diff options
Diffstat (limited to 'libpthread/sysdeps/generic/sem-timedwait.c')
-rw-r--r-- | libpthread/sysdeps/generic/sem-timedwait.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/libpthread/sysdeps/generic/sem-timedwait.c b/libpthread/sysdeps/generic/sem-timedwait.c deleted file mode 100644 index e34539a9..00000000 --- a/libpthread/sysdeps/generic/sem-timedwait.c +++ /dev/null @@ -1,91 +0,0 @@ -/* Wait on a semaphore with a timeout. Generic version. - Copyright (C) 2005, 2006, 2008 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 <semaphore.h> -#include <errno.h> -#include <assert.h> - -#include <pt-internal.h> - -int -__sem_timedwait_internal (sem_t *restrict sem, - const struct timespec *restrict timeout) -{ - struct __pthread *self; - - __pthread_spin_lock (&sem->__lock); - if (sem->__value > 0) - /* Successful down. */ - { - sem->__value --; - __pthread_spin_unlock (&sem->__lock); - return 0; - } - - if (timeout && (timeout->tv_nsec < 0 || timeout->tv_nsec >= 1000000000)) - { - errno = EINVAL; - return -1; - } - - /* Add ourselves to the queue. */ - self = _pthread_self (); - - __pthread_enqueue (&sem->__queue, self); - __pthread_spin_unlock (&sem->__lock); - - /* Block the thread. */ - if (timeout) - { - error_t err; - - err = __pthread_timedblock (self, timeout); - if (err) - /* We timed out. We may need to disconnect ourself from the - waiter queue. - - FIXME: What do we do if we get a wakeup message before we - disconnect ourself? It may remain until the next time we - block. */ - { - assert (err == ETIMEDOUT); - - __pthread_spin_lock (&sem->__lock); - if (self->prevp) - __pthread_dequeue (self); - __pthread_spin_unlock (&sem->__lock); - - errno = err; - return -1; - } - } - else - __pthread_block (self); - - return 0; -} - -int -__sem_timedwait (sem_t *restrict sem, - const struct timespec *restrict timeout) -{ - return __sem_timedwait_internal (sem, timeout); -} - -strong_alias (__sem_timedwait, sem_timedwait); |