Basic HTML version of Foils prepared May 19 99

Foil 23 Liveness

From Elements of Concurrent Programming in Java Tango Group Internal Technology Seminars -- Spring 99. by Lukasz Beca
1 Something finally happens
2 Liveness failures
  • contention: a thread fails to run even though it is in a runnable state because another thread has taken over CPU
  • dormancy: a non-runnable thread fails to become runnable
  • deadlock: two or more threads block each other
  • premature termination: a thread is killed before it should be
3 Instance variable analysis: allows to find methods that need not be synchronized
4 Splitting synchronization: partition of class into independent, non-interacting subsets
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