PURPOSE:To perform efficient communication between processors by connecting a queue of processing requests, which the processor of the processing request source connects to a communication buffer, to a queue of another processor again at the time of accurring abnormality of the processor of the processing request destination. CONSTITUTION:A queue pointer of processing requests registered with each of request destination processors 101 to 104 as the unit and plural communica tion buffers where processing request messages are stored are provided in a shared memory 1, and a system controller 100 enqueues the processing request from the processing request source processor into the processing request queue of the processing request destination processor and informs the processing request source processor of processing connection completion and outputs the processing request message to the processing request destination processor. When the processing end message comes form the processing request destination processor, the processing request is deleted from the queue; and if a faulty processor is detected, processing requests connected to this processor are enqueued to the processing request queue of another normal processor. Thus, efficient communication between processors is made possible.

Way of testing electrical parts and electrical circuit elements

Citations

Inter-processor communication system