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8051
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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 import sun.hotspot.WhiteBox;
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25 import sun.management.ManagementFactoryHelper;
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26 import com.sun.management.HotSpotDiagnosticMXBean;
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27
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28 import java.lang.reflect.Method;
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29
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30 /*
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31 * @author igor.ignatyev@oracle.com
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32 */
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33 public abstract class CompilerWhiteBoxTest {
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34 protected static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
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35 protected static final Method METHOD = getMethod("method");
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36 protected static final int COMPILE_THRESHOLD
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37 = Integer.parseInt(getVMOption("CompileThreshold", "10000"));
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38
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39 protected static Method getMethod(String name) {
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40 try {
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41 return CompilerWhiteBoxTest.class.getDeclaredMethod(name);
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42 } catch (NoSuchMethodException | SecurityException e) {
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43 throw new RuntimeException(
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44 "exception on getting method " + name, e);
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45 }
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46 }
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47
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48 protected static String getVMOption(String name, String defaultValue) {
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49 String result;
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50 HotSpotDiagnosticMXBean diagnostic
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51 = ManagementFactoryHelper.getDiagnosticMXBean();
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52 result = diagnostic.getVMOption(name).getValue();
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53 return result == null ? defaultValue : result;
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54 }
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55
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56 protected final void runTest() throws RuntimeException {
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57 if (ManagementFactoryHelper.getCompilationMXBean() == null) {
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58 System.err.println(
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59 "Warning: test is not applicable in interpreted mode");
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60 return;
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61 }
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62 System.out.println("at test's start:");
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63 printInfo(METHOD);
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64 try {
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65 test();
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66 } catch (Exception e) {
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67 System.out.printf("on exception '%s':", e.getMessage());
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68 printInfo(METHOD);
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69 throw new RuntimeException(e);
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70 }
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71 System.out.println("at test's end:");
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72 printInfo(METHOD);
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73 }
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74
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75 protected static void checkNotCompiled(Method method) {
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76 if (WHITE_BOX.isMethodCompiled(method)) {
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77 throw new RuntimeException(method + " must be not compiled");
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78 }
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79 if (WHITE_BOX.getMethodCompilationLevel(method) != 0) {
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80 throw new RuntimeException(method + " comp_level must be == 0");
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81 }
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82 }
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83
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84 protected static void checkCompiled(Method method)
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85 throws InterruptedException {
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86 final long start = System.currentTimeMillis();
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87 waitBackgroundCompilation(method);
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88 if (WHITE_BOX.isMethodQueuedForCompilation(method)) {
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89 System.err.printf("Warning: %s is still in queue after %dms%n",
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90 method, System.currentTimeMillis() - start);
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91 return;
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92 }
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93 if (!WHITE_BOX.isMethodCompiled(method)) {
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94 throw new RuntimeException(method + " must be compiled");
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95 }
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96 if (WHITE_BOX.getMethodCompilationLevel(method) == 0) {
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97 throw new RuntimeException(method + " comp_level must be != 0");
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98 }
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99 }
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100
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101 protected static void waitBackgroundCompilation(Method method)
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102 throws InterruptedException {
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103 final Object obj = new Object();
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104 synchronized (obj) {
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105 for (int i = 0; i < 10; ++i) {
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106 if (!WHITE_BOX.isMethodQueuedForCompilation(method)) {
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107 break;
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108 }
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109 obj.wait(1000);
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110 }
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111 }
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112 }
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113
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114 protected static void printInfo(Method method) {
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115 System.out.printf("%n%s:%n", method);
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116 System.out.printf("\tcompilable:\t%b%n",
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117 WHITE_BOX.isMethodCompilable(method));
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118 System.out.printf("\tcompiled:\t%b%n",
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119 WHITE_BOX.isMethodCompiled(method));
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120 System.out.printf("\tcomp_level:\t%d%n",
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121 WHITE_BOX.getMethodCompilationLevel(method));
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122 System.out.printf("\tin_queue:\t%b%n",
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123 WHITE_BOX.isMethodQueuedForCompilation(method));
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124 System.out.printf("compile_queues_size:\t%d%n%n",
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125 WHITE_BOX.getCompileQueuesSize());
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126 }
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127
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128 protected abstract void test() throws Exception;
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129
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130 protected final int compile() {
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131 int result = 0;
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132 for (int i = 0; i < COMPILE_THRESHOLD; ++i) {
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133 result += method();
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134 }
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135 return result;
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136 }
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137
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138
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139 protected int method() {
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140 return 42;
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141 }
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142 }
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