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| author | Marshall Mohror <mohror64@gmail.com> | 2022-07-06 12:42:01 -0500 |
|---|---|---|
| committer | Marshall Mohror <mohror64@gmail.com> | 2022-07-06 12:42:01 -0500 |
| commit | b2ad4dd189135be9a87af86619d6f5854525f7fa (patch) | |
| tree | d290710b8975e063db7c38ef497e46cfdc71301f /src/common/wall_clock.cpp | |
| parent | 770611fdf39f274ee9ccde9875e86cfeb79a3f6f (diff) | |
common/x64: Use TSC clock rate from CPUID when available
The current method used to estimate the TSC is fairly accurate - within a few kHz - but the exact value can be extracted from CPUID if available.
Diffstat (limited to 'src/common/wall_clock.cpp')
| -rw-r--r-- | src/common/wall_clock.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/common/wall_clock.cpp b/src/common/wall_clock.cpp index b4fb3a59f0..ae07f28116 100644 --- a/src/common/wall_clock.cpp +++ b/src/common/wall_clock.cpp @@ -67,7 +67,7 @@ std::unique_ptr<WallClock> CreateBestMatchingClock(u64 emulated_cpu_frequency, const auto& caps = GetCPUCaps(); u64 rtsc_frequency = 0; if (caps.invariant_tsc) { - rtsc_frequency = EstimateRDTSCFrequency(); + rtsc_frequency = caps.tsc_frequency ? caps.tsc_frequency : EstimateRDTSCFrequency(); } // Fallback to StandardWallClock if the hardware TSC does not have the precision greater than: |