Danylo Lytovchenko
98 line
1.6 KiB
C++
98 line
1.6 KiB
C++
#include "timer.h"
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#include <stdlib.h>
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#define VC_EXTRALEAN
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#include <windows.h>
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#pragma comment(lib, "user32")
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#endif
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#ifdef __linux__
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#include <time.h>
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#define NANOSECONDS_PER_SEC 1000000000
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#endif
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CPerfCounter::CPerfCounter() : _clocks(0), _start(0) {
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#ifdef _WIN32
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QueryPerformanceFrequency((LARGE_INTEGER*)&_freq);
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#endif
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#ifdef __linux__
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_freq = NANOSECONDS_PER_SEC;
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#endif
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}
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CPerfCounter::~CPerfCounter() {
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// EMPTY!
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}
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void CPerfCounter::Start(void) {
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#ifdef _WIN32
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if (_start) {
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MessageBox(NULL, "Bad Perf Counter Start", "Error", MB_OK);
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exit(0);
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}
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QueryPerformanceCounter((LARGE_INTEGER*)&_start);
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#endif
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#ifdef __linux__
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struct timespec s;
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clock_gettime(CLOCK_MONOTONIC, &s);
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_start = (i64)s.tv_sec * NANOSECONDS_PER_SEC + (i64)s.tv_nsec;
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#endif
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}
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void CPerfCounter::Stop(void) {
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i64 n;
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#ifdef _WIN32
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if (!_start) {
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MessageBox(NULL, "Bad Perf Counter Stop", "Error", MB_OK);
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exit(0);
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}
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QueryPerformanceCounter((LARGE_INTEGER*)&n);
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#endif
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#ifdef __linux__
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struct timespec s;
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clock_gettime(CLOCK_MONOTONIC, &s);
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n = (i64)s.tv_sec * NANOSECONDS_PER_SEC + (i64)s.tv_nsec;
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#endif
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n -= _start;
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_start = 0;
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_clocks += n;
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}
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void CPerfCounter::Reset(void) {
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#ifdef _WIN32
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if (_start) {
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MessageBox(NULL, "Bad Perf Counter Reset", "Error", MB_OK);
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exit(0);
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}
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#endif
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_clocks = 0;
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}
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double CPerfCounter::GetElapsedTime(void) {
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#ifdef _WIN32
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if (_start) {
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MessageBox(NULL, "Trying to get time while still running.", "Error", MB_OK);
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exit(0);
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}
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#endif
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return (double)_clocks / (double)_freq;
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}
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