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+/* Mutex type. Generic version.
+
+ Copyright (C) 2000, 2002, 2005, 2006, 2007, 2008, 2009
+ 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. */
+
+#ifndef _BITS_MUTEX_H
+
+#ifndef __need_pthread_mutex
+# define _BITS_MUTEX_H 1
+#endif
+
+#ifndef __pthread_mutex_defined
+# if defined __need_pthread_mutex || defined _BITS_MUTEX_H
+# undef __need_pthread_mutex
+# define __pthread_mutex_defined
+
+# include <bits/spin-lock.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
+#endif /* Not __pthread_mutex_defined. */
+
+#endif /* bits/mutex.h */