Showing the changes to java/pkg/java/io/SerialCallbackContext.java (1 of 18352 files). Show all
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| 1 | + /* | |
| 2 | + * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. | |
| 4 | + */ | |
| 5 | + | |
| 6 | + package java.io; | |
| 7 | + | |
| 8 | + /** | |
| 9 | + * Context during upcalls from object stream to class-defined | |
| 10 | + * readObject/writeObject methods. | |
| 11 | + * Holds object currently being deserialized and descriptor for current class. | |
| 12 | + * | |
| 13 | + * This context keeps track of the thread it was constructed on, and allows | |
| 14 | + * only a single call of defaultReadObject, readFields, defaultWriteObject | |
| 15 | + * or writeFields which must be invoked on the same thread before the class's | |
| 16 | + * readObject/writeObject method has returned. | |
| 17 | + * If not set to the current thread, the getObj method throws NotActiveException. | |
| 18 | + */ | |
| 19 | + final class SerialCallbackContext { | |
| 20 | + private final Object obj; | |
| 21 | + private final ObjectStreamClass desc; | |
| 22 | + /** | |
| 23 | + * Thread this context is in use by. | |
| 24 | + * As this only works in one thread, we do not need to worry about thread-safety. | |
| 25 | + */ | |
| 26 | + private Thread thread; | |
| 27 | + | |
| 28 | + public SerialCallbackContext(Object obj, ObjectStreamClass desc) { | |
| 29 | + this.obj = obj; | |
| 30 | + this.desc = desc; | |
| 31 | + this.thread = Thread.currentThread(); | |
| 32 | + } | |
| 33 | + | |
| 34 | + public Object getObj() throws NotActiveException { | |
| 35 | + checkAndSetUsed(); | |
| 36 | + return obj; | |
| 37 | + } | |
| 38 | + | |
| 39 | + public ObjectStreamClass getDesc() { | |
| 40 | + return desc; | |
| 41 | + } | |
| 42 | + | |
| 43 | + private void checkAndSetUsed() throws NotActiveException { | |
| 44 | + if (thread != Thread.currentThread()) { | |
| 45 | + throw new NotActiveException( | |
| 46 | + "not in readObject invocation or fields already read"); | |
| 47 | + } | |
| 48 | + thread = null; | |
| 49 | + } | |
| 50 | + | |
| 51 | + public void setUsed() { | |
| 52 | + thread = null; | |
| 53 | + } | |
| 54 | + } | |