1 /* 2 * ==================================================================== 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * ==================================================================== 20 * 21 * This software consists of voluntary contributions made by many 22 * individuals on behalf of the Apache Software Foundation. For more 23 * information on the Apache Software Foundation, please see 24 * <http://www.apache.org/>. 25 * 26 */ 27 package org.apache.hc.core5.annotation; 28 29 /** 30 Defines types of threading behavior enforced at runtime. 31 */ 32 public enum ThreadingBehavior { 33 34 /** 35 * Instances of classes with the given contract are expected to be fully immutable 36 * and thread-safe. 37 */ 38 IMMUTABLE, 39 40 /** 41 * Instances of classes with the given contract are expected to be immutable if their 42 * dependencies injected at construction time are immutable and are expected to be thread-safe 43 * if their dependencies are thread-safe. 44 */ 45 IMMUTABLE_CONDITIONAL, 46 47 /** 48 * Instances of classes with the given contract are expected to maintain no state 49 * and to be thread-safe. 50 */ 51 STATELESS, 52 53 /** 54 * Instances of classes with the given contract are expected to be fully thread-safe. 55 */ 56 SAFE, 57 58 /** 59 * Instances of classes with the given contract are expected to be thread-safe if their 60 * dependencies injected at construction time are thread-safe. 61 */ 62 SAFE_CONDITIONAL, 63 64 /** 65 * Instances of classes with the given contract are expected to be non thread-safe. 66 */ 67 UNSAFE 68 69 }