Multithreaded transactions

A computer implemented method for a multithreaded transaction, the method comprising:

• assigning a same transaction identifier (ID) corresponding to the multithreaded transaction to each of a plurality of threads of the multithreaded transaction, wherein the plurality of threads execute the multithreaded transaction in parallel;
• determining one or more memory areas that are owned by the multithreaded transaction;
• receiving a memory access request from a requester that is directed to a memory area that is owned by the transaction;
• and
• based on determining that the requester has a transaction ID that matches the transaction ID of the multithreaded transaction, performing the memory access request without aborting the multithreaded transaction;
• and
• based on determining that the requester does not have a transaction ID that matches the transaction ID of the multithreaded transaction, aborting the multithreaded transaction, wherein the multithreaded transaction includes a number of threads that is specified by an transaction invocation instruction.