| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect whether or not abnormality is generated in monitoring itself when the execution time of a plurality of processing targets is monitored by one timer means. <P>SOLUTION: When acquiring a new resource during the monitoring of acquisition time of an already acquired resource, differential time between a counter value of a timer circuit 18 and the upper limit restriction time of the acquisition time of the new resource is calculated and stored in a RAM 16. When the resource is released, additional time for determining a code of the differential time is added to the count value to calculate a count value to be newly counted by the timer circuit 18. The timer circuit 18 counts the differential time and the additional time, and determines whether or not the total time of the counted differential time coincides with the total time of the counted additional time and whether or not the counting frequency of the differential time coincides with the counting frequency of the additional time. <P>COPYRIGHT: (C)2012,JPO&INPIT |
