Initial revision

From-SVN: r102074

libjava/classpath/gnu/java/nio/PipeImpl.java

@@ -0,0 +1,184 @@
+/* PipeImpl.java -- 
+   Copyright (C) 2002, 2003, 2004, 2005  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.java.nio;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.Pipe;
+import java.nio.channels.spi.SelectorProvider;
+
+class PipeImpl extends Pipe
+{
+  public static final class SourceChannelImpl extends Pipe.SourceChannel
+  {
+    private int native_fd;
+    
+    public SourceChannelImpl (SelectorProvider selectorProvider,
+                              int native_fd)
+    {
+      super (selectorProvider);
+      this.native_fd = native_fd;
+    }
+
+    protected final void implCloseSelectableChannel()
+      throws IOException
+    {
+      throw new Error ("Not implemented");
+    }
+
+    protected void implConfigureBlocking (boolean blocking)
+      throws IOException
+    {
+      throw new Error ("Not implemented");
+    }
+
+    public final int read (ByteBuffer src)
+      throws IOException
+    {
+      throw new Error ("Not implemented");
+    }
+
+    public final long read (ByteBuffer[] srcs)
+      throws IOException
+    {
+      return read (srcs, 0, srcs.length);
+    }
+
+    public final synchronized long read (ByteBuffer[] srcs, int offset,
+					 int len)
+      throws IOException
+    {
+      if (offset < 0
+	  || offset > srcs.length
+	  || len < 0
+	  || len > srcs.length - offset)
+	throw new IndexOutOfBoundsException();
+
+      long bytesRead = 0;
+      
+      for (int index = 0; index < len; index++)
+	bytesRead += read (srcs [offset + index]);
+
+      return bytesRead;
+
+    }
+
+    public final int getNativeFD()
+    {
+      return native_fd;
+    }
+  }
+
+  public static final class SinkChannelImpl extends Pipe.SinkChannel
+  {
+    private int native_fd;
+    
+    public SinkChannelImpl (SelectorProvider selectorProvider,
+                            int native_fd)
+    {
+      super (selectorProvider);
+      this.native_fd = native_fd;
+    }
+
+    protected final void implCloseSelectableChannel()
+      throws IOException
+    {
+      throw new Error ("Not implemented");
+    }
+
+    protected final void implConfigureBlocking (boolean blocking)
+      throws IOException
+    {
+      throw new Error ("Not implemented");
+    }
+
+    public final int write (ByteBuffer dst)
+      throws IOException
+    {
+      throw new Error ("Not implemented");
+    }
+
+    public final long write (ByteBuffer[] srcs)
+      throws IOException
+    {
+      return write (srcs, 0, srcs.length);
+    }
+
+    public final synchronized long write (ByteBuffer[] srcs, int offset, int len)
+      throws IOException
+    {
+      if (offset < 0
+	  || offset > srcs.length
+	  || len < 0
+	  || len > srcs.length - offset)
+	throw new IndexOutOfBoundsException();
+
+      long bytesWritten = 0;
+      
+      for (int index = 0; index < len; index++)
+	bytesWritten += write (srcs [offset + index]);
+
+      return bytesWritten;
+    }
+
+    public final int getNativeFD()
+    {
+      return native_fd;
+    }
+  }
+
+  private SinkChannelImpl sink;
+  private SourceChannelImpl source;
+  
+  public PipeImpl (SelectorProvider provider)
+    throws IOException
+  {
+    super();
+    VMPipe.init (this, provider);
+  }
+
+  public Pipe.SinkChannel sink()
+  {
+    return sink;
+  }
+
+  public Pipe.SourceChannel source()
+  {
+    return source;
+  }
+}