summaryrefslogtreecommitdiffstats
path: root/src/H5Spkg.h
blob: 9d104606d793c8356b0f55a89dc74344e2f71873 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * 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"

/* Number of reserved IDs in ID group */
#define H5S_RESERVED_ATOMS  2

/* Flags to indicate special dataspace features are active */
#define H5S_VALID_MAX	0x01
#define H5S_VALID_PERM	0x02

/* Flags for "get_seq_list" methods */
#define H5S_GET_SEQ_LIST_SORTED         0x0001

/* 
 * Dataspace extent information
 */
/* Simple extent container */
typedef struct H5S_simple_t {
    unsigned rank;         /* Number of dimensions */
    hsize_t *size;      /* Current size of the dimensions */
    hsize_t *max;       /* Maximum size of the dimensions */
#ifdef LATER
    hsize_t *perm;      /* Dimension permutation array */
#endif /* LATER */
} H5S_simple_t;

/* Extent container */
typedef struct {
    H5S_class_t	type;   /* Type of extent */
    hsize_t nelem;      /* Number of elements in extent */
    union {
        H5S_simple_t	simple;	/* Simple dimensionality information  */
    } u;
} H5S_extent_t;

/* 
 * Dataspace selection information
 */
/* Node in point selection list (typedef'd in H5Sprivate.h) */
struct H5S_pnt_node_t {
    hssize_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 {
    hssize_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 one dimension in a hyperslab selection */
struct H5S_hyper_dim_t {
    hssize_t start;
    hsize_t  stride;
    hsize_t  count;
    hsize_t  block;
};

/* Information about new-style hyperslab selection */
typedef struct {
    H5S_hyper_dim_t *diminfo;    /* ->[rank] of per-dim selection info */
	/* diminfo only points to one array, which holds the information
	 * for one hyperslab selection. Perhaps this might need to be
	 * expanded into a list of arrays when the H5Sselect_hyperslab's
	 * restriction to H5S_SELECT_SET is removed. */
    H5S_hyper_dim_t *app_diminfo;/* ->[rank] of per-dim selection info */
	/* '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 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 elem_size, size_t maxseq, size_t maxbytes,
    size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);
/* Method to compute number of elements in current selection */
typedef hsize_t (*H5S_sel_get_npoints_func_t)(const H5S_t *space);
/* 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 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, size_t elmt_size);

/* Selection information object */
typedef struct {
    H5S_sel_type type;  /* Type of selection (list of points or hyperslabs) */
    hssize_t *offset;   /* Offset within the extent (NULL means a 0 offset) */
    hsize_t *order;     /* Selection order.  (NULL means a specific ordering of points) */
    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 new-style hyperslab selections */
    } sel_info;
    H5S_sel_get_seq_list_func_t get_seq_list;   /* Method to retrieve a list of offset/length sequences for selection */
    H5S_sel_get_npoints_func_t get_npoints;     /* Method to compute number of elements in current 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_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_t;

/* Main dataspace structure (typedef'd in H5Sprivate.h) */
struct H5S_t {
    H5S_extent_t extent;        /* Dataspace extent */
    H5S_select_t select;		/* Dataspace selection */
};

/* Extent functions */
H5_DLL herr_t H5S_close_simple(H5S_simple_t *simple);
H5_DLL herr_t H5S_release_simple(H5S_simple_t *simple);
H5_DLL herr_t H5S_extent_copy(H5S_extent_t *dst, const H5S_extent_t *src);

/* Operations on selections */
H5_DLL herr_t H5S_select_copy(H5S_t *dst, const H5S_t *src);
H5_DLL htri_t H5S_select_shape_same(const H5S_t *space1, const H5S_t *space2);

/* Point selection iterator functions */
H5_DLL herr_t H5S_point_iter_init(H5S_sel_iter_t *iter, const H5S_t *space, size_t elmt_size);
H5_DLL herr_t H5S_point_iter_coords(const H5S_sel_iter_t *iter, hssize_t *coords);
H5_DLL hsize_t H5S_point_iter_nelmts(const H5S_sel_iter_t *iter);
H5_DLL herr_t H5S_point_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
H5_DLL herr_t H5S_point_iter_release(H5S_sel_iter_t *sel_iter);

/* Point selection functions */
H5_DLL herr_t H5S_point_release(H5S_t *space);
H5_DLL hsize_t H5S_point_npoints(const H5S_t *space);
H5_DLL herr_t H5S_point_copy(H5S_t *dst, const H5S_t *src);
H5_DLL htri_t H5S_point_is_valid(const H5S_t *space);
H5_DLL hssize_t H5S_point_serial_size(const H5S_t *space);
H5_DLL herr_t H5S_point_serialize(const H5S_t *space, uint8_t *buf);
H5_DLL herr_t H5S_point_deserialize(H5S_t *space, const uint8_t *buf);
H5_DLL herr_t H5S_point_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
H5_DLL htri_t H5S_point_is_contiguous(const H5S_t *space);
H5_DLL htri_t H5S_point_is_single(const H5S_t *space);
H5_DLL htri_t H5S_point_is_regular(const H5S_t *space);
H5_DLL herr_t H5S_point_get_seq_list(const H5S_t *space, unsigned flags,
    H5S_sel_iter_t *iter, size_t elem_size, size_t maxseq, size_t maxbytes,
    size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);

/* "All" selection iterator  functions */
H5_DLL herr_t H5S_all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space, size_t elmt_size);
H5_DLL herr_t H5S_all_iter_coords(const H5S_sel_iter_t *iter, hssize_t *coords);
H5_DLL hsize_t H5S_all_iter_nelmts(const H5S_sel_iter_t *iter);
H5_DLL herr_t H5S_all_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
H5_DLL herr_t H5S_all_iter_release(H5S_sel_iter_t *sel_iter);

/* "All" selection functions */
H5_DLL herr_t H5S_all_release(H5S_t *space);
H5_DLL hsize_t H5S_all_npoints(const H5S_t *space);
H5_DLL htri_t H5S_all_is_valid(const H5S_t *space);
H5_DLL hssize_t H5S_all_serial_size(const H5S_t *space);
H5_DLL herr_t H5S_all_serialize(const H5S_t *space, uint8_t *buf);
H5_DLL herr_t H5S_all_deserialize(H5S_t *space, const uint8_t *buf);
H5_DLL herr_t H5S_all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
H5_DLL htri_t H5S_all_is_contiguous(const H5S_t *space);
H5_DLL htri_t H5S_all_is_single(const H5S_t *space);
H5_DLL htri_t H5S_all_is_regular(const H5S_t *space);
H5_DLL herr_t H5S_all_get_seq_list(const H5S_t *space, unsigned flags,
    H5S_sel_iter_t *iter, size_t elem_size, size_t maxseq, size_t maxbytes,
    size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);

/* Hyperslab selection iterator functions */
H5_DLL herr_t H5S_hyper_iter_init(H5S_sel_iter_t *iter, const H5S_t *space, size_t elmt_size);
H5_DLL herr_t H5S_hyper_iter_coords(const H5S_sel_iter_t *iter, hssize_t *coords);
H5_DLL hsize_t H5S_hyper_iter_nelmts(const H5S_sel_iter_t *iter);
H5_DLL herr_t H5S_hyper_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
H5_DLL herr_t H5S_hyper_iter_release(H5S_sel_iter_t *sel_iter);

/* Hyperslab selection functions */
H5_DLL herr_t H5S_hyper_release(H5S_t *space);
H5_DLL hsize_t H5S_hyper_npoints(const H5S_t *space);
H5_DLL herr_t H5S_hyper_copy(H5S_t *dst, const H5S_t *src);
H5_DLL htri_t H5S_hyper_is_valid(const H5S_t *space);
H5_DLL hssize_t H5S_hyper_serial_size(const H5S_t *space);
H5_DLL herr_t H5S_hyper_serialize(const H5S_t *space, uint8_t *buf);
H5_DLL herr_t H5S_hyper_deserialize(H5S_t *space, const uint8_t *buf);
H5_DLL herr_t H5S_hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
H5_DLL htri_t H5S_hyper_is_contiguous(const H5S_t *space);
H5_DLL htri_t H5S_hyper_is_single(const H5S_t *space);
H5_DLL htri_t H5S_hyper_is_regular(const H5S_t *space);
H5_DLL herr_t H5S_hyper_get_seq_list(const H5S_t *space, unsigned flags,
    H5S_sel_iter_t *iter, size_t elem_size, size_t maxseq, size_t maxbytes,
    size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);

/* "None" selection iterator functions */
H5_DLL herr_t H5S_none_iter_init(H5S_sel_iter_t *iter, const H5S_t *space, size_t elmt_size);
H5_DLL herr_t H5S_none_iter_coords(const H5S_sel_iter_t *iter, hssize_t *coords);
H5_DLL hsize_t H5S_none_iter_nelmts(const H5S_sel_iter_t *iter);
H5_DLL herr_t H5S_none_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem);
H5_DLL herr_t H5S_none_iter_release(H5S_sel_iter_t *sel_iter);

/* "None" selection functions */
H5_DLL herr_t H5S_none_release(H5S_t *space);
H5_DLL hsize_t H5S_none_npoints(const H5S_t *space);
H5_DLL htri_t H5S_none_is_valid(const H5S_t *space);
H5_DLL hssize_t H5S_none_serial_size(const H5S_t *space);
H5_DLL herr_t H5S_none_serialize(const H5S_t *space, uint8_t *buf);
H5_DLL herr_t H5S_none_deserialize(H5S_t *space, const uint8_t *buf);
H5_DLL herr_t H5S_none_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
H5_DLL htri_t H5S_none_is_contiguous(const H5S_t *space);
H5_DLL htri_t H5S_none_is_single(const H5S_t *space);
H5_DLL htri_t H5S_none_is_regular(const H5S_t *space);
H5_DLL herr_t H5S_none_get_seq_list(const H5S_t *space, unsigned flags,
    H5S_sel_iter_t *iter, size_t elem_size, size_t maxseq, size_t maxbytes,
    size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len);

#ifdef H5_HAVE_PARALLEL
/* MPI-IO function to read directly from app buffer to file rky980813 */
H5_DLL herr_t H5S_mpio_spaces_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*/);

/* MPI-IO function to write directly from app buffer to file rky980813 */
H5_DLL herr_t H5S_mpio_spaces_write(H5F_t *f,
				    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,
				    const void *buf);

/* MPI-IO function to check if a direct I/O transfer is possible between
 * memory and the file */
H5_DLL htri_t H5S_mpio_opt_possible(const H5S_t *mem_space,
                                     const H5S_t *file_space, const unsigned flags);

#endif /* H5_HAVE_PARALLEL */

#endif /*_H5Spkg_H*/