diff options
Diffstat (limited to 'libcxx/utils/google-benchmark/src/sysinfo.cc')
| -rw-r--r-- | libcxx/utils/google-benchmark/src/sysinfo.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libcxx/utils/google-benchmark/src/sysinfo.cc b/libcxx/utils/google-benchmark/src/sysinfo.cc index e10e19df086..b5b9851f5a9 100644 --- a/libcxx/utils/google-benchmark/src/sysinfo.cc +++ b/libcxx/utils/google-benchmark/src/sysinfo.cc @@ -239,6 +239,7 @@ void InitializeSystemInfo() { } // TODO: also figure out cpuinfo_num_cpus + #elif defined BENCHMARK_OS_WINDOWS // In NT, read MHz from the registry. If we fail to do so or we're in win9x // then make a crude estimate. @@ -251,7 +252,12 @@ void InitializeSystemInfo() { cpuinfo_cycles_per_second = static_cast<double>((int64_t)data * (int64_t)(1000 * 1000)); // was mhz else cpuinfo_cycles_per_second = static_cast<double>(EstimateCyclesPerSecond()); -// TODO: also figure out cpuinfo_num_cpus + + SYSTEM_INFO sysinfo; + // Use memset as opposed to = {} to avoid GCC missing initializer false positives. + std::memset(&sysinfo, 0, sizeof(SYSTEM_INFO)); + GetSystemInfo(&sysinfo); + cpuinfo_num_cpus = sysinfo.dwNumberOfProcessors; // number of logical processors in the current group #elif defined BENCHMARK_OS_MACOSX // returning "mach time units" per second. the current number of elapsed |
