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// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <chrono>
#include <memory>
#include "common/common_types.h"
namespace Common {
class WallClock {
public:
static constexpr u64 NS_RATIO = 1'000'000'000;
static constexpr u64 US_RATIO = 1'000'000;
static constexpr u64 MS_RATIO = 1'000;
virtual ~WallClock() = default;
/// Returns current wall time in nanoseconds
[[nodiscard]] virtual std::chrono::nanoseconds GetTimeNS() = 0;
/// Returns current wall time in microseconds
[[nodiscard]] virtual std::chrono::microseconds GetTimeUS() = 0;
/// Returns current wall time in milliseconds
[[nodiscard]] virtual std::chrono::milliseconds GetTimeMS() = 0;
/// Returns current wall time in emulated clock cycles
[[nodiscard]] virtual u64 GetClockCycles() = 0;
/// Returns current wall time in emulated cpu cycles
[[nodiscard]] virtual u64 GetCPUCycles() = 0;
virtual void Pause(bool is_paused) = 0;
/// Tells if the wall clock, uses the host CPU's hardware clock
[[nodiscard]] bool IsNative() const {
return is_native;
}
protected:
explicit WallClock(u64 emulated_cpu_frequency_, u64 emulated_clock_frequency_, bool is_native_)
: emulated_cpu_frequency{emulated_cpu_frequency_},
emulated_clock_frequency{emulated_clock_frequency_}, is_native{is_native_} {}
u64 emulated_cpu_frequency;
u64 emulated_clock_frequency;
private:
bool is_native;
};
[[nodiscard]] std::unique_ptr<WallClock> CreateBestMatchingClock(u64 emulated_cpu_frequency,
u64 emulated_clock_frequency);
[[nodiscard]] std::unique_ptr<WallClock> CreateStandardWallClock(u64 emulated_cpu_frequency,
u64 emulated_clock_frequency);
} // namespace Common
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