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Non-traditional ways for inter-task communication
Philippas Tsigas and Håkan Sundell, Chalmers University of Technology
Turing Conference Room
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
* 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.