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/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
* applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr.h"
#include "apr_private.h"
#include "apr_general.h"
#include "apr_strings.h"
#include "apr_arch_thread_rwlock.h"
#include "apr_portable.h"
static apr_status_t thread_rwlock_cleanup(void *data)
{
apr_thread_rwlock_t *rwlock = (apr_thread_rwlock_t *)data;
NXRwLockFree (rwlock->rwlock);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_thread_rwlock_create(apr_thread_rwlock_t **rwlock,
apr_pool_t *pool)
{
apr_thread_rwlock_t *new_rwlock = NULL;
NXHierarchy_t hierarchy = 1; //for libc NKS NXRwLockAlloc
NXLockInfo_t *info; //for libc NKS NXRwLockAlloc
new_rwlock = (apr_thread_rwlock_t *)apr_pcalloc(pool, sizeof(apr_thread_rwlock_t));
if(new_rwlock ==NULL) {
return APR_ENOMEM;
}
new_rwlock->pool = pool;
info = (NXLockInfo_t *)apr_pcalloc(pool, sizeof(NXLockInfo_t));
new_rwlock->rwlock = NXRwLockAlloc(hierarchy, info);
if(new_rwlock->rwlock == NULL)
return APR_ENOMEM;
apr_pool_cleanup_register(new_rwlock->pool, new_rwlock, thread_rwlock_cleanup,
apr_pool_cleanup_null);
*rwlock = new_rwlock;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_thread_rwlock_rdlock(apr_thread_rwlock_t *rwlock)
{
NXRdLock(rwlock->rwlock);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_thread_rwlock_tryrdlock(apr_thread_rwlock_t *rwlock)
{
if (!NXTryRdLock(rwlock->rwlock))
return APR_EBUSY;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_thread_rwlock_wrlock(apr_thread_rwlock_t *rwlock)
{
NXWrLock(rwlock->rwlock);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_thread_rwlock_trywrlock(apr_thread_rwlock_t *rwlock)
{
if (!NXTryWrLock(rwlock->rwlock))
return APR_EBUSY;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_thread_rwlock_unlock(apr_thread_rwlock_t *rwlock)
{
NXRwUnlock(rwlock->rwlock);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_thread_rwlock_destroy(apr_thread_rwlock_t *rwlock)
{
apr_status_t stat;
if ((stat = thread_rwlock_cleanup(rwlock)) == APR_SUCCESS) {
apr_pool_cleanup_kill(rwlock->pool, rwlock, thread_rwlock_cleanup);
return APR_SUCCESS;
}
return stat;
}
APR_POOL_IMPLEMENT_ACCESSOR(thread_rwlock)
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