1 /*
   2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.corba.se.impl.transport;
  27 
  28 import java.io.IOException;
  29 
  30 import com.sun.corba.se.pept.transport.Connection;
  31 import com.sun.corba.se.pept.transport.ReaderThread;
  32 import com.sun.corba.se.pept.transport.Selector;
  33 
  34 import com.sun.corba.se.spi.orb.ORB;
  35 import com.sun.corba.se.spi.orbutil.threadpool.Work;
  36 
  37 import com.sun.corba.se.impl.orbutil.ORBUtility;
  38 
  39 public class ReaderThreadImpl
  40     implements
  41         ReaderThread,
  42         Work
  43 {
  44     private ORB orb;
  45     private Connection connection;
  46     private Selector selector;
  47     private boolean keepRunning;
  48     private long enqueueTime;
  49 
  50     public ReaderThreadImpl(ORB orb,
  51                             Connection connection, Selector selector)
  52     {
  53         this.orb = orb;
  54         this.connection = connection;
  55         this.selector = selector;
  56         keepRunning = true;
  57     }
  58 
  59     ////////////////////////////////////////////////////
  60     //
  61     // ReaderThread methods.
  62     //
  63 
  64     public Connection getConnection()
  65     {
  66         return connection;
  67     }
  68 
  69     public void close()
  70     {
  71         if (orb.transportDebugFlag) {
  72             dprint(".close: " + connection);
  73         }
  74 
  75         keepRunning = false;
  76     }
  77 
  78     ////////////////////////////////////////////////////
  79     //
  80     // Work methods.
  81     //
  82 
  83     // REVISIT - this needs alot more from previous ReaderThread.
  84     public void doWork()
  85     {
  86         try {
  87             if (orb.transportDebugFlag) {
  88                 dprint(".doWork: Start ReaderThread: " + connection);
  89             }
  90             while (keepRunning) {
  91                 try {
  92 
  93                     if (orb.transportDebugFlag) {
  94                         dprint(".doWork: Start ReaderThread cycle: "
  95                                + connection);
  96                     }
  97 
  98                     if (connection.read()) {
  99                         // REVISIT - put in pool;
 100                         return;
 101                     }
 102 
 103                     if (orb.transportDebugFlag) {
 104                         dprint(".doWork: End ReaderThread cycle: "
 105                                + connection);
 106                     }
 107 
 108                 } catch (Throwable t) {
 109                     if (orb.transportDebugFlag) {
 110                         dprint(".doWork: exception in read: " + connection,t);
 111                     }
 112                     orb.getTransportManager().getSelector(0)
 113                         .unregisterForEvent(getConnection().getEventHandler());
 114                     getConnection().close();
 115                 }
 116             }
 117         } finally {
 118             if (orb.transportDebugFlag) {
 119                 dprint(".doWork: Terminated ReaderThread: " + connection);
 120             }
 121         }
 122     }
 123 
 124     public void setEnqueueTime(long timeInMillis)
 125     {
 126         enqueueTime = timeInMillis;
 127     }
 128 
 129     public long getEnqueueTime()
 130     {
 131         return enqueueTime;
 132     }
 133 
 134     public String getName() { return "ReaderThread"; }
 135 
 136     ////////////////////////////////////////////////////
 137     //
 138     // Implementation.
 139     //
 140 
 141     private void dprint(String msg)
 142     {
 143         ORBUtility.dprint("ReaderThreadImpl", msg);
 144     }
 145 
 146     protected void dprint(String msg, Throwable t)
 147     {
 148         dprint(msg);
 149         t.printStackTrace(System.out);
 150     }
 151 }
 152 
 153 // End of file.