Reentrantlock the process of acquiring and releasing locks

Source: Internet
Author: User

Read an article, I think the analysis is very thorough, then summed up in place, address:

String The get and release operations together in a simple look:

  • When the lock is acquired, the current thread is placed in the synchronization queue, and the state of the previous node is set to the signal state and then blocked
  • When the previous node of this node succeeds in acquiring the lock, the previous node becomes the head of the entire synchronization queue.
  • When the current node releases the lock, it wakes up the node of the current thread, and then the node of the current thread can successfully acquire the lock.
  • This time it goes to the head of the entire queue, and then the release operation can wake up the next.

Reentrantlock the process of acquiring and releasing locks

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