Multi-core processor system, multi-core processor system control method, and multi-core processor system control program

摘要

PROBLEM TO BE SOLVED: To reduce a load, and to improve the utilization efficiency of a processor.SOLUTION: When an exclusion start event is detected in an application A, a thread B is notified of an interruption signal (exclusion start). When the notification of the exclusion start event is received, the thread B is saved, and a slave CPU 102 is released. Since there is a thread Y in a thread queue, the thread Y is assigned to the slave CPU 102. Thus, the thread Y is executed in the slave CPU 102. When the thread Y is ended, the thread queue is empty, and a current power mode is shifted to a low power mode. Afterwards, when an exclusion end event is detected in the application A, the slave CPU 102 is notified of an interruption signal (exclusion end) from the application A. When the notification of the exclusion end event is received by the slave CPU 102, the thread B is restored to the slave CPU 102.