Mechanism for irrevocable transactions

Details Mechanism for irrevocable transactions Mechanism for irrevocable transactions

2006-12-28

2011-12-27

Fennema, Robert (Department: 2183)

Electrical computers and digital processing systems: processing

Processing control

Processing control for data transfer

Reexamination Certificate

active

08086827

ABSTRACT:
A method and apparatus for designating and handling irrevocable transaction is herein described. In response to detecting an irrevocable event, such as an I/O operation, a user-defined irrevocable designation, and a dynamic failure profile, a transaction is designated as irrevocable. In response to designating a transaction as irrevocable, Single Owner Read Locks (SORLs) are acquired for previous and subsequent reads in the irrevocably designated transaction to ensure the transaction is able to complete without modification to locations read from, while permitting remote resources to load from those locations to continue execution.

REFERENCES:
patent: 5428761 (1995-06-01), Herlihy et al.
Blundell et al. “Unrestricted Transactional Memory: Supporting I/O and System Calls within Transactions”. May 2006, pp. 1-12.
Damron et al. “Hybrid Transactional Memory”. Oct. 25, 2006, entire document.
Ald-Tabatabai et al. “Compiler and Runtime Support for Efficient Software Transactional Memory”. Jun. 16, 2006, pp. 26-37.
Tanenbaum, Andrew. “Structured Computer Organization”. Prentice-Hall, Inc. Second Edition. 1984, pp. 10-12.

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