System and how to achieve both of the locking performance and locking fairness by spin-lock

摘要

To provide a locking mechanism which is SOLVED] improved. The method of [SOLUTION] each of which implements spin locks in a system including a plurality of processing nodes having a cache memory and at least one processor, the method comprising the steps of obtaining exclusivity on the cache memory, a step of checking the availability of the spin-lock, if the spin lock is available, a step of setting the logic one spin lock, the process is completed, a step of setting the logic zero spin locks, I and the step of explicitly relinquishing exclusive of cache memory. As will be marked as a non-exclusive cache memory, to surrender the exclusivity of cache memory, including that it instructs the cache coherent hardware. Typically, cache memory is referred to as level 2 cache. [Selection Figure Figure 4