mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 19:00:09 +00:00
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
|
/* Copyright (C) 2002 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 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
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with the GNU C Library; if not, write to the Free
|
||
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||
|
|
02111-1307 USA. */
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
#include <pthreadP.h>
|
||
|
|
|
||
|
|
|
||
|
|
int
|
||
|
|
pthread_mutexattr_setpshared (attr, pshared)
|
||
|
|
pthread_mutexattr_t *attr;
|
||
|
|
int pshared;
|
||
|
|
{
|
||
|
|
struct pthread_mutexattr *iattr;
|
||
|
|
|
||
|
|
if (pshared != PTHREAD_PROCESS_PRIVATE
|
||
|
|
&& __builtin_expect (pshared != PTHREAD_PROCESS_SHARED, 0))
|
||
|
|
return EINVAL;
|
||
|
|
|
||
|
|
iattr = (struct pthread_mutexattr *) attr;
|
||
|
|
|
||
|
|
/* We use bit 31 to single whether the mutex is going to be
|
||
|
|
process-shared or not. */
|
||
|
|
if (pshared == PTHREAD_PROCESS_PRIVATE)
|
||
|
|
iattr->mutexkind &= ~0x80000000;
|
||
|
|
else
|
||
|
|
iattr->mutexkind |= 0x80000000;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|