Patent ID: 6662204
Filing Date: 2003-12-09
Classification: G06F

Abstract:
A thread control system in an operating system of a computer system having one or more CPUs, comprising:an interruption signal generating means for generating interruption signals by a timer that counts a specified time; an interruption executing means for checking an executing thread by one of the CPUs upon receipt of said interruption signals from said interruption generating means; an executing thread memory means for storing the thread checked by the interruption executing means; a counter means for judging whether the thread stored in said executing thread memory means which was checked last time and the executing thread are identical or not and for incrementing a value of said counter means if they are identical, and a priority modifying means for judging that said thread is abnormally operating if said value of said counter means is in excess of a predetermined value and for modifying its priority to a lower priority that does not affect said operating system.