From d199feb74801bcbcf2306ae4f40866814f1099dc Mon Sep 17 00:00:00 2001
From: Per Bothner <bothner@gcc.gnu.org>
Date: Sun, 29 Feb 2004 11:12:45 -0800
Subject: MappedByteBuffer.java: (forceImpl...

	* java/nio/MappedByteBuffer.java: (forceImpl, isLoadedImpl, loadImpl,
	unmapImpl):  New dummy methods, to be overridden by subclass.
	(finalize, isLoaded, load, force):  New methods.
	* java/nio/MappedByteBufferImpl.java:  More-or-less rewrite.
	Now works, at least for read mapping.

From-SVN: r78662
---
 libjava/java/nio/MappedByteBuffer.java | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

(limited to 'libjava/java/nio/MappedByteBuffer.java')

diff --git a/libjava/java/nio/MappedByteBuffer.java b/libjava/java/nio/MappedByteBuffer.java
index 8f4b872cd11..29b0453cbba 100644
--- a/libjava/java/nio/MappedByteBuffer.java
+++ b/libjava/java/nio/MappedByteBuffer.java
@@ -44,28 +44,46 @@ package java.nio;
  */
 public abstract class MappedByteBuffer extends ByteBuffer
 {
-  private boolean loaded = false;
-  
   MappedByteBuffer (int capacity, int limit, int position, int mark)
   {
     super (capacity, limit, position, mark);
   }
   
+  void forceImpl()
+  {
+  }
+
   public final MappedByteBuffer force ()
   {
-    // FIXME: Flush to disk here.
+    forceImpl();
     return this;
   }
     
+  boolean isLoadedImpl()
+  {
+    load();
+    return true;
+  }
+
   public final boolean isLoaded ()
   {
-    return loaded;
+    return isLoadedImpl();
   }
     
+  void loadImpl()
+  {
+  }
+
   public final MappedByteBuffer load ()
   {
-    // FIXME: Try to load all pages into memory.
-    loaded = true;
+    loadImpl();
     return this;
   }
+
+  void unmapImpl ()
+  {
+    forceImpl();
+  }
+
+  public void finalize () { unmapImpl(); }
 }
-- 
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