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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* This file contains private information about the H5S module
*/
#ifndef _H5Sprivate_H
#define _H5Sprivate_H
#include "H5Spublic.h"
/* Private headers needed by this file */
#include "H5private.h" /* Generic Functions */
#include "H5Dprivate.h" /* Dataset functions */
#include "H5Fprivate.h" /* Files */
#include "H5Gprivate.h" /* Groups */
#include "H5Oprivate.h" /* Object headers */
#include "H5Pprivate.h" /* Property lists */
/* Flags for H5S_find */
#define H5S_CONV_PAR_IO_POSSIBLE 0x0001
/* The storage options are mutually exclusive */
/* (2-bits reserved for storage type currently) */
#define H5S_CONV_STORAGE_COMPACT 0x0000 /* i.e. '0' */
#define H5S_CONV_STORAGE_CONTIGUOUS 0x0002 /* i.e. '1' */
#define H5S_CONV_STORAGE_CHUNKED 0x0004 /* i.e. '2' */
#define H5S_CONV_STORAGE_MASK 0x0006
/* Forward references of package typedefs */
typedef struct H5S_t H5S_t;
typedef struct H5S_pnt_node_t H5S_pnt_node_t;
typedef struct H5S_hyper_span_t H5S_hyper_span_t;
typedef struct H5S_hyper_span_info_t H5S_hyper_span_info_t;
typedef struct H5S_hyper_dim_t H5S_hyper_dim_t;
/* Point selection iteration container */
typedef struct {
H5S_pnt_node_t *curr; /* Pointer to next node to output */
} H5S_point_iter_t;
/* Hyperslab selection iteration container */
typedef struct {
/* Common fields for all hyperslab selections */
hssize_t *off; /* Offset in span node (used as position for regular hyperslabs) */
unsigned iter_rank; /* Rank of iterator information */
/* (This should always be the same as the dataspace
* rank, except for regular hyperslab selections in
* which there are contiguous regions in the lower
* dimensions which have been "flattened" out
*/
/* "Flattened" regular hyperslab selection fields */
H5S_hyper_dim_t *diminfo; /* "Flattened" regular selection information */
hsize_t *size; /* "Flattened" dataspace extent information */
hssize_t *sel_off; /* "Flattened" selection offset information */
/* Irregular hyperslab selection fields */
H5S_hyper_span_info_t *spans; /* Pointer to copy of the span tree */
H5S_hyper_span_t **span;/* Array of pointers to span nodes */
} H5S_hyper_iter_t;
/* "All" selection iteration container */
typedef struct {
hsize_t offset; /* Next element to output */
} H5S_all_iter_t;
typedef struct H5S_sel_iter_t H5S_sel_iter_t;
/* Method to retrieve the current coordinates of iterator for current selection */
typedef herr_t (*H5S_sel_iter_coords_func_t)(const H5S_sel_iter_t *iter, hssize_t *coords);
/* Method to determine number of elements left in iterator for current selection */
typedef hsize_t (*H5S_sel_iter_nelmts_func_t)(const H5S_sel_iter_t *iter);
/* Method to move selection iterator to the next element in the selection */
typedef herr_t (*H5S_sel_iter_next_func_t)(H5S_sel_iter_t *iter, size_t nelem);
/* Method to release iterator for current selection */
typedef herr_t (*H5S_sel_iter_release_func_t)(H5S_sel_iter_t *iter);
/* Selection iteration container */
struct H5S_sel_iter_t {
/* Information common to all iterators */
unsigned rank; /* Rank of dataspace the selection iterator is operating on */
hsize_t *dims; /* Dimensions of dataspace the selection is operating on */
hsize_t elmt_left; /* Number of elements left to iterate over */
/* Information specific to each type of iterator */
union {
H5S_point_iter_t pnt; /* Point selection iteration information */
H5S_hyper_iter_t hyp; /* New Hyperslab selection iteration information */
H5S_all_iter_t all; /* "All" selection iteration information */
} u;
/* Methods on selections */
H5S_sel_iter_coords_func_t iter_coords; /* Method to retrieve the current coordinates of iterator for current selection */
H5S_sel_iter_nelmts_func_t iter_nelmts; /* Method to determine number of elements left in iterator for current selection */
H5S_sel_iter_next_func_t iter_next; /* Method to move selection iterator to the next element in the selection */
H5S_sel_iter_release_func_t iter_release; /* Method to release iterator for current selection */
};
typedef struct H5S_conv_t {
H5S_sel_type ftype;
H5S_sel_type mtype;
/*
* If there is no data type conversion then it might be possible to
* transfer data points between application memory and the file in one
* step without going through the data type conversion buffer.
*/
/* Read from file to application w/o intermediate scratch buffer */
herr_t (*read)(H5F_t *f, const struct H5O_layout_t *layout,
H5P_genplist_t *dc_plist, const H5D_storage_t *store,
size_t elmt_size, const H5S_t *file_space,
const H5S_t *mem_space, hid_t dxpl_id, void *buf/*out*/);
/* Write directly from app buffer to file */
herr_t (*write)(H5F_t *f, struct H5O_layout_t *layout,
H5P_genplist_t *dc_plist, const union H5D_storage_t *store,
size_t elmt_size, const H5S_t *file_space,
const H5S_t *mem_space, hid_t dxpl_id, const void *buf);
#ifdef H5S_DEBUG
struct {
H5_timer_t scat_timer; /*time spent scattering */
hsize_t scat_nbytes; /*scatter throughput */
hsize_t scat_ncalls; /*number of calls */
H5_timer_t gath_timer; /*time spent gathering */
hsize_t gath_nbytes; /*gather throughput */
hsize_t gath_ncalls; /*number of calls */
H5_timer_t bkg_timer; /*time for background */
hsize_t bkg_nbytes; /*background throughput */
hsize_t bkg_ncalls; /*number of calls */
H5_timer_t read_timer; /*time for read calls */
hsize_t read_nbytes; /*total bytes read */
hsize_t read_ncalls; /*number of calls */
H5_timer_t write_timer; /*time for write calls */
hsize_t write_nbytes; /*total bytes written */
hsize_t write_ncalls; /*number of calls */
} stats[2]; /* 0=output, 1=input */
#endif
} H5S_conv_t;
/* Operations on dataspaces */
H5_DLL H5S_t *H5S_copy(const H5S_t *src);
H5_DLL herr_t H5S_close(H5S_t *ds);
H5_DLL H5S_conv_t *H5S_find(const H5S_t *mem_space, const H5S_t *file_space,
unsigned flags);
H5_DLL H5S_class_t H5S_get_simple_extent_type(const H5S_t *ds);
H5_DLL hssize_t H5S_get_simple_extent_npoints(const H5S_t *ds);
H5_DLL hsize_t H5S_get_npoints_max(const H5S_t *ds);
H5_DLL int H5S_get_simple_extent_ndims(const H5S_t *ds);
H5_DLL int H5S_get_simple_extent_dims(const H5S_t *ds, hsize_t dims[]/*out*/,
hsize_t max_dims[]/*out*/);
H5_DLL herr_t H5S_modify(struct H5G_entry_t *ent, const H5S_t *space,
hbool_t update_time, hid_t dxpl_id);
H5_DLL herr_t H5S_append(H5F_t *f, hid_t dxpl_id, struct H5O_t *oh, const H5S_t *ds);
H5_DLL H5S_t *H5S_read(struct H5G_entry_t *ent, hid_t dxpl_id);
H5_DLL int H5S_extend(H5S_t *space, const hsize_t *size);
H5_DLL int H5S_set_extent(H5S_t *space, const hsize_t *size);
H5_DLL H5S_t *H5S_create_simple(unsigned rank, const hsize_t dims[/*rank*/],
const hsize_t maxdims[/*rank*/]);
H5_DLL herr_t H5S_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg, FILE *stream,
int indent, int fwidth);
/* Operations on selections */
H5_DLL herr_t H5S_select_deserialize(H5S_t *space, const uint8_t *buf);
H5_DLL H5S_sel_type H5S_get_select_type(const H5S_t *space);
H5_DLL herr_t H5S_select_iterate(void *buf, hid_t type_id, const H5S_t *space,
H5D_operator_t op, void *operator_data);
H5_DLL herr_t H5S_select_fill(void *fill, size_t fill_size,
const H5S_t *space, void *buf);
H5_DLL herr_t H5S_select_fscat (H5F_t *f, struct H5O_layout_t *layout,
H5P_genplist_t *dc_plist, const union H5D_storage_t *store, size_t elmt_size,
const H5S_t *file_space, H5S_sel_iter_t *file_iter, hsize_t nelmts,
hid_t dxpl_id, const void *_buf);
H5_DLL hsize_t H5S_select_fgath (H5F_t *f, const struct H5O_layout_t *layout,
H5P_genplist_t *dc_plist, const union H5D_storage_t *store, size_t elmt_size,
const H5S_t *file_space, H5S_sel_iter_t *file_iter, hsize_t nelmts,
hid_t dxpl_id, void *buf);
H5_DLL herr_t H5S_select_mscat (const void *_tscat_buf, size_t elmt_size,
const H5S_t *space, H5S_sel_iter_t *iter, hsize_t nelmts,
hid_t dxpl_id, void *_buf/*out*/);
H5_DLL hsize_t H5S_select_mgath (const void *_buf, size_t elmt_size,
const H5S_t *space, H5S_sel_iter_t *iter, hsize_t nelmts,
hid_t dxpl_id, void *_tgath_buf/*out*/);
H5_DLL herr_t H5S_select_read(H5F_t *f, const struct H5O_layout_t *layout,
H5P_genplist_t *dc_plist, const union H5D_storage_t *store, size_t elmt_size,
const H5S_t *file_space, const H5S_t *mem_space, hid_t dxpl_id,
void *buf/*out*/);
H5_DLL herr_t H5S_select_write(H5F_t *f, struct H5O_layout_t *layout,
H5P_genplist_t *dc_plist, const union H5D_storage_t *store, size_t elmt_size,
const H5S_t *file_space, const H5S_t *mem_space, hid_t dxpl_id,
const void *buf/*out*/);
H5_DLL htri_t H5S_select_valid(const H5S_t *space);
H5_DLL hssize_t H5S_get_select_npoints(const H5S_t *space);
H5_DLL herr_t H5S_select_all(H5S_t *space, unsigned rel_prev);
H5_DLL herr_t H5S_select_none(H5S_t *space);
H5_DLL herr_t H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op, const hssize_t start[],
const hsize_t *stride, const hsize_t count[],
const hsize_t *block);
H5_DLL herr_t H5S_hyper_add_span_element(H5S_t *space, unsigned rank,
hssize_t *coords);
H5_DLL herr_t H5S_hyper_reset_scratch(H5S_t *space);
/* Operations on selection iterators */
H5_DLL herr_t H5S_select_iter_init(H5S_sel_iter_t *iter, const H5S_t *space, size_t elmt_size);
H5_DLL herr_t H5S_select_iter_coords(const H5S_sel_iter_t *sel_iter, hssize_t *coords);
H5_DLL hsize_t H5S_select_iter_nelmts(const H5S_sel_iter_t *sel_iter);
H5_DLL herr_t H5S_select_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
H5_DLL herr_t H5S_select_iter_release(H5S_sel_iter_t *sel_iter);
#endif /* _H5Sprivate_H */
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