From 8e9bb002bc785a75fb455077800a6631ec8b9139 Mon Sep 17 00:00:00 2001
From: Dennis Ranke <dennis.ranke@gmail.com>
Date: Sun, 8 May 2022 16:59:59 +0200
Subject: [PATCH] improve sleep timer resolution on windows

---
 Cargo.lock        | 1 +
 Cargo.toml        | 5 +++--
 src/run_native.rs | 3 +++
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index e330f73..2ac8515 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2655,6 +2655,7 @@ dependencies = [
  "wasmtime",
  "wat",
  "webbrowser",
+ "winapi 0.3.9",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 6b67f29..54eb4e2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 
 [features]
 default = ["native", "browser"]
-native = ["wasmtime", "minifb", "cpal", "rubato"]
+native = ["wasmtime", "minifb", "cpal", "rubato", "winapi" ]
 browser = ["warp", "tokio", "tokio-stream", "webbrowser"]
 
 [dependencies]
@@ -26,4 +26,5 @@ tokio-stream = { version = "0.1.8", features = ["sync"], optional = true }
 webbrowser = { version = "0.6.0", optional = true }
 ansi_term = "0.12.1"
 cpal = { version = "0.13.5", optional = true }
-rubato = { version = "0.11.0", optional = true }
\ No newline at end of file
+rubato = { version = "0.11.0", optional = true }
+winapi = { version = "0.3.9", features = ["timeapi"], optional = true }
\ No newline at end of file
diff --git a/src/run_native.rs b/src/run_native.rs
index 8502253..fcd142b 100644
--- a/src/run_native.rs
+++ b/src/run_native.rs
@@ -59,6 +59,9 @@ struct UW8WatchDog {
 
 impl MicroW8 {
     pub fn new() -> Result<MicroW8> {
+        #[cfg(target_os = "windows")]
+        unsafe { winapi::um::timeapi::timeBeginPeriod(1); }
+
         let engine = wasmtime::Engine::new(wasmtime::Config::new().interruptable(true))?;
 
         let loader_module =