• file
• revisions
• annotate
• diff
• comparison
• raw

test/runtime/8003720/VictimClassLoader.java@4bc28e6b9aba (annotated)

test/runtime/8003720/VictimClassLoader.java

Thu, 01 May 2014 14:57:02 -0700

author

amurillo

date

Thu, 01 May 2014 14:57:02 -0700

changeset 6651

4bc28e6b9aba

parent 0

f90c822e73f8

child 9804

8b80409d5840

permissions

-rw-r--r--

Added tag hs25.20-b13 for changeset 798f5b02be89

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	public class VictimClassLoader extends ClassLoader {
aoqi@0	26	public static long counter = 0;
aoqi@0	27
aoqi@0	28	private int which = (int) ++counter;
aoqi@0	29
aoqi@0	30	protected VictimClassLoader() {
aoqi@0	31	super(VictimClassLoader.class.getClassLoader());
aoqi@0	32	}
aoqi@0	33
aoqi@0	34	protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
aoqi@0	35	Class c;
aoqi@0	36	if (!name.endsWith("Victim")) {
aoqi@0	37	c = super.loadClass(name, resolve);
aoqi@0	38	return c;
aoqi@0	39	}
aoqi@0	40
aoqi@0	41	c = findLoadedClass(name);
aoqi@0	42	if (c != null) {
aoqi@0	43	return c;
aoqi@0	44	}
aoqi@0	45
aoqi@0	46	byte[] buf = readClassFile(name);
aoqi@0	47	c = defineClass(name, buf, 0, buf.length);
aoqi@0	48	resolveClass(c);
aoqi@0	49
aoqi@0	50	if (c.getClassLoader() != this) {
aoqi@0	51	throw new AssertionError();
aoqi@0	52	}
aoqi@0	53
aoqi@0	54	Test8003720.println("loaded " + c + "#" + System.identityHashCode(c) + " in " + c.getClassLoader());
aoqi@0	55	return c;
aoqi@0	56	}
aoqi@0	57
aoqi@0	58	static byte[] readClassFile(String name) {
aoqi@0	59	try {
aoqi@0	60	String rname = name.substring(name.lastIndexOf('.') + 1) + ".class";
aoqi@0	61	java.net.URL url = VictimClassLoader.class.getResource(rname);
aoqi@0	62	Test8003720.println("found " + rname + " = " + url);
aoqi@0	63
aoqi@0	64	java.net.URLConnection connection = url.openConnection();
aoqi@0	65	int contentLength = connection.getContentLength();
aoqi@0	66	byte[] buf = readFully(connection.getInputStream(), contentLength);
aoqi@0	67
aoqi@0	68	return Asmator.fixup(buf);
aoqi@0	69	} catch (java.io.IOException ex) {
aoqi@0	70	throw new Error(ex);
aoqi@0	71	}
aoqi@0	72	}
aoqi@0	73
aoqi@0	74	static byte[] readFully(java.io.InputStream in, int len) throws java.io.IOException {
aoqi@0	75	// Warning here:
aoqi@0	76	return sun.misc.IOUtils.readFully(in, len, true);
aoqi@0	77	}
aoqi@0	78
aoqi@0	79	public void finalize() {
aoqi@0	80	Test8003720.println("Goodbye from " + this);
aoqi@0	81	}
aoqi@0	82
aoqi@0	83	public String toString() {
aoqi@0	84	return "VictimClassLoader#" + which;
aoqi@0	85	}
aoqi@0	86	}