From e8b706df2089adfd72e9191eba42da80257c496f Mon Sep 17 00:00:00 2001
From: Simon Gellis <simongellis@gmail.com>
Date: Sun, 10 Nov 2024 15:53:14 -0500
Subject: [PATCH] Use high-priority thread for emulation

---
 Cargo.lock  | 21 +++++++++++++++++++++
 Cargo.toml  |  1 +
 src/main.rs | 27 ++++++++++++++++-----------
 3 files changed, 38 insertions(+), 11 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 8db4c14..a61b2f2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1892,6 +1892,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "rustversion"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e819f2bc632f285be6d7cd36e25940d45b2391dd6d9b939e79de557f7014248"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -1972,6 +1978,7 @@ dependencies = [
  "pollster",
  "rtrb",
  "rubato",
+ "thread-priority",
  "wgpu",
  "winit",
 ]
@@ -2118,6 +2125,20 @@ dependencies = [
  "syn 2.0.87",
 ]
 
+[[package]]
+name = "thread-priority"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe075d7053dae61ac5413a34ea7d4913b6e6207844fd726bdd858b37ff72bf5"
+dependencies = [
+ "bitflags 2.6.0",
+ "cfg-if",
+ "libc",
+ "log",
+ "rustversion",
+ "winapi",
+]
+
 [[package]]
 name = "tiny-skia"
 version = "0.11.4"
diff --git a/Cargo.toml b/Cargo.toml
index 23abe96..73f97d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,6 +19,7 @@ num-traits = "0.2"
 pollster = "0.4"
 rtrb = "0.3"
 rubato = "0.16"
+thread-priority = "1"
 wgpu = "22.1"
 winit = "0.30"
 
diff --git a/src/main.rs b/src/main.rs
index 1b79b00..b8de1cf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,10 @@
-use std::{path::PathBuf, process, thread};
+use std::{path::PathBuf, process};
 
 use anyhow::Result;
 use app::App;
 use clap::Parser;
 use emulator::EmulatorBuilder;
+use thread_priority::{ThreadBuilder, ThreadPriority};
 use winit::event_loop::{ControlFlow, EventLoop};
 
 mod app;
@@ -26,16 +27,20 @@ fn main() -> Result<()> {
     if let Some(path) = args.rom {
         builder = builder.with_rom(&path);
     }
-    thread::spawn(move || {
-        let mut emulator = match builder.build() {
-            Ok(e) => e,
-            Err(err) => {
-                eprintln!("Error initializing emulator: {err}");
-                process::exit(1);
-            }
-        };
-        emulator.run();
-    });
+
+    ThreadBuilder::default()
+        .name("Emulator".to_owned())
+        .priority(ThreadPriority::Max)
+        .spawn_careless(move || {
+            let mut emulator = match builder.build() {
+                Ok(e) => e,
+                Err(err) => {
+                    eprintln!("Error initializing emulator: {err}");
+                    process::exit(1);
+                }
+            };
+            emulator.run();
+        })?;
 
     let event_loop = EventLoop::with_user_event().build().unwrap();
     event_loop.set_control_flow(ControlFlow::Poll);