| 摘要 |
<p>The invention provides an exclusive control method for a shared memory of a multiprocessor system in which a plurality of processor modules are connected with a plurality of shared-memory modules by system buses. The method is intended for improving the system performance by decreasing the range and time of the exclusive control to execute CSI (Compare and Store Interlocked) instructions for rewriting the data in the shared memory when the data read from the access address in the shared memory coincides with the data expected by the CPU. For the present invention, the range of the exclusive control is restricted to the processing in the internal buses of the shared memory-modules by making the unit connected with the system buses of the shared-memory modules recognize the CSI instruction to read and compare data in the shared-memory modules when the processor-module CPU rewrites data to execute the CSI instruction by specifying addresses of any shared-memory module.</p> |
