diff options
Diffstat (limited to 'pthreads/src/pthread_spin_lock.c')
-rw-r--r-- | pthreads/src/pthread_spin_lock.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/pthreads/src/pthread_spin_lock.c b/pthreads/src/pthread_spin_lock.c deleted file mode 100644 index b560e14..0000000 --- a/pthreads/src/pthread_spin_lock.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * pthread_spin_lock.c - * - * Description: - * This translation unit implements spin lock primitives. - * - * -------------------------------------------------------------------------- - * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2005 Pthreads-win32 contributors - * - * Contact Email: rpj@callisto.canberra.edu.au - * - * The current list of contributors is contained - * in the file CONTRIBUTORS included with the source - * code distribution. The list can also be seen at the - * following World Wide Web location: - * http://sources.redhat.com/pthreads-win32/contributors.html - * - * This 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 of the License, or (at your option) any later version. - * - * This 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 this library in 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 "implement.h" - - -int -pthread_spin_lock (pthread_spinlock_t * lock) -{ - register pthread_spinlock_t s; - - if (NULL == lock || NULL == *lock) - { - return (EINVAL); - } - - if (*lock == PTHREAD_SPINLOCK_INITIALIZER) - { - int result; - - if ((result = ptw32_spinlock_check_need_init (lock)) != 0) - { - return (result); - } - } - - s = *lock; - - while ((PTW32_INTERLOCKED_LONG) PTW32_SPIN_LOCKED == - PTW32_INTERLOCKED_COMPARE_EXCHANGE_LONG ((PTW32_INTERLOCKED_LONGPTR) &s->interlock, - (PTW32_INTERLOCKED_LONG) PTW32_SPIN_LOCKED, - (PTW32_INTERLOCKED_LONG) PTW32_SPIN_UNLOCKED)) - { - } - - if (s->interlock == PTW32_SPIN_LOCKED) - { - return 0; - } - else if (s->interlock == PTW32_SPIN_USE_MUTEX) - { - return pthread_mutex_lock (&(s->u.mutex)); - } - - return EINVAL; -} |