From 4e804ef40f46136d4fe84603a8236adc172260f8 Mon Sep 17 00:00:00 2001
From: Tony Crisci <tony@dubstepdish.com>
Date: Tue, 19 Dec 2017 18:14:47 -0500
Subject: [PATCH] add backend destroy event

---
 backend/backend.c     | 2 ++
 include/wlr/backend.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/backend/backend.c b/backend/backend.c
index f93dde38..58181947 100644
--- a/backend/backend.c
+++ b/backend/backend.c
@@ -18,6 +18,7 @@ void wlr_backend_init(struct wlr_backend *backend,
 		const struct wlr_backend_impl *impl) {
 	assert(backend);
 	backend->impl = impl;
+	wl_signal_init(&backend->events.destroy);
 	wl_signal_init(&backend->events.input_add);
 	wl_signal_init(&backend->events.input_remove);
 	wl_signal_init(&backend->events.output_add);
@@ -32,6 +33,7 @@ bool wlr_backend_start(struct wlr_backend *backend) {
 }
 
 void wlr_backend_destroy(struct wlr_backend *backend) {
+	wl_signal_emit(&backend->events.destroy, backend);
 	if (backend->impl && backend->impl->destroy) {
 		backend->impl->destroy(backend);
 	} else {
diff --git a/include/wlr/backend.h b/include/wlr/backend.h
index 2c8fd982..4632dcbf 100644
--- a/include/wlr/backend.h
+++ b/include/wlr/backend.h
@@ -11,6 +11,7 @@ struct wlr_backend {
 	const struct wlr_backend_impl *impl;
 
 	struct {
+		struct wl_signal destroy;
 		struct wl_signal input_add;
 		struct wl_signal input_remove;
 		struct wl_signal output_add;