From e1bce50d8ba139cf71b4225b4a416d84c65f3e0e Mon Sep 17 00:00:00 2001 From: Morph <39850852+Morph1984@users.noreply.github.com> Date: Tue, 21 Mar 2023 21:30:02 -0400 Subject: [PATCH] core_timing: Make use of MicroSleep for x64 CPUs For CPUs that support tpause, this should result in significant CPU power savings over thread yield in this spin wait. --- src/core/core_timing.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/core/core_timing.cpp b/src/core/core_timing.cpp index cd4df45228..4f2692b05c 100644 --- a/src/core/core_timing.cpp +++ b/src/core/core_timing.cpp @@ -10,6 +10,10 @@ #include "common/windows/timer_resolution.h" #endif +#ifdef ARCHITECTURE_x86_64 +#include "common/x64/cpu_wait.h" +#endif + #include "common/microprofile.h" #include "core/core_timing.h" #include "core/core_timing_util.h" @@ -269,7 +273,11 @@ void CoreTiming::ThreadLoop() { if (wait_time >= timer_resolution_ns) { Common::Windows::SleepForOneTick(); } else { +#ifdef ARCHITECTURE_x86_64 + Common::X64::MicroSleep(); +#else std::this_thread::yield(); +#endif } }