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⚡ Bolt: Remove synchronous X call in drawing path #183

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⚡ Bolt: Remove synchronous X call in drawing path #183

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3 changes: 3 additions & 0 deletions .jules/bolt.md
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## 2026-01-26 - XSync Overuse in Drawing Paths
**Learning:** The codebase uses `XSync` extensively after drawing operations (e.g., in `drw_map`, `resizeclient`), forcing synchronous round-trips to the X server. This is a significant performance bottleneck, especially for frequent operations like bar updates or animations.
**Action:** When optimizing X11 code, look for `XSync` calls in hot paths and verify if they can be safely removed (relying on implicit flushing or explicit `XFlush`).
1 change: 0 additions & 1 deletion drw.c
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Expand Up @@ -494,7 +494,6 @@ 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);
}

unsigned int drw_fontset_getwidth(Drw *drw, const char *text) {
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