mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
|
|
|
|
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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include "pthreadP.h"
|
|
|
|
int
|
|
pthread_spin_trylock (pthread_spinlock_t *lock)
|
|
{
|
|
int old;
|
|
|
|
__asm__ __volatile__ ("cs %0,%3,%1"
|
|
: "=d" (old), "=Q" (*lock)
|
|
: "0" (0), "d" (1), "m" (*lock) : "cc" );
|
|
|
|
return old != 0 ? EBUSY : 0;
|
|
}
|