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dump Java Thread 的几种状态及其含义

The values of the Java thread state and the internal VM thread state can be:

  • R – Runnable – the thread is able to run when given the chance.
  • CW – Condition Wait – the thread is waiting. For example, because:
    • The thread has been blocked for I/O
    • A wait() method is called to wait on a monitor being notified
    • The thread is synchronizing with another thread with a join() call
  • S – Suspended – the thread has been suspended by another thread.
  • Z – Zombie – the thread has been killed.
  • P – Parked – the thread has been parked by the new concurrency API (java.util.concurrent).
  • B – Blocked – the thread is waiting to obtain a lock that something else currently owns.