51 lines
1.7 KiB
C++
Executable File
51 lines
1.7 KiB
C++
Executable File
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "common/uint128.h"
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#include "common/x64/native_clock.h"
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#include "common/x64/rdtsc.h"
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namespace Common::X64 {
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NativeClock::NativeClock(u64 rdtsc_frequency_)
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: rdtsc_frequency{rdtsc_frequency_}, ns_rdtsc_factor{GetFixedPoint64Factor(NsRatio::den,
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rdtsc_frequency)},
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us_rdtsc_factor{GetFixedPoint64Factor(UsRatio::den, rdtsc_frequency)},
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ms_rdtsc_factor{GetFixedPoint64Factor(MsRatio::den, rdtsc_frequency)},
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cntpct_rdtsc_factor{GetFixedPoint64Factor(CNTFRQ, rdtsc_frequency)},
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gputick_rdtsc_factor{GetFixedPoint64Factor(GPUTickFreq, rdtsc_frequency)} {}
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void NativeClock::Reset() {
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start_ticks = FencedRDTSC();
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}
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std::chrono::nanoseconds NativeClock::GetTimeNS() const {
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return std::chrono::nanoseconds{MultiplyHigh(GetUptime(), ns_rdtsc_factor)};
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}
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std::chrono::microseconds NativeClock::GetTimeUS() const {
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return std::chrono::microseconds{MultiplyHigh(GetUptime(), us_rdtsc_factor)};
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}
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std::chrono::milliseconds NativeClock::GetTimeMS() const {
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return std::chrono::milliseconds{MultiplyHigh(GetUptime(), ms_rdtsc_factor)};
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}
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s64 NativeClock::GetCNTPCT() const {
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return MultiplyHigh(GetUptime() - start_ticks, cntpct_rdtsc_factor);
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}
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s64 NativeClock::GetGPUTick() const {
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return MultiplyHigh(GetUptime() - start_ticks, gputick_rdtsc_factor);
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}
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s64 NativeClock::GetUptime() const {
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return static_cast<s64>(FencedRDTSC());
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}
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bool NativeClock::IsNative() const {
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return true;
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}
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} // namespace Common::X64
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