diff options
Diffstat (limited to 'libpthread/sysdeps/generic/pt-mutex-unlock.c')
-rw-r--r-- | libpthread/sysdeps/generic/pt-mutex-unlock.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/libpthread/sysdeps/generic/pt-mutex-unlock.c b/libpthread/sysdeps/generic/pt-mutex-unlock.c deleted file mode 100644 index 09d70f8f..00000000 --- a/libpthread/sysdeps/generic/pt-mutex-unlock.c +++ /dev/null @@ -1,108 +0,0 @@ -/* Unlock a mutex. Generic version. - Copyright (C) 2000, 2002, 2008 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <pthread.h> - -#include <pt-internal.h> - -#define LOSE do { * (int *) 0 = 0; } while (1) - -/* Unlock MUTEX, rescheduling a waiting thread. */ -int -__pthread_mutex_unlock (pthread_mutex_t *mutex) -{ - struct __pthread *wakeup; - const struct __pthread_mutexattr *attr = mutex->attr; - - if (attr == __PTHREAD_ERRORCHECK_MUTEXATTR) - attr = &__pthread_errorcheck_mutexattr; - if (attr == __PTHREAD_RECURSIVE_MUTEXATTR) - attr = &__pthread_recursive_mutexattr; - - __pthread_spin_lock (&mutex->__lock); - - if (! attr || attr->mutex_type == PTHREAD_MUTEX_NORMAL) - { -#if defined(ALWAYS_TRACK_MUTEX_OWNER) -# ifndef NDEBUG - if (_pthread_self ()) - { - assert (mutex->owner); - assert (mutex->owner == _pthread_self ()); - mutex->owner = NULL; - } -# endif -#endif - } - else - switch (attr->mutex_type) - { - case PTHREAD_MUTEX_ERRORCHECK: - case PTHREAD_MUTEX_RECURSIVE: - if (mutex->owner != _pthread_self ()) - { - __pthread_spin_unlock (&mutex->__lock); - return EPERM; - } - - if (attr->mutex_type == PTHREAD_MUTEX_RECURSIVE) - if (--mutex->locks > 0) - { - __pthread_spin_unlock (&mutex->__lock); - return 0; - } - - mutex->owner = 0; - break; - - default: - LOSE; - } - - - if (mutex->__queue == NULL) - { - __pthread_spin_unlock (&mutex->__held); - __pthread_spin_unlock (&mutex->__lock); - return 0; - } - - wakeup = mutex->__queue; - __pthread_dequeue (wakeup); - -#ifndef NDEBUG -# if !defined (ALWAYS_TRACK_MUTEX_OWNER) - if (attr && attr->mutex_type != PTHREAD_MUTEX_NORMAL) -# endif - { - mutex->owner = wakeup; - } -#endif - - /* We do not unlock MUTEX->held: we are transferring the ownership - to the thread that we are waking up. */ - - __pthread_spin_unlock (&mutex->__lock); - __pthread_wakeup (wakeup); - - return 0; -} - -strong_alias (__pthread_mutex_unlock, _pthread_mutex_unlock); -strong_alias (__pthread_mutex_unlock, pthread_mutex_unlock); |