com.github.lontime.shaded.org.redisson.api.RRingBuffer Maven / Gradle / Ivy
/**
* Copyright (c) 2013-2021 Nikita Koksharov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.lontime.shaded.org.redisson.api;
/**
* RingBuffer based queue evicts elements from the head if queue capacity became full.
*
* The head element removed if new element added and queue is full.
*
* Must be initialized with capacity size {@link #trySetCapacity(int)} before usage.
*
* @author Nikita Koksharov
*
* @param value type
*/
public interface RRingBuffer extends RQueue, RRingBufferAsync {
/**
* Sets capacity of the queue only if it wasn't set before.
*
* @param capacity - queue capacity
* @return true if capacity set successfully
* false if capacity already set
*/
boolean trySetCapacity(int capacity);
/**
* Sets capacity of the queue and overrides current value.
* Trims queue if previous capacity value was greater than new.
*
* @param capacity - queue capacity
*/
void setCapacity(int capacity);
/**
* Returns remaining capacity of this queue
*
* @return remaining capacity
*/
int remainingCapacity();
/**
* Returns capacity of this queue
*
* @return queue capacity
*/
int capacity();
}