| 摘要 |
PROBLEM TO BE SOLVED: To provide an information accumulation control method preventing overflow of a queue. SOLUTION: This information accumulation control method for a storage device is provided with a step for setting a first area for accumulating process request information, a step for setting a second area for accumulating process completion information as information showing completion of the process request, a for step setting an initial value of a semaphore variable corresponding to the first area as a maximum number of accumulable information, a step for adding the process request information to the first area if a value obtained by subtracting one from the semaphore variable is a positive number and updating the value found this subtraction as the semaphore variable, a step for accumulating the information specifying the process request and the process completion information in the second area while homologizing them with each other when the process request is completed, and a step for updating the value found by adding one to the semaphore variable as that corresponding to the first area and deleting one pieces of process information if the process completion information is accumulated in the second area. In this way, when the process requests are executed while arranging two kinds of queues as interfaces, data about the process request can be accumulated in the queue without any overflow in each queue. Consequently, stop or delay of processing due to overflow of the queue can be prevented. COPYRIGHT: (C)2004,JPO&NCIPI
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