Read lock and write lock management system based upon mutex and

Details Read lock and write lock management system based upon mutex and Read lock and write lock management system based upon mutex and

1997-09-24

2000-02-22

Banankhah, Majid A.

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

Least weight routing

G06F 900

Patent

active

060291907

ABSTRACT:
A method and apparatus for implementing a read/write lock mechanism in software. In an operating environment that allows objects such threads to wait on a plurality of synchronization objects simultaneously, a read/write lock can be implemented using two synchronization objects such as a mutex and a semaphore. Further, a variable is introduced to track the number of reader threads awaiting to read protected data. The read/write lock permits a plurality of reader threads to access protected data simultaneously, while only allowing a single writer thread access to a protected data location.

REFERENCES:
patent: 5410697 (1995-04-01), Baird et al.
patent: 5644768 (1997-07-01), Periwal et al.
Daniel Glasser, "Efficient Synchronization Techniques for Multithreaded Win32-based Applications", Microsoft Systems Journal, 1995 #2 (Feb.), pp. 1-37.

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