OLD | NEW |
(Empty) | |
| 1 |
| 2 /* |
| 3 * Copyright 2011 Google Inc. |
| 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. |
| 7 */ |
| 8 #include "BenchSysTimer_posix.h" |
| 9 |
| 10 //Time |
| 11 #include <time.h> |
| 12 |
| 13 static double intervalInMSec(const timespec start_clock |
| 14 , const timespec end_clock) |
| 15 { |
| 16 double duration_clock; |
| 17 if ((end_clock.tv_nsec - start_clock.tv_nsec) < 0) { |
| 18 duration_clock = (end_clock.tv_sec - start_clock.tv_sec-1)*1000; |
| 19 duration_clock += (1000000000 + end_clock.tv_nsec - start_clock.tv_nsec) |
| 20 / 1000000.0; |
| 21 } else { |
| 22 duration_clock = (end_clock.tv_sec - start_clock.tv_sec)*1000; |
| 23 duration_clock += (end_clock.tv_nsec - start_clock.tv_nsec) / 1000000.0; |
| 24 } |
| 25 return duration_clock; |
| 26 } |
| 27 |
| 28 void BenchSysTimer::startWall() { |
| 29 if (-1 == clock_gettime(CLOCK_MONOTONIC, &this->fWall)) { |
| 30 timespec none = {0, 0}; |
| 31 this->fWall = none; |
| 32 } |
| 33 } |
| 34 void BenchSysTimer::startCpu() { |
| 35 if (-1 == clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &this->fCpu)) { |
| 36 timespec none = {0, 0}; |
| 37 this->fCpu = none; |
| 38 } |
| 39 } |
| 40 |
| 41 double BenchSysTimer::endCpu() { |
| 42 timespec end_cpu; |
| 43 if (-1 == clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &end_cpu)) { |
| 44 timespec none = {0, 0}; |
| 45 end_cpu = none; |
| 46 } |
| 47 return intervalInMSec(this->fCpu, end_cpu); |
| 48 } |
| 49 |
| 50 double BenchSysTimer::endWall() { |
| 51 timespec end_wall; |
| 52 if (-1 == clock_gettime(CLOCK_MONOTONIC, &end_wall)) { |
| 53 timespec none = {0, 0}; |
| 54 end_wall = none; |
| 55 } |
| 56 return intervalInMSec(this->fWall, end_wall); |
| 57 } |
OLD | NEW |