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120 lines
4.0 KiB
Java
120 lines
4.0 KiB
Java
/* VMInstrumentationImpl.java -- interface for the GNU implementation
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of InstrumentationImpl
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.lang;
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import java.lang.instrument.ClassDefinition;
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import java.lang.instrument.Instrumentation;
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/**
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* @author Nicolas Geoffray (nicolas.geoffray@menlina.com)
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* @since 1.5
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*/
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final class VMInstrumentationImpl
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{
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/**
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* Returns if the current JVM supports class redefinition
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*
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* @return true if the current JVM supports class redefinition
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*/
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static boolean isRedefineClassesSupported() { return false; }
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/**
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* Redefines classes given as parameters. The method has to call
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* the callTransformers from InstrumentationImpl
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*
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* @param inst an instrumentation object
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* @param definitions an array of bytecode<->class correspondance
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*
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* @throws ClassNotFoundException if a class cannot be found
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* @throws UnmodifiableClassException if a class cannot be modified
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* @throws UnsupportedOperationException if the JVM does not support
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* redefinition or the redefinition made unsupported changes
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* @throws ClassFormatError if a class file is not valid
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* @throws NoClassDefFoundError if a class name is not equal to the name
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* in the class file specified
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* @throws UnsupportedClassVersionError if the class file version numbers
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* are unsupported
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* @throws ClassCircularityError if circularity occured with the new
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* classes
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* @throws LinkageError if a linkage error occurs
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*/
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static void redefineClasses(Instrumentation inst,
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ClassDefinition[] definitions)
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{
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}
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/**
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* Get all the classes loaded by the JVM.
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*
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* @return an array containing all the classes loaded by the JVM. The array
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* is empty if no class is loaded.
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*/
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static Class[] getAllLoadedClasses()
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{
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return new Class[0];
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}
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/**
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* Get all the classes loaded by a given class loader
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*
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* @param loader the loader
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*
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* @return an array containing all the classes loaded by the given loader.
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* The array is empty if no class was loaded by the loader.
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*/
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static Class[] getInitiatedClasses(ClassLoader loader)
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{
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return new Class[0];
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}
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/**
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* Get the size of an object. The object is not null
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*
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* @param objectToSize the object
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* @return the size of the object
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*/
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static long getObjectSize(Object objectToSize)
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{
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return 0;
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}
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}
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