From 587933c16132d880a06ff99bd087e64a3a04975e Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Sat, 25 Jan 2020 14:33:20 -0500
Subject: devdraw: use global drawlk instead of per-client

Setting up for a real window system.
---
 src/cmd/devdraw/devdraw.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/cmd/devdraw/devdraw.h')

diff --git a/src/cmd/devdraw/devdraw.h b/src/cmd/devdraw/devdraw.h
index 1dac2d50..261d04d1 100644
--- a/src/cmd/devdraw/devdraw.h
+++ b/src/cmd/devdraw/devdraw.h
@@ -56,6 +56,8 @@ struct ClientImpl
 	void (*rpc_flush)(Client*, Rectangle);
 };
 
+extern QLock drawlk;
+
 struct Client
 {
 	int		rfd;
@@ -69,10 +71,9 @@ struct Client
 
 	char*	wsysid;
 
-	// drawlk protects the draw data structures.
+	// drawlk protects the draw data structures for all clients.
 	// It can be acquired by an RPC thread or a graphics thread
 	// but must not be held on one thread while waiting for the other.
-	QLock	drawlk;
 	/*Ref		r;*/
 	DImage*		dimage[NHASH];
 	CScreen*	cscreen;
-- 
cgit v1.2.3