63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/* Mutex type. Generic version.
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Copyright (C) 2000-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifndef _BITS_TYPES_STRUCT___PTHREAD_MUTEX_H
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#define _BITS_TYPES_STRUCT___PTHREAD_MUTEX_H 1
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#include <bits/types/__pthread_spinlock_t.h>
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#include <bits/types/struct___pthread_mutexattr.h>
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/* User visible part of a mutex. */
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struct __pthread_mutex
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{
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__pthread_spinlock_t __held;
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__pthread_spinlock_t __lock;
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/* In cthreads, mutex_init does not initialized thre third
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pointer, as such, we cannot rely on its value for anything. */
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char *__cthreadscompat1;
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struct __pthread *__queue;
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struct __pthread_mutexattr *__attr;
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void *__data;
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/* Up to this point, we are completely compatible with cthreads
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and what libc expects. */
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void *__owner;
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unsigned __locks;
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/* If NULL then the default attributes apply. */
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};
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/* Initializer for a mutex. N.B. this also happens to be compatible
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with the cthread mutex initializer. */
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#define __PTHREAD_MUTEX_INITIALIZER \
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{ __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, 0, 0, 0, 0 }
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#define __PTHREAD_ERRORCHECK_MUTEXATTR ((struct __pthread_mutexattr *) ((unsigned long) __PTHREAD_MUTEX_ERRORCHECK + 1))
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#define __PTHREAD_ERRORCHECK_MUTEX_INITIALIZER \
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{ __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, \
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__PTHREAD_ERRORCHECK_MUTEXATTR, 0, 0, 0 }
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#define __PTHREAD_RECURSIVE_MUTEXATTR ((struct __pthread_mutexattr *) ((unsigned long) __PTHREAD_MUTEX_RECURSIVE + 1))
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#define __PTHREAD_RECURSIVE_MUTEX_INITIALIZER \
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{ __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, \
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__PTHREAD_RECURSIVE_MUTEXATTR, 0, 0, 0 }
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#endif /* bits/types/struct___pthread_mutex.h */
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