| /* ObjectInputStream.java -- Class used to read serialized objects |
| Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2005 |
| Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.io; |
| |
| import gnu.classpath.Configuration; |
| import gnu.classpath.VMStackWalker; |
| import java.lang.reflect.Constructor; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| |
| final class VMObjectInputStream |
| { |
| static |
| { |
| if (Configuration.INIT_LOAD_LIBRARY) |
| { |
| System.loadLibrary("javaio"); |
| } |
| } |
| |
| /** |
| * PrivilegedAction needed for Class.getClassLoader() |
| */ |
| private static PrivilegedAction loaderAction = new PrivilegedAction() |
| { |
| /** |
| * Returns the first user defined class loader on the call stack, or the |
| * context class loader of the current thread, when no non-null class loader |
| * was found. |
| */ |
| public Object run() |
| { |
| Class[] ctx = VMStackWalker.getClassContext(); |
| |
| for (int i = 0; i < ctx.length; i++) |
| { |
| ClassLoader cl = ctx[i].getClassLoader(); |
| if (cl != null) |
| return cl; |
| } |
| return Thread.currentThread().getContextClassLoader(); |
| } |
| }; |
| |
| /** |
| * Returns the first user defined class loader on the call stack, or the |
| * context class loader of the current thread, when no non-null class loader |
| * was found. |
| * |
| * @return the class loader |
| */ |
| static ClassLoader currentClassLoader() |
| { |
| return (ClassLoader) AccessController.doPrivileged(loaderAction); |
| } |
| |
| /** |
| * Allocates a new Object of type clazz but without running the |
| * default constructor on it. It then calls the given constructor on |
| * it. The given constructor method comes from the constr_clazz |
| * which is a super class of the given clazz. |
| */ |
| static native Object allocateObject(Class clazz, Class constr_clazz, |
| Constructor constructor) |
| throws InstantiationException; |
| } |