Controller and program product

摘要

According to one embodiment, a controller includes a state detecting unit, a calculating unit, and a determining unit. The state detecting unit detects an idle state in which indicates there are no process that can execute on a processing device capable of performing one or more processes. The calculating unit calculates a resuming time, which indicates a time length until the next process starts, when the state detecting unit detects the idle state. The determining unit determines an operation mode of the processing device on the basis of the resuming time calculated by the calculating unit.

主权项

1. A controller comprising:
a state detecting unit that detects an idle state which indicates there is no process that is executed by a processing device capable of performing one or more processes; a fourth storage unit that stores therein an interrupt type indicating a type of an interrupt process and a time at which interrupt waiting corresponding to the interrupt type occurs; a fifth storage unit that stores therein the interrupt type and an interrupt waiting time corresponding to the interrupt type; a calculating unit that calculates, when the state detecting unit detects the idle state, a resuming time, which indicates a time length from a current time until a next interrupt process starts, on the basis of information stored in the fourth storage unit and information stored in the fifth storage unit; and a determining unit that determines an operation mode of the processing device on the basis of the resuming time calculated by the calculating unit.