core_timing: Remove GetCurrentTimerResolution in CoreTiming loop

Other programs may change this value, but if thousands of syscalls in this loop is undesirable, then we can just set this once.

1 files changed, 6 insertions, 3 deletions

diff --git a/src/core/core_timing.cpp b/src/core/core_timing.cpp
index 4f0a3f8eab..e6112a3c9a 100644
--- a/src/core/core_timing.cpp
+++ b/src/core/core_timing.cpp
@@ -253,9 +253,6 @@ void CoreTiming::ThreadLoop() {
                 auto wait_time = *next_time - GetGlobalTimeNs().count();
                 if (wait_time > 0) {
 #ifdef _WIN32
-                    const auto timer_resolution_ns =
-                        Common::Windows::GetCurrentTimerResolution().count();
-
                     while (!paused && !event.IsSet() && wait_time > 0) {
                         wait_time = *next_time - GetGlobalTimeNs().count();
 
@@ -316,4 +313,10 @@ std::chrono::microseconds CoreTiming::GetGlobalTimeUs() const {
     return std::chrono::microseconds{Common::WallClock::CPUTickToUS(cpu_ticks)};
 }
 
+#ifdef _WIN32
+void CoreTiming::SetTimerResolutionNs(std::chrono::nanoseconds ns) {
+    timer_resolution_ns = ns.count();
+}
+#endif
+
 } // namespace Core::Timing