common: Implement a method to change the Windows timer resolution

This utilizes undocumented NtDll functions to change the current timer resolution from the default of 1ms.
This commit is contained in:
Morph 2023-03-01 19:27:10 -05:00
parent bd09c82521
commit 1ed49f92dd
3 changed files with 133 additions and 0 deletions

View file

@ -0,0 +1,38 @@
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <chrono>
namespace Common::Windows {
/// Returns the minimum (least precise) supported timer resolution in nanoseconds.
std::chrono::nanoseconds GetMinimumTimerResolution();
/// Returns the maximum (most precise) supported timer resolution in nanoseconds.
std::chrono::nanoseconds GetMaximumTimerResolution();
/// Returns the current timer resolution in nanoseconds.
std::chrono::nanoseconds GetCurrentTimerResolution();
/**
* Sets the current timer resolution.
*
* @param timer_resolution Timer resolution in nanoseconds.
*
* @returns The current timer resolution.
*/
std::chrono::nanoseconds SetCurrentTimerResolution(std::chrono::nanoseconds timer_resolution);
/**
* Sets the current timer resolution to the maximum supported timer resolution.
*
* @returns The current timer resolution.
*/
std::chrono::nanoseconds SetCurrentTimerResolutionToMaximum();
/// Sleep for one tick of the current timer resolution.
void SleepForOneTick();
} // namespace Common::Windows