summaryrefslogtreecommitdiff
path: root/libpthread/sysdeps/generic/pt-rwlock-timedwrlock.c
diff options
context:
space:
mode:
Diffstat (limited to 'libpthread/sysdeps/generic/pt-rwlock-timedwrlock.c')
-rw-r--r--libpthread/sysdeps/generic/pt-rwlock-timedwrlock.c95
1 files changed, 0 insertions, 95 deletions
diff --git a/libpthread/sysdeps/generic/pt-rwlock-timedwrlock.c b/libpthread/sysdeps/generic/pt-rwlock-timedwrlock.c
deleted file mode 100644
index 04eab51f..00000000
--- a/libpthread/sysdeps/generic/pt-rwlock-timedwrlock.c
+++ /dev/null
@@ -1,95 +0,0 @@
-/* Acquire a rwlock for writing. Generic version.
- Copyright (C) 2002, 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 <assert.h>
-
-#include <pt-internal.h>
-
-/* Acquire RWLOCK for writing blocking until *ABSTIME if we cannot get
- it. As a special GNU extension, if ABSTIME is NULL then the wait
- shall not time out. */
-int
-__pthread_rwlock_timedwrlock_internal (struct __pthread_rwlock *rwlock,
- const struct timespec *abstime)
-{
- struct __pthread *self;
-
- __pthread_spin_lock (&rwlock->__lock);
- if (__pthread_spin_trylock (&rwlock->__held) == 0)
- /* Successfully acquired the lock. */
- {
- assert (rwlock->readerqueue == 0);
- assert (rwlock->writerqueue == 0);
- assert (rwlock->readers == 0);
-
- __pthread_spin_unlock (&rwlock->__lock);
- return 0;
- }
-
- /* The lock is busy. */
-
- if (abstime && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
- return EINVAL;
-
- self = _pthread_self ();
-
- /* Add ourselves to the queue. */
- __pthread_enqueue (&rwlock->writerqueue, self);
- __pthread_spin_unlock (&rwlock->__lock);
-
- /* Block the thread. */
- if (abstime)
- {
- error_t err;
-
- err = __pthread_timedblock (self, abstime);
- 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 (&rwlock->__lock);
- if (self->prevp)
- /* Disconnect ourself. */
- __pthread_dequeue (self);
- __pthread_spin_unlock (&rwlock->__lock);
-
- return err;
- }
- }
- else
- __pthread_block (self);
-
- assert (rwlock->readers == 0);
-
- return 0;
-}
-
-int
-pthread_rwlock_timedwrlock (struct __pthread_rwlock *rwlock,
- const struct timespec *abstime)
-{
- return __pthread_rwlock_timedwrlock_internal (rwlock, abstime);
-}