53 lines
1.9 KiB
Java
53 lines
1.9 KiB
Java
/*
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* Copyright (c) 2014, 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 gc.g1.unloading.classloaders;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.security.CodeSigner;
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import java.security.CodeSource;
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/**
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*
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* This is just a classloader that doesn't follow delegation pattern.
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*
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*/
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public class DoItYourselfClassLoader extends FinalizableClassloader {
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private static long counter = 0;
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/**
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* We force different classes to have different protection domains
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*/
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public Class<?> defineClass(String name, byte[] bytes) {
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URL url;
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try {
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url = new URL("http://random.url.com/" + (counter++));
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} catch (MalformedURLException e) {
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throw new RuntimeException("This is impossible, but there is mistake in simple call to URL constructor", e);
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}
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return defineClass(name, bytes, 0, bytes.length, new CodeSource(url, new CodeSigner[] {}));
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}
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}
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