www.pudn.com > Image_segment.rar > PerfTimer.h

//Copyright (c) 2004-2005, Baris Sumengen 
//All rights reserved. 
// 
// CIMPL Matrix Performance Library 
// 
//Redistribution and use in source and binary 
//forms, with or without modification, are 
//permitted provided that the following 
//conditions are met: 
// 
//    * No commercial use is allowed.  
//    This software can only be used 
//    for non-commercial purposes. This  
//    distribution is mainly intended for 
//    academic research and teaching. 
//    * Redistributions of source code must 
//    retain the above copyright notice, this 
//    list of conditions and the following 
//    disclaimer. 
//    * Redistributions of binary form must 
//    mention the above copyright notice, this 
//    list of conditions and the following 
//    disclaimer in a clearly visible part  
//    in associated product manual,  
//    readme, and web site of the redistributed  
//    software. 
//    * 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. 
//    * The name of Baris Sumengen may not 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 
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//EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
//(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
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#pragma once 
#ifndef PERFTIMER_H 
#define PERFTIMER_H 
 
#include  
using std::cout; 
using std::cerr; 
using std::endl; 
 
#include 
 
namespace CIMPL 
{ 
 
	class PerfTimer 
	{ 
 
	private: 
		bool active; 
		clock_t clockStart; 
		clock_t elapsed; 
 
	public: 
		PerfTimer(void) 
		{ 
			active = false; 
			elapsed = 0; 
		} 
		~PerfTimer(void){} 
		 
		void Start() 
		{ 
			if(!active) 
			{ 
				active = true;
				clockStart = clock();
			} 
			else 
			{ 
				Utility::Warning("This performance timer is already active!"); 
			} 
		} 
		 
		void Pause() 
		{ 
			if(active) 
			{ 
				elapsed += clock() - clockStart;
				active = false;
			} 
			else 
			{ 
				Utility::Warning("This performance timer is not active. You cannot pause it!"); 
			} 
		} 
 
 
		void Reset() 
		{ 
			if(!active) 
			{ 
				elapsed  = 0;
			} 
			else 
			{ 
				Utility::Warning("This performance timer is already active. You need to first pause it before resetting!"); 
			} 
		} 
		 
		clock_t GetElapsed() 
		{ 
			if(active) 
			{ 
				elapsed += clock() - clockStart;
				active = false;
				Utility::Warning("This performance timer is still active.\nI am pausing it now automatically before calculating the elapsed time!"); 
			} 
			return elapsed; 
		} 
 
 
		double GetElapsedSeconds() 
		{ 
			if(active) 
			{ 
				elapsed += clock() - clockStart;
				active = false;
				Utility::Warning("This performance timer is still active.\nI am pausing it now automatically before calculating the elapsed time!"); 
			} 
			return (double)elapsed/CLOCKS_PER_SEC; 
		} 
 
 
		void DisplayElapsed() 
		{ 
			if(active) 
			{ 
				elapsed += clock() - clockStart;
				active = false;
				Utility::Warning("This performance timer is still active.\nI am pausing it now automatically before calculating the elapsed time!"); 
			} 
			 
			cout << "Elapsed CPU clocks: " << elapsed << endl; 
		} 
		 
		void DisplayElapsedSeconds() 
		{ 
			if(active) 
			{ 
				elapsed += clock() - clockStart;
				active = false;
				Utility::Warning("This performance timer is still active.\nI am pausing it now automatically before calculating the elapsed time!"); 
			} 
			 
			cout << "Elapsed time: " << (double)elapsed/CLOCKS_PER_SEC  << " seconds" << endl; 
		} 
		 
		 
		 
		// Simple interface 
		void Tic() 
		{ 
			if(!active) 
			{ 
				elapsed = 0; 
				active = true;
				clockStart = clock();
			} 
			else 
			{ 
				Utility::Warning("This performance timer is already active!"); 
			} 
		} 
		 
		double Toc(bool display = true) 
		{ 
			if(active) 
			{ 
				elapsed += clock() - clockStart;
				active = false;
			} 
			if(display) 
			{ 
				cout << "Elapsed time: " << (double)elapsed/CLOCKS_PER_SEC << " seconds" << endl; 
			} 
			double tmp = (double)elapsed/CLOCKS_PER_SEC; 
			elapsed = 0; 
			return tmp; 
		} 
		 
		 
		 
		 
	}; 
 
 
 
}; //namespace 
 
 
 
#endif