COMPUTER EXECUTING PLURAL OPERATING SYSTEMS

摘要

PROBLEM TO BE SOLVED: To switch operating systems to be operated by considering the significance of tasks to be executed on respective operating systems. SOLUTION: Plural operating systems performing execution according to priorities allocated to plural processes or threads respectively have the processing of priority notification 120 and 121 notifying the priority of a process or thread in the middle of execution. Then, the processing of priority conversion 122 converting priorities notified from the respective operating systems into a common priority (normalization priority) in a computer and the processing of priority comparison 124 which compares normalization priorities obtained by the processing of the conversion 122 and preferentially executes an operating system having a higher normalization priority are executed.