937a200089
This is actually a fully functional build except: * All internal shared libraries are static linked to make sure there is no interference with ports (and to reduce build time). * It does not have the python/perl/etc plugin or API support. * By default, it installs as "svnlite" rather than "svn". * If WITH_SVN added in make.conf, you get "svn". * If WITHOUT_SVNLITE is in make.conf, this is completely disabled. To be absolutely clear, this is not intended for any use other than checking out freebsd source and committing, like we once did with cvs. It should be usable for small scale local repositories that don't need the python/perl plugin architecture.
140 lines
5.4 KiB
C
140 lines
5.4 KiB
C
/* 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_THREAD_COND_H
|
|
#define APR_THREAD_COND_H
|
|
|
|
/**
|
|
* @file apr_thread_cond.h
|
|
* @brief APR Condition Variable Routines
|
|
*/
|
|
|
|
#include "apr.h"
|
|
#include "apr_pools.h"
|
|
#include "apr_errno.h"
|
|
#include "apr_time.h"
|
|
#include "apr_thread_mutex.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
#if APR_HAS_THREADS || defined(DOXYGEN)
|
|
|
|
/**
|
|
* @defgroup apr_thread_cond Condition Variable Routines
|
|
* @ingroup APR
|
|
* @{
|
|
*/
|
|
|
|
/** Opaque structure for thread condition variables */
|
|
typedef struct apr_thread_cond_t apr_thread_cond_t;
|
|
|
|
/**
|
|
* Note: destroying a condition variable (or likewise, destroying or
|
|
* clearing the pool from which a condition variable was allocated) if
|
|
* any threads are blocked waiting on it gives undefined results.
|
|
*/
|
|
|
|
/**
|
|
* Create and initialize a condition variable that can be used to signal
|
|
* and schedule threads in a single process.
|
|
* @param cond the memory address where the newly created condition variable
|
|
* will be stored.
|
|
* @param pool the pool from which to allocate the condition.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_thread_cond_create(apr_thread_cond_t **cond,
|
|
apr_pool_t *pool);
|
|
|
|
/**
|
|
* Put the active calling thread to sleep until signaled to wake up. Each
|
|
* condition variable must be associated with a mutex, and that mutex must
|
|
* be locked before calling this function, or the behavior will be
|
|
* undefined. As the calling thread is put to sleep, the given mutex
|
|
* will be simultaneously released; and as this thread wakes up the lock
|
|
* is again simultaneously acquired.
|
|
* @param cond the condition variable on which to block.
|
|
* @param mutex the mutex that must be locked upon entering this function,
|
|
* is released while the thread is asleep, and is again acquired before
|
|
* returning from this function.
|
|
* @remark Spurious wakeups may occur. Before and after every call to wait on
|
|
* a condition variable, the caller should test whether the condition is already
|
|
* met.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_thread_cond_wait(apr_thread_cond_t *cond,
|
|
apr_thread_mutex_t *mutex);
|
|
|
|
/**
|
|
* Put the active calling thread to sleep until signaled to wake up or
|
|
* the timeout is reached. Each condition variable must be associated
|
|
* with a mutex, and that mutex must be locked before calling this
|
|
* function, or the behavior will be undefined. As the calling thread
|
|
* is put to sleep, the given mutex will be simultaneously released;
|
|
* and as this thread wakes up the lock is again simultaneously acquired.
|
|
* @param cond the condition variable on which to block.
|
|
* @param mutex the mutex that must be locked upon entering this function,
|
|
* is released while the thread is asleep, and is again acquired before
|
|
* returning from this function.
|
|
* @param timeout The amount of time in microseconds to wait. This is
|
|
* a maximum, not a minimum. If the condition is signaled, we
|
|
* will wake up before this time, otherwise the error APR_TIMEUP
|
|
* is returned.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_thread_cond_timedwait(apr_thread_cond_t *cond,
|
|
apr_thread_mutex_t *mutex,
|
|
apr_interval_time_t timeout);
|
|
|
|
/**
|
|
* Signals a single thread, if one exists, that is blocking on the given
|
|
* condition variable. That thread is then scheduled to wake up and acquire
|
|
* the associated mutex. Although it is not required, if predictable scheduling
|
|
* is desired, that mutex must be locked while calling this function.
|
|
* @param cond the condition variable on which to produce the signal.
|
|
* @remark If no threads are waiting on the condition variable, nothing happens.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_thread_cond_signal(apr_thread_cond_t *cond);
|
|
|
|
/**
|
|
* Signals all threads blocking on the given condition variable.
|
|
* Each thread that was signaled is then scheduled to wake up and acquire
|
|
* the associated mutex. This will happen in a serialized manner.
|
|
* @param cond the condition variable on which to produce the broadcast.
|
|
* @remark If no threads are waiting on the condition variable, nothing happens.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_thread_cond_broadcast(apr_thread_cond_t *cond);
|
|
|
|
/**
|
|
* Destroy the condition variable and free the associated memory.
|
|
* @param cond the condition variable to destroy.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_thread_cond_destroy(apr_thread_cond_t *cond);
|
|
|
|
/**
|
|
* Get the pool used by this thread_cond.
|
|
* @return apr_pool_t the pool
|
|
*/
|
|
APR_POOL_DECLARE_ACCESSOR(thread_cond);
|
|
|
|
#endif /* APR_HAS_THREADS */
|
|
|
|
/** @} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ! APR_THREAD_COND_H */
|