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authorhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 03:10:21 -0500
committerhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 03:10:21 -0500
commitc0b7206652b2852bc574694e7ba07ba1c2acdc00 (patch)
tree5cb95cb0e19e03610525903df46279df2c3b7eb1 /rubbos/app/apache2/include/apr_global_mutex.h
parentb6d3d6e668b793220f2d3af1bc3e828553dc3fe6 (diff)
delete app
Change-Id: Id4c572809969ebe89e946e88063eaed262cff3f2 Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>
Diffstat (limited to 'rubbos/app/apache2/include/apr_global_mutex.h')
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-/* 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.
- */
-
-#ifndef APR_GLOBAL_MUTEX_H
-#define APR_GLOBAL_MUTEX_H
-
-/**
- * @file apr_global_mutex.h
- * @brief APR Global Locking Routines
- */
-
-#include "apr.h"
-#include "apr_proc_mutex.h" /* only for apr_lockmech_e */
-#include "apr_pools.h"
-#include "apr_errno.h"
-#if APR_PROC_MUTEX_IS_GLOBAL
-#include "apr_proc_mutex.h"
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-/**
- * @defgroup APR_GlobalMutex Global Locking Routines
- * @ingroup APR
- * @{
- */
-
-#if !APR_PROC_MUTEX_IS_GLOBAL || defined(DOXYGEN)
-
-/** Opaque global mutex structure. */
-typedef struct apr_global_mutex_t apr_global_mutex_t;
-
-/* Function definitions */
-
-/**
- * Create and initialize a mutex that can be used to synchronize both
- * processes and threads. Note: There is considerable overhead in using
- * this API if only cross-process or cross-thread mutual exclusion is
- * required. See apr_proc_mutex.h and apr_thread_mutex.h for more
- * specialized lock routines.
- * @param mutex the memory address where the newly created mutex will be
- * stored.
- * @param fname A file name to use if the lock mechanism requires one. This
- * argument should always be provided. The lock code itself will
- * determine if it should be used.
- * @param mech The mechanism to use for the interprocess lock, if any; one of
- * <PRE>
- * APR_LOCK_FCNTL
- * APR_LOCK_FLOCK
- * APR_LOCK_SYSVSEM
- * APR_LOCK_POSIXSEM
- * APR_LOCK_PROC_PTHREAD
- * APR_LOCK_DEFAULT pick the default mechanism for the platform
- * </PRE>
- * @param pool the pool from which to allocate the mutex.
- * @warning Check APR_HAS_foo_SERIALIZE defines to see if the platform supports
- * APR_LOCK_foo. Only APR_LOCK_DEFAULT is portable.
- */
-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);
-
-/**
- * Re-open a mutex in a child process.
- * @param mutex The newly re-opened mutex structure.
- * @param fname A file name to use if the mutex mechanism requires one. This
- * argument should always be provided. The mutex code itself will
- * determine if it should be used. This filename should be the
- * same one that was passed to apr_global_mutex_create().
- * @param pool The pool to operate on.
- * @remark This function must be called to maintain portability, even
- * if the underlying lock mechanism does not require it.
- */
-APR_DECLARE(apr_status_t) apr_global_mutex_child_init(
- apr_global_mutex_t **mutex,
- const char *fname,
- apr_pool_t *pool);
-
-/**
- * Acquire the lock for the given mutex. If the mutex is already locked,
- * the current thread will be put to sleep until the lock becomes available.
- * @param mutex the mutex on which to acquire the lock.
- */
-APR_DECLARE(apr_status_t) apr_global_mutex_lock(apr_global_mutex_t *mutex);
-
-/**
- * Attempt to acquire the lock for the given mutex. If the mutex has already
- * been acquired, the call returns immediately with APR_EBUSY. Note: it
- * is important that the APR_STATUS_IS_EBUSY(s) macro be used to determine
- * if the return value was APR_EBUSY, for portability reasons.
- * @param mutex the mutex on which to attempt the lock acquiring.
- */
-APR_DECLARE(apr_status_t) apr_global_mutex_trylock(apr_global_mutex_t *mutex);
-
-/**
- * Release the lock for the given mutex.
- * @param mutex the mutex from which to release the lock.
- */
-APR_DECLARE(apr_status_t) apr_global_mutex_unlock(apr_global_mutex_t *mutex);
-
-/**
- * Destroy the mutex and free the memory associated with the lock.
- * @param mutex the mutex to destroy.
- */
-APR_DECLARE(apr_status_t) apr_global_mutex_destroy(apr_global_mutex_t *mutex);
-
-/**
- * Get the pool used by this global_mutex.
- * @return apr_pool_t the pool
- */
-APR_POOL_DECLARE_ACCESSOR(global_mutex);
-
-#else /* APR_PROC_MUTEX_IS_GLOBAL */
-
-/* Some platforms [e.g. Win32] have cross process locks that are truly
- * global locks, since there isn't the concept of cross-process locks.
- * Define these platforms in terms of an apr_proc_mutex_t.
- */
-
-#define apr_global_mutex_t apr_proc_mutex_t
-#define apr_global_mutex_create apr_proc_mutex_create
-#define apr_global_mutex_child_init apr_proc_mutex_child_init
-#define apr_global_mutex_lock apr_proc_mutex_lock
-#define apr_global_mutex_trylock apr_proc_mutex_trylock
-#define apr_global_mutex_unlock apr_proc_mutex_unlock
-#define apr_global_mutex_destroy apr_proc_mutex_destroy
-#define apr_global_mutex_pool_get apr_proc_mutex_pool_get
-
-#endif
-
-/** @} */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ndef APR_GLOBAL_MUTEX_H */