bungeman@google.com | be9ad4e | 2011-06-07 19:16:02 +0000 | [diff] [blame^] | 1 | #include "BenchSysTimer_posix.h" |
| 2 | |
| 3 | //Time |
| 4 | #include <time.h> |
| 5 | |
| 6 | static double intervalInMSec(const timespec start_clock |
| 7 | , const timespec end_clock) |
| 8 | { |
| 9 | double duration_clock; |
| 10 | if ((end_clock.tv_nsec - start_clock.tv_nsec) < 0) { |
| 11 | duration_clock = (end_clock.tv_sec - start_clock.tv_sec-1)*1000; |
| 12 | duration_clock += (1000000000 + end_clock.tv_nsec - start_clock.tv_nsec) |
| 13 | / 1000000.0; |
| 14 | } else { |
| 15 | duration_clock = (end_clock.tv_sec - start_clock.tv_sec)*1000; |
| 16 | duration_clock += (end_clock.tv_nsec - start_clock.tv_nsec) / 1000000.0; |
| 17 | } |
| 18 | return duration_clock; |
| 19 | } |
| 20 | |
| 21 | void BenchSysTimer::startWall() { |
| 22 | if (-1 == clock_gettime(CLOCK_MONOTONIC, &this->fWall)) { |
| 23 | timespec none = {0, 0}; |
| 24 | this->fWall = none; |
| 25 | } |
| 26 | } |
| 27 | void BenchSysTimer::startCpu() { |
| 28 | if (-1 == clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &this->fCpu)) { |
| 29 | timespec none = {0, 0}; |
| 30 | this->fCpu = none; |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | double BenchSysTimer::endCpu() { |
| 35 | timespec end_cpu; |
| 36 | if (-1 == clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &end_cpu)) { |
| 37 | timespec none = {0, 0}; |
| 38 | end_cpu = none; |
| 39 | } |
| 40 | return intervalInMSec(this->fCpu, end_cpu); |
| 41 | } |
| 42 | |
| 43 | double BenchSysTimer::endWall() { |
| 44 | timespec end_wall; |
| 45 | if (-1 == clock_gettime(CLOCK_MONOTONIC, &end_wall)) { |
| 46 | timespec none = {0, 0}; |
| 47 | end_wall = none; |
| 48 | } |
| 49 | return intervalInMSec(this->fWall, end_wall); |
| 50 | } |