| /* 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_general.h" |
| #include "apr_lib.h" |
| #include "apr_strings.h" |
| #include "apr_portable.h" |
| #include "apr_arch_thread_mutex.h" |
| #include "apr_arch_file_io.h" |
| #include <string.h> |
| #include <stddef.h> |
| |
| static apr_status_t thread_mutex_cleanup(void *themutex) |
| { |
| apr_thread_mutex_t *mutex = themutex; |
| return apr_thread_mutex_destroy(mutex); |
| } |
| |
| |
| |
| /* XXX: Need to respect APR_THREAD_MUTEX_[UN]NESTED flags argument |
| * or return APR_ENOTIMPL!!! |
| */ |
| APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex, |
| unsigned int flags, |
| apr_pool_t *pool) |
| { |
| apr_thread_mutex_t *new_mutex; |
| ULONG rc; |
| |
| new_mutex = (apr_thread_mutex_t *)apr_palloc(pool, sizeof(apr_thread_mutex_t)); |
| new_mutex->pool = pool; |
| |
| rc = DosCreateMutexSem(NULL, &(new_mutex->hMutex), 0, FALSE); |
| *mutex = new_mutex; |
| |
| if (!rc) |
| apr_pool_cleanup_register(pool, new_mutex, thread_mutex_cleanup, apr_pool_cleanup_null); |
| |
| return APR_OS2_STATUS(rc); |
| } |
| |
| |
| |
| APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex) |
| { |
| ULONG rc = DosRequestMutexSem(mutex->hMutex, SEM_INDEFINITE_WAIT); |
| return APR_OS2_STATUS(rc); |
| } |
| |
| |
| |
| APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex) |
| { |
| ULONG rc = DosRequestMutexSem(mutex->hMutex, SEM_IMMEDIATE_RETURN); |
| return APR_OS2_STATUS(rc); |
| } |
| |
| |
| |
| APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex) |
| { |
| ULONG rc = DosReleaseMutexSem(mutex->hMutex); |
| return APR_OS2_STATUS(rc); |
| } |
| |
| |
| |
| APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex) |
| { |
| ULONG rc; |
| |
| if (mutex->hMutex == 0) |
| return APR_SUCCESS; |
| |
| while (DosReleaseMutexSem(mutex->hMutex) == 0); |
| |
| rc = DosCloseMutexSem(mutex->hMutex); |
| |
| if (!rc) { |
| mutex->hMutex = 0; |
| return APR_SUCCESS; |
| } |
| |
| return APR_FROM_OS_ERROR(rc); |
| } |
| |
| APR_POOL_IMPLEMENT_ACCESSOR(thread_mutex) |
| |