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Non-traditional ways for inter-task communication


Philippas Tsigas and Håkan Sundell, Chalmers University of Technology



Start time:

2000-02-16 11:00

End time:

2000-02-16 11:00


Turing Conference Room

Contact person:


Non-blocking implementation of shared data objects is a new alternative approach for the problem of inter-task communication. Non-blocking mechanisms allow multiple tasks to access a shared object at the same time, but without enforcing mutual exclusion to accomplish this. Non-blocking inter-task communication does not allow one task to block another task gives significant advantages over lock-based schemes because:
* it does not give priority inversion, avoids lock convoys that make scheduling analysis hard and delays longer.
* it provides high fault tolerance (processor failures will never corrupt shared data objects) and eliminates deadlock scenarios from two or more tasks both waiting for locks held by the other.
* and more significantly it completely eliminates the interference between process schedule and synchronisation.
In this talk we would like to present part of our research on designing, analysing and evaluating the performance of non-blocking implementations on real-time and/or multiprocessor systems.