--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/debugger/DataSource.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2000-2001 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.debugger;
+
+import java.io.*;
+
+/** An abstraction which represents a seekable data source.
+    RandomAccessFile can be trivially mapped to this; in addition, we
+    can support an adapter for addresses, so we can parse DLLs
+    directly out of the remote process's address space.  This class is
+    used by the Windows COFF and Posix ELF implementations. */
+
+public interface DataSource {
+  public byte  readByte()       throws IOException;
+  public short readShort()      throws IOException;
+  public int   readInt()        throws IOException;
+  public long  readLong()       throws IOException;
+  public int   read(byte[] b)   throws IOException;
+  public void  seek(long pos)   throws IOException;
+  public long  getFilePointer() throws IOException;
+  public void  close()          throws IOException;
+}