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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Thursday, September 28, 2000
*
* Purpose: This file contains declarations which are visible only within
* the H5S package. Source files outside the H5S package should
* include H5Sprivate.h instead.
*/
#ifndef H5S_PACKAGE
#error "Do not include this file outside the H5S package!"
#endif
#ifndef _H5Spkg_H
#define _H5Spkg_H
#include "H5Sprivate.h"
/* Flags to indicate special dataspace features are active */
#define H5S_VALID_MAX 0x01
#define H5S_VALID_PERM 0x02
/* Initial version of the dataspace information */
#define H5O_SDSPACE_VERSION_1 1
/* This version adds support for "null" dataspaces, encodes the type of the
* dataspace in the message and eliminated the rest of the "reserved"
* bytes.
*/
#define H5O_SDSPACE_VERSION_2 2
/* The latest version of the format. Look through the 'encode'
* and 'size' callbacks for places to change when updating this. */
#define H5O_SDSPACE_VERSION_LATEST H5O_SDSPACE_VERSION_2
/*
* Dataspace extent information
*/
/* Extent container */
struct H5S_extent_t {
H5O_shared_t sh_loc; /* Shared message info (must be first) */
H5S_class_t type; /* Type of extent */
unsigned version; /* Version of object header message to encode this object with */
hsize_t nelem; /* Number of elements in extent */
unsigned rank; /* Number of dimensions */
hsize_t *size; /* Current size of the dimensions */
hsize_t *max; /* Maximum size of the dimensions */
};
/*
* Dataspace selection information
*/
/* Node in point selection list (typedef'd in H5Sprivate.h) */
struct H5S_pnt_node_t {
hsize_t *pnt; /* Pointer to a selected point */
struct H5S_pnt_node_t *next; /* pointer to next point in list */
};
/* Information about point selection list */
typedef struct {
H5S_pnt_node_t *head; /* Pointer to head of point list */
} H5S_pnt_list_t;
/* Information about new-style hyperslab spans */
/* Information a particular hyperslab span */
struct H5S_hyper_span_t {
hsize_t low, high; /* Low & high bounds of span */
hsize_t nelem; /* Number of elements in span (only needed during I/O) */
hsize_t pstride; /* Pseudo-stride from start of previous span (only used during I/O) */
struct H5S_hyper_span_info_t *down; /* Pointer to list of spans in next dimension down */
struct H5S_hyper_span_t *next; /* Pointer to next span in list */
};
/* Information about a list of hyperslab spans */
struct H5S_hyper_span_info_t {
unsigned count; /* Ref. count of number of spans which share this span */
struct H5S_hyper_span_info_t *scratch; /* Scratch pointer
* (used during copies, as mark
* during precomputes for I/O &
* to point to the last span in a
* list during single element adds)
*/
struct H5S_hyper_span_t *head; /* Pointer to list of spans in next dimension down */
};
/* Information about new-style hyperslab selection */
typedef struct {
hbool_t diminfo_valid; /* Whether the dataset has valid diminfo */
H5S_hyper_dim_t opt_diminfo[H5S_MAX_RANK]; /* per-dim selection info */
H5S_hyper_dim_t app_diminfo[H5S_MAX_RANK]; /* per-dim selection info */
/* 'opt_diminfo' points to a [potentially] optimized version of the user's
* hyperslab information. 'app_diminfo' points to the actual parameters
* that the application used for setting the hyperslab selection. These
* are only used for re-gurgitating the original values used to set the
* hyperslab to the application when it queries the hyperslab selection
* information. */
H5S_hyper_span_info_t *span_lst; /* List of hyperslab span information */
} H5S_hyper_sel_t;
/* Selection information methods */
/* Method to copy a selection */
typedef herr_t (*H5S_sel_copy_func_t)(H5S_t *dst, const H5S_t *src, hbool_t share_selection);
/* Method to retrieve a list of offset/length sequences for selection */
typedef herr_t (*H5S_sel_get_seq_list_func_t)(const H5S_t *space, unsigned flags,
H5S_sel_iter_t *iter, size_t maxseq, size_t maxbytes,
size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);
/* Method to release current selection */
typedef herr_t (*H5S_sel_release_func_t)(H5S_t *space);
/* Method to determine if current selection is valid for dataspace */
typedef htri_t (*H5S_sel_is_valid_func_t)(const H5S_t *space);
/* Method to determine number of bytes required to store current selection */
typedef hssize_t (*H5S_sel_serial_size_func_t)(const H5S_t *space);
/* Method to store current selection in "serialized" form (a byte sequence suitable for storing on disk) */
typedef herr_t (*H5S_sel_serialize_func_t)(const H5S_t *space, uint8_t *buf);
/* Method to store create selection from "serialized" form (a byte sequence suitable for storing on disk) */
typedef herr_t (*H5S_sel_deserialize_func_t)(H5S_t *space, const uint8_t *buf);
/* Method to determine to smallest n-D bounding box containing the current selection */
typedef herr_t (*H5S_sel_bounds_func_t)(const H5S_t *space, hsize_t *start, hsize_t *end);
/* Method to determine if current selection is contiguous */
typedef htri_t (*H5S_sel_is_contiguous_func_t)(const H5S_t *space);
/* Method to determine if current selection is a single block */
typedef htri_t (*H5S_sel_is_single_func_t)(const H5S_t *space);
/* Method to determine if current selection is "regular" */
typedef htri_t (*H5S_sel_is_regular_func_t)(const H5S_t *space);
/* Method to initialize iterator for current selection */
typedef herr_t (*H5S_sel_iter_init_func_t)(H5S_sel_iter_t *sel_iter, const H5S_t *space);
/* Selection class information */
typedef struct {
H5S_sel_type type; /* Type of selection (all, none, points or hyperslab) */
/* Methods */
H5S_sel_copy_func_t copy; /* Method to make a copy of a selection */
H5S_sel_get_seq_list_func_t get_seq_list; /* Method to retrieve a list of offset/length sequences for selection */
H5S_sel_release_func_t release; /* Method to release current selection */
H5S_sel_is_valid_func_t is_valid; /* Method to determine if current selection is valid for dataspace */
H5S_sel_serial_size_func_t serial_size; /* Method to determine number of bytes required to store current selection */
H5S_sel_serialize_func_t serialize; /* Method to store current selection in "serialized" form (a byte sequence suitable for storing on disk) */
H5S_sel_deserialize_func_t deserialize; /* Method to store create selection from "serialized" form (a byte sequence suitable for storing on disk) */
H5S_sel_bounds_func_t bounds; /* Method to determine to smallest n-D bounding box containing the current selection */
H5S_sel_is_contiguous_func_t is_contiguous; /* Method to determine if current selection is contiguous */
H5S_sel_is_single_func_t is_single; /* Method to determine if current selection is a single block */
H5S_sel_is_regular_func_t is_regular; /* Method to determine if current selection is "regular" */
H5S_sel_iter_init_func_t iter_init; /* Method to initialize iterator for current selection */
} H5S_select_class_t;
/* Selection information object */
typedef struct {
const H5S_select_class_t *type; /* Pointer to selection's class info */
hssize_t offset[H5S_MAX_RANK]; /* Offset within the extent */
hsize_t num_elem; /* Number of elements in selection */
union {
H5S_pnt_list_t *pnt_lst; /* List of selected points (order is important) */
H5S_hyper_sel_t *hslab; /* Info about hyperslab selections */
} sel_info;
} H5S_select_t;
/* Main dataspace structure (typedef'd in H5Sprivate.h) */
struct H5S_t {
H5S_extent_t extent; /* Dataspace extent (must stay first) */
H5S_select_t select; /* Dataspace selection */
};
/* Selection iteration methods */
/* 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, hsize_t *coords);
/* Method to retrieve the current block of iterator for current selection */
typedef herr_t (*H5S_sel_iter_block_func_t)(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end);
/* 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 determine if there are more blocks left in the current selection */
typedef htri_t (*H5S_sel_iter_has_next_block_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 move selection iterator to the next block in the selection */
typedef herr_t (*H5S_sel_iter_next_block_func_t)(H5S_sel_iter_t *iter);
/* Method to release iterator for current selection */
typedef herr_t (*H5S_sel_iter_release_func_t)(H5S_sel_iter_t *iter);
/* Selection iteration class */
typedef struct H5S_sel_iter_class_t {
H5S_sel_type type; /* Type of selection (all, none, points or hyperslab) */
/* 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_block_func_t iter_block; /* Method to retrieve the current block 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_has_next_block_func_t iter_has_next_block; /* Method to query if there is another block left in the selection */
H5S_sel_iter_next_func_t iter_next; /* Method to move selection iterator to the next element in the selection */
H5S_sel_iter_next_block_func_t iter_next_block; /* Method to move selection iterator to the next block in the selection */
H5S_sel_iter_release_func_t iter_release; /* Method to release iterator for current selection */
} H5S_sel_iter_class_t;
/*
* All selection class methods.
*/
H5_DLLVAR const H5S_select_class_t H5S_sel_all[1];
/*
* Hyperslab selection class methods.
*/
H5_DLLVAR const H5S_select_class_t H5S_sel_hyper[1];
/*
* None selection class methods.
*/
H5_DLLVAR const H5S_select_class_t H5S_sel_none[1];
/*
* Pointer selection class methods.
*/
H5_DLLVAR const H5S_select_class_t H5S_sel_point[1];
/* Extent functions */
H5_DLL herr_t H5S_extent_release(H5S_extent_t *extent);
H5_DLL herr_t H5S_extent_copy(H5S_extent_t *dst, const H5S_extent_t *src);
/* Operations on selections */
/* Testing functions */
#ifdef H5S_TESTING
H5_DLL htri_t H5S_select_shape_same_test(hid_t sid1, hid_t sid2);
H5_DLL htri_t H5S_get_rebuild_status_test(hid_t space_id);
#endif /* H5S_TESTING */
#endif /*_H5Spkg_H*/
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