// Copyright (C) 2003 Intel Corporation

//////////////////////////////////////////////////////////////////////////
// Timer.h
//
// This file contains the definition of the Timer class
// The timer class wraps the TimerManager into an easy-to-use 
// object-oriented interface.
//
// Usage:
//
// Option 1: Construct an instance of the "Timer" class with an external 
// callback function. When calling the "start" method, the callback
// function will be registered with the timer manager and start working.
//
// Option 2: Subclass the "Timer" class and reimplement the virtual "run"
// method. When calling the "start" method, the "run" method will be called
// on timer expiration
//
// Implementation overview:
// Calling the "start" method will register a new timer, which will call the
// "run" method. The default implementation of the "run" method will call
// the Callback function given in the constructor.
//////////////////////////////////////////////////////////////////////////
#ifndef _LAD_TIMER_H
#define _LAD_TIMER_H

#ifndef NULL
#define NULL 0
#endif

#ifndef __IMR_WIN__
#include <sys/timeb.h>
#include "Lock.h"
#else
// Redefining FD_SETSIZE must be done before including the windows tcp/ip header files.
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms740141(v=vs.85).aspx
#define FD_SETSIZE 1024
#include <winsock2.h>
#include <ws2tcpip.h>
#include <Windows.h>
#endif

#include "TimerManager.h"
typedef void (*CallbackFunction) (void*);

class Timer {
public:
	Timer (CallbackFunction func = NULL, void* param = NULL);
	virtual ~Timer();

    void start(long msecs, bool recurring = true);
	void stop();

#ifdef __IMR_WIN__
	static unsigned long tickCount() { return GetTickCount(); }
#else
	static unsigned long tickCount();
#endif
protected:
	virtual void run();

#ifndef __IMR_WIN__
	static Semaphore _sem;
	static struct timeb _base;
#endif

private:
	
	struct _CallbackParam: public CallbackParam{
		Timer *self;
		_CallbackParam(Timer* t){self = t;}
		_CallbackParam():self(0){}
		virtual ~_CallbackParam(){}
	};

	static void			_internalCallback(SPtr<CallbackParam> p);
	CallbackFunction	_func;
	void *				_param;
	int					_timerId;
};

#endif //_LAD_TIMER_H