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author | Roland McGrath <roland@gnu.org> | 2003-03-11 09:30:37 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2003-03-11 09:30:37 +0000 |
commit | b33e61633a10a233510f6f49b97b7e2ad15c7311 (patch) | |
tree | 9b6025b692435f629bc771dca74dcfb48e41768a /nptl/sysdeps/ia64/pthread_spin_trylock.c | |
parent | 5d5d5969b17422e3b1af6f88436e91f32a36fd58 (diff) | |
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* sysdeps/generic/dl-sysdep.c (_dl_important_hwcaps): If CNT == 1,
allocate space even for the trailing '/'.
Reported by John Reiser <jreiser@BitWagon.com>.
* sysdeps/unix/sysv/linux/ia64/sysdep.h (LOAD_ARGS_6, ASM_ARGS_6,
ASM_CLOBBERS_6): Define.
(ASM_CLOBBERS_5): Use ASM_CLOBBERS_6.
* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Reorder arguments
to match IA-32 order.
* sysdeps/unix/sysv/linux/i386/clone.S: Fix comment.
Diffstat (limited to 'nptl/sysdeps/ia64/pthread_spin_trylock.c')
-rw-r--r-- | nptl/sysdeps/ia64/pthread_spin_trylock.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/nptl/sysdeps/ia64/pthread_spin_trylock.c b/nptl/sysdeps/ia64/pthread_spin_trylock.c new file mode 100644 index 0000000000..b7cbf14782 --- /dev/null +++ b/nptl/sysdeps/ia64/pthread_spin_trylock.c @@ -0,0 +1,28 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.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, 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_spin_trylock (lock) + pthread_spinlock_t *lock; +{ + return __sync_val_compare_and_swap_si ((int *) lock, 0, 1) == 0 ? 0 : EBUSY; +} |