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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 protected static final boolean BACKGROUND_COMPILATION
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39 = Boolean.valueOf(getVMOption("BackgroundCompilation", "true"));
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40
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41 protected static Method getMethod(String name) {
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42 try {
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43 return CompilerWhiteBoxTest.class.getDeclaredMethod(name);
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44 } catch (NoSuchMethodException | SecurityException e) {
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45 throw new RuntimeException(
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46 "exception on getting method " + name, e);
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47 }
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48 }
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49
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50 protected static String getVMOption(String name) {
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51 String result;
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52 HotSpotDiagnosticMXBean diagnostic
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53 = ManagementFactoryHelper.getDiagnosticMXBean();
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54 result = diagnostic.getVMOption(name).getValue();
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55 return result;
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56 }
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57
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58 protected static String getVMOption(String name, String defaultValue) {
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59 String result = getVMOption(name);
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60 return result == null ? defaultValue : result;
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61 }
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62
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63 protected final void runTest() throws RuntimeException {
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64 if (ManagementFactoryHelper.getCompilationMXBean() == null) {
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65 System.err.println(
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66 "Warning: test is not applicable in interpreted mode");
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67 return;
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68 }
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69 System.out.println("at test's start:");
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70 printInfo(METHOD);
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71 try {
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72 test();
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73 } catch (Exception e) {
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74 System.out.printf("on exception '%s':", e.getMessage());
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75 printInfo(METHOD);
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76 e.printStackTrace();
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77 throw new RuntimeException(e);
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78 }
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79 System.out.println("at test's end:");
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80 printInfo(METHOD);
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81 }
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82
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83 protected static void checkNotCompiled(Method method) {
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84 if (WHITE_BOX.isMethodCompiled(method)) {
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85 throw new RuntimeException(method + " must be not compiled");
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86 }
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87 if (WHITE_BOX.getMethodCompilationLevel(method) != 0) {
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88 throw new RuntimeException(method + " comp_level must be == 0");
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89 }
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90 }
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91
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92 protected static void checkCompiled(Method method)
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93 throws InterruptedException {
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94 final long start = System.currentTimeMillis();
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95 waitBackgroundCompilation(method);
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96 if (WHITE_BOX.isMethodQueuedForCompilation(method)) {
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97 System.err.printf("Warning: %s is still in queue after %dms%n",
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98 method, System.currentTimeMillis() - start);
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99 return;
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100 }
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101 if (!WHITE_BOX.isMethodCompiled(method)) {
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102 throw new RuntimeException(method + " must be compiled");
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103 }
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104 if (WHITE_BOX.getMethodCompilationLevel(method) == 0) {
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105 throw new RuntimeException(method + " comp_level must be != 0");
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106 }
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107 }
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108
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109 protected static void waitBackgroundCompilation(Method method)
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110 throws InterruptedException {
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111 if (!BACKGROUND_COMPILATION) {
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112 return;
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113 }
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114 final Object obj = new Object();
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115 synchronized (obj) {
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116 for (int i = 0; i < 10; ++i) {
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117 if (!WHITE_BOX.isMethodQueuedForCompilation(method)) {
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118 break;
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119 }
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120 obj.wait(1000);
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121 }
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122 }
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123 }
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124
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125 protected static void printInfo(Method method) {
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126 System.out.printf("%n%s:%n", method);
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127 System.out.printf("\tcompilable:\t%b%n",
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128 WHITE_BOX.isMethodCompilable(method));
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129 System.out.printf("\tcompiled:\t%b%n",
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130 WHITE_BOX.isMethodCompiled(method));
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131 System.out.printf("\tcomp_level:\t%d%n",
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132 WHITE_BOX.getMethodCompilationLevel(method));
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133 System.out.printf("\tin_queue:\t%b%n",
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134 WHITE_BOX.isMethodQueuedForCompilation(method));
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135 System.out.printf("compile_queues_size:\t%d%n%n",
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136 WHITE_BOX.getCompileQueuesSize());
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137 }
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138
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139 protected abstract void test() throws Exception;
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140
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141 protected final int compile() {
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142 int result = 0;
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143 int count = Math.max(COMPILE_THRESHOLD, 150000);
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144 for (int i = 0; i < count; ++i) {
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145 result += method();
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146 }
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147 System.out.println("method was invoked " + count + " times");
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148 return result;
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149 }
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150
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151 protected int method() {
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152 return 42;
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153 }
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154 }
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