Patent · US Active

Robust transactional memory

US10445238B1 · kind B1 · utility

10Cited by

5References

20Claims

0Family size

Assignee

Arm Limited · GB

Inventors

Stephan Diestelhorst · Dresden, DE
Wei Wang · Cambridge, GB

Key dates

Filing date	Apr 24, 2018
Grant date	Oct 15, 2019
Priority date	—
Expiry date	Apr 24, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG06F2212/608
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Methods and apparatus are provided for executing a transaction in a data processing system, responsive to each memory access of the transaction, a transaction log is updated in a persistent memory. After execution of the transaction and when the transaction log is complete, the transaction log is marked as ‘pending’. When all values modified in the transaction have been written back to the persistent memory, the transaction log is marked as ‘free’. When, following a reboot, a transaction log is marked as ‘pending’, data stored in the transaction log is copied to the persistent memory at addresses indicated in the transaction log. After the copying is complete, the transaction log is marked as ‘free’. Cache values modified in the transaction may be written back to persistent memory when evicted, and values read in the transaction may be read from the cache rather than from the transaction log.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.