/* Copyright 2000-2004 The Apache Software Foundation * * 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_strings.h" #include "apr_arch_global_mutex.h" #include "apr_proc_mutex.h" #include "apr_thread_mutex.h" #include "apr_portable.h" static apr_status_t global_mutex_cleanup(void *data) 7 { 7 apr_global_mutex_t *m = (apr_global_mutex_t *)data; 7 apr_status_t rv; 7 rv = apr_proc_mutex_destroy(m->proc_mutex); #if APR_HAS_THREADS 7 if (m->thread_mutex) { 7 if (rv != APR_SUCCESS) { ###### (void)apr_thread_mutex_destroy(m->thread_mutex); } else { 7 rv = apr_thread_mutex_destroy(m->thread_mutex); } } #endif /* APR_HAS_THREADS */ 7 return rv; } APR_DECLARE(apr_status_t) apr_global_mutex_create(apr_global_mutex_t **mutex, const char *fname, apr_lockmech_e mech, apr_pool_t *pool) 5 { 5 apr_status_t rv; 5 apr_global_mutex_t *m; 5 m = (apr_global_mutex_t *)apr_palloc(pool, sizeof(*m)); 5 m->pool = pool; 5 rv = apr_proc_mutex_create(&m->proc_mutex, fname, mech, m->pool); 5 if (rv != APR_SUCCESS) { ###### return rv; } #if APR_HAS_THREADS 5 if (m->proc_mutex->inter_meth->flags & APR_PROCESS_LOCK_MECH_IS_GLOBAL) { ###### m->thread_mutex = NULL; /* We don't need a thread lock. */ } else { 5 rv = apr_thread_mutex_create(&m->thread_mutex, APR_THREAD_MUTEX_DEFAULT, m->pool); 5 if (rv != APR_SUCCESS) { ###### rv = apr_proc_mutex_destroy(m->proc_mutex); ###### return rv; } } #endif /* APR_HAS_THREADS */ 5 apr_pool_cleanup_register(m->pool, (void *)m, global_mutex_cleanup, apr_pool_cleanup_null); 5 *mutex = m; 5 return APR_SUCCESS; } APR_DECLARE(apr_status_t) apr_global_mutex_child_init( apr_global_mutex_t **mutex, const char *fname, apr_pool_t *pool) 4 { 4 apr_status_t rv; 4 rv = apr_proc_mutex_child_init(&((*mutex)->proc_mutex), fname, pool); 4 return rv; } APR_DECLARE(apr_status_t) apr_global_mutex_lock(apr_global_mutex_t *mutex) 1024 { 1024 apr_status_t rv; #if APR_HAS_THREADS 1024 if (mutex->thread_mutex) { 1024 rv = apr_thread_mutex_lock(mutex->thread_mutex); 1024 if (rv != APR_SUCCESS) { ###### return rv; } } #endif /* APR_HAS_THREADS */ 1024 rv = apr_proc_mutex_lock(mutex->proc_mutex); #if APR_HAS_THREADS 1024 if (rv != APR_SUCCESS) { ###### if (mutex->thread_mutex) { ###### (void)apr_thread_mutex_unlock(mutex->thread_mutex); } } #endif /* APR_HAS_THREADS */ 1024 return rv; } APR_DECLARE(apr_status_t) apr_global_mutex_trylock(apr_global_mutex_t *mutex) ###### { ###### apr_status_t rv; #if APR_HAS_THREADS ###### if (mutex->thread_mutex) { ###### rv = apr_thread_mutex_trylock(mutex->thread_mutex); ###### if (rv != APR_SUCCESS) { ###### return rv; } } #endif /* APR_HAS_THREADS */ ###### rv = apr_proc_mutex_trylock(mutex->proc_mutex); #if APR_HAS_THREADS ###### if (rv != APR_SUCCESS) { ###### if (mutex->thread_mutex) { ###### (void)apr_thread_mutex_unlock(mutex->thread_mutex); } } #endif /* APR_HAS_THREADS */ ###### return rv; } APR_DECLARE(apr_status_t) apr_global_mutex_unlock(apr_global_mutex_t *mutex) 1024 { 1024 apr_status_t rv; 1024 rv = apr_proc_mutex_unlock(mutex->proc_mutex); #if APR_HAS_THREADS 1024 if (mutex->thread_mutex) { 1024 if (rv != APR_SUCCESS) { ###### (void)apr_thread_mutex_unlock(mutex->thread_mutex); } else { 1024 rv = apr_thread_mutex_unlock(mutex->thread_mutex); } } #endif /* APR_HAS_THREADS */ 1024 return rv; } APR_DECLARE(apr_status_t) apr_os_global_mutex_get(apr_os_global_mutex_t *ospmutex, apr_global_mutex_t *pmutex) ###### { ###### ospmutex->pool = pmutex->pool; ###### ospmutex->proc_mutex = pmutex->proc_mutex; #if APR_HAS_THREADS ###### ospmutex->thread_mutex = pmutex->thread_mutex; #endif ###### return APR_SUCCESS; } APR_DECLARE(apr_status_t) apr_global_mutex_destroy(apr_global_mutex_t *mutex) ###### { ###### return apr_pool_cleanup_run(mutex->pool, mutex, global_mutex_cleanup); } ###### APR_POOL_IMPLEMENT_ACCESSOR(global_mutex)