提交 6bb8ec25 编写于 作者: M mullan

Merge

/* /*
* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*/ *
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.io; package java.io;
/** /**
* Context during upcalls from object stream to class-defined * Context during upcalls from object stream to class-defined
* readObject/writeObject methods. * readObject/writeObject methods.
* Holds object currently being deserialized and descriptor for current class. * Holds object currently being deserialized and descriptor for current class.
* *
* This context keeps track of the thread it was constructed on, and allows * This context keeps track of the thread it was constructed on, and allows
* only a single call of defaultReadObject, readFields, defaultWriteObject * only a single call of defaultReadObject, readFields, defaultWriteObject
* or writeFields which must be invoked on the same thread before the class's * or writeFields which must be invoked on the same thread before the class's
* readObject/writeObject method has returned. * readObject/writeObject method has returned.
* If not set to the current thread, the getObj method throws NotActiveException. * If not set to the current thread, the getObj method throws NotActiveException.
*/ */
final class SerialCallbackContext { final class SerialCallbackContext {
private final Object obj; private final Object obj;
private final ObjectStreamClass desc; private final ObjectStreamClass desc;
/** /**
* Thread this context is in use by. * Thread this context is in use by.
* As this only works in one thread, we do not need to worry about thread-safety. * As this only works in one thread, we do not need to worry about thread-safety.
*/ */
private Thread thread; private Thread thread;
public SerialCallbackContext(Object obj, ObjectStreamClass desc) { public SerialCallbackContext(Object obj, ObjectStreamClass desc) {
this.obj = obj; this.obj = obj;
this.desc = desc; this.desc = desc;
this.thread = Thread.currentThread(); this.thread = Thread.currentThread();
} }
public Object getObj() throws NotActiveException { public Object getObj() throws NotActiveException {
checkAndSetUsed(); checkAndSetUsed();
return obj; return obj;
} }
public ObjectStreamClass getDesc() { public ObjectStreamClass getDesc() {
return desc; return desc;
} }
private void checkAndSetUsed() throws NotActiveException { private void checkAndSetUsed() throws NotActiveException {
if (thread != Thread.currentThread()) { if (thread != Thread.currentThread()) {
throw new NotActiveException( throw new NotActiveException(
"not in readObject invocation or fields already read"); "not in readObject invocation or fields already read");
} }
thread = null; thread = null;
} }
public void setUsed() { public void setUsed() {
thread = null; thread = null;
} }
} }
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