Method for preventing processes between processors from conflicting in a multiprocessor based computer

摘要

An integral semaphore is set as lock label which is in turn placed in a code segment of process control block of respective processor in a multiprocessor based computer, thus identifying whether system resources is occupied by a processor. The lock label is placed if system resources is not occupied by the processor. Then the processor is commanded to perform an interrupt service routine thereof. The lock label is released after the interrupt service routine has been finished, thereby enabling other processors to utilize the system resources. The processor may normally perform its interrupt process procedure when an interrupt signal is received sequentially. Thus, it is possible to prevent processes between processors from conflicting in measuring the number of processors.