Mercurial > hg > graal-jvmci-8
view agent/src/share/classes/sun/jvm/hotspot/utilities/ProcImageClassLoader.java @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
author | coleenp |
---|---|
date | Thu, 27 Jan 2011 16:11:27 -0800 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved. * 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. * * 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 sun.jvm.hotspot.utilities; import java.io.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.tools.jcore.*; /** Class loader that loads classes from the process/core image of the debuggee. */ public class ProcImageClassLoader extends ClassLoader { public ProcImageClassLoader(ClassLoader parent) { super(parent); } public ProcImageClassLoader() { this(Thread.currentThread().getContextClassLoader()); } protected Class findClass(String className) throws ClassNotFoundException { try { ByteArrayOutputStream bos = new ByteArrayOutputStream(); InstanceKlass klass = SystemDictionaryHelper.findInstanceKlass(className); ClassWriter cw = new ClassWriter(klass, bos); cw.write(); byte[] buf = bos.toByteArray(); return defineClass(className, buf, 0, buf.length); } catch (Exception e) { throw (ClassNotFoundException) new ClassNotFoundException().initCause(e); } } }