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  1. JDK
  2. JDK-6347010

(spec thread) Implementation detail poses hazard for wait(), notify{All}?() usage with join()

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    • Resolved In Build:
      b18
    • CPU:
      generic
    • OS:
      generic
    • Verification:
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        Users need to understand that using wait, notify, and notifyAll on a Thread instance is a bad idea because Sun's implementation of Thread.join uses a loop of Object.wait on the Thread instance that is conditioned on !isAlive() and the JVM does a notifyAll on this object when the thread terminates. This means, for example, that thread termination can be confused with a notify or notifyAll if careful control of visibility is not maintained or inadequate condition expressions are used, causing an inappropriate escape from a wait loop. It also means users might depend on a "free" notifyAll stemming from thread termination when other compliant implementations will *NOT* provide this.

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                Assignee:
                chegar Chris Hegarty
                Reporter:
                psoper Pete Soper (Inactive)
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