From 5328df6534b9fa2ca83cbbac013ef1e094e11907 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Sat, 9 Jan 2010 09:47:45 -0800
Subject: runtime: check for preemption due to garbage collection 	in
 various already expensive routines.

helps keep cpu utilization up when GOMAXPROCS > 1,
but not a full solution.

http://groups.google.com/group/golang-nuts/t/7a9535c4136d3e2

R=r
CC=golang-dev
https://golang.org/cl/184043
---
 src/pkg/runtime/runtime.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/pkg/runtime/runtime.h')

diff --git a/src/pkg/runtime/runtime.h b/src/pkg/runtime/runtime.h
index 2d956ea980..ff0eab6b76 100644
--- a/src/pkg/runtime/runtime.h
+++ b/src/pkg/runtime/runtime.h
@@ -316,6 +316,7 @@ extern	int32	gomaxprocs;
 extern	int32	panicking;
 extern	int32	maxround;
 extern	int32	fd;	// usually 1; set to 2 when panicking
+extern	int32	gcwaiting;		// gc is waiting to run
 int8*	goos;
 
 /*
-- 
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