apache-ignite

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// Licensed to the Apache Software Foundation (ASF) under one or more
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// contributor license agreements.  See the NOTICE file distributed with
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// this work for additional information regarding copyright ownership.
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// The ASF licenses this file to You under the Apache License, Version 2.0
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// (the "License"); you may not use this file except in compliance with
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// the License.  You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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= CountDownLatch
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:javaFile: {javaCodeDir}/DataStructures.java
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`IgniteCountDownLatch` provides functionality that is similar to that of `java.util.concurrent.CountDownLatch` and allows you to synchronize operations accross cluster nodes.
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A distributed CountDownLatch can be created as follows:
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[source, java]
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----
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include::{javaFile}[tags=count-down-latch, indent=0]
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----
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After the above code is executed, all nodes in the specified cache will be able to synchronize on the latch named `latchName`.
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Below is a code example of such synchronization:
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[source, java]
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----
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include::{javaFile}[tags=sync-on-latch, indent=0]
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----
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