Mercurial > hg > truffle
annotate test/runtime/8003720/VictimClassLoader.java @ 15467:4e3c2247daf4
simplify ReentrantNodeIterator
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Fri, 02 May 2014 12:02:27 +0200 |
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1 /* |
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 public class VictimClassLoader extends ClassLoader { |
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26 public static long counter = 0; |
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27 |
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28 private int which = (int) ++counter; |
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29 |
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30 protected VictimClassLoader() { |
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31 super(VictimClassLoader.class.getClassLoader()); |
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32 } |
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33 |
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34 protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException { |
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35 Class c; |
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36 if (!name.endsWith("Victim")) { |
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37 c = super.loadClass(name, resolve); |
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38 return c; |
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39 } |
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40 |
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41 c = findLoadedClass(name); |
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42 if (c != null) { |
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43 return c; |
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44 } |
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45 |
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46 byte[] buf = readClassFile(name); |
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47 c = defineClass(name, buf, 0, buf.length); |
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48 resolveClass(c); |
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49 |
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50 if (c.getClassLoader() != this) { |
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51 throw new AssertionError(); |
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52 } |
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53 |
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54 Test8003720.println("loaded " + c + "#" + System.identityHashCode(c) + " in " + c.getClassLoader()); |
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55 return c; |
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56 } |
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57 |
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58 static byte[] readClassFile(String name) { |
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59 try { |
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60 String rname = name.substring(name.lastIndexOf('.') + 1) + ".class"; |
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61 java.net.URL url = VictimClassLoader.class.getResource(rname); |
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62 Test8003720.println("found " + rname + " = " + url); |
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63 |
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64 java.net.URLConnection connection = url.openConnection(); |
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65 int contentLength = connection.getContentLength(); |
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66 byte[] buf = readFully(connection.getInputStream(), contentLength); |
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67 |
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68 return Asmator.fixup(buf); |
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69 } catch (java.io.IOException ex) { |
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70 throw new Error(ex); |
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71 } |
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72 } |
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73 |
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74 static byte[] readFully(java.io.InputStream in, int len) throws java.io.IOException { |
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75 // Warning here: |
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76 return sun.misc.IOUtils.readFully(in, len, true); |
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77 } |
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78 |
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79 public void finalize() { |
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80 Test8003720.println("Goodbye from " + this); |
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81 } |
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82 |
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83 public String toString() { |
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84 return "VictimClassLoader#" + which; |
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85 } |
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86 } |