51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
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#include "BenchSysTimer_posix.h"
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//Time
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#include <time.h>
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static double intervalInMSec(const timespec start_clock
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, const timespec end_clock)
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{
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double duration_clock;
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if ((end_clock.tv_nsec - start_clock.tv_nsec) < 0) {
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duration_clock = (end_clock.tv_sec - start_clock.tv_sec-1)*1000;
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duration_clock += (1000000000 + end_clock.tv_nsec - start_clock.tv_nsec)
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/ 1000000.0;
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} else {
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duration_clock = (end_clock.tv_sec - start_clock.tv_sec)*1000;
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duration_clock += (end_clock.tv_nsec - start_clock.tv_nsec) / 1000000.0;
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}
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return duration_clock;
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}
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void BenchSysTimer::startWall() {
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if (-1 == clock_gettime(CLOCK_MONOTONIC, &this->fWall)) {
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timespec none = {0, 0};
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this->fWall = none;
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}
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}
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void BenchSysTimer::startCpu() {
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if (-1 == clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &this->fCpu)) {
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timespec none = {0, 0};
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this->fCpu = none;
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}
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}
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double BenchSysTimer::endCpu() {
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timespec end_cpu;
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if (-1 == clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &end_cpu)) {
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timespec none = {0, 0};
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end_cpu = none;
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}
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return intervalInMSec(this->fCpu, end_cpu);
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}
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double BenchSysTimer::endWall() {
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timespec end_wall;
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if (-1 == clock_gettime(CLOCK_MONOTONIC, &end_wall)) {
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timespec none = {0, 0};
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end_wall = none;
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}
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return intervalInMSec(this->fWall, end_wall);
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}
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