| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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) |
| |