LibThreading: Add ability to cancel ongoing BackgroundActions

Handlers of the BackgroundAction are responsible for checking if the action has been cancelled and returning early.
Author: https://github.com/SpencerCDixon Commit: 00f93b2545 Pull-request: https://github.com/SerenityOS/serenity/pull/8389
2025-08-27 12:46:06 +00:00 · 2021-07-02 10:34:19 -04:00 · 2021-07-02 10:34:19 -04:00 · 00f93b2545 · 2024-07-18 11:07:22 +09:00
commit 00f93b2545
parent 4a3958c8ae
4 changed files with 18 additions and 7 deletions
--- a/Userland/Services/WindowServer/Compositor.cpp
+++ b/Userland/Services/WindowServer/Compositor.cpp
@ -689,7 +689,7 @@ bool Compositor::set_wallpaper_mode(const String& mode)
 bool Compositor::set_wallpaper(const String& path, Function<void(bool)>&& callback)
 {
    Threading::BackgroundAction<RefPtr<Gfx::Bitmap>>::create(
-        [path] {
+        [path](auto&) {
            return Gfx::Bitmap::load_from_file(path);
        },