Terminate children when freeing output container

include/config.h

@@ -185,6 +185,8 @@ int sway_mouse_binding_cmp_buttons(const void *a, const void *b);
 void free_sway_mouse_binding(struct sway_mouse_binding *smb);
 
 void load_swaybars(swayc_t *output, int output_idx);
+void terminate_swaybars(list_t *pids);
+void terminate_swaybg(pid_t pid);
 
 /**
  * Allocate and initialize default bar configuration.

sway/config.c

@@ -389,7 +389,7 @@ static void invoke_swaybar(swayc_t *output, struct bar_config *bar, int output_i
 	list_add(output->bar_pids, pid);
 }
 
-static void terminate_swaybars(list_t *pids) {
+void terminate_swaybars(list_t *pids) {
 	int i, ret;
 	pid_t *pid;
 	for (i = 0; i < pids->length; ++i) {
@@ -411,6 +411,16 @@ static void terminate_swaybars(list_t *pids) {
 	}
 }
 
+void terminate_swaybg(pid_t pid) {
+	int ret = kill(pid, SIGTERM);
+	if (ret != 0) {
+		sway_log(L_ERROR, "Unable to terminate swaybg [pid: %d]", pid);
+	} else {
+		int status;
+		waitpid(pid, &status, 0);
+	}
+}
+
 void load_swaybars(swayc_t *output, int output_idx) {
 	// Check for bars
 	list_t *bars = create_list();
@@ -496,13 +506,7 @@ void apply_output_config(struct output_config *oc, swayc_t *output) {
 	if (oc && oc->background) {
 
 		if (output->bg_pid != 0) {
-			int ret = kill(output->bg_pid, SIGTERM);
+			terminate_swaybg(output->bg_pid);
-			if (ret != 0) {
-				sway_log(L_ERROR, "Unable to terminate swaybg [pid: %d]", output->bg_pid);
-			} else {
-				int status;
-				waitpid(output->bg_pid, &status, 0);
-			}
 		}
 
 		sway_log(L_DEBUG, "Setting background for output %d to %s", output_i, oc->background);

sway/container.c

@@ -61,8 +61,12 @@ static void free_swayc(swayc_t *cont) {
 		free(cont->app_id);
 	}
 	if (cont->bar_pids) {
+		terminate_swaybars(cont->bar_pids);
 		free_flat_list(cont->bar_pids);
 	}
+	if (cont->bg_pid != 0) {
+		terminate_swaybg(cont->bg_pid);
+	}
 	free(cont);
 }