VIRTUAL COMPUTER CONTROL DEVICE, VIRTUAL COMPUTER CONTROL PROGRAM, AND VIRTUAL COMPUTER CONTROL CIRCUIT

摘要

An interrupt level storage unit (16) stores at least one interrupt level indicating priority of the interrupt which has been generated and stores the interrupt level having the highest priority among the stored interrupt levels as a second interrupt mask level.  A second interrupt type determination unit (13) sets an interrupt level corresponding to the interrupt type of a new interrupt which has been generated.  If the interrupt level of the newly generated interrupt is higher than the stored second interrupt mask level, a priority determination unit (14) reports an interrupt to a virtual computer control unit (20).  Thus, even if the virtual computer cannot report a task priority, it is possible to determine the priority of the virtual computer in accordance with the task priority and appropriately control switching of the virtual computers from one to another.