CACHE CONTROLLER, PROCESSOR, INFORMATION PROCESSING SYSTEM, AND CONTROL METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To efficiently maintain the consistency of data of a cache memory in a dynamic thread scheduling environment.SOLUTION: A tag storage part manages whether a cache line is effective in each cache line of a cache memory and whether a write-back instruction is made to a shared storage part. A tag control part nullifies a cache line that is not subjected to a write-back instruction without nullifying a cache line that has been subjected to the write-back instruction when a prescribed instruction is made.