| 摘要 |
PROBLEM TO BE SOLVED: To enable an arbitration circuit to arbitrate access to shared resources from a multi-core processor with an optimum access ratio.SOLUTION: A CPU #0 detects task switching from an application B to an application D in a CPU #1, and acquires application priorities and application access counts allocated to the respective CPUs from an application information group 121. The CPU #0 determines an access ratio of an application A having a highest priority among the allocated applications to the application D and an access ratio of the application A to an application C on the basis of the priorities and the access counts of the respective applications. The priority of the application A is 90 and the access count thereof is 90. The priority of the application D is 30 and the access count thereof is 90. The CPU #0 determines a ratio of the priority of the application A to that of the application D as the access ratio since comparison of the access count of the application A with that of the application D indicates that the application D is equal to the application A in the access count. |
