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Markus J Kaas

Andreas Daum

Renzo Colle

Daniel Zoch

Henrik Saterdag

Liwei Lu

Bernd Ernesti

Thomas Griesser

Peter T Malik

Guenter Zachmann

Tobias Adler

A system and method for concurrency management in an environment, in which a common pool of objects is shared by multiple users. A virtual lock owner is created for a main thread of a processing task. The main thread spawns parallel threads to update the objects in the common pool with locks. The virtual lock owner is passed to each parallel thread. Each thread (including the main thread) is associated with a thread dependent lock indicator identified by the virtual lock owner. The lifetime of the thread dependent lock indicator is coupled with the lifetime of the associated thread. The virtual lock owner is also associated with a thread independent lock indicator that has a lifetime independent of the lifetime of the main thread. Thus, the parallel threads can perform object update with lock protection even if the main thread aborts.

Concurrency management in cluster computing of business applications

A system and method of updating persistent objects in a persistent store. In response to receipt of a confirmation of task competition, an attempt is made to acquire a lock for corresponding item data in the persistent store. Regardless of whether the lock is acquired, a successful update of the persistent store is acknowledged to the sender of the confirmation within a defined time period.

System and method for handling parallel updates of objects requiring time sensitive acknowledgement

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Mannheim, Germany

Markus J Kaas