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1 /* |
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2 * Copyright 2002-2006 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. Sun designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Sun in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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22 * CA 95054 USA or visit www.sun.com if you need additional information or |
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23 * have any questions. |
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24 */ |
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25 |
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26 /* |
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27 */ |
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28 |
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29 package sun.nio.ch; |
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30 |
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31 import java.io.IOException; |
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32 import java.io.FileDescriptor; |
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33 import java.nio.ByteBuffer; |
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34 import java.nio.channels.*; |
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35 import java.nio.channels.spi.*; |
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36 |
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37 |
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38 /** |
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39 * Pipe.SinkChannel implementation based on socket connection. |
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40 */ |
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41 |
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42 class SinkChannelImpl |
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43 extends Pipe.SinkChannel |
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44 implements SelChImpl |
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45 { |
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46 // The SocketChannel assoicated with this pipe |
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47 SocketChannel sc; |
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48 |
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49 public FileDescriptor getFD() { |
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50 return ((SocketChannelImpl)sc).getFD(); |
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51 } |
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52 |
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53 public int getFDVal() { |
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54 return ((SocketChannelImpl)sc).getFDVal(); |
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55 } |
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56 |
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57 SinkChannelImpl(SelectorProvider sp, SocketChannel sc) { |
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58 super(sp); |
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59 this.sc = sc; |
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60 } |
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61 |
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62 protected void implCloseSelectableChannel() throws IOException { |
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63 if (!isRegistered()) |
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64 kill(); |
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65 } |
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66 |
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67 public void kill() throws IOException { |
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68 sc.close(); |
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69 } |
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70 |
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71 protected void implConfigureBlocking(boolean block) throws IOException { |
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72 sc.configureBlocking(block); |
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73 } |
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74 |
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75 public boolean translateReadyOps(int ops, int initialOps, |
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76 SelectionKeyImpl sk) { |
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77 int intOps = sk.nioInterestOps(); // Do this just once, it synchronizes |
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78 int oldOps = sk.nioReadyOps(); |
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79 int newOps = initialOps; |
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80 |
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81 if ((ops & PollArrayWrapper.POLLNVAL) != 0) |
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82 throw new Error("POLLNVAL detected"); |
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83 |
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84 if ((ops & (PollArrayWrapper.POLLERR |
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85 | PollArrayWrapper.POLLHUP)) != 0) { |
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86 newOps = intOps; |
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87 sk.nioReadyOps(newOps); |
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88 return (newOps & ~oldOps) != 0; |
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89 } |
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90 |
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91 if (((ops & PollArrayWrapper.POLLOUT) != 0) && |
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92 ((intOps & SelectionKey.OP_WRITE) != 0)) |
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93 newOps |= SelectionKey.OP_WRITE; |
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94 |
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95 sk.nioReadyOps(newOps); |
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96 return (newOps & ~oldOps) != 0; |
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97 } |
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98 |
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99 public boolean translateAndUpdateReadyOps(int ops, SelectionKeyImpl sk) { |
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100 return translateReadyOps(ops, sk.nioReadyOps(), sk); |
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101 } |
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102 |
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103 public boolean translateAndSetReadyOps(int ops, SelectionKeyImpl sk) { |
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104 return translateReadyOps(ops, 0, sk); |
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105 } |
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106 |
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107 public void translateAndSetInterestOps(int ops, SelectionKeyImpl sk) { |
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108 if ((ops & SelectionKey.OP_WRITE) != 0) |
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109 ops = PollArrayWrapper.POLLOUT; |
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110 sk.selector.putEventOps(sk, ops); |
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111 } |
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112 |
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113 public int write(ByteBuffer src) throws IOException { |
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114 try { |
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115 return sc.write(src); |
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116 } catch (AsynchronousCloseException x) { |
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117 close(); |
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118 throw x; |
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119 } |
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120 } |
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121 |
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122 public long write(ByteBuffer[] srcs) throws IOException { |
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123 try { |
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124 return sc.write(srcs); |
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125 } catch (AsynchronousCloseException x) { |
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126 close(); |
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127 throw x; |
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128 } |
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129 } |
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130 |
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131 public long write(ByteBuffer[] srcs, int offset, int length) |
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132 throws IOException |
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133 { |
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134 if ((offset < 0) || (length < 0) || (offset > srcs.length - length)) |
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135 throw new IndexOutOfBoundsException(); |
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136 try { |
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137 return write(Util.subsequence(srcs, offset, length)); |
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138 } catch (AsynchronousCloseException x) { |
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139 close(); |
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140 throw x; |
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141 } |
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142 } |
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143 } |