The priority controller of input-output request, the input-output request which priority control manner of input-output request, and task

摘要

PROBLEM TO BE SOLVED: To achieve priority control for preventing the delay of the response of a real time OS, and for suppressing the deterioration of a through-put of a general-purpose OS in a hybrid OS.;SOLUTION: The priority controller of an input/output request includes a priority management table; a priority control part; and input/output request queue. The priority management table is configured to determine the size of an input/output block which is permitted for a second input/output request to be issued to a general-purpose operating system in response to the priority of a first input/output request to be issued to a real time operating system. The priority control part is configured to receive the first input/output request and the second input/output request, and to divide the second input/output request based on the priority management table, and the input/output queue is configured to enqueue the first input/output request and the second input/output request divided by the priority control part in the order of priority.;COPYRIGHT: (C)2009,JPO&INPIT