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glibc  2.9
pthread_mutexattr_init.c
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00001 /* Copyright (C) 2002 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <string.h>
00021 #include <pthreadP.h>
00022 
00023 
00024 int
00025 __pthread_mutexattr_init (attr)
00026      pthread_mutexattr_t *attr;
00027 {
00028   if (sizeof (struct pthread_mutexattr) != sizeof (pthread_mutexattr_t))
00029     memset (attr, '\0', sizeof (*attr));
00030 
00031   /* We use bit 31 to signal whether the mutex is going to be
00032      process-shared or not.  By default it is zero, i.e., the mutex is
00033      not process-shared.  */
00034   ((struct pthread_mutexattr *) attr)->mutexkind = PTHREAD_MUTEX_NORMAL;
00035 
00036   return 0;
00037 }
00038 strong_alias (__pthread_mutexattr_init, pthread_mutexattr_init)