/***************************************************************************
				Fixed size Queue Class Header ( FixedQueue.h )
                -----------------------------------------
	begin      : 2013/08/09
	copyright  : (C) 2005 SolutionBox Inc.
	author     : Development 1 Team
	email      : dev1@solbox.com
	version    : 3.2

	CopyRight(C) 2005 SolutionBox Inc. All Rights reserved.
	Redistribution and use in source and binary forms, with or with out
	modification, are not permitted in outside of SolutionBox Inc.
***************************************************************************/

#ifndef __FIXED_SIZE_QUEUE_H__
#define __FIXED_SIZE_QUEUE_H__

#include <pthread.h>
#include <queue>

class CMutexLock
{
public:
	CMutexLock(pthread_mutex_t * mutex);
	~CMutexLock();
	
private:
	pthread_mutex_t* m_plock;
};

class FixedQueueData
{
public:
	size_t data_size;
	char * data;
	
	FixedQueueData ()
		: data_size(0), data(NULL) {};

	~FixedQueueData ()	{ if(data) delete [] data; }
};

class CFixedQueue
{
public:
	///@brief 생성자.
	///@param bufferSize	[in] 데이터 버퍼 크기
	///@param qSzie			[in] 큐의 크기
	CFixedQueue (int bufferSize, int qSzie );
	
	///@brief 소멸자.
	~CFixedQueue();

	///@brief 데이터 삽입
	///@param buf			[in] 데이터
	///@param buffersize	[in] 데이터 크기
	///@return 0: 정상, 1:queue full, -1 : error
	int Push(char* buf, size_t buffersize);

	///@brief 데이터 추출
	///@return 데이터 리턴(FIFO)
	///@param buf			[in] 데이터
	///@param buffersize	[in] 데이터 크기
	///@return 0: 정상, 1: queue empty   나머지 : error
	int Pop(char* buf, size_t buffersize);

	
protected:
	///@brief 큐에 초기화
	void ReleaseAll();

private:
	int m_bufferSize;
	int m_queueSize;

	pthread_mutex_t m_mutex;

	std::queue<FixedQueueData *>	m_queue;
};

#endif // __FIXED_SIZE_QUEUE_H__