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97 lines
3.1 KiB
Java
97 lines
3.1 KiB
Java
/*
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* @(#) $(JCGO)/goclsp/vm/gnu/java/lang/VMInstrumentationImpl.java --
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* VM specific class instrumentation implementation.
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**
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* Project: JCGO (http://www.ivmaisoft.com/jcgo/)
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* Copyright (C) 2001-2007 Ivan Maidanski <ivmai@ivmaisoft.com>
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* All rights reserved.
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**
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* Class specification origin: GNU Classpath v0.93 vm/reference
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*/
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/*
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* This 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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**
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* This software 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 (GPL) for more details.
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**
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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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**
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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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*/
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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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final class VMInstrumentationImpl
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{
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private VMInstrumentationImpl() {}
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static boolean isRedefineClassesSupported()
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{
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return isRedefineClassesSupported0() != 0;
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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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redefineClasses0(inst, definitions);
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}
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static Class[] getAllLoadedClasses()
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{
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return classesGuardCopy(getAllLoadedClasses0());
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}
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static Class[] getInitiatedClasses(ClassLoader loader)
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{
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return classesGuardCopy(getInitiatedClasses0(loader));
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}
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static native long getObjectSize(Object obj); /* JVM-core */
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static final int getAllLoadedClassCount()
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{ /* used by VM classes only */
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return getAllLoadedClasses0().length;
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}
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private static Class[] classesGuardCopy(Class[] classes)
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{
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Class[] newClasses = new Class[classes.length];
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System.arraycopy(classes, 0, newClasses, 0, classes.length);
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return newClasses;
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}
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private static native int isRedefineClassesSupported0(); /* JVM-core */
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private static native int redefineClasses0(Object inst,
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Object[] definitions); /* JVM-core */
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private static native
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Class[] getAllLoadedClasses0(); /* JVM-core */ /* const data */
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private static native Class[] getInitiatedClasses0(
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Object loader); /* JVM-core */
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}
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