Hardware-assisted interthread push communication

摘要

In a data processing system, a switch of the data processing system receives a request to push a message referenced by an instruction of a sending thread to a receiving thread. In response to receiving the request, the switch determines whether the sending thread is authorized to push the message to the receiving thread by attempting to access an entry of a data structure of the switch utilizing a key derived from at least one identifier of the sending thread. In response to access to the entry being successful, content of the entry is utilized to determine an address of a mailbox of the receiving thread, and the switch pushes the message to the mailbox of the receiving thread. In response to access to the entry not being successful, the switch refrains from pushing the message to the mailbox of the receiving thread.

主权项

1. A method of data processing in a data processing system, the method comprising:
receiving, at a switch of the data processing system, a request to push a message referenced by an instruction of a sending thread to a receiving thread; in response to receiving the request, the switch determining whether the sending thread is authorized to push the message to the receiving thread, wherein the determining includes attempting to access an entry of a data structure of the switch utilizing a key derived from at least one identifier of the sending thread; in response to access to the entry being successful, utilizing content of the entry to determine an address of a mailbox of the receiving thread and pushing the message to the mailbox of the receiving thread; and in response to access to the entry not being successful, refraining from pushing the message to the mailbox of the receiving thread.