| 112 | } // end namespace |
| 113 | |
| 114 | double ProcessCPUUsage() { |
| 115 | #if defined(BENCHMARK_OS_WINDOWS) |
| 116 | HANDLE proc = GetCurrentProcess(); |
| 117 | FILETIME creation_time; |
| 118 | FILETIME exit_time; |
| 119 | FILETIME kernel_time; |
| 120 | FILETIME user_time; |
| 121 | if (GetProcessTimes(proc, &creation_time, &exit_time, &kernel_time, |
| 122 | &user_time)) |
| 123 | return MakeTime(kernel_time, user_time); |
| 124 | DiagnoseAndExit("GetProccessTimes() failed"); |
| 125 | #elif defined(BENCHMARK_OS_QURT) |
| 126 | return static_cast<double>( |
| 127 | qurt_timer_timetick_to_us(qurt_timer_get_ticks())) * |
| 128 | 1.0e-6; |
| 129 | #elif defined(BENCHMARK_OS_EMSCRIPTEN) |
| 130 | // clock_gettime(CLOCK_PROCESS_CPUTIME_ID, ...) returns 0 on Emscripten. |
| 131 | // Use Emscripten-specific API. Reported CPU time would be exactly the |
| 132 | // same as total time, but this is ok because there aren't long-latency |
| 133 | // synchronous system calls in Emscripten. |
| 134 | return emscripten_get_now() * 1e-3; |
| 135 | #elif defined(CLOCK_PROCESS_CPUTIME_ID) && !defined(BENCHMARK_OS_MACOSX) |
| 136 | // FIXME We want to use clock_gettime, but its not available in MacOS 10.11. |
| 137 | // See https://github.com/google/benchmark/pull/292 |
| 138 | struct timespec spec; |
| 139 | if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &spec) == 0) |
| 140 | return MakeTime(spec); |
| 141 | DiagnoseAndExit("clock_gettime(CLOCK_PROCESS_CPUTIME_ID, ...) failed"); |
| 142 | #else |
| 143 | struct rusage ru; |
| 144 | if (getrusage(RUSAGE_SELF, &ru) == 0) return MakeTime(ru); |
| 145 | DiagnoseAndExit("getrusage(RUSAGE_SELF, ...) failed"); |
| 146 | #endif |
| 147 | } |
| 148 | |
| 149 | double ThreadCPUUsage() { |
| 150 | #if defined(BENCHMARK_OS_WINDOWS) |
no test coverage detected