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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/logging/Logger.java @ 1482:2bae90a3deb9

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Added package information files.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Mon, 29 Nov 2010 12:02:16 +0100
parents 9e5e83ca2259
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved.
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3 *
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
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5 * that is described in this document. In particular, and without limitation, these intellectual property
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6 * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
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7 * more additional patents or pending patent applications in the U.S. and in other countries.
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8 *
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun
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10 * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
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11 * supplements.
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12 *
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13 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
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14 * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
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15 * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
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16 * U.S. and other countries.
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17 *
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18 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
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19 * Company, Ltd.
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20 */
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21 package com.sun.hotspot.c1x.logging;
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22
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23 import java.io.*;
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24 import java.lang.reflect.*;
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25 import java.util.*;
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26
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27 /**
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28 * Scoped logging class used to display the call hierarchy of VMEntries/VMExits calls.
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29 *
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30 * @author Lukas Stadler
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31 */
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32 public class Logger {
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33
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34 public static final boolean ENABLED = Boolean.valueOf(System.getProperty("c1x.debug"));
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35 private static final int SPACING = 4;
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36 private static Deque<Boolean> openStack = new LinkedList<Boolean>();
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37 private static boolean open = false;
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38 private static int level = 0;
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39
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40 private static final PrintStream out;
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41
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42 static {
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43 PrintStream ps = null;
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44 String filename = System.getProperty("c1x.info_file");
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45 if (filename != null && !"".equals(filename)) {
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46 try {
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47 ps = new PrintStream(new FileOutputStream(filename));
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48 } catch (FileNotFoundException e) {
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49 e.printStackTrace();
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50 ps = null;
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51 }
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52 }
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53 out = ps;
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54 if (out != null) {
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55 out.println("start: " + new Date());
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56 }
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57 }
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58
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59 public static void info(String message) {
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60 if (ENABLED) {
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61 log(message);
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62 } else {
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63 System.out.println(message);
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64 }
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65 if (out != null) {
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66 out.println(message);
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67 out.flush();
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68 }
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69 }
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70
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71 public static void log(String message) {
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72 if (ENABLED) {
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73 for (String line : message.split("\n")) {
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74 if (open) {
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75 System.out.println("...");
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76 open = false;
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77 }
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78 System.out.print(space(level));
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79 System.out.println(line);
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80 }
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81 }
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82 }
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83
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84 public static void startScope(String message) {
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85 if (ENABLED) {
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86 if (open) {
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87 System.out.println("...");
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88 open = false;
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89 }
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90 System.out.print(space(level));
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91 System.out.print(message);
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92 openStack.push(open);
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93 open = true;
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94 level++;
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95 }
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96 }
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97
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98 public static void endScope(String message) {
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99 if (ENABLED) {
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100 level--;
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101 if (open) {
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102 System.out.println(message);
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103 } else {
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104 System.out.println(space(level) + "..." + message);
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105 }
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106 open = openStack.pop();
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107 }
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108 }
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109
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110 private static String[] spaces = new String[50];
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111
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112 private static String space(int count) {
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113 assert count >= 0;
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114 String result;
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115 if (count >= spaces.length || spaces[count] == null) {
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116 StringBuilder str = new StringBuilder();
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117 for (int i = 0; i < count * SPACING; i++) {
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118 str.append(' ');
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119 }
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120 result = str.toString();
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121 if (count < spaces.length) {
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122 spaces[count] = result;
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123 }
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124 } else {
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125 result = spaces[count];
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126 }
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127 return result;
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128 }
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129
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130 public static String pretty(Object value) {
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131 if (value == null) {
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132 return "null";
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133 }
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134
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135 Class<?> klass = value.getClass();
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136 if (value instanceof Void) {
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137 return "void";
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138 } else if (value instanceof String) {
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139 return "\"" + value + "\"";
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140 } else if (value instanceof Method) {
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141 return "method \"" + ((Method) value).getName() + "\"";
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142 } else if (value instanceof Class<?>) {
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143 return "class \"" + ((Class<?>) value).getSimpleName() + "\"";
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144 } else if (value instanceof Integer) {
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145 if ((Integer) value < 10) {
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146 return value.toString();
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147 }
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148 return value + " (0x" + Integer.toHexString((Integer) value) + ")";
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149 } else if (value instanceof Long) {
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150 if ((Long) value < 10) {
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151 return value + "l";
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152 }
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153 return value + "l (0x" + Long.toHexString((Long) value) + "l)";
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154 } else if (klass.isArray()) {
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155 StringBuilder str = new StringBuilder();
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156 int dimensions = 0;
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157 while (klass.isArray()) {
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158 dimensions++;
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159 klass = klass.getComponentType();
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160 }
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161 str.append(klass.getSimpleName()).append('[').append(Array.getLength(value)).append(']');
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162 for (int i = 1; i < dimensions; i++) {
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163 str.append("[]");
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164 }
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165 return str.toString();
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166 }
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167
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168 return value.toString();
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169 }
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170 }