I notice there is no isWaiting() method. Is it possible to test whether any thread is blocked wait()ing on a specific object? Given a Thread object, is it possible to find which object, if any, that Thread is wait()ing on?
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I notice there is no isWaiting() method. Is it possible to test whether any thread is blocked wait()ing on a specific object? Given a Thread object, is it possible to find which object, if any, that Thread is wait()ing on?
Well, for the waiting state try
thread.getState() == Thread.State.WAITING || thread.getState() == TIMED_WAITING.As for the object the thread waits for, I’m not sure but I doubt you could get the object the thread is wating for without native code. The otherway round, i.e. getting the thread which holds a lock on a given object, also seems to be impossible with pure Java (see here: Programmatically determine which Java thread holds a lock).