//
// mp::blocking_vector
//
// Copyright (C) 2008 FURUHASHI Sadayuki
//
//    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.
//

#ifndef MP_BLOCKING_VECTOR_H__
#define MP_BLOCKING_VECTOR_H__

#include "mp/pthread.h"
#include <vector>

namespace mp {


template <typename T>
class blocking_vector {
public:
	blocking_vector();
	~blocking_vector();
public:
	typedef T value_type;
public:
	void push_back(const T& x);
	void swap(std::vector<T>& x);
private:
	std::vector<T> m_vector;
	pthread_mutex m_mutex;
	pthread_cond m_cond;
};


template <typename T>
blocking_vector<T>::blocking_vector() { }

template <typename T>
blocking_vector<T>::~blocking_vector() { }

template <typename T>
void blocking_vector<T>::push_back(const T& x)
{
	pthread_scoped_lock lk(m_mutex);
	m_vector.push_back(x);
	m_cond.signal();
}

template <typename T>
void blocking_vector<T>::swap(std::vector<T>& x)
{
	pthread_scoped_lock lk(m_mutex);
	while(m_vector.empty()) { m_cond.wait(m_mutex); }
	m_vector.swap(x);
}


}  // namespace mp

#endif /* mp/blocking_vector.h */