mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 18:40:14 +00:00
9a7178d611
2003-05-01 Ulrich Drepper <drepper@redhat.com> * sysdeps/i386/tls.h: Define THREAD_ID. * sysdeps/ia64/tls.h: Likewise. * sysdeps/powerpc/tls.h: Likewise. * sysdeps/s390/tls.h: Likewise. * sysdeps/sh/tls.h: Likewise. * sysdeps/x86_64/tls.h: Likewise. * pthread_mutex_lock.c: Use THREAD_ID instead of THREAD_SELF to record ownership. * pthread_mutex_timedlock.c: Likewise. * pthread_mutex_trylock.c: Likewise. * pthread_mutex_unlock.c: Likewise. * pthread_rwlock_trywrlock.c: Likewise. * sysdeps/pthread/pthread_rwlocklock_rdlock.c: Likewise. * sysdeps/pthread/pthread_rwlock_timedrdlock.c: Likewise. * sysdeps/pthread/pthread_rwlock_timedwrlock.c: Likewise. * sysdeps/pthread/pthread_rwlock_wrlock.c: Likewise. * sysdeps/pthread/createthread.c (create_thread): Use CLONE_SYSVSEM flag.
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include "pthreadP.h"
|
|
#include <lowlevellock.h>
|
|
|
|
|
|
int
|
|
__pthread_mutex_unlock (mutex)
|
|
pthread_mutex_t *mutex;
|
|
{
|
|
switch (__builtin_expect (mutex->__data.__kind, PTHREAD_MUTEX_TIMED_NP))
|
|
{
|
|
case PTHREAD_MUTEX_RECURSIVE_NP:
|
|
/* Recursive mutex. */
|
|
if (mutex->__data.__owner != THREAD_ID)
|
|
return EPERM;
|
|
|
|
if (--mutex->__data.__count != 0)
|
|
/* We still hold the mutex. */
|
|
return 0;
|
|
break;
|
|
|
|
case PTHREAD_MUTEX_ERRORCHECK_NP:
|
|
/* Error checking mutex. */
|
|
if (mutex->__data.__owner != THREAD_ID
|
|
|| ! lll_mutex_islocked (mutex->__data.__lock))
|
|
return EPERM;
|
|
break;
|
|
|
|
default:
|
|
/* Correct code cannot set any other type. */
|
|
case PTHREAD_MUTEX_TIMED_NP:
|
|
case PTHREAD_MUTEX_ADAPTIVE_NP:
|
|
/* Normal mutex. Nothing special to do. */
|
|
break;
|
|
}
|
|
|
|
/* Always reset the owner field. */
|
|
mutex->__data.__owner = NULL;
|
|
|
|
/* Unlock. */
|
|
lll_mutex_unlock (mutex->__data.__lock);
|
|
|
|
return 0;
|
|
}
|
|
strong_alias (__pthread_mutex_unlock, pthread_mutex_unlock)
|
|
strong_alias (__pthread_mutex_unlock, __pthread_mutex_unlock_internal)
|