diff options
Diffstat (limited to 'libpthread/sysdeps/posix/pt-spin.c')
-rw-r--r-- | libpthread/sysdeps/posix/pt-spin.c | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/libpthread/sysdeps/posix/pt-spin.c b/libpthread/sysdeps/posix/pt-spin.c deleted file mode 100644 index cb809c64..00000000 --- a/libpthread/sysdeps/posix/pt-spin.c +++ /dev/null @@ -1,54 +0,0 @@ -/* Spin locks. - Copyright (C) 2000, 2004, 2005 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <pthread.h> -#include <sched.h> - -/* The default for single processor machines; don't spin, it's - pointless. */ -#ifndef __PTHREAD_SPIN_COUNT -# define __PTHREAD_SPIN_COUNT 1 -#endif - -/* The number of times to spin while trying to lock a spin lock object - before yielding the processor. */ -int __pthread_spin_count = __PTHREAD_SPIN_COUNT; - - -/* Lock the spin lock object LOCK. If the lock is held by another - thread spin until it becomes available. */ -int -_pthread_spin_lock (__pthread_spinlock_t *lock) -{ - int i; - - while (1) - { - for (i = 0; i < __pthread_spin_count; i++) - { - if (__pthread_spin_trylock (lock) == 0) - return 0; - } - - __sched_yield (); - } -} - -weak_alias (_pthread_spin_lock, pthread_spin_lock); -weak_alias (_pthread_spin_lock, __pthread_spin_lock); |