diff options
Diffstat (limited to 'tools/h5repack/h5repack_layout.c')
| -rw-r--r-- | tools/h5repack/h5repack_layout.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/tools/h5repack/h5repack_layout.c b/tools/h5repack/h5repack_layout.c new file mode 100644 index 0000000..1cf1680 --- /dev/null +++ b/tools/h5repack/h5repack_layout.c @@ -0,0 +1,175 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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; +} + |