From 7e353082ac79bef59d48602f9196cf804d3dfc4f Mon Sep 17 00:00:00 2001
From: Morph <39850852+Morph1984@users.noreply.github.com>
Date: Wed, 1 Mar 2023 20:07:59 -0500
Subject: [PATCH] main: (Windows) Set the current timer resolution to the
 maximum

Increases the precision of thread sleeps on Windows.
---
 src/yuzu/main.cpp     | 9 +++++++++
 src/yuzu_cmd/yuzu.cpp | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/src/yuzu/main.cpp b/src/yuzu/main.cpp
index f233b065e..c092507f4 100644
--- a/src/yuzu/main.cpp
+++ b/src/yuzu/main.cpp
@@ -91,6 +91,9 @@ static FileSys::VirtualFile VfsDirectoryCreateFileWrapper(const FileSys::Virtual
 #include "common/microprofile.h"
 #include "common/scm_rev.h"
 #include "common/scope_exit.h"
+#ifdef _WIN32
+#include "common/windows/timer_resolution.h"
+#endif
 #ifdef ARCHITECTURE_x86_64
 #include "common/x64/cpu_detect.h"
 #endif
@@ -377,6 +380,12 @@ GMainWindow::GMainWindow(std::unique_ptr<Config> config_, bool has_broken_vulkan
     LOG_INFO(Frontend, "Host RAM: {:.2f} GiB",
              Common::GetMemInfo().TotalPhysicalMemory / f64{1_GiB});
     LOG_INFO(Frontend, "Host Swap: {:.2f} GiB", Common::GetMemInfo().TotalSwapMemory / f64{1_GiB});
+#ifdef _WIN32
+    LOG_INFO(Frontend, "Host Timer Resolution: {:.4f} ms",
+             std::chrono::duration_cast<std::chrono::duration<f64, std::milli>>(
+                 Common::Windows::SetCurrentTimerResolutionToMaximum())
+                 .count());
+#endif
     UpdateWindowTitle();
 
     show();
diff --git a/src/yuzu_cmd/yuzu.cpp b/src/yuzu_cmd/yuzu.cpp
index 77edd58ca..5f39ece32 100644
--- a/src/yuzu_cmd/yuzu.cpp
+++ b/src/yuzu_cmd/yuzu.cpp
@@ -42,6 +42,8 @@
 #include <windows.h>
 
 #include <shellapi.h>
+
+#include "common/windows/timer_resolution.h"
 #endif
 
 #undef _UNICODE
@@ -314,6 +316,8 @@ int main(int argc, char** argv) {
 
 #ifdef _WIN32
     LocalFree(argv_w);
+
+    Common::Windows::SetCurrentTimerResolutionToMaximum();
 #endif
 
     MicroProfileOnThreadCreate("EmuThread");