| #include "BenchSysTimer_mach.h" |
| |
| //Time |
| #include <mach/mach.h> |
| #include <mach/mach_time.h> |
| |
| static time_value_t macCpuTime() { |
| mach_port_t task = mach_task_self(); |
| if (task == MACH_PORT_NULL) { |
| time_value_t none = {0, 0}; |
| return none; |
| } |
| |
| task_thread_times_info thread_info_data; |
| mach_msg_type_number_t thread_info_count = TASK_THREAD_TIMES_INFO_COUNT; |
| if (KERN_SUCCESS != task_info(task, |
| TASK_THREAD_TIMES_INFO, |
| reinterpret_cast<task_info_t>(&thread_info_data), |
| &thread_info_count)) |
| { |
| time_value_t none = {0, 0}; |
| return none; |
| } |
| |
| time_value_add(&thread_info_data.user_time, &thread_info_data.system_time) |
| return thread_info_data.user_time; |
| } |
| |
| static double intervalInMSec(const time_value_t start_clock |
| , const time_value_t end_clock) |
| { |
| double duration_clock; |
| if ((end_clock.microseconds - start_clock.microseconds) < 0) { |
| duration_clock = (end_clock.seconds - start_clock.seconds-1)*1000; |
| duration_clock += (1000000 |
| + end_clock.microseconds |
| - start_clock.microseconds) / 1000.0; |
| } else { |
| duration_clock = (end_clock.seconds - start_clock.seconds)*1000; |
| duration_clock += (end_clock.microseconds - start_clock.microseconds) |
| / 1000.0; |
| } |
| return duration_clock; |
| } |
| |
| void BenchSysTimer::startWall() { |
| this->fStartWall = mach_absolute_time(); |
| } |
| void BenchSysTimer::startCpu() { |
| this->fStartCpu = macCpuTime(); |
| } |
| |
| double BenchSysTimer::endCpu() { |
| time_value_t end_cpu = macCpuTime(); |
| return intervalInMSec(this->fStartCpu, end_cpu); |
| } |
| double BenchSysTimer::endWall() { |
| uint64_t end_wall = mach_absolute_time(); |
| |
| uint64_t elapsed = end_wall - this->fStartWall; |
| mach_timebase_info_data_t sTimebaseInfo; |
| if (KERN_SUCCESS != mach_timebase_info(&sTimebaseInfo)) { |
| return 0; |
| } else { |
| uint64_t elapsedNano = elapsed * sTimebaseInfo.numer |
| / sTimebaseInfo.denom; |
| return elapsedNano / 1000000; |
| } |
| } |