From 9ffaf56630587e511e6d5ed0c633582b1164d579 Mon Sep 17 00:00:00 2001
From: zeromus <zeromus@zeromus.org>
Date: Sat, 27 Aug 2011 18:06:23 +0000
Subject: [PATCH] throttle timing refinement

---
 BizHawk.MultiClient/Throttle.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/BizHawk.MultiClient/Throttle.cs b/BizHawk.MultiClient/Throttle.cs
index dfe4032789..ae75641cbd 100644
--- a/BizHawk.MultiClient/Throttle.cs
+++ b/BizHawk.MultiClient/Throttle.cs
@@ -129,6 +129,9 @@ namespace BizHawk.MultiClient
 		[DllImport("winmm.dll", EntryPoint = "timeBeginPeriod")]
 		static extern uint timeBeginPeriod(uint uMilliseconds);
 
+		[DllImport("kernel32.dll")]
+		static extern bool SwitchToThread();
+
 		static int tmethod;
 		static ulong afsfreq;
 		static ulong tfreq;
@@ -319,9 +322,8 @@ namespace BizHawk.MultiClient
 				}
 				else if (sleepy > 0) // spin for <1 millisecond waits
 				{
-					Thread.Sleep(0);
+					SwitchToThread(); // limit to other threads on the same CPU core for other short waits
 				}
-				//SwitchToThread(); // limit to other threads on the same CPU core for other short waits
 				goto waiter;
 			}
 			if ((ttime - ltime) >= (tfreq * 4 / desiredfps))