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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "locks.h"
#if APR_HAS_THREADS
#if (APR_USE_PTHREAD_SERIALIZE)
static apr_status_t lock_intra_cleanup(void *data)
{
apr_lock_t *lock = (apr_lock_t *) data;
apr_status_t stat;
pthread_mutex_unlock(lock->intraproc);
stat = pthread_mutex_destroy(lock->intraproc);
#ifdef PTHREAD_SETS_ERRNO
if (stat) {
stat = errno;
}
#endif
return stat;
}
static apr_status_t intra_create(apr_lock_t *new, const char *fname)
{
apr_status_t stat;
pthread_mutexattr_t mattr;
new->intraproc = (pthread_mutex_t *)apr_palloc(new->pool,
sizeof(pthread_mutex_t));
if (new->intraproc == NULL) {
return errno;
}
if ((stat = pthread_mutexattr_init(&mattr))) {
#ifdef PTHREAD_SETS_ERRNO
stat = errno;
#endif
lock_intra_cleanup(new);
return stat;
}
if ((stat = pthread_mutex_init(new->intraproc, &mattr))) {
#ifdef PTHREAD_SETS_ERRNO
stat = errno;
#endif
lock_intra_cleanup(new);
return stat;
}
if ((stat = pthread_mutexattr_destroy(&mattr))) {
#ifdef PTHREAD_SETS_ERRNO
stat = errno;
#endif
lock_intra_cleanup(new);
return stat;
}
new->curr_locked = 0;
apr_pool_cleanup_register(new->pool, (void *)new, lock_intra_cleanup,
apr_pool_cleanup_null);
return APR_SUCCESS;
}
static apr_status_t intra_acquire(apr_lock_t *lock)
{
apr_status_t stat;
stat = pthread_mutex_lock(lock->intraproc);
#ifdef PTHREAD_SETS_ERRNO
if (stat) {
stat = errno;
}
#endif
return stat;
}
static apr_status_t intra_tryacquire(apr_lock_t *lock)
{
apr_status_t stat;
stat = pthread_mutex_trylock(lock->intraproc);
#ifdef PTHREAD_SETS_ERRNO
if (stat) {
stat = errno;
}
#endif
/* Normalize the return code. */
if (stat == EBUSY)
stat = APR_EBUSY;
return stat;
}
static apr_status_t intra_release(apr_lock_t *lock)
{
apr_status_t status;
status = pthread_mutex_unlock(lock->intraproc);
#ifdef PTHREAD_SETS_ERRNO
if (status) {
status = errno;
}
#endif
return status;
}
static apr_status_t intra_destroy(apr_lock_t *lock)
{
apr_status_t stat;
if ((stat = lock_intra_cleanup(lock)) == APR_SUCCESS) {
apr_pool_cleanup_kill(lock->pool, lock, lock_intra_cleanup);
return APR_SUCCESS;
}
return stat;
}
#endif /* APR_USE_PTHREAD_SERIALIZE */
const apr_unix_lock_methods_t apr_unix_intra_methods =
{
0,
intra_create,
intra_acquire,
intra_tryacquire,
NULL, /* no read lock concept */
NULL, /* no write lock concept */
intra_release,
intra_destroy,
NULL /* no child init */
};
#if APR_HAS_RWLOCK_SERIALIZE
static apr_status_t rwlock_create(apr_lock_t *new, const char *fname)
{
/* XXX check retcode */
pthread_rwlock_init(&new->rwlock, NULL);
return APR_SUCCESS;
}
static apr_status_t rwlock_acquire_read(apr_lock_t *lock)
{
/* XXX PTHREAD_SETS_ERRNO crap? */
return pthread_rwlock_rdlock(&lock->rwlock);
}
static apr_status_t rwlock_acquire_write(apr_lock_t *lock)
{
/* XXX PTHREAD_SETS_ERRNO crap? */
return pthread_rwlock_wrlock(&lock->rwlock);
}
static apr_status_t rwlock_release(apr_lock_t *lock)
{
/* XXX PTHREAD_SETS_ERRNO crap? */
return pthread_rwlock_unlock(&lock->rwlock);
}
static apr_status_t rwlock_destroy(apr_lock_t *lock)
{
/* XXX PTHREAD_SETS_ERRNO crap? */
return pthread_rwlock_destroy(&lock->rwlock);
}
const apr_unix_lock_methods_t apr_unix_rwlock_methods =
{
0,
rwlock_create,
NULL, /* no standard acquire method; app better not call :) */
NULL, /* no standard tryacquire method; app better not call :) */
rwlock_acquire_read,
rwlock_acquire_write,
rwlock_release,
rwlock_destroy,
NULL /* no child init method */
};
#endif
#endif /* APR_HAS_THREADS */
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