Java.util.concurrent Synchronizers: Difference between revisions
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=CountDownLatch= | =CountDownLatch= | ||
==External== | |||
* https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html | * https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html | ||
==Overview== | |||
A <tt>CountDownLatch</tt> is a synchronization tool that allows one or more threads to wait on it until a certain number of operations being performed in other threads completes. The latch is initialized with a count. Any thread calling <tt>await()</tt> blocks unit the count reaches zero, after which it is released. The count is decremented with <tt>countDown()</tt>. | |||
=Semaphore= | =Semaphore= | ||
Revision as of 01:15, 25 January 2016
Internal
CountDownLatch
External
Overview
A CountDownLatch is a synchronization tool that allows one or more threads to wait on it until a certain number of operations being performed in other threads completes. The latch is initialized with a count. Any thread calling await() blocks unit the count reaches zero, after which it is released. The count is decremented with countDown().