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annotate test/compiler/whitebox/DeoptimizeMultipleOSRTest.java @ 20915:916aac9fe6f7

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author Josef Eisl <josef.eisl@jku.at>
date Mon, 13 Apr 2015 15:10:55 +0200
parents 3c87c13918fb
children
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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 }