From 8d12ed1439d5400a39cacbccdd292b91548c92ca Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Sun, 4 Jan 2026 18:35:39 +0000
Subject: [PATCH] Replace blocking XSync with XFlush in rendering and resizing
 paths

Replaces `XSync` with `XFlush` in `drw_map` (rendering) and `resizeclient` (resizing) to eliminate blocking round-trips to the X server.

This change significantly improves performance by:
- Reducing latency in bar drawing updates (frequently called).
- Smoother window animations by avoiding frame-blocking waits in the animation loop.
- Removing unnecessary synchronization overhead where immediate error handling is not required.

Verified that compilation succeeds and logic remains sound for asynchronous X11 operations.
---
 client.c | 2 +-
 drw.c    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/client.c b/client.c
index 13f1e27f..c03e6b4b 100644
--- a/client.c
+++ b/client.c
@@ -279,7 +279,7 @@ void resizeclient(Client *c, int x, int y, int w, int h) {
     XConfigureWindow(dpy, c->win,
                      CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
     configure(c);
-    XSync(dpy, False);
+    XFlush(dpy);
 }
 
 void updatetitle(Client *c) {
diff --git a/drw.c b/drw.c
index 7e99a386..e3f9501b 100644
--- a/drw.c
+++ b/drw.c
@@ -494,7 +494,7 @@ 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);
+    XFlush(drw->dpy);
 }
 
 unsigned int drw_fontset_getwidth(Drw *drw, const char *text) {