SegStream.cpp

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/*
// $Id: //open/dev/fennel/segment/SegStream.cpp#9 $
// Fennel is a library of data storage and processing components.
// Copyright (C) 2005-2009 The Eigenbase Project
// Copyright (C) 2005-2009 SQLstream, Inc.
// Copyright (C) 2005-2009 LucidEra, Inc.
// Portions Copyright (C) 1999-2009 John V. Sichi
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 of the License, or (at your option)
// any later version approved by The Eigenbase Project.
//
// This program 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 for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "fennel/common/CommonPreamble.h"
#include "fennel/segment/SegStream.h"

FENNEL_BEGIN_CPPFILE("$Id: //open/dev/fennel/segment/SegStream.cpp#9 $");

SegStream::SegStream(
    SegmentAccessor const &segmentAccessorInit,uint cbExtraHeader)
    : segmentAccessor(segmentAccessorInit),
      pageLock(segmentAccessor)
{
    cbPageHeader = sizeof(SegStreamNode) + cbExtraHeader;
}

void SegStream::closeImpl()
{
    pageLock.unlock();
    segmentAccessor.reset();
}

SharedSegment SegStream::getSegment() const
{
    return segmentAccessor.pSegment;
}

SegmentAccessor const &SegStream::getSegmentAccessor() const
{
    return segmentAccessor;
}

SegStreamMarker::SegStreamMarker(SegStream const &segStream)
    : ByteStreamMarker(segStream)
{
    segPos.segByteId = SegByteId(MAXU);
    segPos.cbOffset = MAXU;
}

FileSize SegStreamMarker::getOffset() const
{
    return segPos.cbOffset;
}

FENNEL_END_CPPFILE("$Id: //open/dev/fennel/segment/SegStream.cpp#9 $");

// End SegStream.cpp

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