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authorWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
committerWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:04:02 -0600
commite1e46622ac0fce73d802fa4a8a2e83cc25cd9e7a (patch)
tree2c8d14e4dcc733f4227f0984ed05da5826b13acd /libpthread/linuxthreads/attr.c
parent6b6ede3d15f04fe825cfa9f697507457e3640344 (diff)
Revert "resolve merge"
This reverts commit 6b6ede3d15f04fe825cfa9f697507457e3640344.
Diffstat (limited to 'libpthread/linuxthreads/attr.c')
-rw-r--r--libpthread/linuxthreads/attr.c377
1 files changed, 303 insertions, 74 deletions
diff --git a/libpthread/linuxthreads/attr.c b/libpthread/linuxthreads/attr.c
index 8465c234c..a621c2dcc 100644
--- a/libpthread/linuxthreads/attr.c
+++ b/libpthread/linuxthreads/attr.c
@@ -12,82 +12,49 @@
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU Library General Public License for more details. */
-/* changed for uClibc */
-#define __sched_get_priority_min sched_get_priority_min
-#define __sched_get_priority_max sched_get_priority_max
-
/* Handling of thread attributes */
#include <errno.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
+#include <sys/resource.h>
#include "pthread.h"
#include "internals.h"
-libpthread_hidden_proto(pthread_attr_destroy)
-libpthread_hidden_proto(pthread_attr_init)
-libpthread_hidden_proto(pthread_attr_getdetachstate)
-libpthread_hidden_proto(pthread_attr_setdetachstate)
-libpthread_hidden_proto(pthread_attr_getinheritsched)
-libpthread_hidden_proto(pthread_attr_setinheritsched)
-libpthread_hidden_proto(pthread_attr_setschedparam)
-libpthread_hidden_proto(pthread_attr_getschedparam)
-libpthread_hidden_proto(pthread_attr_getschedpolicy)
-libpthread_hidden_proto(pthread_attr_setschedpolicy)
-libpthread_hidden_proto(pthread_attr_getscope)
-libpthread_hidden_proto(pthread_attr_setscope)
-
-/* NOTE: With uClibc I don't think we need this versioning stuff.
- * Therefore, define the function pthread_attr_init() here using
- * a strong symbol. */
-/*int __pthread_attr_init_2_1(pthread_attr_t *attr)*/
-int pthread_attr_init(pthread_attr_t *attr)
+int __pthread_attr_init(pthread_attr_t *attr)
{
- size_t ps = getpagesize ();
+ size_t ps = __getpagesize ();
attr->__detachstate = PTHREAD_CREATE_JOINABLE;
attr->__schedpolicy = SCHED_OTHER;
attr->__schedparam.sched_priority = 0;
attr->__inheritsched = PTHREAD_EXPLICIT_SCHED;
attr->__scope = PTHREAD_SCOPE_SYSTEM;
+#ifdef NEED_SEPARATE_REGISTER_STACK
+ attr->__guardsize = ps + ps;
+#else
attr->__guardsize = ps;
+#endif
attr->__stackaddr = NULL;
attr->__stackaddr_set = 0;
attr->__stacksize = STACK_SIZE - ps;
return 0;
}
-libpthread_hidden_def(pthread_attr_init)
-
-/* uClibc: leave out this for now. */
-#if defined DO_PTHREAD_VERSIONING_WITH_UCLIBC
-#if defined __PIC__ && defined DO_VERSIONING
-default_symbol_version (__pthread_attr_init_2_1, pthread_attr_init, GLIBC_2.1);
-
-int __pthread_attr_init_2_0(pthread_attr_t *attr)
-{
- attr->__detachstate = PTHREAD_CREATE_JOINABLE;
- attr->__schedpolicy = SCHED_OTHER;
- attr->__schedparam.sched_priority = 0;
- attr->__inheritsched = PTHREAD_EXPLICIT_SCHED;
- attr->__scope = PTHREAD_SCOPE_SYSTEM;
- return 0;
-}
-symbol_version (__pthread_attr_init_2_0, pthread_attr_init, GLIBC_2.0);
-#else
-strong_alias (__pthread_attr_init_2_1, pthread_attr_init)
-#endif
-#endif /* DO_PTHREAD_VERSIONING_WITH_UCLIBC */
+strong_alias (__pthread_attr_init, pthread_attr_init)
-int pthread_attr_destroy(pthread_attr_t *attr attribute_unused)
+int __pthread_attr_destroy(pthread_attr_t *attr)
{
return 0;
}
-libpthread_hidden_def(pthread_attr_destroy)
-
+strong_alias (__pthread_attr_destroy, pthread_attr_destroy)
-int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate)
+int __pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate)
{
if (detachstate < PTHREAD_CREATE_JOINABLE ||
detachstate > PTHREAD_CREATE_DETACHED)
@@ -95,17 +62,17 @@ int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate)
attr->__detachstate = detachstate;
return 0;
}
-libpthread_hidden_def(pthread_attr_setdetachstate)
+strong_alias (__pthread_attr_setdetachstate, pthread_attr_setdetachstate)
-int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate)
+int __pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate)
{
*detachstate = attr->__detachstate;
return 0;
}
-libpthread_hidden_def(pthread_attr_getdetachstate)
+strong_alias (__pthread_attr_getdetachstate, pthread_attr_getdetachstate)
-int pthread_attr_setschedparam(pthread_attr_t *attr,
- const struct sched_param *param)
+int __pthread_attr_setschedparam(pthread_attr_t *attr,
+ const struct sched_param *param)
{
int max_prio = __sched_get_priority_max(attr->__schedpolicy);
int min_prio = __sched_get_priority_min(attr->__schedpolicy);
@@ -115,49 +82,49 @@ int pthread_attr_setschedparam(pthread_attr_t *attr,
memcpy (&attr->__schedparam, param, sizeof (struct sched_param));
return 0;
}
-libpthread_hidden_def(pthread_attr_setschedparam)
+strong_alias (__pthread_attr_setschedparam, pthread_attr_setschedparam)
-int pthread_attr_getschedparam(const pthread_attr_t *attr,
- struct sched_param *param)
+int __pthread_attr_getschedparam(const pthread_attr_t *attr,
+ struct sched_param *param)
{
memcpy (param, &attr->__schedparam, sizeof (struct sched_param));
return 0;
}
-libpthread_hidden_def(pthread_attr_getschedparam)
+strong_alias (__pthread_attr_getschedparam, pthread_attr_getschedparam)
-int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
+int __pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
{
if (policy != SCHED_OTHER && policy != SCHED_FIFO && policy != SCHED_RR)
return EINVAL;
attr->__schedpolicy = policy;
return 0;
}
-libpthread_hidden_def(pthread_attr_setschedpolicy)
+strong_alias (__pthread_attr_setschedpolicy, pthread_attr_setschedpolicy)
-int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy)
+int __pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy)
{
*policy = attr->__schedpolicy;
return 0;
}
-libpthread_hidden_def(pthread_attr_getschedpolicy)
+strong_alias (__pthread_attr_getschedpolicy, pthread_attr_getschedpolicy)
-int pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit)
+int __pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit)
{
if (inherit != PTHREAD_INHERIT_SCHED && inherit != PTHREAD_EXPLICIT_SCHED)
return EINVAL;
attr->__inheritsched = inherit;
return 0;
}
-libpthread_hidden_def(pthread_attr_setinheritsched)
+strong_alias (__pthread_attr_setinheritsched, pthread_attr_setinheritsched)
-int pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit)
+int __pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit)
{
*inherit = attr->__inheritsched;
return 0;
}
-libpthread_hidden_def(pthread_attr_getinheritsched)
+strong_alias (__pthread_attr_getinheritsched, pthread_attr_getinheritsched)
-int pthread_attr_setscope(pthread_attr_t *attr, int scope)
+int __pthread_attr_setscope(pthread_attr_t *attr, int scope)
{
switch (scope) {
case PTHREAD_SCOPE_SYSTEM:
@@ -169,22 +136,17 @@ int pthread_attr_setscope(pthread_attr_t *attr, int scope)
return EINVAL;
}
}
-libpthread_hidden_def(pthread_attr_setscope)
+strong_alias (__pthread_attr_setscope, pthread_attr_setscope)
-int pthread_attr_getscope(const pthread_attr_t *attr, int *scope)
+int __pthread_attr_getscope(const pthread_attr_t *attr, int *scope)
{
*scope = attr->__scope;
return 0;
}
-libpthread_hidden_def(pthread_attr_getscope)
+strong_alias (__pthread_attr_getscope, pthread_attr_getscope)
int __pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize)
{
- size_t ps = getpagesize ();
-
- /* First round up the guard size. */
- guardsize = roundup (guardsize, ps);
-
/* The guard size must not be larger than the stack itself */
if (guardsize >= attr->__stacksize) return EINVAL;
@@ -210,6 +172,9 @@ int __pthread_attr_setstackaddr(pthread_attr_t *attr, void *stackaddr)
}
weak_alias (__pthread_attr_setstackaddr, pthread_attr_setstackaddr)
+link_warning (pthread_attr_setstackaddr,
+ "the use of `pthread_attr_setstackaddr' is deprecated, use `pthread_attr_setstack'")
+
int __pthread_attr_getstackaddr(const pthread_attr_t *attr, void **stackaddr)
{
/* XXX This function has a stupid definition. The standard specifies
@@ -219,10 +184,29 @@ int __pthread_attr_getstackaddr(const pthread_attr_t *attr, void **stackaddr)
return 0;
}
weak_alias (__pthread_attr_getstackaddr, pthread_attr_getstackaddr)
+
+link_warning (pthread_attr_getstackaddr,
+ "the use of `pthread_attr_getstackaddr' is deprecated, use `pthread_attr_getstack'")
#endif
+
int __pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize)
{
+#ifdef FLOATING_STACKS
+ /* We have to check against the maximum allowed stack size. This is no
+ problem if the manager is already started and we determined it. If
+ this hasn't happened, we have to find the limit outself. */
+ if (__pthread_max_stacksize == 0)
+ __pthread_init_max_stacksize ();
+
+ if (stacksize > __pthread_max_stacksize)
+ return EINVAL;
+#else
+ /* We have a fixed size limit. */
+ if (stacksize > STACK_SIZE)
+ return EINVAL;
+#endif
+
/* We don't accept value smaller than PTHREAD_STACK_MIN. */
if (stacksize < PTHREAD_STACK_MIN)
return EINVAL;
@@ -230,7 +214,44 @@ int __pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize)
attr->__stacksize = stacksize;
return 0;
}
+
+#if PTHREAD_STACK_MIN == 16384 || defined __UCLIBC__
weak_alias (__pthread_attr_setstacksize, pthread_attr_setstacksize)
+#else
+versioned_symbol (libpthread, __pthread_attr_setstacksize,
+ pthread_attr_setstacksize, GLIBC_2_3_3);
+
+# if SHLIB_COMPAT(libpthread, GLIBC_2_1, GLIBC_2_3_3)
+
+int __old_pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize)
+{
+# ifdef FLOATING_STACKS
+ /* We have to check against the maximum allowed stack size. This is no
+ problem if the manager is already started and we determined it. If
+ this hasn't happened, we have to find the limit outself. */
+ if (__pthread_max_stacksize == 0)
+ __pthread_init_max_stacksize ();
+
+ if (stacksize > __pthread_max_stacksize)
+ return EINVAL;
+# else
+ /* We have a fixed size limit. */
+ if (stacksize > STACK_SIZE)
+ return EINVAL;
+# endif
+
+ /* We don't accept value smaller than old PTHREAD_STACK_MIN. */
+ if (stacksize < 16384)
+ return EINVAL;
+
+ attr->__stacksize = stacksize;
+ return 0;
+}
+compat_symbol (libpthread, __old_pthread_attr_setstacksize,
+ pthread_attr_setstacksize, GLIBC_2_1);
+# endif
+#endif
+
int __pthread_attr_getstacksize(const pthread_attr_t *attr, size_t *stacksize)
{
@@ -238,3 +259,211 @@ int __pthread_attr_getstacksize(const pthread_attr_t *attr, size_t *stacksize)
return 0;
}
weak_alias (__pthread_attr_getstacksize, pthread_attr_getstacksize)
+
+int __pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
+ size_t stacksize)
+{
+ int err;
+
+ if ((((uintptr_t) stackaddr)
+ & (__alignof__ (struct _pthread_descr_struct) - 1)) != 0)
+ err = EINVAL;
+ else
+ err = __pthread_attr_setstacksize (attr, stacksize);
+ if (err == 0)
+ {
+#ifndef _STACK_GROWS_UP
+ attr->__stackaddr = (char *) stackaddr + stacksize;
+#else
+ attr->__stackaddr = stackaddr;
+#endif
+ attr->__stackaddr_set = 1;
+ }
+
+ return err;
+}
+
+#if PTHREAD_STACK_MIN == 16384 || defined __UCLIBC__
+weak_alias (__pthread_attr_setstack, pthread_attr_setstack)
+#else
+versioned_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack,
+ GLIBC_2_3_3);
+# if SHLIB_COMPAT(libpthread, GLIBC_2_2, GLIBC_2_3_3)
+int __old_pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr,
+ size_t stacksize)
+{
+ int err;
+
+ if ((((uintptr_t) stackaddr)
+ & (__alignof__ (struct _pthread_descr_struct) - 1)) != 0)
+ err = EINVAL;
+ else
+ err = __old_pthread_attr_setstacksize (attr, stacksize);
+ if (err == 0)
+ {
+# ifndef _STACK_GROWS_UP
+ attr->__stackaddr = (char *) stackaddr + stacksize;
+# else
+ attr->__stackaddr = stackaddr;
+# endif
+ attr->__stackaddr_set = 1;
+ }
+
+ return err;
+}
+
+compat_symbol (libpthread, __old_pthread_attr_setstack, pthread_attr_setstack,
+ GLIBC_2_2);
+
+# endif
+#endif
+
+int __pthread_attr_getstack (const pthread_attr_t *attr, void **stackaddr,
+ size_t *stacksize)
+{
+ /* XXX This function has a stupid definition. The standard specifies
+ no error value but what is if no stack address was set? We simply
+ return the value we have in the member. */
+#ifndef _STACK_GROWS_UP
+ *stackaddr = (char *) attr->__stackaddr - attr->__stacksize;
+#else
+ *stackaddr = attr->__stackaddr;
+#endif
+ *stacksize = attr->__stacksize;
+ return 0;
+}
+weak_alias (__pthread_attr_getstack, pthread_attr_getstack)
+
+int pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)
+{
+ pthread_handle handle = thread_handle (thread);
+ pthread_descr descr;
+ int ret = 0;
+
+ if (handle == NULL)
+ return ENOENT;
+
+ descr = handle->h_descr;
+
+ attr->__detachstate = (descr->p_detached
+ ? PTHREAD_CREATE_DETACHED
+ : PTHREAD_CREATE_JOINABLE);
+
+ attr->__schedpolicy = __sched_getscheduler (descr->p_pid);
+ if (attr->__schedpolicy == -1)
+ return errno;
+
+ if (__sched_getparam (descr->p_pid,
+ (struct sched_param *) &attr->__schedparam) != 0)
+ return errno;
+
+ attr->__inheritsched = descr->p_inheritsched;
+ attr->__scope = PTHREAD_SCOPE_SYSTEM;
+
+#ifdef _STACK_GROWS_DOWN
+# ifdef __UCLIBC_HAS_TLS__
+ attr->__stacksize = descr->p_stackaddr - (char *)descr->p_guardaddr
+ - descr->p_guardsize;
+# else
+ attr->__stacksize = (char *)(descr + 1) - (char *)descr->p_guardaddr
+ - descr->p_guardsize;
+# endif
+#else
+# ifdef __UCLIBC_HAS_TLS__
+ attr->__stacksize = (char *)descr->p_guardaddr - descr->p_stackaddr;
+# else
+ attr->__stacksize = (char *)descr->p_guardaddr - (char *)descr;
+# endif
+#endif
+ attr->__guardsize = descr->p_guardsize;
+ attr->__stackaddr_set = descr->p_userstack;
+#ifdef NEED_SEPARATE_REGISTER_STACK
+ if (descr->p_userstack == 0)
+ attr->__stacksize *= 2;
+ /* XXX This is awkward. The guard pages are in the middle of the
+ two stacks. We must count the guard size in the stack size since
+ otherwise the range of the stack area cannot be computed. */
+ attr->__stacksize += attr->__guardsize;
+#endif
+#ifdef __UCLIBC_HAS_TLS__
+ attr->__stackaddr = descr->p_stackaddr;
+#else
+# ifndef _STACK_GROWS_UP
+ attr->__stackaddr = (char *)(descr + 1);
+# else
+ attr->__stackaddr = (char *)descr;
+# endif
+#endif
+
+#ifdef __UCLIBC_HAS_TLS__
+ if (attr->__stackaddr == NULL)
+#else
+ if (descr == &__pthread_initial_thread)
+#endif
+ {
+ /* Stack size limit. */
+ struct rlimit rl;
+
+ /* The safest way to get the top of the stack is to read
+ /proc/self/maps and locate the line into which
+ __libc_stack_end falls. */
+ FILE *fp = fopen ("/proc/self/maps", "rc");
+ if (fp == NULL)
+ ret = errno;
+ /* We need the limit of the stack in any case. */
+ else if (getrlimit (RLIMIT_STACK, &rl) != 0)
+ ret = errno;
+ else
+ {
+ /* We need no locking. */
+ __fsetlocking (fp, FSETLOCKING_BYCALLER);
+
+ /* Until we found an entry (which should always be the case)
+ mark the result as a failure. */
+ ret = ENOENT;
+
+ char *line = NULL;
+ size_t linelen = 0;
+ uintptr_t last_to = 0;
+
+ while (! feof_unlocked (fp))
+ {
+ if (getdelim (&line, &linelen, '\n', fp) <= 0)
+ break;
+
+ uintptr_t from;
+ uintptr_t to;
+ if (sscanf (line, "%" SCNxPTR "-%" SCNxPTR, &from, &to) != 2)
+ continue;
+ if (from <= (uintptr_t) __libc_stack_end
+ && (uintptr_t) __libc_stack_end < to)
+ {
+ /* Found the entry. Now we have the info we need. */
+ attr->__stacksize = rl.rlim_cur;
+#ifdef _STACK_GROWS_UP
+ /* Don't check to enforce a limit on the __stacksize */
+ attr->__stackaddr = (void *) from;
+#else
+ attr->__stackaddr = (void *) to;
+
+ /* The limit might be too high. */
+ if ((size_t) attr->__stacksize
+ > (size_t) attr->__stackaddr - last_to)
+ attr->__stacksize = (size_t) attr->__stackaddr - last_to;
+#endif
+
+ /* We succeed and no need to look further. */
+ ret = 0;
+ break;
+ }
+ last_to = to;
+ }
+
+ fclose (fp);
+ free (line);
+ }
+ }
+
+ return 0;
+
+}