void run_toplevel_callbacks(void)
{
- while (cbhead) {
+ if (cbhead) {
struct callback *cb = cbhead;
/*
* Careful ordering here. We call the function _before_
* advancing cbhead (though, of course, we must free cb
* _after_ advancing it). This means that if the very last
* callback schedules another callback, cbhead does not become
- * NULL at any point in this while loop, and so the frontend
- * notification function won't be needlessly pestered.
+ * NULL at any point, and so the frontend notification
+ * function won't be needlessly pestered.
*/
cb->fn(cb->ctx);
cbhead = cb->next;
sfree(cb);
+ if (!cbhead)
+ cbtail = NULL;
}
- cbtail = NULL;
+}
+
+int toplevel_callback_pending(void)
+{
+ return cbhead != NULL;
}