annotate test/compiler/whitebox/IsMethodCompilableTest.java @ 12073:f99558245e5c

8022832: Add WB APIs for OSR compilation Reviewed-by: kvn
author iignatyev
date Wed, 14 Aug 2013 23:50:23 +0400
parents 11237ee74aae
children 303826f477c6
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1 /*
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2 * Copyright (c) 2013, 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 * @test IsMethodCompilableTest
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26 * @bug 8007270 8006683 8007288 8022832
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27 * @library /testlibrary /testlibrary/whitebox
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28 * @build IsMethodCompilableTest
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29 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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30 * @run main/othervm/timeout=2400 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,TestCase$Helper::* IsMethodCompilableTest
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31 * @summary testing of WB::isMethodCompilable()
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32 * @author igor.ignatyev@oracle.com
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33 */
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34 public class IsMethodCompilableTest extends CompilerWhiteBoxTest {
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35 /**
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36 * Value of {@code -XX:PerMethodRecompilationCutoff}
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37 */
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38 protected static final long PER_METHOD_RECOMPILATION_CUTOFF;
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39
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40 static {
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41 long tmp = Long.parseLong(
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42 getVMOption("PerMethodRecompilationCutoff", "400"));
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43 if (tmp == -1) {
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44 PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */;
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45 } else {
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46 PER_METHOD_RECOMPILATION_CUTOFF = 1 + (0xFFFFFFFFL & tmp);
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47 }
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48 }
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49
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50 public static void main(String[] args) throws Exception {
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51 for (TestCase test : TestCase.values()) {
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52 new IsMethodCompilableTest(test).runTest();
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53 }
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54 }
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55
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56 public IsMethodCompilableTest(TestCase testCase) {
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57 super(testCase);
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58 // to prevent inlining of #method
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59 WHITE_BOX.testSetDontInlineMethod(method, true);
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60 }
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61
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62 /**
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63 * Tests {@code WB::isMethodCompilable()} by recompilation of tested method
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64 * 'PerMethodRecompilationCutoff' times and checks compilation status. Also
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65 * checks that WB::clearMethodState() clears no-compilable flags.
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66 *
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67 * @throws Exception if one of the checks fails.
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68 */
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69 @Override
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70 protected void test() throws Exception {
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71 if (!isCompilable()) {
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72 throw new RuntimeException(method + " must be compilable");
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73 }
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74 System.out.println("PerMethodRecompilationCutoff = "
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75 + PER_METHOD_RECOMPILATION_CUTOFF);
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76 if (PER_METHOD_RECOMPILATION_CUTOFF == -1) {
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77 System.err.println(
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78 "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf");
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79 return;
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80 }
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81
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82 // deoptimize 'PerMethodRecompilationCutoff' times and clear state
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83 for (long i = 0L, n = PER_METHOD_RECOMPILATION_CUTOFF - 1; i < n; ++i) {
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84 compileAndDeoptimize();
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85 }
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86 if (!testCase.isOsr && !isCompilable()) {
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87 // in osr test case count of deopt maybe more than iterations
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88 throw new RuntimeException(method + " is not compilable after "
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89 + (PER_METHOD_RECOMPILATION_CUTOFF - 1) + " iterations");
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90 }
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91 WHITE_BOX.clearMethodState(method);
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92
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93 // deoptimize 'PerMethodRecompilationCutoff' + 1 times
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94 long i;
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95 for (i = 0L; i < PER_METHOD_RECOMPILATION_CUTOFF
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96 && isCompilable(); ++i) {
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97 compileAndDeoptimize();
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98 }
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99 if (!testCase.isOsr && i != PER_METHOD_RECOMPILATION_CUTOFF) {
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100 // in osr test case count of deopt maybe more than iterations
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101 throw new RuntimeException(method + " is not compilable after "
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102 + i + " iterations, but must only after "
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103 + PER_METHOD_RECOMPILATION_CUTOFF);
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104 }
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105 if (isCompilable()) {
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106 throw new RuntimeException(method + " is still compilable after "
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107 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");
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108 }
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109 compile();
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110 checkNotCompiled();
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111
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112 // WB.clearMethodState() must reset no-compilable flags
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113 WHITE_BOX.clearMethodState(method);
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114 if (!isCompilable()) {
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115 throw new RuntimeException(method
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116 + " is not compilable after clearMethodState()");
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117 }
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118 compile();
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119 checkCompiled();
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120 }
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121
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122 private void compileAndDeoptimize() throws Exception {
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123 compile();
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124 waitBackgroundCompilation();
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125 deoptimize();
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126 }
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127 }