| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.cassandra.utils; |
| |
| import org.apache.cassandra.utils.concurrent.SharedCloseable; |
| |
| public interface IFilter extends SharedCloseable |
| { |
| interface FilterKey |
| { |
| /** Places the murmur3 hash of the key in the given long array of size at least two. */ |
| void filterHash(long[] dest); |
| } |
| |
| void add(FilterKey key); |
| |
| boolean isPresent(FilterKey key); |
| |
| void clear(); |
| |
| long serializedSize(); |
| |
| void close(); |
| |
| IFilter sharedCopy(); |
| |
| /** |
| * Returns the amount of memory in bytes used off heap. |
| * @return the amount of memory in bytes used off heap |
| */ |
| long offHeapSize(); |
| } |