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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotOptions.java @ 19320:49605c649beb

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Merge.
author Doug Simon <doug.simon@oracle.com>
date Thu, 12 Feb 2015 15:20:14 +0100
parents 137773e5250c
children e7e868a42b3f
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1 /*
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2 * Copyright (c) 2011, 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 package com.oracle.graal.hotspot;
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24
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25 import static com.oracle.graal.compiler.GraalDebugConfig.*;
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26 import static com.oracle.graal.hotspot.HotSpotOptionsLoader.*;
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27 import static java.lang.Double.*;
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28
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29 import java.lang.reflect.*;
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30
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31 import com.oracle.graal.api.runtime.*;
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32 import com.oracle.graal.compiler.common.*;
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33 import com.oracle.graal.debug.*;
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34 import com.oracle.graal.options.*;
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35 import com.oracle.graal.options.OptionUtils.OptionConsumer;
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36 import com.oracle.graal.phases.common.inlining.*;
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37
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38 //JaCoCo Exclude
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39
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40 /**
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41 * Sets Graal options from the HotSpot command line. Such options are distinguished by the
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42 * {@link #GRAAL_OPTION_PREFIX} prefix.
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43 */
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44 public class HotSpotOptions {
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45
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46 private static final String GRAAL_OPTION_PREFIX = "-G:";
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47
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48 /**
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49 * Parses the Graal specific options specified to HotSpot (e.g., on the command line).
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50 *
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51 * @return true if the CITime or CITimeEach HotSpot VM options are set
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52 */
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53 private static native boolean parseVMOptions();
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54
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55 static {
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56 boolean timeCompilations = parseVMOptions();
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57 if (timeCompilations) {
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58 unconditionallyEnableTimerOrMetric(InliningUtil.class, "InlinedBytecodes");
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59 unconditionallyEnableTimerOrMetric(CompilationTask.class, "CompilationTime");
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60 }
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61 assert !Debug.Initialization.isDebugInitialized() : "The class " + Debug.class.getName() + " must not be initialized before the Graal runtime has been initialized. " +
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62 "This can be fixed by placing a call to " + Graal.class.getName() + ".runtime() on the path that triggers initialization of " + Debug.class.getName();
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63 if (areDebugScopePatternsEnabled()) {
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64 System.setProperty(Debug.Initialization.INITIALIZER_PROPERTY_NAME, "true");
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65 }
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66 }
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67
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68 /**
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69 * Ensures {@link HotSpotOptions} is initialized.
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70 */
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71 public static void initialize() {
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72 }
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73
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74 /**
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75 * Helper for the VM code called by {@link #parseVMOptions()}.
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76 *
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77 * @param name the name of a parsed option
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78 * @param option the object encapsulating the option
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79 * @param spec specification of boolean option value, type of option value or action to take
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80 */
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81 static void setOption(String name, OptionValue<?> option, char spec, String stringValue, long primitiveValue) {
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82 switch (spec) {
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83 case '+':
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84 option.setValue(Boolean.TRUE);
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85 break;
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86 case '-':
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87 option.setValue(Boolean.FALSE);
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88 break;
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89 case '?':
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90 OptionUtils.printFlags(options, GRAAL_OPTION_PREFIX);
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91 break;
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92 case ' ':
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93 OptionUtils.printNoMatchMessage(options, name, GRAAL_OPTION_PREFIX);
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95 case 'i':
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96 option.setValue((int) primitiveValue);
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97 break;
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98 case 'f':
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99 option.setValue((float) longBitsToDouble(primitiveValue));
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100 break;
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101 case 'd':
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102 option.setValue(longBitsToDouble(primitiveValue));
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103 break;
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104 case 's':
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105 option.setValue(stringValue);
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106 break;
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107 }
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108 }
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109
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110 /**
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111 * Parses a given option value specification.
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112 *
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113 * @param option the specification of an option and its value
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114 * @param setter the object to notify of the parsed option and value. If null, the
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115 * {@link OptionValue#setValue(Object)} method of the specified option is called
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116 * instead.
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117 */
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118 public static boolean parseOption(String option, OptionConsumer setter) {
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119 return OptionUtils.parseOption(options, option, GRAAL_OPTION_PREFIX, setter);
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120 }
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121
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122 /**
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123 * Sets the relevant system property such that a {@link DebugTimer} or {@link DebugMetric}
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124 * associated with a field in a class will be unconditionally enabled when it is created.
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125 * <p>
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126 * This method verifies that the named field exists and is of an expected type. However, it does
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127 * not verify that the timer or metric created has the same name of the field.
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128 *
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129 * @param c the class in which the field is declared
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130 * @param name the name of the field
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131 */
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132 private static void unconditionallyEnableTimerOrMetric(Class<?> c, String name) {
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133 try {
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134 Field field = c.getDeclaredField(name);
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135 String propertyName;
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136 if (DebugTimer.class.isAssignableFrom(field.getType())) {
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137 propertyName = Debug.ENABLE_TIMER_PROPERTY_NAME_PREFIX + name;
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138 } else {
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139 assert DebugMetric.class.isAssignableFrom(field.getType());
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140 propertyName = Debug.ENABLE_METRIC_PROPERTY_NAME_PREFIX + name;
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141 }
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142 String previous = System.setProperty(propertyName, "true");
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143 if (previous != null) {
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144 System.err.println("Overrode value \"" + previous + "\" of system property \"" + propertyName + "\" with \"true\"");
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145 }
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146 } catch (Exception e) {
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147 throw new GraalInternalError(e);
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148 }
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149 }
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150 }