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annotate test/compiler/whitebox/DeoptimizeMultipleOSRTest.java @ 21784:f4e1d958f1c3
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author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 08 Jun 2015 19:19:45 +0200 |
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1 /* |
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2 * Copyright (c) 2013, 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 sun.hotspot.WhiteBox; |
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25 import java.lang.reflect.Executable; |
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26 import java.lang.reflect.Method; |
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27 |
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28 /* |
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29 * @test DeoptimizeMultipleOSRTest |
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30 * @bug 8061817 |
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31 * @library /testlibrary /testlibrary/whitebox |
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32 * @build DeoptimizeMultipleOSRTest |
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33 * @run main ClassFileInstaller sun.hotspot.WhiteBox |
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34 * sun.hotspot.WhiteBox$WhiteBoxPermission |
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35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,DeoptimizeMultipleOSRTest::triggerOSR DeoptimizeMultipleOSRTest |
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36 * @summary testing of WB::deoptimizeMethod() |
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37 */ |
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38 public class DeoptimizeMultipleOSRTest { |
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39 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); |
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40 private static final long BACKEDGE_THRESHOLD = 150000; |
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41 private Method method; |
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42 private int counter = 0; |
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43 |
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44 public static void main(String[] args) throws Exception { |
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45 DeoptimizeMultipleOSRTest test = new DeoptimizeMultipleOSRTest(); |
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46 test.test(); |
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47 } |
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48 |
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49 /** |
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50 * Triggers two different OSR compilations for the same method and |
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51 * checks if WhiteBox.deoptimizeMethod() deoptimizes both. |
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52 * |
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53 * @throws Exception |
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54 */ |
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55 public void test() throws Exception { |
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56 method = DeoptimizeMultipleOSRTest.class.getDeclaredMethod("triggerOSR", boolean.class, long.class); |
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57 // Trigger two OSR compiled versions |
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58 triggerOSR(true, BACKEDGE_THRESHOLD); |
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59 triggerOSR(false, BACKEDGE_THRESHOLD); |
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60 // Wait for compilation |
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61 CompilerWhiteBoxTest.waitBackgroundCompilation(method); |
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62 // Deoptimize |
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63 WHITE_BOX.deoptimizeMethod(method, true); |
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64 if (WHITE_BOX.isMethodCompiled(method, true)) { |
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65 throw new AssertionError("Not all OSR compiled versions were deoptimized"); |
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66 } |
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67 } |
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68 |
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69 /** |
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70 * Triggers OSR compilations by executing loops. |
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71 * |
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72 * @param first Determines which loop to execute |
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73 * @param limit The number of loop iterations |
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74 */ |
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75 public void triggerOSR(boolean first, long limit) { |
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76 if (limit != 1) { |
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77 // Warmup method to avoid uncommon traps |
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78 for (int i = 0; i < limit; ++i) { |
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79 triggerOSR(first, 1); |
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80 } |
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81 CompilerWhiteBoxTest.waitBackgroundCompilation(method); |
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82 } |
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83 if (first) { |
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84 // Trigger OSR compilation 1 |
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85 for (int i = 0; i < limit; ++i) { |
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86 counter++; |
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87 } |
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88 } else { |
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89 // Trigger OSR compilation 2 |
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90 for (int i = 0; i < limit; ++i) { |
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91 counter++; |
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92 } |
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93 } |
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94 } |
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95 } |