53 lines
2.0 KiB
Java
53 lines
2.0 KiB
Java
/*
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* Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package vm.mlvm.share;
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import java.io.IOException;
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import vm.share.FileUtils;
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public class CustomClassLoaders {
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public static ClassLoader makeClassBytesLoader(final byte[] classBytes,
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final String className) {
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return new ClassLoader() {
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@Override
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protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
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Env.traceDebug("Custom loader: requested=" + name + "; can supply=" + className);
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if (!name.equals(className))
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return super.loadClass(name, resolve);
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Env.traceDebug("Custom loader: defining " + className + " (" + classBytes.length + ") bytes");
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return defineClass(className, classBytes, 0, classBytes.length);
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}
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};
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}
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public static ClassLoader makeCustomClassLoader(final String forClassName) throws IOException {
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return makeClassBytesLoader(FileUtils.readClass(forClassName), forClassName);
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}
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}
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