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core_timing: Use higher precision sleeps on Windows

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The precision of sleep_for and wait_for is limited to 1-1.5ms on Windows.
Using SleepForOneTick() allows us to sleep for exactly one interval of the current timer resolution.
This allows us to take advantage of systems that have a timer resolution of 0.5ms to reduce CPU overhead in the event loop.
This commit is contained in:
Morph 2023-03-01 21:06:19 -05:00
parent 7e353082ac
commit bff1453282
5 changed files with 47 additions and 24 deletions
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6
src/core/core_timing.h
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@ -122,6 +122,9 @@ public:
/// Returns current time in emulated in Clock cycles
u64 GetClockTicks() const;
/// Returns current time in nanoseconds.
std::chrono::nanoseconds GetCPUTimeNs() const;
/// Returns current time in microseconds.
std::chrono::microseconds GetGlobalTimeUs() const;
@ -139,7 +142,8 @@ private:
void Reset();
std::unique_ptr<Common::WallClock> clock;
std::unique_ptr<Common::WallClock> cpu_clock;
std::unique_ptr<Common::WallClock> event_clock;
s64 global_timer = 0;