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 | } | ||