2003-03-02 Michael Koch <konqueror@gmx.de>

* gnu/java/nio/FileChannelImpl.java
	(fd): Type FileDescriptor instead of int.
	(lengthInternal): Removed.
	(FileChannelImpl): Fixed arguments, check type of file object.
	(size): Made it native.
	(implPosition): New native method.
	(implTruncate): New native method.
	(position): Implemented.
	(truncate): Implemented.
	(nio_mmap_file): Changed arguments.
	(nio_munmap_file): Changed arguments.
	(nio_msync): Changed arguments.
	* gnu/java/nio/natFileChannelImpl.cc
	(lengthInternal): Removed.
	(size): New method.
	(implPosition): New method.
	(implTruncate): New method.
	(nio_mmap_file): Changed arguments.
	(nio_munmap_file): Changed arguments.
	(nio_msync): Changed arguments.

From-SVN: r63668

libjava/gnu/java/nio/FileChannelImpl.java

@@ -38,6 +38,7 @@ exception statement from your version. */
 package gnu.java.nio;
 
 import java.io.EOFException;
+import java.io.FileDescriptor;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -64,41 +65,41 @@ public class FileChannelImpl extends FileChannel
 {
   public long address;
   public int length;
-  public int fd;
+  public FileDescriptor fd;
   public MappedByteBuffer buf;
   public Object file_obj; // just to keep it live...
 
-  /**
-   * This method came from java.io.RandomAccessFile
-   * It is private there so we will repeat it here.
-   */
-  private native long lengthInternal (int native_fd) throws IOException;
-
-  public FileChannelImpl (int fd, Object obj)
+  public FileChannelImpl (FileDescriptor fd, boolean write, Object obj)
   {
+    if (!(obj instanceof RandomAccessFile)
+        && !(obj instanceof FileInputStream)
+        && !(obj instanceof FileOutputStream))
+      throw new InternalError ();
+
     this.fd = fd;
     this.file_obj = obj;
   }
 
-  public long size () throws IOException
-  {
-    if (!isOpen ())
-      throw new ClosedChannelException ();
+  private native long implPosition ();
+  private native FileChannel implPosition (long newPosition);
+  private native FileChannel implTruncate (long size);
+  
+  private native long nio_mmap_file (long pos, long size, int mode);
+  private native void nio_unmmap_file (long address, int size);
+  private native void nio_msync (long address, int length);
 
-    return lengthInternal (fd);
-  }
+  public native long size () throws IOException;
     
   protected void implCloseChannel() throws IOException
   {
+    // FIXME
+    
     if (address != 0)
       {
-        nio_unmmap_file (fd, address, (int) length);
+        //nio_unmmap_file (fd, address, (int) length);
         address = 0;
       }
 
-    // FIXME
-    fd = 0;
-
     if (file_obj instanceof RandomAccessFile)
       {
         RandomAccessFile o = (RandomAccessFile) file_obj;
@@ -121,14 +122,14 @@ public class FileChannelImpl extends FileChannel
     int s = (int)size();
 
     if (buf == null)
-	    {
+      {
         throw new EOFException("file not mapped");
-	    }
+      }
 
     for (int i=0; i<s; i++)
-	    {
+      {
         dst.put( buf.get() );
-	    }
+      }
 
     return s;
   }
@@ -165,15 +166,15 @@ public class FileChannelImpl extends FileChannel
     int w = 0;
 
     if (buf == null)
-	    {
+      {
         throw new EOFException ("file not mapped");
-	    }
+      }
 
     while (src.hasRemaining ())
-	    {
+      {
         buf.put (src.get ());
         w++;
-	    }
+      }
 
     return w;
   }
@@ -195,14 +196,14 @@ public class FileChannelImpl extends FileChannel
   public long write(ByteBuffer[] srcs, int offset, int length)
     throws IOException
   {
-    long res = 0;
+    long result = 0;
 
     for (int i = offset;i < offset + length;i++)
-	    {
-        res += write (srcs[i]);
-	    }
+      {
+        result += write (srcs[i]);
+      }
     
-    return res;
+    return result;
   }
 				   
   public MappedByteBuffer map (FileChannel.MapMode mode, long position,
@@ -252,7 +253,7 @@ public class FileChannelImpl extends FileChannel
 
     // FIXME: What to do with metaData ?
     
-    nio_msync (fd, address, length);
+    nio_msync (address, length);
   }
 
   public long transferTo (long position, long count, WritableByteChannel target)
@@ -322,7 +323,7 @@ public class FileChannelImpl extends FileChannel
     if (!isOpen ())
       throw new ClosedChannelException ();
 
-    throw new Error ("not implemented");
+    return implPosition ();
   }
   
   public FileChannel position (long newPosition)
@@ -334,7 +335,7 @@ public class FileChannelImpl extends FileChannel
     if (!isOpen ())
       throw new ClosedChannelException ();
 
-    throw new Error ("not implemented");
+    return implPosition (newPosition);
   }
   
   public FileChannel truncate (long size)
@@ -348,10 +349,6 @@ public class FileChannelImpl extends FileChannel
 
     // FIXME: check for NonWritableChannelException
 
-    throw new Error ("not implemented");
+    return implTruncate (size);
   }
-  
-  private static native long nio_mmap_file (int fd, long pos, int size, int mode);
-  private static native void nio_unmmap_file (int fd, long address, int size);
-  private static native void nio_msync (int fd, long address, int length);
 }