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/*
* Copyright (c) 2011, 2024, 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 vm.mlvm.share;
import java.io.IOException;
public class CustomClassLoaders {
public static ClassLoader makeClassBytesLoader(final byte[] classBytes,
final String className) {
return new ClassLoader() {
@Override
protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
Env.traceDebug("Custom loader: requested=" + name + "; can supply=" + className);
if (!name.equals(className))
return super.loadClass(name, resolve);
Env.traceDebug("Custom loader: defining " + className + " (" + classBytes.length + ") bytes");
return defineClass(className, classBytes, 0, classBytes.length);
}
};
}
public static ClassLoader makeCustomClassLoader(final String forClassName) throws IOException {
return makeClassBytesLoader(FileUtils.readClass(forClassName), forClassName);
}
}
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