// Public Domain by Christopher Diggins 
// http://www.ootl.org 

#ifndef OOTL_TIMER_HPP
#define OOTL_TIMER_HPP

// for clock() and CLOCKS_PER_SEC
#include <time.h>

namespace ootl
{  
	struct second_timer 
	{
		second_timer() : accumulate(0.0), cnt(0), last(click()) {
		}

		void start() {
			last = click();  
		}
	  
		void stop() {
			accumulate += last_elapsed();
			++cnt;
		}
	  
		int count() {
			return cnt;
		}
	  
		void pause() {
			accumulate += last_elapsed();
		}
	  
		void resume() {
			last = click();  
		}	
	  
		double total_elapsed() {
			return last_elapsed() + accumulate;
		}
	  
		double avg_elapsed() {
			return total_elapsed() / count();
		}
	  
		double last_elapsed() {
			return click() - last;
		}
	  
		double clear() {
			accumulate = 0.0;
			cnt = 0;
		}
	  
		double click() {
			return (double)clock() / (double)CLOCKS_PER_SEC;
		}
	  
	private:
		double last;
		double accumulate;
		int cnt;    
	};

	struct scoped_timer
	{
		FILE* mf;
		second_timer mtimer;
		
		scoped_timer(FILE* f = stdout)
			: mf(f), mtimer()
		{
		}	

		~scoped_timer()
		{
			double d = mtimer.last_elapsed();
			fprintf(mf, "time elaped = %f sec\n", d);
		}
	};

} 

#endif