From a048263fd6d01a5c8954933ac727545e4c502c0a Mon Sep 17 00:00:00 2001
From: Rekai Musuka <rekai@musuka.dev>
Date: Tue, 23 May 2023 02:42:35 -0500
Subject: [PATCH] chore: make use of std.atomic.spinLoopHint()

---
 src/core/emu.zig | 7 ++++++-
 src/platform.zig | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/core/emu.zig b/src/core/emu.zig
index e009a67..94fb39d 100644
--- a/src/core/emu.zig
+++ b/src/core/emu.zig
@@ -140,6 +140,10 @@ fn audioSync(audio_sync: bool, stream: *SDL.SDL_AudioStream, is_buffer_full: *bo
     // If Busy is false, there's no need to sync here
     if (!still_full) return;
 
+    // TODO: Refactor!!!!
+    // while (SDL.SDL_AudioStreamAvailable(stream) > sample_size * max_buf_size >> 1)
+    //     std.atomic.spinLoopHint();
+
     while (true) {
         still_full = SDL.SDL_AudioStreamAvailable(stream) > sample_size * max_buf_size >> 1;
         if (!audio_sync or !still_full) break;
@@ -184,7 +188,8 @@ fn sleep(timer: *Timer, wake_time: u64) ?u64 {
 }
 
 fn spinLoop(timer: *Timer, wake_time: u64) void {
-    while (true) if (timer.read() > wake_time) break;
+    while (timer.read() < wake_time)
+        std.atomic.spinLoopHint();
 }
 
 pub const EmuThing = struct {
diff --git a/src/platform.zig b/src/platform.zig
index 5922768..6a5ee6b 100644
--- a/src/platform.zig
+++ b/src/platform.zig
@@ -216,6 +216,7 @@ pub const Gui = struct {
                         .Standard => blk: {
                             const limit = 15; // TODO: What should this be?
 
+                            // TODO: learn more about std.atomic.spinLoopHint();
                             for (0..limit) |_| {
                                 const message = channel.gui.pop() orelse continue;