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package java.util.concurrent; |
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/** |
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* A <tt>CountDownLatch</tt> allows one set of threads to wait until |
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* the actions of another set of threads allow the first set to proceed. |
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* <p>A <tt>CountDownLatch</tt> is initialized with a given <em>count</em>. |
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* The {@link #await} methods block until the current {@link #getCount count} |
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* reaches zero due to invocations of the {@link #countDown} method, |
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* after which all waiting threads are |
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* A synchronization aid that allows a set of threads to wait until |
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* the actions of another set of threads allow the first set to |
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* proceed. |
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* |
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* <p>A <tt>CountDownLatch</tt> is initialized with a given |
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* <em>count</em>. The {@link #await} methods block until the current |
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* {@link #getCount count} reaches zero due to invocations of the |
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* {@link #countDown} method, after which all waiting threads are |
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* released and any subsequent invocations of {@link #await} return |
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* immediately. This is a one-shot phenomenon -- the count |
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* cannot be reset. If you need a version that resets the count, |
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* consider using a {@link CyclicBarrier}. |
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* immediately. This is a one-shot phenomenon -- the count cannot be |
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* reset. If you need a version that resets the count, consider using |
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* a {@link CyclicBarrier}. |
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* |
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* <p>A <tt>CountDownLatch</tt> is a versatile synchronization tool |
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* and can be used for a number of purposes. |
