CACHE CONTROL DEVICE AND PIPELINE CONTROL METHOD

摘要

The cache control device (14) disclosed in the present application has an input unit (210), a first search unit (220), a reading unit (240), a second search unit (230), and a rewriting unit (250). The input unit (210) inputs, to a pipeline, load requests for reading from a directory and store requests for writing a directory, these requests being received from a processor. When it is determined by the first search unit (220) that a directory for which there is a load request exists in a first cache memory or a second cache memory, the reading unit (240) reads the directory from the cache memory. When it is determined by the second search unit (230) that a directory for which there is a store request exists in the first cache memory, the rewriting unit (250) rewrites the directory in the first cache memory.