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// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/uint128.h"
#include "common/x64/native_clock.h"
#include "common/x64/rdtsc.h"
namespace Common::X64 {
NativeClock::NativeClock(u64 rdtsc_frequency_)
: start_ticks{FencedRDTSC()}, 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)} {}
std::chrono::nanoseconds NativeClock::GetTimeNS() const {
return std::chrono::nanoseconds{MultiplyHigh(GetHostTicksElapsed(), ns_rdtsc_factor)};
}
std::chrono::microseconds NativeClock::GetTimeUS() const {
return std::chrono::microseconds{MultiplyHigh(GetHostTicksElapsed(), us_rdtsc_factor)};
}
std::chrono::milliseconds NativeClock::GetTimeMS() const {
return std::chrono::milliseconds{MultiplyHigh(GetHostTicksElapsed(), ms_rdtsc_factor)};
}
u64 NativeClock::GetCNTPCT() const {
return MultiplyHigh(GetHostTicksElapsed(), cntpct_rdtsc_factor);
}
u64 NativeClock::GetGPUTick() const {
return MultiplyHigh(GetHostTicksElapsed(), gputick_rdtsc_factor);
}
u64 NativeClock::GetHostTicksNow() const {
return FencedRDTSC();
}
u64 NativeClock::GetHostTicksElapsed() const {
return FencedRDTSC() - start_ticks;
}
bool NativeClock::IsNative() const {
return true;
}
} // namespace Common::X64
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