agunashe
113 строки
2.6 KiB
C++
113 строки
2.6 KiB
C++
/* Copyright (c) 2010 - 2021 Advanced Micro Devices, Inc.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE. */
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#include "Timer.h"
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#ifdef ATI_OS_WIN
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#include <windows.h>
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#endif
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#ifdef ATI_OS_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 ATI_OS_WIN
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QueryPerformanceFrequency((LARGE_INTEGER *)&_freq);
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#endif
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#ifdef ATI_OS_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 ATI_OS_WIN
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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 ATI_OS_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 ATI_OS_WIN
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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 ATI_OS_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 ATI_OS_WIN
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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 ATI_OS_WIN
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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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