The following references are incorporated by reference and contain non-essential matter: 1)
US Provisional Patent Application No. 60/775,580, filed: Feb. 22, 2006, entitled …

BACKGROUND Embodiments of the present invention relate to computer systems, and
more particularly to Such systems that use lock variables to control access to data. Computer …

The present disclosure describes a unique way for each of multiple processes to operate in
parallel using (eg, reading, modifying, and writing to) the same shared data without causing …

A method, system and computer program product for supporting concurrent updates to a
shared data element group while preserving group integrity on behalf of one or more …

BACKGROUND In a distributed data processing environment, multiple copies of the same
file may be kept on multiple nodes to provide faster access and data redundancy. A …

A method and computer system for dynamically selecting an optimal synchronization
mechanism for a data structure in a multiprocessor environment. The method determines a …

NUMA-aware reader-writer locks may leverage lock cohorting techniques and may support
reader re-entrancy. They may implement a delayed sleep mechanism by which a thread that …

4,604,694. A 8/1986 Hough access to one or more resources. Executable entities that are
5,860,159 A 1/1999 Hagersten running Substantially concurrently provide access requests …

An improved reader-writer locking for synchronizing access to shared data. When writing the
shared data, a writer flag is set and a lock is acquired on the shared data. The shared data …

BACKGROUND In multi-threaded programs running on multiprocessors, different threads
may attempt to access shared data structures concurrently. Such access is generally …