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LibCore: Expose register_process and implement for Windows event loop

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This is the closest Windows equivalent to integrating process exit
handlers into the event loop.

Linux could also integrate register_process() into the poll() based
Unix event loop via the SYS_pidfd_open syscall; however, macOS requires
a kqueue. So for now register_process will only be used by Windows to
implement WebView::ProcessMonitor.

Co-authored-by: Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
This commit is contained in:
ayeteadoe
2025-11-22 15:02:26 -08:00
committed by Alexander Kalenik
parent 433ff624b8
commit 4cb7743915
Notes: github-actions[bot] 2026-04-12 14:09:25 +00:00 
Author: https://github.com/ayeteadoe
Commit: https://github.com/LadybirdBrowser/ladybird/commit/4cb7743915b
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6909
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/R-Goc
5 changed files with 95 additions and 0 deletions
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4
Libraries/LibCore/EventLoop.h
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@@ -88,6 +88,10 @@ public:
static int register_signal(int signo, ESCAPING Function<void(int)> handler);
static void unregister_signal(int handler_id);
// Invokes the specified handler when the process exits
static void register_process(pid_t pid, ESCAPING Function<void(pid_t)> exit_handler);
static void unregister_process(pid_t pid);
static bool is_running();
static EventLoop& current();
static NonnullRefPtr<WeakEventLoopReference> current_weak();