| 25 | | * When a processor P executes the SC(X,D) instruction to an address X, this conditional write is sent to the L2 cache by the L1 cache, and the command contains both the reservation key K and the data D to be written. The L2 cache makes an associative search in the ''reservation table''. If a reservation with the same address X and the same key K is found, the atomic operation is a success : The reservation is canceled in the ''reservation table'', the D value is written at address X, and a ''success'' value is returned to the L1 cache. If there is no match in the ''associative table'', the atomic operation is a failure: the D value is not written at address X, the ''reservation table is not modified, and a ''failure'' value is returned to the L1 cache. |
| | 25 | * When a processor P executes the SC(X,D) instruction to an address X, this conditional write is sent to the L2 cache by the L1 cache, and the command contains both the reservation key K and the data D to be written. The L2 cache makes an associative search in the ''reservation table''. If a reservation with the same address X and the same key K is found, the atomic operation is a success : The reservation is canceled in the ''reservation table'', the D value is written at address X, and a ''success'' value is returned to the L1 cache. If there is no match in the ''reservation table'', the atomic operation is a failure: the D value is not written at address X, the ''reservation table'' is not modified, and a ''failure'' value is returned to the L1 cache. |
