Java parked thread
java, multithreading
Solution
Look at Javadoc the `park()` method:
Disables the current thread for thread scheduling purposes unless the permit is available. If the permit is available then it is consumed and the call returns immediately; otherwise the current thread becomes disabled for thread scheduling purposes and lies dormant until one of three things happens:
Some other thread invokes unpark with the current thread as the target; or Some other thread interrupts the current thread; or The call spuriously (that is, for no reason) returns. This method does not report which of these caused the method to return. Callers should re-check the conditions which caused the thread to park in the first place. Callers may also determine, for example, the interrupt status of the thread upon return.
So a parked thread is a thread blocked using `LockSupport.park()`.
Problem
What is the difference between a parked thread and a waiting thread in java ? I've a jboss core dump and analysing it is showing a lot of parked threads.