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    • 5. 发明授权
    • Method and apparatus for switching messages from a primary message channel to a secondary message channel in a message queuing system
    • 用于将消息从主消息信道切换到消息队列系统中的辅助消息信道的方法和装置
    • US06625117B1
    • 2003-09-23
    • US09409139
    • 1999-09-30
    • Shawfu ChenRobert O. DryfoosAllan FeldmanDavid Y. HuPeter A. LewisMasashi E. MiyakeWei-Yi Xiao
    • Shawfu ChenRobert O. DryfoosAllan FeldmanDavid Y. HuPeter A. LewisMasashi E. MiyakeWei-Yi Xiao
    • G01R3108
    • H04L1/22
    • A method and apparatus for switching messages from a primary message channel to a secondary message channel in a message queuing system in which messages are placed in a first transmission queue of a local system for transmission to a remote system via a primary message channel. A local queue manager continuously checks to see whether a high water mark has been reached in the first transmission queue, indicating an apparent failure in the primary message channel. On determining such an apparent failure in the primary message channel, the queue manager determines whether the secondary message channel is associated with the first transmission queue. If so, the queue manager activates the secondary message channel to serve said first transmission queue. If, on the other hand, the secondary message channel is associated with another transmission queue, the queue manager transfers messages already in the first queue to the other queue and redirects any new messages intended for the first queue to the other queue. If the other transmission queue was previously empty, the secondary message channel is activated by a trigger to serve the other queue.
    • 一种用于将消息从主消息信道切换到消息队列系统中的辅助消息信道的方法和装置,其中消息被放置在本地系统的第一传输队列中,以经由主消息信道传输到远程系统。 本地队列管理器持续检查在第一个传输队列中是否达到高水位标记,表明主消息通道明显失败。 在确定主消息信道中的这种明显故障时,队列管理器确定辅助消息信道是否与第一传输队列相关联。 如果是,则队列管理器激活辅助消息信道以服务于所述第一传输队列。 另一方面,如果辅助消息信道与另一传输队列相关联,则队列管理器将已经在第一队列中的消息传送到另一个队列,并且将用于第一队列的任何新消息重定向到另一队列。 如果另一个传输队列以前是空的,则辅助消息通道由触发器激活以提供其他队列。
    • 9. 发明授权
    • Shared, distributed lock manager for loosely coupled processing systems
    • 用于松散耦合处理系统的共享分布式锁管理器
    • US5423044A
    • 1995-06-06
    • US899664
    • 1992-06-16
    • Peter G. SuttonIan J. KupferGlenn W. Sears, Jr.Theodore GoetzRobert O. Dryfoos
    • Peter G. SuttonIan J. KupferGlenn W. Sears, Jr.Theodore GoetzRobert O. Dryfoos
    • G06F12/00G06F9/46G06F13/36G11C29/00G06F13/16G06F12/16G06F13/364
    • G06F9/52G06F13/36G11C29/88G06F2201/825
    • Apparatus and process for managing shared, distributed locks in a multiprocessing complex. The manager operates using a partitionable lock space with logical processor connection. Logically connected processors are subject to validation and disconnection due to failure. The locks synchronize data access to identifiable subunits of DASD. Denied lock requests are queued for servicing when the lock becomes available. Lock partitions are used to speed DASD to DASD copying without halting processing on the first DASD. A special partition is assigned to the copy task and the processors writing to the DASD can determine copy status with a single read or test. Operations requiring multilateral agreement of processors, such as rebuilding locks or moving locks, are protected by fencing any nonresponsive processor. A special queue partition is designated for master/slave control point designation. All processors contend for the master lock and losing contenders are queue. Queuing provides automatic fallback in case of a failing processor.
    • 用于在多处理复合体中管理共享的分布式锁的装置和过程。 管理员使用具有逻辑处理器连接的可分区锁定空间。 由于故障,逻辑连接的处理器将进行验证和断开连接。 锁将数据访问同步到DASD的可识别子单元。 当锁可用时,被拒绝的锁请求排队等待进行维修。 锁定分区用于将DASD加速至DASD复制,而不停止第一个DASD处理。 分配给复制任务的特殊分区,写入DASD的处理器可以通过单次读取或测试来确定复制状态。 需要处理器多边协议的操作,例如重建锁或移动锁,都可以通过防护任何无响应的处理器进行保护。 指定主/从控制点指定的特殊队列分区。 所有处理器都会争取主锁,而失败的竞争者则是队列。 排队在出现故障的处理器的情况下提供自动回退。