* java/nio/ByteBufferImpl.java (compact): Don't reset position

	in empty case.
	* gnu/java/nio/ChannelReader.java (read): Synchronize.
	(close): Synchronize.
	* java/nio/ShortBufferImpl.java (compact): Rewrote.
	* java/nio/LongBufferImpl.java (compact): Rewrote.
	* java/nio/IntBufferImpl.java (compact): Rewrote.
	* java/nio/FloatBufferImpl.java (compact): Rewrote.
	* java/nio/DoubleBufferImpl.java (compact): Rewrote.
	* java/nio/CharBufferImpl.java (compact): Rewrote.
	* gnu/java/nio/ChannelWriter.java: New file.
	* java/nio/channels/Channels.java (newWriter): Implemented.

1 files changed, 6 insertions, 7 deletions

diff --git a/java/nio/FloatBufferImpl.java b/java/nio/FloatBufferImpl.java
index b4868780c..f1182ba38 100644
--- a/java/nio/FloatBufferImpl.java
+++ b/java/nio/FloatBufferImpl.java
@@ -82,15 +82,14 @@ final class FloatBufferImpl extends FloatBuffer
   {
     checkIfReadOnly();
     mark = -1;
-    int copied = 0;
-    
-    while (remaining () > 0)
+    int p = position();
+    int n = limit() - p;
+    if (n > 0)
       {
-	put (copied, get ());
-	copied++;
+        System.arraycopy(backing_buffer, array_offset + p,
+                         backing_buffer, array_offset, n);
       }
-
-    position (copied);
+    position(n);
     limit(capacity());
     return this;
   }