Mercurial > hg > truffle
annotate test/serviceability/jvmti/UnresolvedClassAgent.java @ 21204:4a5df5570b7f
Truffle: make ReplaceObserver return a boolean in order to consume replace events. It can be useful for nodes to consume all replace events if they are always executed behind a @TruffleBoundary.
author | Christian Humer <christian.humer@gmail.com> |
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date | Mon, 04 May 2015 11:24:13 +0200 |
parents | 4c76be9856fc |
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1 /* |
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2 * Copyright (c) 2014, 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 import java.io.DataInputStream; |
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25 import java.io.File; |
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26 import java.io.FileInputStream; |
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27 import java.lang.instrument.ClassDefinition; |
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28 import java.lang.instrument.Instrumentation; |
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29 |
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30 /* |
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31 * This class is present during compilation, but will be deleted before execution. |
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32 */ |
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33 class MyUnresolvedClass { |
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34 static void bar() { |
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35 } |
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36 } |
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37 |
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38 class MyRedefinedClass { |
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39 static void foo() { |
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40 MyUnresolvedClass.bar(); |
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41 } |
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42 } |
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43 |
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44 public class UnresolvedClassAgent { |
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45 public static void main(String... args) { |
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46 } |
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47 |
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48 public static void premain(String args, Instrumentation inst) throws Exception { |
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49 try { |
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50 MyRedefinedClass.foo(); |
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51 } catch(NoClassDefFoundError err) { |
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52 System.out.println("NoClassDefFoundError (expected)"); |
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53 } |
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54 |
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55 File f = new File(System.getProperty("test.classes"), "MyRedefinedClass.class"); |
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56 byte[] buf = new byte[(int)f.length()]; |
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57 try (DataInputStream dis = new DataInputStream(new FileInputStream(f))) { |
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58 dis.readFully(buf); |
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59 } |
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60 ClassDefinition cd = new ClassDefinition(MyRedefinedClass.class, buf); |
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61 inst.redefineClasses(new ClassDefinition[] {cd}); |
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62 |
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63 try { |
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64 MyRedefinedClass.foo(); |
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65 } catch(NoClassDefFoundError err) { |
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66 System.out.println("NoClassDefFoundError (expected again)"); |
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67 } |
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68 } |
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69 } |