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
|
/*-------------------------------------------------------------------------
* Copyright (C) 1997 National Center for Supercomputing Applications.
* All rights reserved.
*
*-------------------------------------------------------------------------
*
* Created: H5Gprivate.h
* Jul 11 1997
* Robb Matzke <matzke@llnl.gov>
*
* Purpose: Library-visible declarations.
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
#ifndef _H5Gprivate_H
#define _H5Gprivate_H
#include <H5Gpublic.h>
/* Private headers needed by this file */
#include <H5private.h>
#include <H5Bprivate.h>
#include <H5Fprivate.h>
#define H5G_NODE_MAGIC "SNOD" /*symbol table node magic number */
#define H5G_NODE_SIZEOF_MAGIC 4 /*sizeof symbol node magic number */
#define H5G_new_entry() H5MM_xcalloc (1, sizeof(H5G_entry_t))
/*
* The disk size for a symbol table entry...
*/
#define H5G_SIZEOF_ENTRY(F) \
(H5F_SIZEOF_OFFSET(F) + /*offset of name into heap */ \
H5F_SIZEOF_OFFSET(F) + /*address of object header */ \
4 + /*entry type */ \
24) /*scratch pad space */
/*
* Various types of object header information can be cached in a symbol
* table entry (it's normal home is the object header to which the entry
* points). This datatype determines what (if anything) is cached in the
* symbol table entry.
*/
typedef enum H5G_type_t {
H5G_NOTHING_CACHED =0, /*nothing is cached, must be 0 */
H5G_CACHED_SDATA =1, /*simple dataset, `sdata' */
H5G_CACHED_STAB =2 /*symbol table, `stab' */
} H5G_type_t;
/*
* A symbol table entry caches these parameters from object header
* messages...
*/
typedef union H5G_cache_t {
struct {
struct {
uint8 length;
uint8 arch;
uint16 type;
} nt ; /*number type */
uint32 ndim; /*number of dimensions */
uint32 dim[4]; /*dimension sizes */
} sdata;
struct {
haddr_t btree_addr; /*file address of symbol table B-tree */
haddr_t heap_addr; /*file address of stab name heap */
} stab;
} H5G_cache_t;
/*
* An H5G_shadow_t is the struct used to describe object headers that
* are currently open for modification. It's contents is not
* important outside H5G.
*/
typedef struct H5G_shadow_t H5G_shadow_t;
/*
* A symbol table entry. The two important fields are `name_off' and
* `header'. The remaining fields are used for caching information that
* also appears in the object header to which this symbol table entry
* points.
*/
typedef struct H5G_entry_t {
hbool_t dirty; /*entry out-of-date? */
off_t name_off; /*offset of name within name heap */
haddr_t header; /*file address of object header */
H5G_type_t type; /*type of information cached */
H5G_cache_t cache; /*cached data from object header */
H5G_shadow_t *shadow; /*optional ptr to the shadow */
} H5G_entry_t;
/*
* Library prototypes...
*/
herr_t H5G_new (hdf5_file_t *f, H5G_entry_t *cwd, H5G_entry_t *dir_ent,
const char *name, size_t size_hint, H5G_entry_t *ent);
H5G_entry_t *H5G_open (hdf5_file_t *f, H5G_entry_t *cwd, const char *name);
herr_t H5G_close (hdf5_file_t *f, H5G_entry_t *ent);
herr_t H5G_find (hdf5_file_t *f, H5G_entry_t *cwd, H5G_entry_t *dir_ent,
const char *name, H5G_entry_t *ent);
herr_t H5G_insert (hdf5_file_t *f, H5G_entry_t *cwd, H5G_entry_t *dir_ent,
const char *name, H5G_entry_t *ent);
herr_t H5G_set_root (hdf5_file_t *f, const char *name, H5G_entry_t *ent);
herr_t H5G_encode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent);
herr_t H5G_decode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent);
herr_t H5G_debug (hdf5_file_t *f, H5G_entry_t *ent, FILE *stream, intn indent,
intn fwidth);
herr_t H5G_node_debug (hdf5_file_t *f, haddr_t addr, FILE *stream, intn indent,
intn fwidth, haddr_t heap);
#endif
|
