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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 _LOG4CXX_HELPERS_CONDITION_H
#define _LOG4CXX_HELPERS_CONDITION_H
#include <log4cxx/log4cxx.h>
#include <log4cxx/helpers/mutex.h>
extern "C" {
struct apr_thread_cond_t;
}
namespace log4cxx
{
namespace helpers
{
class Pool;
/**
* This class provides a means for one thread to suspend exception until
* notified by another thread to resume. This class should have
* similar semantics to java.util.concurrent.locks.Condition.
*/
class LOG4CXX_EXPORT Condition
{
public:
/**
* Create new instance.
* @param p pool on which condition will be created. Needs to be
* longer-lived than created instance.
*/
Condition(log4cxx::helpers::Pool& p);
/**
* Destructor.
*/
~Condition();
/**
* Signal all waiting threads.
*/
log4cxx_status_t signalAll();
/**
* Await signaling of condition.
* @param lock lock associated with condition, calling thread must
* own lock. Lock will be released while waiting and reacquired
* before returning from wait.
* @throws InterruptedException if thread is interrupted.
*/
void await(Mutex& lock);
private:
apr_thread_cond_t* condition;
Condition(const Condition&);
Condition& operator=(const Condition&);
};
} // namespace helpers
} // namespace log4cxx
#endif //_LOG4CXX_HELPERS_CONDITION_H
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