3 files changed, 9 insertions, 6 deletions
diff --git a/backend/headless/backend.c b/backend/headless/backend.c
index 0bf5ec28..7832b00c 100644
--- a/backend/headless/backend.c
+++ b/backend/headless/backend.c
@@ -2,6 +2,7 @@
 #include <wlr/render/egl.h>
 #include <wlr/render/gles2.h>
 #include <wlr/util/log.h>
+#include <wlr/util/signal.h>
 #include <wlr/interfaces/wlr_output.h>
 #include <wlr/interfaces/wlr_input_device.h>
 #include "backend/headless.h"
@@ -16,14 +17,14 @@ static bool backend_start(struct wlr_backend *wlr_backend) {
 	wl_list_for_each(output, &backend->outputs, link) {
 		wl_event_source_timer_update(output->frame_timer, output->frame_delay);
 		wlr_output_update_enabled(&output->wlr_output, true);
-		wl_signal_emit(&backend->backend.events.output_add,
+		wlr_signal_emit_safe(&backend->backend.events.output_add,
 			&output->wlr_output);
 	}
 
 	struct wlr_headless_input_device *input_device;
 	wl_list_for_each(input_device, &backend->input_devices,
 			wlr_input_device.link) {
-		wl_signal_emit(&backend->backend.events.input_add,
+		wlr_signal_emit_safe(&backend->backend.events.input_add,
 			&input_device->wlr_input_device);
 	}
 
@@ -51,7 +52,7 @@ static void backend_destroy(struct wlr_backend *wlr_backend) {
 		wlr_input_device_destroy(&input_device->wlr_input_device);
 	}
 
-	wl_signal_emit(&wlr_backend->events.destroy, backend);
+	wlr_signal_emit_safe(&wlr_backend->events.destroy, backend);
 
 	wlr_egl_finish(&backend->egl);
 	free(backend);
diff --git a/backend/headless/input_device.c b/backend/headless/input_device.c
index 5c62e87f..68e7ce24 100644
--- a/backend/headless/input_device.c
+++ b/backend/headless/input_device.c
@@ -6,12 +6,13 @@
 #include <wlr/interfaces/wlr_tablet_tool.h>
 #include <wlr/interfaces/wlr_tablet_pad.h>
 #include <wlr/util/log.h>
+#include <wlr/util/signal.h>
 #include "backend/headless.h"
 
 static void input_device_destroy(struct wlr_input_device *wlr_dev) {
 	struct wlr_headless_input_device *device =
 		(struct wlr_headless_input_device *)wlr_dev;
-	wl_signal_emit(&device->backend->backend.events.input_remove, wlr_dev);
+	wlr_signal_emit_safe(&device->backend->backend.events.input_remove, wlr_dev);
 	free(device);
 }
 
@@ -88,7 +89,7 @@ struct wlr_input_device *wlr_headless_add_input_device(
 	wl_list_insert(&backend->input_devices, &wlr_device->link);
 
 	if (backend->started) {
-		wl_signal_emit(&backend->backend.events.input_add, wlr_device);
+		wlr_signal_emit_safe(&backend->backend.events.input_add, wlr_device);
 	}
 
 	return wlr_device;
diff --git a/backend/headless/output.c b/backend/headless/output.c
index 507595a5..eab983cc 100644
--- a/backend/headless/output.c
+++ b/backend/headless/output.c
@@ -4,6 +4,7 @@
 #include <GLES2/gl2.h>
 #include <wlr/interfaces/wlr_output.h>
 #include <wlr/util/log.h>
+#include <wlr/util/signal.h>
 #include "backend/headless.h"
 
 static EGLSurface egl_create_surface(struct wlr_egl *egl, unsigned int width,
@@ -136,7 +137,7 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
 	if (backend->started) {
 		wl_event_source_timer_update(output->frame_timer, output->frame_delay);
 		wlr_output_update_enabled(wlr_output, true);
-		wl_signal_emit(&backend->backend.events.output_add, wlr_output);
+		wlr_signal_emit_safe(&backend->backend.events.output_add, wlr_output);
 	}
 
 	return wlr_output;