PerformanceTool.h

//
//  PerformanceTool.h
//
//  Created by Morten Nobel-Jørgensen on 1/23/13.
//  Copyright (c) 2013 Morten Nobel-Joergensen. All rights reserved.
//
//  Create simple performance meassures in ms
//
//  Usage:
// 
//  PERF_INIT();
//  PERF(someHeavyFunctionCall());
//
//  Result:
//
//  file:   file.cpp    line:   123 time:   123 ms
//


#ifndef PerformanceTool_h
#define PerformanceTool_h

#include <iostream>

#if !defined(_WIN64) && !defined(_WIN32) 
#  include <sys/time.h>
typedef timeval sys_time_t;
inline void system_time(sys_time_t* t) {
    gettimeofday(t, NULL);
}
inline long long time_to_msec(const sys_time_t& t) {
    return t.tv_sec * 1000LL + t.tv_usec / 1000;
}
#else
#  include <sys/timeb.h>
typedef _timeb sys_time_t;
inline void system_time(sys_time_t* t) { _ftime(t); }
inline long long time_to_msec(const sys_time_t& t) {
    return t.time * 1000LL + t.millitm;
}
#endif

#define PERF_INIT() sys_time_t t; long long startTimeMs; long long endTimeMs;

#define PERF_(x,file,line) system_time(&t); \
                startTimeMs = time_to_msec(t); \
                x; \
                system_time(&t); \
                endTimeMs = time_to_msec(t); \
                std::cout << "file:\t"<<file << "\tline:\t"<<line<< "\ttime:\t"<<(endTimeMs - startTimeMs)<<"\tms"<<std::endl;

#define PERF(x) PERF_(x,__FILE__,__LINE__);


#endif // PerformanceTool_h