0
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1 /*
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2 * Copyright 2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.runtime;
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26
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27 import java.util.*;
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28 import sun.jvm.hotspot.debugger.*;
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29 import sun.jvm.hotspot.oops.*;
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30 import sun.jvm.hotspot.types.*;
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31 import sun.jvm.hotspot.utilities.*;
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32
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33 public class PerfDataEntry extends VMObject {
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34 private static JIntField entryLengthField;
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35 private static JIntField nameOffsetField;
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36 private static JIntField vectorLengthField;
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37 private static JByteField dataTypeField;
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38 private static JByteField flagsField;
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39 private static JByteField dataUnitsField;
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40 private static JByteField dataVariabilityField;
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41 private static JIntField dataOffsetField;
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42
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43 static {
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44 VM.registerVMInitializedObserver(new Observer() {
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45 public void update(Observable o, Object data) {
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46 initialize(VM.getVM().getTypeDataBase());
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47 }
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48 });
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49 }
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50
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51 private static synchronized void initialize(TypeDataBase db) {
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52 Type type = db.lookupType("PerfDataEntry");
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53 entryLengthField = type.getJIntField("entry_length");
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54 nameOffsetField = type.getJIntField("name_offset");
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55 vectorLengthField = type.getJIntField("vector_length");
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56 dataTypeField = type.getJByteField("data_type");
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57 flagsField = type.getJByteField("flags");
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58 dataUnitsField = type.getJByteField("data_units");
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59 dataVariabilityField = type.getJByteField("data_variability");
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60 dataOffsetField = type.getJIntField("data_offset");
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61 }
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62
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63 public PerfDataEntry(Address addr) {
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64 super(addr);
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65 }
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66
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67 // Accessors
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68
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69 public int entryLength() {
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70 return (int) entryLengthField.getValue(addr);
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71 }
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72
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73 public int nameOffset() {
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74 return (int) nameOffsetField.getValue(addr);
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75 }
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76
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77 public int vectorLength() {
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78 return (int) vectorLengthField.getValue(addr);
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79 }
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80
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81 // returns one of the constants in BasicType class
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82 public int dataType() {
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83 char ch = (char) (byte) dataTypeField.getValue(addr);
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84 return BasicType.charToType(ch);
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85 }
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86
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87 public byte flags() {
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88 return (byte) flagsField.getValue(addr);
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89 }
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90
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91 public boolean supported() {
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92 return (flags() & 0x1) != 0;
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93 }
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94
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95 // NOTE: Keep this in sync with PerfData::Units enum in VM code
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96 public interface PerfDataUnits {
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97 public static final int U_None = 1;
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98 public static final int U_Bytes = 2;
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99 public static final int U_Ticks = 3;
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100 public static final int U_Events = 4;
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101 public static final int U_String = 5;
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102 public static final int U_Hertz = 6;
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103 }
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104
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105 // returns one of the constants in PerfDataUnits
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106 public int dataUnits() {
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107 return (int) dataUnitsField.getValue(addr);
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108 }
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109
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110 // NOTE: Keep this in sync with PerfData::Variability enum in VM code
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111 public interface PerfDataVariability {
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112 public static final int V_Constant = 1;
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113 public static final int V_Monotonic = 2;
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114 public static final int V_Variable = 3;
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115 }
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116
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117 // returns one of the constants in PerfDataVariability
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118 public int dataVariability() {
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119 return (int) dataVariabilityField.getValue(addr);
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120 }
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121
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122 public int dataOffset() {
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123 return (int) dataOffsetField.getValue(addr);
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124 }
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125
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126 public String name() {
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127 int off = nameOffset();
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128 return CStringUtilities.getString(addr.addOffsetTo(off));
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129 }
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130
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131 public boolean booleanValue() {
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132 if (Assert.ASSERTS_ENABLED) {
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133 Assert.that(vectorLength() == 0 &&
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134 dataType() == BasicType.tBoolean, "not a boolean");
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135 }
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136 return addr.getJBooleanAt(dataOffset());
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137 }
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138
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139 public char charValue() {
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140 if (Assert.ASSERTS_ENABLED) {
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141 Assert.that(vectorLength() == 0 &&
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142 dataType() == BasicType.tChar, "not a char");
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143 }
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144 return addr.getJCharAt(dataOffset());
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145 }
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146
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147 public byte byteValue() {
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148 if (Assert.ASSERTS_ENABLED) {
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149 Assert.that(vectorLength() == 0 &&
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150 dataType() == BasicType.tByte, "not a byte");
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151 }
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152 return addr.getJByteAt(dataOffset());
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153
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154 }
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155
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156 public short shortValue() {
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157 if (Assert.ASSERTS_ENABLED) {
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158 Assert.that(vectorLength() == 0 &&
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159 dataType() == BasicType.tShort, "not a short");
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160 }
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161 return addr.getJShortAt(dataOffset());
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162 }
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163
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164 public int intValue() {
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165 if (Assert.ASSERTS_ENABLED) {
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166 Assert.that(vectorLength() == 0 &&
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167 dataType() == BasicType.tInt, "not an int");
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168 }
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169 return addr.getJIntAt(dataOffset());
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170 }
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171
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172 public long longValue() {
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173 if (Assert.ASSERTS_ENABLED) {
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174 Assert.that(vectorLength() == 0 &&
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175 dataType() == BasicType.tLong, "not a long");
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176 }
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177 return addr.getJLongAt(dataOffset());
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178 }
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179
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180 public float floatValue() {
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181 if (Assert.ASSERTS_ENABLED) {
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182 Assert.that(vectorLength() == 0 &&
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183 dataType() == BasicType.tFloat, "not a float");
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184 }
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185 return addr.getJFloatAt(dataOffset());
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186 }
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187
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188 public double doubleValue() {
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189 if (Assert.ASSERTS_ENABLED) {
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190 Assert.that(vectorLength() == 0 &&
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191 dataType() == BasicType.tDouble, "not a double");
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192 }
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193 return addr.getJDoubleAt(dataOffset());
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194 }
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195
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196 public boolean[] booleanArrayValue() {
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197 int len = vectorLength();
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198 if (Assert.ASSERTS_ENABLED) {
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199 Assert.that(len > 0 &&
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200 dataType() == BasicType.tBoolean, "not a boolean vector");
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201 }
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202 boolean[] res = new boolean[len];
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203 final int off = dataOffset();
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204 final long size = getHeap().getBooleanSize();
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205 for (int i = 0; i < len; i++) {
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206 res[i] = addr.getJBooleanAt(off + i * size);
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207 }
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208 return res;
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209 }
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210
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211 public char[] charArrayValue() {
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212 int len = vectorLength();
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213 if (Assert.ASSERTS_ENABLED) {
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214 Assert.that(len > 0 &&
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215 dataType() == BasicType.tChar, "not a char vector");
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216 }
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217 char[] res = new char[len];
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218 final int off = dataOffset();
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219 final long size = getHeap().getCharSize();
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220 for (int i = 0; i < len; i++) {
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221 res[i] = addr.getJCharAt(off + i * size);
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222 }
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223 return res;
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224 }
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225
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226 public byte[] byteArrayValue() {
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227 int len = vectorLength();
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228 if (Assert.ASSERTS_ENABLED) {
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229 Assert.that(len > 0 &&
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230 dataType() == BasicType.tByte, "not a byte vector");
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231 }
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232 byte[] res = new byte[len];
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233 final int off = dataOffset();
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234 final long size = getHeap().getByteSize();
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235 for (int i = 0; i < len; i++) {
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236 res[i] = addr.getJByteAt(off + i * size);
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237 }
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238 return res;
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239 }
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240
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241 public short[] shortArrayValue() {
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242 int len = vectorLength();
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243 if (Assert.ASSERTS_ENABLED) {
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244 Assert.that(len > 0 &&
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245 dataType() == BasicType.tShort, "not a short vector");
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246 }
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247 short[] res = new short[len];
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248 final int off = dataOffset();
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249 final long size = getHeap().getShortSize();
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250 for (int i = 0; i < len; i++) {
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251 res[i] = addr.getJShortAt(off + i * size);
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252 }
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253 return res;
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254 }
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255
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256 public int[] intArrayValue() {
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257 int len = vectorLength();
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258 if (Assert.ASSERTS_ENABLED) {
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259 Assert.that(len > 0 &&
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260 dataType() == BasicType.tInt, "not an int vector");
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261 }
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262 int[] res = new int[len];
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263 final int off = dataOffset();
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264 final long size = getHeap().getIntSize();
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265 for (int i = 0; i < len; i++) {
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266 res[i] = addr.getJIntAt(off + i * size);
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267 }
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268 return res;
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269 }
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270
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271 public long[] longArrayValue() {
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272 int len = vectorLength();
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273 if (Assert.ASSERTS_ENABLED) {
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274 Assert.that(len > 0 &&
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275 dataType() == BasicType.tLong, "not a long vector");
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276 }
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277 long[] res = new long[len];
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278 final int off = dataOffset();
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279 final long size = getHeap().getLongSize();
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280 for (int i = 0; i < len; i++) {
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281 res[i] = addr.getJLongAt(off + i * size);
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282 }
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283 return res;
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284 }
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285
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286 public float[] floatArrayValue() {
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287 int len = vectorLength();
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288 if (Assert.ASSERTS_ENABLED) {
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289 Assert.that(len > 0 &&
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290 dataType() == BasicType.tFloat, "not a float vector");
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291 }
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292 float[] res = new float[len];
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293 final int off = dataOffset();
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294 final long size = getHeap().getFloatSize();
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295 for (int i = 0; i < len; i++) {
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296 res[i] = addr.getJFloatAt(off + i * size);
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297 }
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298 return res;
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299 }
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300
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301 public double[] doubleArrayValue() {
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302 int len = vectorLength();
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303 if (Assert.ASSERTS_ENABLED) {
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304 Assert.that(len > 0 &&
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305 dataType() == BasicType.tDouble, "not a double vector");
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306 }
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307 double[] res = new double[len];
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308 final int off = dataOffset();
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309 final long size = getHeap().getDoubleSize();
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310 for (int i = 0; i < len; i++) {
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311 res[i] = addr.getJDoubleAt(off + i * size);
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312 }
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313 return res;
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314 }
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315
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316 // value as String
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317 public String valueAsString() {
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318 int dataType = dataType();
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319 int len = vectorLength();
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320 String str = null;
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321 if (len == 0) { // scalar
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322 switch (dataType) {
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323 case BasicType.tBoolean:
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324 str = Boolean.toString(booleanValue());
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325 break;
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326 case BasicType.tChar:
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327 str = "'" + Character.toString(charValue()) + "'";
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328 break;
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329 case BasicType.tByte:
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330 str = Byte.toString(byteValue());
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331 break;
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332 case BasicType.tShort:
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333 str = Short.toString(shortValue());
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334 break;
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335 case BasicType.tInt:
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336 str = Integer.toString(intValue());
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337 break;
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338 case BasicType.tLong:
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339 str = Long.toString(longValue());
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340 break;
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341 case BasicType.tFloat:
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342 str = Float.toString(floatValue());
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343 break;
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344 case BasicType.tDouble:
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345 str = Double.toString(doubleValue());
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346 break;
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347 default:
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348 str = "<unknown scalar value>";
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349 break;
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350 }
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351 } else { // vector
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352 switch (dataType) {
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353 case BasicType.tBoolean: {
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354 boolean[] res = booleanArrayValue();
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355 StringBuffer buf = new StringBuffer();
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356 buf.append('[');
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357 for (int i = 0; i < res.length; i++) {
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358 buf.append(Boolean.toString(res[i]));
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359 buf.append(", ");
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360 }
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361 buf.append(']');
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362 str = buf.toString();
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363 break;
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364 }
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365
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366 case BasicType.tChar: {
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367 // char[] is returned as a String
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368 str = new String(charArrayValue());
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369 break;
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370 }
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371
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372 case BasicType.tByte: {
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373 // byte[] is returned as a String
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374 try {
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375 str = new String(byteArrayValue(), "US-ASCII");
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376 } catch (java.io.UnsupportedEncodingException e) {
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377 str = "can't decode string : " + e.getMessage();
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378 }
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379 break;
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380 }
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381
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382 case BasicType.tShort: {
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383 short[] res = shortArrayValue();
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384 StringBuffer buf = new StringBuffer();
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385 buf.append('[');
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386 for (int i = 0; i < res.length; i++) {
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387 buf.append(Short.toString(res[i]));
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388 buf.append(", ");
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389 }
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390 buf.append(']');
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391 str = buf.toString();
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392 break;
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393 }
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394
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395 case BasicType.tInt: {
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396 int[] res = intArrayValue();
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397 StringBuffer buf = new StringBuffer();
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398 buf.append('[');
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399 for (int i = 0; i < res.length; i++) {
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400 buf.append(Integer.toString(res[i]));
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401 buf.append(", ");
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402 }
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403 buf.append(']');
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404 str = buf.toString();
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405 break;
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406 }
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407
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408 case BasicType.tLong: {
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409 long[] res = longArrayValue();
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410 StringBuffer buf = new StringBuffer();
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411 buf.append('[');
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412 for (int i = 0; i < res.length; i++) {
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413 buf.append(Long.toString(res[i]));
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414 buf.append(", ");
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415 }
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416 buf.append(']');
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417 str = buf.toString();
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418 break;
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419 }
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420
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421 case BasicType.tFloat: {
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422 float[] res = floatArrayValue();
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423 StringBuffer buf = new StringBuffer();
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424 buf.append('[');
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425 for (int i = 0; i < res.length; i++) {
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426 buf.append(Float.toString(res[i]));
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427 buf.append(", ");
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428 }
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429 buf.append(']');
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430 str = buf.toString();
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431 break;
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432 }
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433
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434 case BasicType.tDouble: {
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435 double[] res = doubleArrayValue();
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436 StringBuffer buf = new StringBuffer();
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437 buf.append('[');
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438 for (int i = 0; i < res.length; i++) {
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439 buf.append(Double.toString(res[i]));
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440 buf.append(", ");
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441 }
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442 buf.append(']');
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443 str = buf.toString();
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444 break;
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445 }
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446
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447 default:
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448 str = "<unknown vector value>";
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449 break;
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450 }
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451 }
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452
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453 // add units
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454 switch (dataUnits()) {
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455 case PerfDataUnits.U_None:
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456 break;
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457 case PerfDataUnits.U_Bytes:
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458 str += " byte(s)";
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459 break;
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460 case PerfDataUnits.U_Ticks:
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461 str += " tick(s)";
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462 break;
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463 case PerfDataUnits.U_Events:
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464 str += " event(s)";
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465 break;
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466 case PerfDataUnits.U_String:
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467 break;
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468 case PerfDataUnits.U_Hertz:
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469 str += " Hz";
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470 break;
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471 }
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472
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473 return str;
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474 }
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475
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476 // -- Internals only below this point
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477 private ObjectHeap getHeap() {
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478 return VM.getVM().getObjectHeap();
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479 }
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480 }
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