J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * @test |
| 26 | * @bug 6274264 6274241 5070281 |
| 27 | * @summary test retransformClasses |
| 28 | * @author Robert Field, Sun Microsystems |
| 29 | * |
| 30 | * @run shell MakeJAR2.sh RetransformAgent RetransformApp 'Can-Retransform-Classes: true' |
| 31 | * @run main/othervm -javaagent:RetransformAgent.jar RetransformApp |
| 32 | */ |
| 33 | |
| 34 | import java.lang.instrument.*; |
| 35 | import java.security.ProtectionDomain; |
| 36 | import java.io.*; |
| 37 | |
| 38 | import ilib.*; |
| 39 | |
| 40 | class RetransformAgent { |
| 41 | |
| 42 | static ClassFileTransformer t1, t2, t3, t4; |
| 43 | static Instrumentation inst; |
| 44 | static boolean succeeded = true; |
| 45 | static int markCount = 0; |
| 46 | static int[] markGolden = {30, 40, 20, 30, 40, 20, 30, 40, 20, 30, 40, 20, |
| 47 | 11, 40, 20, 11, 40, 20, 11, 40, 20, 11, 40, 20}; |
| 48 | |
| 49 | static class Tr implements ClassFileTransformer { |
| 50 | final String trname; |
| 51 | final boolean onLoad; |
| 52 | final int loadIndex; |
| 53 | final boolean onRedef; |
| 54 | final int redefIndex; |
| 55 | final String cname; |
| 56 | final String nname; |
| 57 | |
| 58 | Tr(String trname, boolean onLoad, int loadIndex, boolean onRedef, int redefIndex, |
| 59 | String cname, String nname) { |
| 60 | this.trname = trname; |
| 61 | this.onLoad = onLoad; |
| 62 | this.loadIndex = loadIndex; |
| 63 | this.onRedef = onRedef; |
| 64 | this.redefIndex = redefIndex; |
| 65 | this.cname = cname; |
| 66 | this.nname = nname; |
| 67 | } |
| 68 | |
| 69 | public byte[] transform(ClassLoader loader, |
| 70 | String className, |
| 71 | Class<?> classBeingRedefined, |
| 72 | ProtectionDomain protectionDomain, |
| 73 | byte[] classfileBuffer) { |
| 74 | boolean redef = classBeingRedefined != null; |
| 75 | // System.err.println("hook " + trname + ": " + className + |
| 76 | // (redef? " REDEF" : " LOAD")); |
| 77 | if ((redef? onRedef : onLoad) && className != null && className.equals(cname)) { |
| 78 | Options opt = new Options(); |
| 79 | opt.shouldInstrumentIndexed = true; |
| 80 | opt.shouldInstrumentCall = true; |
| 81 | opt.targetMethod = nname; |
| 82 | opt.fixedIndex = redef? redefIndex : loadIndex; |
| 83 | opt.trackerClassName = "RetransformAgent"; |
| 84 | try { |
| 85 | byte[] newcf = Inject.instrumentation(opt, loader, className, classfileBuffer); |
| 86 | /*** debugging ... |
| 87 | String fname = trname + (redef?"_redef" : ""); |
| 88 | write_buffer(fname + "_before.class", classfileBuffer); |
| 89 | write_buffer(fname + "_instr.class", newcf); |
| 90 | ***/ |
| 91 | System.err.println(trname + ": " + className + " index: " + opt.fixedIndex + |
| 92 | (redef? " REDEF" : " LOAD") + |
| 93 | " len before: " + classfileBuffer.length + |
| 94 | " after: " + newcf.length); |
| 95 | return newcf; |
| 96 | } catch (Throwable ex) { |
| 97 | System.err.println("Injection failure: " + ex); |
| 98 | ex.printStackTrace(); |
| 99 | } |
| 100 | } |
| 101 | return null; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | static void write_buffer(String fname, byte[]buffer) { |
| 106 | try { |
| 107 | FileOutputStream outStream = new FileOutputStream(fname); |
| 108 | outStream.write(buffer, 0, buffer.length); |
| 109 | outStream.close(); |
| 110 | } catch (Exception ex) { |
| 111 | System.err.println("EXCEPTION in write_buffer: " + ex); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | public static void premain (String agentArgs, Instrumentation instArg) { |
| 116 | inst = instArg; |
| 117 | System.err.println("Premain"); |
| 118 | |
| 119 | t1 = new Tr("TR1", false, 10, true, 11, "RetransformApp", "foo"); |
| 120 | inst.addTransformer(t1, true); |
| 121 | t2 = new Tr("TN2", true, 20, true, 21, "RetransformApp", "foo"); |
| 122 | inst.addTransformer(t2, false); |
| 123 | t3 = new Tr("TR3", true, 30, true, 31, "RetransformApp", "foo"); |
| 124 | inst.addTransformer(t3, true); |
| 125 | t4 = new Tr("TN4", true, 40, true, 41, "RetransformApp", "foo"); |
| 126 | inst.addTransformer(t4, false); |
| 127 | } |
| 128 | |
| 129 | public static void undo() { |
| 130 | inst.removeTransformer(t3); |
| 131 | try { |
| 132 | System.err.println("RETRANSFORM"); |
| 133 | inst.retransformClasses(new RetransformApp().getClass()); |
| 134 | } catch (Exception ex) { |
| 135 | System.err.println("EXCEPTION on undo: " + ex); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | public static boolean succeeded() { |
| 140 | return succeeded && markCount == markGolden.length; |
| 141 | } |
| 142 | |
| 143 | public static void callTracker(int mark) { |
| 144 | System.err.println("got mark " + mark); |
| 145 | if (markCount >= markGolden.length || mark != markGolden[markCount++]) { |
| 146 | succeeded = false; |
| 147 | } |
| 148 | } |
| 149 | } |