code: drawterm

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wayland: ensure we grab the drawlock for writes to the frame buffer.

--- a/gui-wl/wl-screen.c

+++ b/gui-wl/wl-screen.c

@@ -114,11 +114,12 @@

 	gscreen->r = r;

 	rectclip(&(gscreen->clipr), gscreen->r);

-	wldrawcursor(wl, &arrow);

 	wl->runing = 1;

 	kproc("wldispatch", dispatchproc, wl);

 	terminit();

+	qlock(&drawlock);

 	wlflush(wl);

+	qunlock(&drawlock);

 	return wl;

 }

@@ -169,7 +170,9 @@

 void

 setcursor(void)

 {

-	wldrawcursor(snarfwin, &cursor);

+	qlock(&drawlock);

+	wldrawcursor(snarfwin, &arrow);

+	qunlock(&drawlock);

 }

 void