diff --git a/stepmania/src/archutils/Darwin/DarwinThreadHelpers.cpp b/stepmania/src/archutils/Darwin/DarwinThreadHelpers.cpp
index cb04665cf9..6c7529b2e8 100644
--- a/stepmania/src/archutils/Darwin/DarwinThreadHelpers.cpp
+++ b/stepmania/src/archutils/Darwin/DarwinThreadHelpers.cpp
@@ -1,16 +1,18 @@
 #include <mach/mach_types.h>
 #include <mach/thread_act.h>
 #include <mach/mach_init.h>
+#include <mach/mach_error.h>
 #include "Backtrace.h"
+#include "RageLog.h"
 
-bool SuspendThread(uint64_t threadHandle)
+bool SuspendThread( uint64_t threadHandle )
 {
-	return !thread_suspend(thread_act_t(threadHandle));
+	return !thread_suspend( thread_act_t(threadHandle) );
 }
 
-bool ResumeThread(uint64_t threadHandle)
+bool ResumeThread( uint64_t threadHandle )
 {
-	return !thread_resume(thread_act_t(threadHandle));
+	return !thread_resume( thread_act_t(threadHandle) );
 }
 
 uint64_t GetCurrentThreadId()
@@ -18,27 +20,37 @@ uint64_t GetCurrentThreadId()
 	return mach_thread_self();
 }
 
-bool GetThreadBacktraceContext(uint64_t iID, BacktraceContext *ctx)
+bool GetThreadBacktraceContext( uint64_t iID, BacktraceContext *ctx )
 {
 	/* Can't GetThreadBacktraceContext the current thread. */
 	ASSERT(iID != GetCurrentThreadId());
 
 	SuspendThread( iID );
 
-	thread_act_t thread = thread_act_t(iID);
+	thread_act_t thread = thread_act_t( iID );
 	ppc_thread_state state;
 	mach_msg_type_number_t count = PPC_THREAD_STATE_COUNT;
 	
-	if (thread_get_state(thread, PPC_THREAD_STATE, thread_state_t(&state),
-						 &count))
+	if( thread_get_state(thread, PPC_THREAD_STATE, thread_state_t(&state), &count) )
 		return false;
 	ctx->FramePtr = (void *)state.r1;
 	ctx->PC = (void *)state.srr0;
 	return true;
 }
+
+void SetThreadPrecedence( int prec )
+{
+	thread_precedence_policy po = { prec };
+	kern_return_t ret = thread_policy_set( mach_thread_self(), THREAD_PRECEDENCE_POLICY,
+										   (int *)&po, THREAD_PRECEDENCE_POLICY_COUNT );
+	
+	if( ret != KERN_SUCCESS )
+		LOG->Warn( "Couldn't set the precedence for the input thread: %s",
+				   mach_error_string(ret) );
+}
 	
 /*
- * (c) 2004 Steve Checkoway
+ * (c) 2004, 2005 Steve Checkoway
  * All rights reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
diff --git a/stepmania/src/archutils/Darwin/DarwinThreadHelpers.h b/stepmania/src/archutils/Darwin/DarwinThreadHelpers.h
index e837254fa6..7b82bd393c 100644
--- a/stepmania/src/archutils/Darwin/DarwinThreadHelpers.h
+++ b/stepmania/src/archutils/Darwin/DarwinThreadHelpers.h
@@ -1,14 +1,15 @@
 #ifndef DARWIN_THREAD_HELPERS_H
 #define DARWIN_THREAD_HELPERS_H
 
-bool SuspendThread(uint64_t threadHandle);
-bool ResumeThread(uint64_t threadHandle);
+bool SuspendThread( uint64_t threadHandle );
+bool ResumeThread( uint64_t threadHandle );
 uint64_t GetCurrentThreadId();
+void SetThreadPrecedence( int prec );
 
 #endif
 
 /*
- * (c) 2004 Steve Checkoway
+ * (c) 2004, 2005 Steve Checkoway
  * All rights reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a