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//# TSMFile.cc: Tiled Hypercube Storage Manager for tables
//# Copyright (C) 1995,1996,1997,2001
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//# Includes
#include <casacore/tables/DataMan/TSMFile.h>
#include <casacore/tables/DataMan/TSMOption.h>
#include <casacore/tables/DataMan/TiledStMan.h>
#include <casacore/tables/Tables/Table.h>
#include <casacore/tables/DataMan/DataManError.h>
#include <casacore/casa/IO/AipsIO.h>
#include <casacore/casa/BasicSL/String.h>
#include <casacore/casa/stdio.h> // for snprintf
namespace casacore { //# NAMESPACE CASACORE - BEGIN
TSMFile::TSMFile (const TiledStMan* stman, uInt fileSequenceNr,
const TSMOption& tsmOpt,
const std::shared_ptr<MultiFileBase>& mfile)
: fileSeqnr_p (fileSequenceNr),
file_p (0),
length_p (0)
{
// Create the file.
char strc[8];
snprintf (strc, sizeof(strc), "_TSM%i", fileSeqnr_p);
String fileName = stman->fileName() + strc;
Bool mapOpt = tsmOpt.option() == TSMOption::MMap;
uInt bufSize = 0;
if (tsmOpt.option() == TSMOption::Buffer) {
bufSize = tsmOpt.bufferSize();
}
file_p = new BucketFile (fileName, bufSize, mapOpt, mfile);
}
TSMFile::TSMFile (const String& fileName, Bool writable,
const TSMOption& tsmOpt,
const std::shared_ptr<MultiFileBase>& mfile)
: fileSeqnr_p (0),
file_p (0),
length_p (0)
{
// Create the file.
Bool mapOpt = tsmOpt.option() == TSMOption::MMap;
uInt bufSize = 0;
if (tsmOpt.option() == TSMOption::Buffer) {
bufSize = tsmOpt.bufferSize();
}
file_p = new BucketFile (fileName, writable, bufSize, mapOpt, mfile);
}
TSMFile::TSMFile (const TiledStMan* stman, AipsIO& ios, uInt seqnr,
const TSMOption& tsmOpt,
const std::shared_ptr<MultiFileBase>& mfile)
: file_p (0)
{
getObject (ios);
if (seqnr != fileSeqnr_p) {
throw DataManInternalError ("TSMFile::TSMFile " +
stman->dataManagerName());
}
char strc[8];
snprintf (strc, sizeof(strc), "_TSM%i", fileSeqnr_p);
String fileName = stman->fileName() + strc;
Bool mapOpt = tsmOpt.option() == TSMOption::MMap;
uInt bufSize = 0;
if (tsmOpt.option() == TSMOption::Buffer) {
bufSize = tsmOpt.bufferSize();
}
file_p = new BucketFile (fileName, stman->table().isWritable(),
bufSize, mapOpt, mfile);
}
TSMFile::~TSMFile()
{
delete file_p;
}
void TSMFile::putObject (AipsIO& ios) const
{
// Take care of forward compatibility (for small enough files).
uInt version = (length_p < 2u*1024u*1024u*1024u ? 1 : 2);
ios << version;
ios << fileSeqnr_p;
if (version == 1) {
uInt len = length_p;
ios << len;
} else {
ios << length_p;
}
}
void TSMFile::getObject (AipsIO& ios)
{
uInt version;
ios >> version;
ios >> fileSeqnr_p;
if (version == 1) {
uInt len;
ios >> len;
length_p = len;
} else {
ios >> length_p;
}
}
} //# NAMESPACE CASACORE - END
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