+static
+int pop_cmd_queue(struct notification_thread_handle *handle,
+ struct notification_thread_command **cmd)
+{
+ int ret;
+ uint64_t counter;
+
+ pthread_mutex_lock(&handle->cmd_queue.lock);
+ ret = lttng_read(handle->cmd_queue.event_fd, &counter, sizeof(counter));
+ if (ret != sizeof(counter)) {
+ ret = -1;
+ goto error_unlock;
+ }
+
+ *cmd = cds_list_first_entry(&handle->cmd_queue.list,
+ struct notification_thread_command, cmd_list_node);
+ cds_list_del(&((*cmd)->cmd_list_node));
+ ret = 0;
+
+error_unlock:
+ pthread_mutex_unlock(&handle->cmd_queue.lock);
+ return ret;
+}
+