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    • 1. 发明授权
    • Method and system for multicast statistic collection
    • 组播统计收集方法与系统
    • US08626899B2
    • 2014-01-07
    • US12682393
    • 2007-10-23
    • Solomon Wu
    • Solomon Wu
    • G06F15/173
    • H04L43/00H04L12/185H04L41/12
    • A system (100) and method (200) related to gathering statistical information regarding a data stream. The method (200) may include sending (205), by a data forwarding device (110), an internet protocol (IP) multicast data stream to a multicast group using an internet protocol (IP); and collecting (210) statistical data from a router (120a-g) down stream of the forwarding device (110) to determine a number of end point recipients (125, 130, 135) associated with the multicast group and receiving the multicast data stream.
    • 一种与收集关于数据流的统计信息有关的系统(100)和方法(200)。 方法(200)可以包括使用因特网协议(IP)向数据转发设备(110)发送(205)互联网协议(IP)多播数据流到多播组; 以及从所述转发设备(110)下游的路由器(120a-g)收集(210)统计数据,以确定与所述多播组相关联的多个终点接收者(125,130,135)并接收所述多播数据流 。
    • 3. 发明授权
    • Method for detecting infinite loops by setting a flag indicating
execution of an idle task having lower priority than executing
application tasks
    • 通过设置指示执行比执行应用任务更低优先级的空闲任务的标志来检测无限循环的方法
    • US5278976A
    • 1994-01-11
    • US510324
    • 1990-04-16
    • Solomon Wu
    • Solomon Wu
    • G06F11/00
    • G06F11/0757G06F11/0715
    • Method and apparatus for detecting infinite tight loops and infinite inter-task loops in applications tasks in multi-task, real-time systems. In accordance with the inventive method, a low priority task, the idle task, is executed whenever no other task is ready to execute. Further, when the idle task executes it sets a flag. A higher priority, watch dog task executes and tests the flag. If the flag has been set, the watch dog task resets the flag and sends a signal to reset a watch dog timer, however, if the flag has not been set by the idle task for a predetermined time period, the watch dog task will stop resetting the watch dog timer. As a result, this will cause the watch dog timer to trigger and reset the system.
    • 用于在多任务,实时系统中检测应用任务中无限紧循环和无限任务循环的方法和装置。 根据本发明的方法,每当没有其他任务准备好执行时,执行低优先级任务空闲任务。 此外,当空闲任务执行时,它设置一个标志。 更高优先级,看门狗任务执行并测试该标志。 如果标志已设置,看门狗任务复位该标志并发送一个信号来复位看门狗定时器,但是如果该标志尚未被空闲任务设定一段预定的时间段,则看门狗任务将停止 重置看门狗定时器。 因此,这将导致看门狗定时器触发并重置系统。