summaryrefslogtreecommitdiffstats
path: root/src/H5Tprivate.h
blob: 217a0d67af21fb87bd7a88ad6a067cde4802cdd9 (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * This file contains private information about the H5T module
 */
#ifndef _H5Tprivate_H
#define _H5Tprivate_H

/* Get package's public header */
#include "H5Tpublic.h"

/* Other public headers needed by this file */
#include "H5MMpublic.h"         /* Memory management                    */
#include "H5VLpublic.h"         /* VOL                                  */

/* Private headers needed by this file */
#include "H5private.h"		/* Generic Functions			*/
#include "H5Gprivate.h"		/* Groups 			  	*/
#include "H5Rprivate.h"		/* References				*/

/* Macro for size of temporary buffers to contain a single element */
#define H5T_ELEM_BUF_SIZE       256

/* If the module using this macro is allowed access to the private variables, access them directly */
#ifdef H5T_PACKAGE
#define H5T_GET_SIZE(T)                 ((T)->shared->size)
#define H5T_GET_SHARED(T)               ((T)->shared)
#define H5T_GET_MEMBER_OFFSET(T, I)     ((T)->u.compnd.memb[I].offset)
#define H5T_GET_MEMBER_SIZE(T, I)       ((T)->u.compnd.memb[I].shared->size)
#else /* H5T_PACKAGE */
#define H5T_GET_SIZE(T)                 (H5T_get_size(T))
#define H5T_GET_SHARED(T)               (H5T_get_shared(T))
#define H5T_GET_MEMBER_OFFSET(T, I)     (H5T_get_member_offset((T), (I)))
#define H5T_GET_MEMBER_SIZE(T, I)       (H5T_get_member_size((T), (I)))
#endif /* H5T_PACKAGE */

/* Forward references of package typedefs (declared in H5Tpkg.h) */
typedef struct H5T_t H5T_t;
typedef struct H5T_stats_t H5T_stats_t;
typedef struct H5T_path_t H5T_path_t;

/* How to copy a datatype */
typedef enum H5T_copy_t {
    H5T_COPY_TRANSIENT,
    H5T_COPY_ALL,
    H5T_COPY_REOPEN
} H5T_copy_t;

/* Location of datatype information */
typedef enum {
    H5T_LOC_BADLOC =   0,  /* invalid datatype location */
    H5T_LOC_MEMORY,        /* data stored in memory */
    H5T_LOC_DISK,          /* data stored on disk */
    H5T_LOC_MAXLOC         /* highest value (Invalid as true value) */
} H5T_loc_t;

/* VL allocation information */
typedef struct {
    H5MM_allocate_t alloc_func; /* Allocation function */
    void *alloc_info;           /* Allocation information */
    H5MM_free_t free_func;      /* Free function */
    void *free_info;            /* Free information */
} H5T_vlen_alloc_info_t;

/* Structure for conversion callback property */
typedef struct H5T_conv_cb_t {
    H5T_conv_except_func_t      func;
    void*                       user_data;
} H5T_conv_cb_t;

/* Values for the optimization of compound data reading and writing.  They indicate
 * whether the fields of the source and destination are subset of each other and
 * there is no conversion needed.
 */
typedef enum {
    H5T_SUBSET_BADVALUE = -1,   /* Invalid value */
    H5T_SUBSET_FALSE = 0,       /* Source and destination aren't subset of each other */
    H5T_SUBSET_SRC,             /* Source is the subset of dest and no conversion is needed */
    H5T_SUBSET_DST,             /* Dest is the subset of source and no conversion is needed */
    H5T_SUBSET_CAP              /* Must be the last value */
} H5T_subset_t;

typedef struct H5T_subset_info_t {
    H5T_subset_t    subset;     /* See above */
    size_t          copy_size;  /* Size in bytes, to copy for each element */
} H5T_subset_info_t;

/* Forward declarations for prototype arguments */
struct H5O_t;

/* The native endianess of the platform */
H5_DLLVAR H5T_order_t H5T_native_order_g;

/* Private functions */
H5_DLL herr_t H5TN_init_interface(void);
H5_DLL herr_t H5T_init(void);
H5_DLL H5T_t *H5T_copy(H5T_t *old_dt, H5T_copy_t method);
H5_DLL herr_t H5T_lock(H5T_t *dt, hbool_t immutable);
H5_DLL herr_t H5T_close(H5T_t *dt);
H5_DLL H5T_t *H5T_get_super(const H5T_t *dt);
H5_DLL H5T_class_t H5T_get_class(const H5T_t *dt, htri_t internal);
H5_DLL htri_t H5T_detect_class(const H5T_t *dt, H5T_class_t cls, hbool_t from_api);
H5_DLL size_t H5T_get_size(const H5T_t *dt);
H5_DLL int    H5T_cmp(const H5T_t *dt1, const H5T_t *dt2, hbool_t superset);
H5_DLL herr_t H5T_encode(H5T_t *obj, unsigned char *buf, size_t *nalloc);
H5_DLL H5T_t *H5T_decode(const unsigned char *buf);
H5_DLL herr_t H5T_debug(const H5T_t *dt, FILE * stream);
H5_DLL struct H5O_loc_t *H5T_oloc(H5T_t *dt);
H5_DLL H5G_name_t *H5T_nameof(H5T_t *dt);
H5_DLL htri_t H5T_is_immutable(const H5T_t *dt);
H5_DLL htri_t H5T_is_named(const H5T_t *dt);
H5_DLL htri_t H5T_is_relocatable(const H5T_t *dt);
H5_DLL H5T_path_t *H5T_path_find(const H5T_t *src, const H5T_t *dst,
    const char *name, H5T_conv_t func, hid_t dxpl_id, hbool_t is_api);
H5_DLL hbool_t H5T_path_noop(const H5T_path_t *p);
H5_DLL H5T_bkg_t H5T_path_bkg(const H5T_path_t *p);
H5_DLL H5T_subset_info_t *H5T_path_compound_subset(const H5T_path_t *p);
H5_DLL herr_t H5T_convert(H5T_path_t *tpath, hid_t src_id, hid_t dst_id,
    size_t nelmts, size_t buf_stride, size_t bkg_stride, void *buf, void *bkg,
    hid_t dset_xfer_plist);
H5_DLL herr_t H5T_vlen_reclaim(void *elem, hid_t type_id, unsigned ndim, const hsize_t *point, void *_op_data);
H5_DLL herr_t H5T_vlen_reclaim_elmt(void *elem, H5T_t *dt, hid_t dxpl_id);
H5_DLL herr_t H5T_vlen_get_alloc_info(hid_t dxpl_id, H5T_vlen_alloc_info_t **vl_alloc_info);
H5_DLL htri_t H5T_set_loc(H5T_t *dt, H5F_t *f, H5T_loc_t loc);
H5_DLL htri_t H5T_is_sensible(const H5T_t *dt);
H5_DLL uint32_t H5T_hash(H5F_t * file, const H5T_t *dt);
H5_DLL herr_t H5T_set_latest_version(H5T_t *dt);
H5_DLL herr_t H5T_patch_file(H5T_t *dt, H5F_t *f);
H5_DLL htri_t H5T_is_variable_str(const H5T_t *dt);
H5_DLL void * H5T_get_named_type(const H5T_t *dt);
H5_DLL hid_t H5VL_create_datatype(void *dt_obj, H5VL_t *vol_plugin, hbool_t app_ref);
H5_DLL herr_t H5T_set_vol_object(H5T_t *type, void *vol_obj);

/* Reference specific functions */
H5_DLL H5R_type_t H5T_get_ref_type(const H5T_t *dt);

/* Operations on named datatypes */
H5_DLL H5T_t *H5T_open(const H5G_loc_t *loc, hid_t dxpl_id);
H5_DLL htri_t H5T_committed(const H5T_t *type);
H5_DLL int H5T_link(const H5T_t *type, int adjust, hid_t dxpl_id);
H5_DLL herr_t H5T_update_shared(H5T_t *type);

/* Field functions (for both compound & enumerated types) */
H5_DLL int H5T_get_nmembers(const H5T_t *dt);
H5_DLL H5T_t *H5T_get_member_type(const H5T_t *dt, unsigned membno, H5T_copy_t method);
H5_DLL size_t H5T_get_member_offset(const H5T_t *dt, unsigned membno);

/* Atomic functions */
H5_DLL H5T_order_t H5T_get_order(const H5T_t *dt);
H5_DLL size_t H5T_get_precision(const H5T_t *dt);
H5_DLL int H5T_get_offset(const H5T_t *dt);

/* Fixed-point functions */
H5_DLL H5T_sign_t H5T_get_sign(H5T_t const *dt);

#endif /* _H5Tprivate_H */