mobile/android/thirdparty/ch/boye/httpclientandroidlib/annotation/Immutable.java@6474c204b198 (annotated)
mobile/android/thirdparty/ch/boye/httpclientandroidlib/annotation/Immutable.java
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* |
| michael@0 | 2 | * ==================================================================== |
| michael@0 | 3 | * |
| michael@0 | 4 | * Licensed to the Apache Software Foundation (ASF) under one or more |
| michael@0 | 5 | * contributor license agreements. See the NOTICE file distributed with |
| michael@0 | 6 | * this work for additional information regarding copyright ownership. |
| michael@0 | 7 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
| michael@0 | 8 | * (the "License"); you may not use this file except in compliance with |
| michael@0 | 9 | * the License. You may obtain a copy of the License at |
| michael@0 | 10 | * |
| michael@0 | 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| michael@0 | 12 | * |
| michael@0 | 13 | * Unless required by applicable law or agreed to in writing, software |
| michael@0 | 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
| michael@0 | 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| michael@0 | 16 | * See the License for the specific language governing permissions and |
| michael@0 | 17 | * limitations under the License. |
| michael@0 | 18 | * ==================================================================== |
| michael@0 | 19 | * |
| michael@0 | 20 | * This software consists of voluntary contributions made by many |
| michael@0 | 21 | * individuals on behalf of the Apache Software Foundation. For more |
| michael@0 | 22 | * information on the Apache Software Foundation, please see |
| michael@0 | 23 | * <http://www.apache.org/>. |
| michael@0 | 24 | * |
| michael@0 | 25 | */ |
| michael@0 | 26 | package ch.boye.httpclientandroidlib.annotation; |
| michael@0 | 27 | |
| michael@0 | 28 | import java.lang.annotation.Documented; |
| michael@0 | 29 | import java.lang.annotation.ElementType; |
| michael@0 | 30 | import java.lang.annotation.Retention; |
| michael@0 | 31 | import java.lang.annotation.RetentionPolicy; |
| michael@0 | 32 | import java.lang.annotation.Target; |
| michael@0 | 33 | |
| michael@0 | 34 | /** |
| michael@0 | 35 | * The class to which this annotation is applied is immutable. This means that |
| michael@0 | 36 | * its state cannot be seen to change by callers, which implies that |
| michael@0 | 37 | * <ul> |
| michael@0 | 38 | * <li> all public fields are final, </li> |
| michael@0 | 39 | * <li> all public final reference fields refer to other immutable objects, and </li> |
| michael@0 | 40 | * <li> constructors and methods do not publish references to any internal state |
| michael@0 | 41 | * which is potentially mutable by the implementation. </li> |
| michael@0 | 42 | * </ul> |
| michael@0 | 43 | * Immutable objects may still have internal mutable state for purposes of performance |
| michael@0 | 44 | * optimization; some state variables may be lazily computed, so long as they are computed |
| michael@0 | 45 | * from immutable state and that callers cannot tell the difference. |
| michael@0 | 46 | * <p> |
| michael@0 | 47 | * Immutable objects are inherently thread-safe; they may be passed between threads or |
| michael@0 | 48 | * published without synchronization. |
| michael@0 | 49 | * <p> |
| michael@0 | 50 | * Based on code developed by Brian Goetz and Tim Peierls and concepts |
| michael@0 | 51 | * published in 'Java Concurrency in Practice' by Brian Goetz, Tim Peierls, |
| michael@0 | 52 | * Joshua Bloch, Joseph Bowbeer, David Holmes and Doug Lea. |
| michael@0 | 53 | */ |
| michael@0 | 54 | @Documented |
| michael@0 | 55 | @Target(ElementType.TYPE) |
| michael@0 | 56 | @Retention(RetentionPolicy.CLASS) // The original version used RUNTIME |
| michael@0 | 57 | public @interface Immutable { |
| michael@0 | 58 | } |
