Multi-processor system and program for causing computer to execute controlling method of interruption of multi-processor system

A program for causing a computer to execute a controlling method of an interruption of the multi-processor system to be applied to the multi-processor system with a plurality of unit processors, comprising:

• a semaphore request determining step of determining whether, when a first unit processor among said unit processors requests to obtain a semaphore that is set to be able to be identified, the request is for requesting a semaphore being obtained by the second unit processor;
• an exclusive controlling step of waking the request from the first unit processor wait when it is determined that said request is for requesting a semaphore being requested, and permitting to obtain a requested semaphore when it is determined that said request is for requesting a semaphore other than the semaphore being obtained at said semaphore request determining step;
• and
• an interruption prohibition step of setting interruption prohibition to the unit processor for which a semaphore is permitted to be obtained at said exclusive controlling step.