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[common/wall_clock] fix invariant RDTSC divide by 0 (#3961)
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Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3961
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
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lizzie 2026-05-17 02:17:11 +02:00 • committed by crueter
parent 8330940eca
commit 5aba461cb3
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1 changed files with 6 additions and 6 deletions
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12
src/common/wall_clock.cpp
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@ -22,11 +22,11 @@ namespace Common {
WallClock::WallClock(bool invariant_, u64 rdtsc_frequency_) noexcept
: invariant{invariant_}
, rdtsc_frequency{rdtsc_frequency_}
, ns_rdtsc_factor{GetFixedPoint64Factor(NsRatio::den, rdtsc_frequency_)}
, us_rdtsc_factor{GetFixedPoint64Factor(UsRatio::den, rdtsc_frequency_)}
, ms_rdtsc_factor{GetFixedPoint64Factor(MsRatio::den, rdtsc_frequency_)}
, cntpct_rdtsc_factor{GetFixedPoint64Factor(CNTFRQ, rdtsc_frequency_)}
, gputick_rdtsc_factor{GetFixedPoint64Factor(GPUTickFreq, rdtsc_frequency_)}
, ns_rdtsc_factor{invariant_ ? 0 : GetFixedPoint64Factor(NsRatio::den, rdtsc_frequency_)}
, us_rdtsc_factor{invariant_ ? 0 : GetFixedPoint64Factor(UsRatio::den, rdtsc_frequency_)}
, ms_rdtsc_factor{invariant_ ? 0 : GetFixedPoint64Factor(MsRatio::den, rdtsc_frequency_)}
, cntpct_rdtsc_factor{invariant_ ? 0 : GetFixedPoint64Factor(CNTFRQ, rdtsc_frequency_)}
, gputick_rdtsc_factor{invariant_ ? 0 : GetFixedPoint64Factor(GPUTickFreq, rdtsc_frequency_)}
{}
std::chrono::nanoseconds WallClock::GetTimeNS() const {
@ -186,7 +186,7 @@ bool WallClock::IsNative() const {
WallClock CreateOptimalClock() noexcept {
#if defined(ARCHITECTURE_x86_64)
auto const& caps = GetCPUCaps();
return WallClock(!(caps.invariant_tsc && caps.tsc_frequency >= std::nano::den), std::max<u64>(caps.tsc_frequency, 1));
return WallClock(!(caps.invariant_tsc && caps.tsc_frequency >= std::nano::den), caps.tsc_frequency);
#elif defined(HAS_NCE)
return WallClock(false, 1);
#else