/**
 * Copyright (c) 2006-2014 LOVE Development Team
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 **/

#ifndef LOVE_THREAD_CHANNEL_H
#define LOVE_THREAD_CHANNEL_H

// STL
#include <queue>
#include <string>

// LOVE
#include "common/Variant.h"
#include "threads.h"

namespace love
{
namespace thread
{

class Channel : public love::Object
{
// FOR WRAPPER USE ONLY
friend void retainVariant(Channel *, Variant *);
friend void releaseVariant(Channel *, Variant *);

public:

	Channel();
	~Channel();

	static Channel *getChannel(const std::string &name);

	unsigned long push(Variant *var);
	void supply(Variant *var); // blocking push
	Variant *pop();
	Variant *demand(); // blocking pop
	Variant *peek();
	int getCount();
	void clear();

	void retain();
	void release();

private:

	Channel(const std::string &name);
	void lockMutex();
	void unlockMutex();

	Mutex *mutex;
	Conditional *cond;
	std::queue<Variant *> queue;
	bool named;
	std::string name;

	unsigned long sent;
	unsigned long received;

}; // Channel

} // thread
} // love

#endif // LOVE_THREAD_CHANNEL_H