BlockingList.hpp
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/****************************************************************************
*
* Copyright (C) 2019 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/**
* @file BlockingList.hpp
*
* A blocking intrusive linked list.
*/
#pragma once
#include "IntrusiveSortedList.hpp"
#include "LockGuard.hpp"
#include <pthread.h>
#include <stdlib.h>
template<class T>
class BlockingList : public IntrusiveSortedList<T>
{
public:
~BlockingList()
{
pthread_mutex_destroy(&_mutex);
pthread_cond_destroy(&_cv);
}
void add(T newNode)
{
LockGuard lg{_mutex};
IntrusiveSortedList<T>::add(newNode);
}
bool remove(T removeNode)
{
LockGuard lg{_mutex};
return IntrusiveSortedList<T>::remove(removeNode);
}
size_t size()
{
LockGuard lg{_mutex};
return IntrusiveSortedList<T>::size();
}
void clear()
{
LockGuard lg{_mutex};
IntrusiveSortedList<T>::clear();
}
pthread_mutex_t &mutex() { return _mutex; }
private:
pthread_mutex_t _mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t _cv = PTHREAD_COND_INITIALIZER;
};