| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an information processor, capable of performing, in a single processor system, processing with high priority first even when exclusive control is applied to processing in execution. Ž<P>SOLUTION: The information processor includes: a single processor 10 which executes information processing; a shared resource 20 which is a reference or writing object in the information processing; an interruption detection means 11 which detects interruption processing; and a priority monitoring means 12 which manages the priority of each processing to be executed by the processor. When the interruption detection means detects the occurrence of interruption processing while the processor is executing processing with exclusive control being applied to the shared resource by spin lock, the priority monitoring means mutually compares the priorities of the processing in execution and the interruption processing, and when the priority of the interruption processing is higher than that of the processing in execution, the processor interrupts the interruption processing, and restarts the interruption processing after the processing in execution releases the shared resource. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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