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/* Mutex type. Generic version.
Copyright (C) 2000-2018 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, see <http://www.gnu.org/licenses/>. */
#ifndef _BITS_MUTEX_H
#define _BITS_MUTEX_H 1
#include <bits/types/__pthread_spinlock_t.h>
#include <bits/mutex-attr.h>
/* User visible part of a mutex. */
struct __pthread_mutex
{
__pthread_spinlock_t __held;
__pthread_spinlock_t __lock;
/* In cthreads, mutex_init does not initialized thre third
pointer, as such, we cannot rely on its value for anything. */
char *__cthreadscompat1;
struct __pthread *__queue;
struct __pthread_mutexattr *__attr;
void *__data;
/* Up to this point, we are completely compatible with cthreads
and what libc expects. */
void *__owner;
unsigned __locks;
/* If NULL then the default attributes apply. */
};
/* Initializer for a mutex. N.B. this also happens to be compatible
with the cthread mutex initializer. */
#define __PTHREAD_MUTEX_INITIALIZER \
{ __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, 0, 0, 0, 0 }
#define __PTHREAD_ERRORCHECK_MUTEXATTR ((struct __pthread_mutexattr *) ((unsigned long) __PTHREAD_MUTEX_ERRORCHECK + 1))
#define __PTHREAD_ERRORCHECK_MUTEX_INITIALIZER \
{ __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, \
__PTHREAD_ERRORCHECK_MUTEXATTR, 0, 0, 0 }
#define __PTHREAD_RECURSIVE_MUTEXATTR ((struct __pthread_mutexattr *) ((unsigned long) __PTHREAD_MUTEX_RECURSIVE + 1))
#define __PTHREAD_RECURSIVE_MUTEX_INITIALIZER \
{ __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, \
__PTHREAD_RECURSIVE_MUTEXATTR, 0, 0, 0 }
#endif /* bits/mutex.h */
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