    001package com.hammurapi.common.concurrent;
    002
    003/**
    004 * Callback interface for tasks created by synapses.
    005 * Flow implementations provide implementation of this interface
    006 * for synchronization purposes, e.g. to wait for completion of all
    007 * flow tasks.
    008 * @author Pavel Vlasov
    009 */
    010public interface TaskCounter {
    011
    012        /**
    013         * Invoked when a new task has been created and about to
    014         * be sent to execution.
    015         * @param task
    016         */
    017        void onTaskCreated(Runnable task);
    018
    019        /**
    020         * Invoked when a task finished execution.
    021         * @param task
    022         */
    023        void onTaskFinished(Runnable task);
    024}