Digital data processor with improved paging

Details Digital data processor with improved paging Digital data processor with improved paging

G - Physics

06

F

G06F 12/02 (2006.01) G06F 12/10 (2006.01) G06F 15/16 (2006.01)

Patent

CA 2078312

-81- Abstract A digital data processing apparatus has a memory element that stores data for access by one or more processes, as well as a secondary storage element, e.g., a disk drive, for non-volatile data storage. A paging mechanism selectively transfers sets of data between the memory and an associated data file on the disk. A directory stores "atomic" signals, or bits, each reflecting a state of one or more data in the set. The paging mechanism includes a page-out element that stores data from a subset of the set to the associated data file. During paging, that element responds to data in the subset which are associated with the atomic state -- as reflected by the atomic bit -- for storing to an associated status file on the disk attributes of the paged data. Those signals can be, for example, the atomic bits themselves.

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