| 摘要 |
A synchronization request of each process (Pa,Pw) is indicated by a change of a semaphore. Synchronization occurs dependent on the indicator flags formed dependent on the changes of the semaphore. The process (Pa) carries out an information processing step. The other process (Pw) waits on the conclusion of the first process, indicated to the first process with a waiting flag. The conclusion of the information processing step is indicated dependent on the waiting flag and is informed to the other processes (Pw). The conclusion of the processing step is indicated to an operating system in the processing unit (E) while the other processes (Pw) is registered as waiting on the conclusion of the processing step. The operating system (BS) activates another process (Pw). During the processing (Pa) one of the processors (CPU1,2) of the unit is set to a non-privileged operating mode.
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