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    • 3. 发明授权
    • Processing method by which continuous operation of communication control
program is obtained
    • 获得通信控制程序的连续操作的处理方法
    • US5600808A
    • 1997-02-04
    • US257575
    • 1994-06-09
    • Masayuki Kasukawa
    • Masayuki Kasukawa
    • G06F9/46G06F11/00G06F11/14G06F13/00G06F11/16
    • G06F11/1482G06F11/1438G06F11/2043G06F11/2097
    • A computer system comprising an application program, a communication control program operating a communication access method having an active process and standby process, an operational environment information storing portion in a common memory to which the active process and the standby process have access, and processor(s). A process for executing the communication control program is multiplexed by the active process and the standby process, the active process forms an operational environment of a logical connection between an application program and a user terminal, and the operational environment is set in the common memory. When the active process malfunctions and an event wherein the standby process cannot continue the communication occurs, in each logical connection, an under data processing flag is stored in the common memory, and the flag is cleared when the process of the event is completed. The standby process accesses the operational environment storing portion in the common memory, and the operational environment information in each logical connection is taken from the active process. Here, the common memory is examined to determine whether the flag is stored or not, and if the flag is stored, the logical connection is disconnected and the warning of the abnormality is sent. In the communication of the logical connection wherein the flag is not set, the communication control program operates continuously, and thus a continuous operation in the computer system is obtained at a low cost.
    • 一种计算机系统,包括应用程序,操作具有活动进程和待机进程的通信访问方法的通信控制程序,所述活动进程和所述备用进程可访问的公共存储器中的操作环境信息存储部分,以及处理器 s)。 用于执行通信控制程序的过程通过主动处理和备用处理被复用,活动进程形成应用程序和用户终端之间的逻辑连接的操作环境,并且操作环境被设置在公共存储器中。 当活动进程发生故障时,其中待机进程无法继续进行通信的事件发生在每个逻辑连接中,在数据处理标志下存储在公共存储器中,并且当事件的处理完成时,该标志被清除。 备用处理访问公用存储器中的操作环境存储部分,并且从活动进程获取每个逻辑连接中的操作环境信息。 这里,检查公共存储器以确定标志是否被存储,并且如果标志被存储,则逻辑连接断开并且发送异常的警告。 在没有设置标志的逻辑连接的通信中,通信控制程序持续运行,从而以低成本获得计算机系统中的连续操作。