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    • 9. 发明授权
    • Restoring checkpointed processes without restoring attributes of external data referenced by the processes
    • 恢复检查点进程,而不恢复进程引用的外部数据的属性
    • US06256751B1
    • 2001-07-03
    • US09182725
    • 1998-10-29
    • Kalman Zvi MethAdnan M. AgbariaJose MoreiraVijay Naik
    • Kalman Zvi MethAdnan M. AgbariaJose MoreiraVijay Naik
    • G06F1114
    • G06F11/1438G06F11/1471Y10S707/99953
    • A checkpoint of a process is taken in order to provide a consistent state of the process in the event the process is to be restarted. When the process is restarted, the process is placed in the state it was in when the checkpoint was taken. However, there are times when certain information has changed since the last checkpoint and it should not be restored. For example, if a process is restarted on a computing unit different from the one in which the checkpoint is taken, then various attributes associated with external data referenced by the process (e.g., an address to an external function/variable) might be different than at the time of the checkpoint. Similarly, even on the same computing unit, if the functions and/or variables are reloaded, the attributes may be different. Since these new attribute values are needed for the restarted process, they should not be restored. In order to prevent restoration of the attributes, only part of the Data Section is restored. The portion of the Data Section including the attributes remains intact.
    • 采取进程的检查点,以便在重新启动进程的情况下提供进程的一致状态。 当进程重新启动时,进程将处于采集检查点时的状态。 但是,有些时候,自上一个检查点以来,某些信息已经发生变化,不能恢复。 例如,如果在与执行检查点的计算单元不同的计算单元上重新启动进程,则与进程引用的外部数据(例如,与外部函数/变量的地址)相关联的各种属性可能不同于 在检查点时。 类似地,即使在相同的计算单元上,如果功能和/或变量被重新加载,则属性可能不同。 由于重新启动的进程需要这些新的属性值,因此不能恢复。 为了防止恢复属性,只有部分数据部分被恢复。 数据部分包括属性的部分保持不变。