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#include <algorithm>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <string>
#include <hdf5.h>
#include "cctk.h"
#include "cctk_Parameters.h"
#include "file.hh"
namespace CarpetIOF5 {
namespace F5 {
using namespace std;
file_t::
file_t (cGH const * const cctkGH,
string const basename,
string const extension,
bool const do_truncate)
: m_cctkGH (cctkGH),
m_basename (basename),
m_extension (extension)
{
assert (cctkGH);
int const proc = CCTK_MyProc (cctkGH);
m_have_metafile = determine_want_metafile (proc);
m_output_processor = determine_output_processor (proc);
m_metafilename = make_metafilename ();
m_filename = make_filename (proc);
char const * const metafilenameptr = m_metafilename.c_str();
char const * const filenameptr = m_filename.c_str();
htri_t is_hdf5;
H5E_BEGIN_TRY {
is_hdf5 = H5Fis_hdf5 (filenameptr);
} H5E_END_TRY;
bool const file_exists = is_hdf5 > 0;
// Ignore the metafile when determining whether the file already
// exists
if (do_truncate or not file_exists)
{
m_hdf5_metafile = -1;
if (m_have_metafile)
{
m_hdf5_metafile
= H5Fcreate (metafilenameptr,
H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
}
m_hdf5_file
= H5Fcreate (filenameptr, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
}
else
{
m_hdf5_metafile = -1;
if (m_have_metafile)
{
m_hdf5_metafile
= H5Fopen (metafilenameptr, H5F_ACC_RDWR, H5P_DEFAULT);
}
m_hdf5_file = H5Fopen (filenameptr, H5F_ACC_RDWR, H5P_DEFAULT);
}
m_filenames.resize (CCTK_nProcs (cctkGH));
m_filenames.at(proc) = m_filename;
assert (invariant());
}
file_t::
~ file_t()
{
if (m_have_metafile)
{
herr_t const herr = H5Fclose (m_hdf5_metafile);
assert (not herr);
}
herr_t const herr = H5Fclose (m_hdf5_file);
assert (not herr);
}
bool file_t::
determine_want_metafile (int const proc)
const
{
DECLARE_CCTK_PARAMETERS;
if (CCTK_EQUALS (out_mode, "proc") or
CCTK_EQUALS (out_mode, "np"))
{
return proc == 0;
}
else if (CCTK_EQUALS (out_mode, "onefile"))
{
return false;
}
else
{
assert (0);
}
}
int file_t::
determine_output_processor (int const proc)
const
{
DECLARE_CCTK_PARAMETERS;
if (CCTK_EQUALS (out_mode, "proc"))
{
return proc;
}
else if (CCTK_EQUALS (out_mode, "np"))
{
return proc / out_proc_every * out_proc_every;
}
else if (CCTK_EQUALS (out_mode, "onefile"))
{
return 0;
}
else
{
assert (0);
}
}
string file_t::
make_metafilename ()
const
{
return m_basename + m_extension;
}
string file_t::
make_filename (int const proc)
const
{
DECLARE_CCTK_PARAMETERS;
ostringstream filenamebuf;
filenamebuf << m_basename;
if (CCTK_EQUALS (out_mode, "proc") or
CCTK_EQUALS (out_mode, "np"))
{
filenamebuf << ".p" << setw (processor_digits) << setfill ('0') << proc;
}
else if (CCTK_EQUALS (out_mode, "onefile"))
{
// do nothing
}
else
{
assert (0);
}
filenamebuf << m_extension;
return filenamebuf.str();
}
cGH const * file_t::
get_cctkGH ()
const
{
return m_cctkGH;
}
bool file_t::
get_have_metafile ()
const
{
return m_have_metafile;
}
int file_t::
get_output_processor ()
const
{
return m_output_processor;
}
string file_t::
get_filename (int const proc)
const
{
assert (proc >= 0 and proc < CCTK_nProcs (m_cctkGH));
if (m_filenames.at(proc).empty())
{
m_filenames.at(proc) = make_filename (proc);
}
return m_filenames.at(proc);
}
hid_t file_t::
get_hdf5_metafile()
const
{
return m_hdf5_metafile;
}
hid_t file_t::
get_hdf5_file()
const
{
return m_hdf5_file;
}
void file_t::
get_link_destination (string & filename,
string & objectname)
const
{
static bool initialised = false;
static string l_filename;
static string l_objectname;
if (not initialised)
{
initialised = true;
l_filename = m_filename;
l_objectname = string ("");
}
filename = l_filename;
objectname = l_objectname;
}
bool file_t::
invariant()
const
{
return (m_cctkGH != 0
and (not m_have_metafile or m_hdf5_metafile >= 0)
and m_hdf5_file >= 0);
}
} // namespace F5
} // namespace CarpetIOF5
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