Mercurial Hosting > luan
annotate src/org/eclipse/jetty/io/AbstractBuffers.java @ 986:4f2d04c72781
remove RandomAccessFileBuffer
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Mon, 17 Oct 2016 04:44:53 -0600 |
parents | 3428c60d7cfc |
children | 58a9c4a42292 |
rev | line source |
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1 // |
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2 // ======================================================================== |
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
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4 // ------------------------------------------------------------------------ |
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5 // All rights reserved. This program and the accompanying materials |
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6 // are made available under the terms of the Eclipse Public License v1.0 |
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7 // and Apache License v2.0 which accompanies this distribution. |
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8 // |
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9 // The Eclipse Public License is available at |
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10 // http://www.eclipse.org/legal/epl-v10.html |
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11 // |
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12 // The Apache License v2.0 is available at |
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13 // http://www.opensource.org/licenses/apache2.0.php |
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14 // |
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15 // You may elect to redistribute this code under either of these licenses. |
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16 // ======================================================================== |
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17 // |
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18 |
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19 package org.eclipse.jetty.io; |
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20 |
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21 import org.eclipse.jetty.io.nio.DirectNIOBuffer; |
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22 import org.eclipse.jetty.io.nio.IndirectNIOBuffer; |
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23 |
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24 public abstract class AbstractBuffers implements Buffers |
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25 { |
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26 protected final Buffers.Type _headerType; |
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27 protected final int _headerSize; |
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28 protected final Buffers.Type _bufferType; |
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29 protected final int _bufferSize; |
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30 protected final Buffers.Type _otherType; |
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31 |
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32 /* ------------------------------------------------------------ */ |
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33 public AbstractBuffers(Buffers.Type headerType, int headerSize, Buffers.Type bufferType, int bufferSize, Buffers.Type otherType) |
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34 { |
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35 _headerType=headerType; |
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36 _headerSize=headerSize; |
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37 _bufferType=bufferType; |
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38 _bufferSize=bufferSize; |
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39 _otherType=otherType; |
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40 } |
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41 |
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42 /* ------------------------------------------------------------ */ |
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43 /** |
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44 * @return Returns the buffer size in bytes. |
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45 */ |
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46 public int getBufferSize() |
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47 { |
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48 return _bufferSize; |
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49 } |
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50 |
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51 /* ------------------------------------------------------------ */ |
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52 /** |
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53 * @return Returns the header size in bytes. |
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54 */ |
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55 public int getHeaderSize() |
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56 { |
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57 return _headerSize; |
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58 } |
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59 |
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60 |
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61 /* ------------------------------------------------------------ */ |
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62 /** |
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63 * Create a new header Buffer |
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64 * @return new Buffer |
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65 */ |
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66 final protected Buffer newHeader() |
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67 { |
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68 switch(_headerType) |
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69 { |
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70 case BYTE_ARRAY: |
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71 return new ByteArrayBuffer(_headerSize); |
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72 case DIRECT: |
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73 return new DirectNIOBuffer(_headerSize); |
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74 case INDIRECT: |
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75 return new IndirectNIOBuffer(_headerSize); |
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76 } |
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77 throw new IllegalStateException(); |
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78 } |
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79 |
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80 /* ------------------------------------------------------------ */ |
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81 /** |
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82 * Create a new content Buffer |
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83 * @return new Buffer |
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84 */ |
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85 final protected Buffer newBuffer() |
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86 { |
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87 switch(_bufferType) |
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88 { |
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89 case BYTE_ARRAY: |
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90 return new ByteArrayBuffer(_bufferSize); |
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91 case DIRECT: |
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92 return new DirectNIOBuffer(_bufferSize); |
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93 case INDIRECT: |
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94 return new IndirectNIOBuffer(_bufferSize); |
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95 } |
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96 throw new IllegalStateException(); |
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97 } |
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98 |
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99 /* ------------------------------------------------------------ */ |
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100 /** |
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101 * Create a new content Buffer |
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102 * @param size |
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103 * @return new Buffer |
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104 */ |
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105 final protected Buffer newBuffer(int size) |
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106 { |
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107 switch(_otherType) |
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108 { |
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109 case BYTE_ARRAY: |
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110 return new ByteArrayBuffer(size); |
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111 case DIRECT: |
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112 return new DirectNIOBuffer(size); |
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113 case INDIRECT: |
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114 return new IndirectNIOBuffer(size); |
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115 } |
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116 throw new IllegalStateException(); |
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117 } |
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118 |
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119 /* ------------------------------------------------------------ */ |
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120 /** |
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121 * @param buffer |
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122 * @return True if the buffer is the correct type to be a Header buffer |
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123 */ |
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124 public final boolean isHeader(Buffer buffer) |
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125 { |
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126 if (buffer.capacity()==_headerSize) |
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127 { |
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128 switch(_headerType) |
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129 { |
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130 case BYTE_ARRAY: |
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131 return buffer instanceof ByteArrayBuffer && !(buffer instanceof IndirectNIOBuffer); |
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132 case DIRECT: |
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133 return buffer instanceof DirectNIOBuffer; |
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134 case INDIRECT: |
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135 return buffer instanceof IndirectNIOBuffer; |
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136 } |
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137 } |
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138 return false; |
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139 } |
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140 |
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141 /* ------------------------------------------------------------ */ |
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142 /** |
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143 * @param buffer |
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144 * @return True if the buffer is the correct type to be a Header buffer |
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145 */ |
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146 public final boolean isBuffer(Buffer buffer) |
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147 { |
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148 if (buffer.capacity()==_bufferSize) |
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149 { |
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150 switch(_bufferType) |
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151 { |
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152 case BYTE_ARRAY: |
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153 return buffer instanceof ByteArrayBuffer && !(buffer instanceof IndirectNIOBuffer); |
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154 case DIRECT: |
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155 return buffer instanceof DirectNIOBuffer; |
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156 case INDIRECT: |
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157 return buffer instanceof IndirectNIOBuffer; |
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158 } |
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159 } |
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160 return false; |
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161 } |
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162 |
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163 /* ------------------------------------------------------------ */ |
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164 public String toString() |
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165 { |
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166 return String.format("%s [%d,%d]", getClass().getSimpleName(), _headerSize, _bufferSize); |
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167 } |
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168 } |