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 } 51
