From b5950d9b27f28d4b62f533b4df728e1170aacd62 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Sun, 11 Jul 2021 09:59:25 +0200
Subject: [PATCH] wayland: purge CSD pixmaps when destroying the CSDs
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CSDs aren’t typically toggled on and off. Thus, when disabled,
immediately purge their corresponding pixmap buffers, to free up some
memory, and release file descriptors.
---
 wayland.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/wayland.c b/wayland.c
index ecc4f31e..bea6fb52 100644
--- a/wayland.c
+++ b/wayland.c
@@ -51,8 +51,13 @@ csd_instantiate(struct wl_window *win)
 static void
 csd_destroy(struct wl_window *win)
 {
-    for (size_t i = 0; i < ALEN(win->csd.surface); i++)
+    struct terminal *term = win->term;
+    struct wl_shm *shm = term->wl->shm;
+
+    for (size_t i = 0; i < ALEN(win->csd.surface); i++) {
         wayl_win_subsurface_destroy(&win->csd.surface[i]);
+        shm_purge(shm, shm_cookie_csd(term, i));
+    }
 }
 
 static void