1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "apr_general.h"
19 #include "apr_strings.h"
20 #include "apr_portable.h"
21 #include "apr_arch_thread_mutex.h"
22 #include "apr_arch_file_io.h"
26 static apr_status_t thread_mutex_cleanup(void *themutex)
28 apr_thread_mutex_t *mutex = themutex;
29 return apr_thread_mutex_destroy(mutex);
34 /* XXX: Need to respect APR_THREAD_MUTEX_[UN]NESTED flags argument
35 * or return APR_ENOTIMPL!!!
37 APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex,
41 apr_thread_mutex_t *new_mutex;
44 new_mutex = (apr_thread_mutex_t *)apr_palloc(pool, sizeof(apr_thread_mutex_t));
45 new_mutex->pool = pool;
47 rc = DosCreateMutexSem(NULL, &(new_mutex->hMutex), 0, FALSE);
51 apr_pool_cleanup_register(pool, new_mutex, thread_mutex_cleanup, apr_pool_cleanup_null);
53 return APR_OS2_STATUS(rc);
58 APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex)
60 ULONG rc = DosRequestMutexSem(mutex->hMutex, SEM_INDEFINITE_WAIT);
61 return APR_OS2_STATUS(rc);
66 APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex)
68 ULONG rc = DosRequestMutexSem(mutex->hMutex, SEM_IMMEDIATE_RETURN);
69 return APR_OS2_STATUS(rc);
74 APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex)
76 ULONG rc = DosReleaseMutexSem(mutex->hMutex);
77 return APR_OS2_STATUS(rc);
82 APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex)
86 if (mutex->hMutex == 0)
89 while (DosReleaseMutexSem(mutex->hMutex) == 0);
91 rc = DosCloseMutexSem(mutex->hMutex);
98 return APR_FROM_OS_ERROR(rc);
101 APR_POOL_IMPLEMENT_ACCESSOR(thread_mutex)