2007-11-28 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	Added direct I/O support. The current implementation uses O_DIRECT,
	which is not posix standard and is tested on linux 2.6.21.
	Currently only file allocation uses direct I/O.
	* src/SingleFileAllocationIterator.{h, cc}
	* test/SingleFileAllocationIteratorTest.cc
	* src/MultiFileAllocationIterator.{h, cc}
	* test/MultiFileAllocationIteratorTest.cc
	* src/BinaryStream.h
	* src/DiskWriter.h
	* src/AbstractDiskWriter.{h, cc}
	* src/ByteArrayDiskWriter.h
	* src/DiskAdaptor.h
	* src/AbstractSingleDiskAdaptor.{h, cc}
	* src/MultiDiskAdaptor.{h, cc}
	* src/FileAllocationEntry.cc
	* src/Util.{h, cc}
	* src/OptionHandlerFactory.cc
	* src/prefs.h
	* src/version_usage.cc
	* src/option_processing.cc

	Moved FileAllocationMan::markCurrentFileAllocationEntryDone() to
	handleException.
	* src/MultiFileAllocationIterator.cc

	Added EINTR handling
	* src/SocketCore.cc

1 files changed, 16 insertions, 1 deletions

diff --git a/src/AbstractSingleDiskAdaptor.cc b/src/AbstractSingleDiskAdaptor.cc
index 490525ea..bb9efe0f 100644
--- a/src/AbstractSingleDiskAdaptor.cc
+++ b/src/AbstractSingleDiskAdaptor.cc
@@ -73,5 +73,20 @@ bool AbstractSingleDiskAdaptor::fileExists()
 
 FileAllocationIteratorHandle AbstractSingleDiskAdaptor::fileAllocationIterator()
 {
-  return new SingleFileAllocationIterator(this);
+  SingleFileAllocationIteratorHandle h =
+    new SingleFileAllocationIterator(this,
+				     size(),
+				     totalLength);
+  h->init();
+  return h;
+}
+
+void AbstractSingleDiskAdaptor::enableDirectIO()
+{
+  diskWriter->enableDirectIO();
+}
+
+void AbstractSingleDiskAdaptor::disableDirectIO()
+{
+  diskWriter->disableDirectIO();
 }