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Information processing system capable of executing a single instruction for watching and waiting for writing of information for synchronization by another processor
Information processing system capable of executing a single instruction for watching and waiting for writing of information for synchronization by another processor
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机译:信息处理系统,能够执行一条指令以观看和等待信息写入,以便由另一个处理器进行同步
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摘要
Each processor of a multiprocessor system which shares a main storage has a execution circuit for executing a compare and watch instruction provided for watching information for synchronization written into a main storage. When one program being executed by one of the processors issues an instruction, the circuit fetches information for synchronization from a location within the main storage designated by the instruction, compares that fetched information with another information designated by the instruction. If they do not have a specific relation, the fetching and the comparison is repeated. The circuit has a circuit for limiting the repetition with a limited number of times. The circuit further has a circuit for counting a total amount of CPU time spent for execution of plural watching instructions issued by the same program.
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