Function plugin_hook_killed

lightningd/plugin_hook.c:117–143

We get notified if a plugin was killed while it was part of a call * chain. If it was still to be called we just remove it from the list, * otherwise it was the plugin that was currently handling the hook call, and * we need to fail over to the next plugin. */

 * we need to fail over to the next plugin.
*/
static void plugin_hook_killed(struct plugin_hook_call_link *link)
{
	struct plugin_hook_call_link *head;

	head = list_top(&link->req->call_chain, struct plugin_hook_call_link,
			list);

	/* If we are the head of the call chain, then the plugin died while it
	 * was handling the hook call. Pretend it didn't get the memo by
	 * calling the next one instead. This is correct since it is
	 * equivalent to the plugin dying before the hook invokation, assuming
	 * the plugin has not commmitted any changes internally. This is the
	 * weakest assumption we can make short of restarting the plugin and
	 * calling the hook again (potentially crashing the plugin the same
	 * way again.
	 */
	if (link == head) {
		/* Call next will unlink, so we don't need to. This is treated
		 * equivalent to the plugin returning a continue-result.
		 */
		plugin_hook_callback(NULL, NULL, NULL, link->req);
	} else {
		/* The plugin is in the list waiting to be called, just remove
		 * it from the list. */
		list_del(&link->list);
	}
}

bool plugin_hook_continue(void *unused, const char *buffer, const jsmntok_t *toks)
{