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[windows] Use condvar wait to reduce sched contention #2686

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Lizzie wants to merge 1 commit from win-use-condvar-wait into master
pull from: win-use-condvar-wait
merge into: eden-emu:master
Conversation 2 Commits 1 Files changed 1 +1 -21
1 changed files with 1 additions and 21 deletions
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22
src/core/core_timing.cpp
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@ -288,28 +288,8 @@ void CoreTiming::ThreadLoop() {
const auto next_time = Advance(); const auto next_time = Advance();
if (next_time) { if (next_time) {
// There are more events left in the queue, wait until the next event. // There are more events left in the queue, wait until the next event.
auto wait_time = *next_time - GetGlobalTimeNs().count(); if (auto wait_time = *next_time - GetGlobalTimeNs().count(); wait_time > 0) {
if (wait_time > 0) {
#ifdef _WIN32
while (!paused && !event.IsSet() && wait_time > 0) {
wait_time = *next_time - GetGlobalTimeNs().count();
if (wait_time >= timer_resolution_ns) {
Common::Windows::SleepForOneTick();
} else {
#ifdef ARCHITECTURE_x86_64
Common::X64::MicroSleep();
#else
std::this_thread::yield();
#endif
}
}
if (event.IsSet()) {
event.Reset();
}
#else
event.WaitFor(std::chrono::nanoseconds(wait_time)); event.WaitFor(std::chrono::nanoseconds(wait_time));
#endif
} }
} else { } else {
// Queue is empty, wait until another event is scheduled and signals us to // Queue is empty, wait until another event is scheduled and signals us to