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2005-05-19 Richard Henderson <rth@redhat.com> * sysdeps/unix/clock_gettime.c (clock_gettime): Fix typo around CLOCK_REALTIME. * sysdeps/ia64/bits/atomic.h (__arch_compare_and_exchange_bool_32_acq, __arch_compare_and_exchange_bool_64_acq, __arch_compare_and_exchange_val_32_acq, __arch_compare_and_exchange_val_64_acq, atomic_exchange_and_add): Use __sync builtin without _si or _di suffix. 2005-05-19 Jakub Jelinek <jakub@redhat.com> [BZ #955] * iconvdata/ibm939.c (BODY): Avoid segfaults with input characters <UFFFF> and above. 2005-05-17 Andreas Schwab <schwab@suse.de> * sysdeps/unix/sysv/linux/clock_getcpuclockid.c (clock_getcpuclockid): Always return a defined value.
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "pthreadP.h"
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int
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pthread_spin_lock (lock)
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pthread_spinlock_t *lock;
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{
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int *p = (int *) lock;
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while (__builtin_expect (__sync_val_compare_and_swap (p, 0, 1), 0))
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{
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/* Spin without using the atomic instruction. */
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do
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__asm __volatile ("hint @pause" : : : "memory");
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while (*p);
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}
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return 0;
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}
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