| /* |
| * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package com.sun.corba.se.impl.encoding; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| import java.util.LinkedList; |
| |
| import com.sun.corba.se.impl.encoding.BufferQueue; |
| import com.sun.corba.se.impl.encoding.BufferManagerWrite; |
| import com.sun.corba.se.impl.orbutil.ORBConstants; |
| import com.sun.corba.se.impl.protocol.giopmsgheaders.Message; |
| import com.sun.corba.se.impl.encoding.ByteBufferWithInfo; |
| import com.sun.corba.se.impl.protocol.giopmsgheaders.MessageBase; |
| import com.sun.corba.se.impl.protocol.giopmsgheaders.FragmentMessage; |
| import com.sun.corba.se.spi.orb.ORB; |
| import com.sun.corba.se.impl.encoding.CDROutputObject; |
| import com.sun.corba.se.impl.orbutil.ORBUtility; |
| import com.sun.corba.se.pept.transport.Connection; |
| import com.sun.corba.se.pept.transport.ByteBufferPool; |
| import com.sun.corba.se.pept.encoding.OutputObject; |
| |
| /** |
| * Collect buffer manager. |
| */ |
| public class BufferManagerWriteCollect extends BufferManagerWrite |
| { |
| private BufferQueue queue = new BufferQueue(); |
| |
| private boolean sentFragment = false; |
| private boolean debug = false; |
| |
| |
| BufferManagerWriteCollect(ORB orb) |
| { |
| super(orb); |
| if (orb != null) |
| debug = orb.transportDebugFlag; |
| } |
| |
| public boolean sentFragment() { |
| return sentFragment; |
| } |
| |
| /** |
| * Returns the correct buffer size for this type of |
| * buffer manager as set in the ORB. |
| */ |
| public int getBufferSize() { |
| return orb.getORBData().getGIOPFragmentSize(); |
| } |
| |
| // Set the fragment's "more fragments" bit to true, put it in the |
| // queue, and allocate a new bbwi. |
| public void overflow (ByteBufferWithInfo bbwi) |
| { |
| // Set the fragment's moreFragments field to true |
| MessageBase.setFlag(bbwi.byteBuffer, Message.MORE_FRAGMENTS_BIT); |
| |
| // Enqueue the previous fragment |
| queue.enqueue(bbwi); |
| |
| // Create a new bbwi |
| ByteBufferWithInfo newBbwi = new ByteBufferWithInfo(orb, this); |
| newBbwi.fragmented = true; |
| |
| // XREVISIT - Downcast |
| ((CDROutputObject)outputObject).setByteBufferWithInfo(newBbwi); |
| |
| // Now we must marshal in the fragment header/GIOP header |
| |
| // REVISIT - we can optimize this by not creating the fragment message |
| // each time. |
| |
| // XREVISIT - Downcast |
| FragmentMessage header = |
| ((CDROutputObject)outputObject).getMessageHeader() |
| .createFragmentMessage(); |
| |
| header.write((CDROutputObject)outputObject); |
| } |
| |
| // Send all fragments |
| public void sendMessage () |
| { |
| // Enqueue the last fragment |
| queue.enqueue(((CDROutputObject)outputObject).getByteBufferWithInfo()); |
| |
| Iterator bufs = iterator(); |
| |
| Connection conn = |
| ((OutputObject)outputObject).getMessageMediator(). |
| getConnection(); |
| |
| // With the collect strategy, we must lock the connection |
| // while fragments are being sent. This is so that there are |
| // no interleved fragments in GIOP 1.1. |
| // |
| // Note that this thread must not call writeLock again in any |
| // of its send methods! |
| conn.writeLock(); |
| |
| try { |
| |
| // Get a reference to ByteBufferPool so that the ByteBufferWithInfo |
| // ByteBuffer can be released to the ByteBufferPool |
| ByteBufferPool byteBufferPool = orb.getByteBufferPool(); |
| |
| while (bufs.hasNext()) { |
| |
| ByteBufferWithInfo bbwi = (ByteBufferWithInfo)bufs.next(); |
| ((CDROutputObject)outputObject).setByteBufferWithInfo(bbwi); |
| |
| conn.sendWithoutLock(((CDROutputObject)outputObject)); |
| |
| sentFragment = true; |
| |
| // Release ByteBufferWithInfo's ByteBuffer back to the pool |
| // of ByteBuffers. |
| if (debug) |
| { |
| // print address of ByteBuffer being released |
| int bbAddress = System.identityHashCode(bbwi.byteBuffer); |
| StringBuffer sb = new StringBuffer(80); |
| sb.append("sendMessage() - releasing ByteBuffer id ("); |
| sb.append(bbAddress).append(") to ByteBufferPool."); |
| String msg = sb.toString(); |
| dprint(msg); |
| } |
| byteBufferPool.releaseByteBuffer(bbwi.byteBuffer); |
| bbwi.byteBuffer = null; |
| bbwi = null; |
| } |
| |
| sentFullMessage = true; |
| |
| } finally { |
| |
| conn.writeUnlock(); |
| } |
| } |
| |
| /** |
| * Close the BufferManagerWrite - do any outstanding cleanup. |
| * |
| * For a BufferManagerWriteGrow any queued ByteBufferWithInfo must |
| * have its ByteBuffer released to the ByteBufferPool. |
| */ |
| public void close() |
| { |
| // iterate thru queue and release any ByteBufferWithInfo's |
| // ByteBuffer that may be remaining on the queue to the |
| // ByteBufferPool. |
| |
| Iterator bufs = iterator(); |
| |
| ByteBufferPool byteBufferPool = orb.getByteBufferPool(); |
| |
| while (bufs.hasNext()) |
| { |
| ByteBufferWithInfo bbwi = (ByteBufferWithInfo)bufs.next(); |
| if (bbwi != null && bbwi.byteBuffer != null) |
| { |
| if (debug) |
| { |
| // print address of ByteBuffer being released |
| int bbAddress = System.identityHashCode(bbwi.byteBuffer); |
| StringBuffer sb = new StringBuffer(80); |
| sb.append("close() - releasing ByteBuffer id ("); |
| sb.append(bbAddress).append(") to ByteBufferPool."); |
| String msg = sb.toString(); |
| dprint(msg); |
| } |
| byteBufferPool.releaseByteBuffer(bbwi.byteBuffer); |
| bbwi.byteBuffer = null; |
| bbwi = null; |
| } |
| } |
| } |
| |
| private void dprint(String msg) |
| { |
| ORBUtility.dprint("BufferManagerWriteCollect", msg); |
| } |
| |
| private Iterator iterator () |
| { |
| return new BufferManagerWriteCollectIterator(); |
| } |
| |
| private class BufferManagerWriteCollectIterator implements Iterator |
| { |
| public boolean hasNext () |
| { |
| return queue.size() != 0; |
| } |
| |
| public Object next () |
| { |
| return queue.dequeue(); |
| } |
| |
| public void remove () |
| { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |