TRANSACTIONAL MEMORY OPERATIONS WITH READ-ONLY ATOMICITY

摘要

Execution of a transaction mode setting instruction causes a computer processor to be in an atomic read-only mode ignoring conflicts to certain write-sets of a transaction during transactional execution. Read-set conflicts may still cause a transactional abort. Absent any aborting, the transaction's execution may complete, by committing transactional stores to memory and updating architecture states.

主权项

1. A computer implemented method for performing transactional memory operations in a multi-processor transactional execution (TX) environment, the method comprising:
executing an instruction to cause a transaction to be executed, by a processor, in an atomic read-only transaction mode, execution in the atomic read-only transaction mode comprising: tracking memory read accesses as a read-set of the transaction; based on detecting a read-set conflict, aborting the transaction; suppressing any transaction abort due to conflicts of a write-set generated while in the atomic read-only transaction mode; and absent any aborting, completing the transaction, the completing comprising committing stores executed in the transaction to memory and updating architecture states.