Java Concurrency Mechanism (8)--

Source: Internet
Author: User

Java Concurrency Programming: the use of auxiliary classes under the concurrent package

Organized by: Blog Park-Haizi-http://www.cnblogs.com/dolphin0520/p/3920397.html

1. Countdownlatch Usage:

The thread that calls await () waits until count reaches 0, and count cannot be reused.

1.1. Construction and Method:

Countdownlatch (int
View Code

1.2. Example:
2. Cyclicbarrier Usage: Loopback fence, function as above, let a group of threads wait for a state (barrier state) and then start executing at the same time.
1.1.
public Cyclicbarrier (int parties, Runnable barrieraction) {
}//

public Cyclicbarrier (int parties) {
}
Await ()
1.2.

3. Semaphore Usage: Signal volume

Java Concurrency Mechanism (8)--

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