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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "hdf5.h"
#include "h5test.h"
#include "h5repack.h"
static void CANNOT_LAYOUT(pack_opt_t *options)
{
if (options->verbose)
printf("Warning: This layout cannot be applied, this object\
requires chunked layout\n");
}
/*-------------------------------------------------------------------------
* Function: layout_this
*
* Purpose: check if the layout can be applied;
* find the object name NAME (got from the traverse list)
* in the repack options list; assign the layout information OBJ
*
* Return: 0 cannot apply, 1 can, -1 error
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: December 30, 2003
*
*-------------------------------------------------------------------------
*/
int layout_this(hid_t dcpl_id, /* DCPL from input object */
const char* name, /* object name from traverse list */
pack_opt_t *options, /* repack options */
pack_info_t *pack /*OUT*/) /* object to apply layout */
{
int nfilters; /* number of filters in the input object */
H5D_layout_t layout; /* layout */
char *pdest;
int result;
int i, ret=1;
/* check if we have filters in the input object */
if ((nfilters = H5Pget_nfilters(dcpl_id))<0)
return -1;
/* applying to all objects */
if (options->all_layout)
{
/* assign the global layout info to the OBJ info */
pack->layout=options->layout_g;
switch (options->layout_g)
{
case H5D_CHUNKED:
pack->chunk.rank=options->chunk_g.rank;
for ( i=0; i<pack->chunk.rank; i++)
pack->chunk.chunk_lengths[i]=options->chunk_g.chunk_lengths[i];
break;
case H5D_CONTIGUOUS:
case H5D_COMPACT:
if (nfilters)
{
CANNOT_LAYOUT(options);
ret=0;
}
break;
default:
ret=0;
break;
}/*switch*/
return ret;
}
/* find the object */
for ( i=0; i<options->op_tbl->nelems; i++)
{
layout=options->op_tbl->objs[i].layout;
if ( layout != -1 )
{
if (strcmp(options->op_tbl->objs[i].path,name)==0)
{
if (nfilters && layout!=H5D_CHUNKED)
{
CANNOT_LAYOUT(options);
return 0;
}
else
{
*pack=options->op_tbl->objs[i];
return 1;
}
}
pdest = strstr(name,options->op_tbl->objs[i].path);
result = (int)(pdest - name);
/* found at position 1, meaning without '/' */
if( pdest != NULL && result==1 )
{
if (nfilters && layout!=H5D_CHUNKED)
{
CANNOT_LAYOUT(options);
return 0;
}
else
{
*pack=options->op_tbl->objs[i];
return 1;
}
}
}
}
return 0;
}
/*-------------------------------------------------------------------------
* Function: apply_layout
*
* Purpose: apply a layout to the property list. Valid values for layout are:
*
* H5D_COMPACT
* Store raw data in the dataset object header in file.
* This should only be used for very small amounts of raw data.
* H5D_CONTIGUOUS
* Store raw data separately from the object header in one large chunk
* in the file.
* H5D_CHUNKED
* Store raw data separately from the object header as chunks of data in
* separate locations in the file.
*
* Return: 0, ok, -1 no
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: December 30, 2003
*
*-------------------------------------------------------------------------
*/
int apply_layout(hid_t dcpl_id,
pack_info_t *obj) /* info about object */
{
if (H5Pset_layout(dcpl_id, obj->layout)<0)
return -1;
if (H5D_CHUNKED==obj->layout) { /* set up chunk */
if(H5Pset_chunk(dcpl_id, obj->chunk.rank, obj->chunk.chunk_lengths)<0)
return -1;
}
else if (H5D_COMPACT==obj->layout) {
if (H5Pset_alloc_time(dcpl_id, H5D_ALLOC_TIME_EARLY)<0)
return -1;
}
return 0;
}
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