) + return NULL; @@ -6837,7 +507,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-06-17 17:39:28.713019059 +0200 +@@ -27,9 +27,6 @@ + #include <X11/Xutil.h> + #include <X11/Xos.h> @@ -6876,7 +546,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + 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 2014-04-12 01:23:06.000000000 +0200 -++++ openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-06-17 17:39:28.713019059 +0200 +@@ -159,7 +159,7 @@ + + static { @@ -6888,7 +558,7 @@ 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 2014-04-04 19:44:40.000000000 +0200 -++++ openjdk/Makefile 2014-05-13 16:14:56.649091471 +0200 +++++ openjdk/Makefile 2014-06-17 17:39:28.713019059 +0200 +@@ -53,9 +53,7 @@ + REL_JDK_DEBUG_IMAGE_DIR = ../$(OUTPUTDIR_BASENAME-debug)/$(JDK_IMAGE_DIRNAME) + REL_JDK_FASTDEBUG_IMAGE_DIR = ../$(OUTPUTDIR_BASENAME-fastdebug)/$(JDK_IMAGE_DIRNAME) @@ -7034,3 +704,4 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk + + ifndef JDK_TOPDIR + JDK_TOPDIR=$(TOPDIR)/jdk ++ |