From c074e87f8d6053a473e774167ea9054950214c55 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 16 Jan 2026 18:45:34 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=20Bolt:=20Optimize=20drw=5Fmap=20by?=
 =?UTF-8?q?=20replacing=20XSync=20with=20XFlush?=
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Replaced XSync with XFlush in drw_map to reduce blocking round-trips to the X server.
This significantly improves performance during frequent redraws (e.g., status bar updates) by making the drawing non-blocking.
XSync waits for the X server to process the request, which is unnecessary for simple drawing operations where order is guaranteed by the protocol.
Added inline comment explaining the optimization.
---
 drw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drw.c b/drw.c
index 7e99a386..3f22213b 100644
--- a/drw.c
+++ b/drw.c
@@ -494,7 +494,8 @@ void drw_map(Drw *drw, Window win, int x, int y, unsigned int w,
     }
 
     XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
-    XSync(drw->dpy, False);
+    /* XSync forces a round-trip to the X server. XFlush is sufficient and non-blocking. */
+    XFlush(drw->dpy);
 }
 
 unsigned int drw_fontset_getwidth(Drw *drw, const char *text) {