| Package | Description | 
|---|---|
| com.hazelcast.collection.impl.queue | |
| com.hazelcast.concurrent.countdownlatch | This package contains ICountDownLatch functionality for Hazelcast. The ICountDownLatch is the distributed version of the CountDownLatch. | 
| com.hazelcast.concurrent.semaphore | This package contains ISemaphore functionality for Hazelcast. The ISemaphore is the distributed version of the Semaphore. | 
| com.hazelcast.ringbuffer.impl | Contains the  Ringbufferimplementation classes. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | QueueWaitNotifyKeyWait thread till notify the key. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | LatchKey | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | SemaphoreWaitNotifyKey | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | RingbufferWaitNotifyKeyA  AbstractWaitNotifyKeyto make it possible to wait for an item to be published in the ringbuffer. | 
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