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
|
/*
* Copyright (C) 1997 National Center for Supercomputing Applications.
* All rights reserved.
*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Thursday, September 18, 1997
*
* Purpose: This file contains declarations which are visible
* only within the H5G package. Source files outside the
* H5G package should include H5Gprivate.h instead.
*/
#ifndef H5G_PACKAGE
#error "Do not include this file outside the H5G package!"
#endif
#ifndef _H5Gpkg_H
#define _H5Gpkg_H
#include <H5ACprivate.h>
#include <H5Gprivate.h>
#define H5G_NODE_VERS 1 /*symbol table node version number */
#define H5G_SIZE_HINT 1024 /*default root grp size hint */
#define H5G_NODE_K(F) ((unsigned)((F)->shared->create_parms.sym_leaf_k))
#define H5G_NODE_SIZEOF_HDR(F) (H5G_NODE_SIZEOF_MAGIC + 4)
#define H5G_DEFAULT_ROOT_SIZE 32
/*
* A symbol table node is a collection of symbol table entries. It can
* be thought of as the lowest level of the B-link tree that points to
* a collection of symbol table entries that belong to a specific symbol
* table or group.
*/
typedef struct H5G_node_t {
hbool_t dirty; /*has cache been modified? */
int nsyms; /*number of symbols */
H5G_entry_t *entry; /*array of symbol table entries */
} H5G_node_t;
/*
* Each key field of the B-link tree that points to symbol table
* nodes consists of this structure...
*/
typedef struct H5G_node_key_t {
size_t offset; /*offset into heap for name */
} H5G_node_key_t;
/*
* A group handle passed around through layers of the library within and
* above the H5G layer.
*/
struct H5G_t {
int nref; /*open reference count */
H5G_entry_t ent; /*info about the group */
};
/*
* Each file has a stack of open groups with the latest entry on the
* stack the current working group. If the stack is empty then the
* current working group is the root object.
*/
typedef struct H5G_cwgstk_t {
H5G_t *grp; /*a handle to an open group */
struct H5G_cwgstk_t *next; /*next item (earlier) on stack */
} H5G_cwgstk_t;
/*
* These operations can be passed down from the H5G_stab layer to the
* H5G_node layer through the B-tree layer.
*/
typedef enum H5G_oper_t {
H5G_OPER_FIND = 0, /*find a symbol */
H5G_OPER_INSERT = 1 /*insert a new symbol */
} H5G_oper_t;
/*
* Data exchange structure for symbol table nodes. This structure is
* passed through the B-link tree layer to the methods for the objects
* to which the B-link tree points.
*/
typedef struct H5G_bt_ud1_t {
/* downward */
H5G_oper_t operation; /*what operation to perform */
const char *name; /*points to temporary memory */
haddr_t heap_addr; /*symbol table heap address */
/* downward for INSERT, upward for FIND */
H5G_entry_t ent; /*entry to insert into table */
} H5G_bt_ud1_t;
/*
* Data exchange structure to pass through the B-tree layer for the
* H5B_iterate function.
*/
typedef struct H5G_bt_ud2_t {
/* downward */
hid_t group_id; /*group id to pass to iteration operator */
struct H5G_t *group; /*the group to which group_id points */
int skip; /*initial entries to skip */
H5G_iterate_t op; /*iteration operator */
void *op_data; /*user-defined operator data */
/* upward */
} H5G_bt_ud2_t;
/*
* This is the class identifier to give to the B-tree functions.
*/
extern H5B_class_t H5B_SNODE[1];
/* The cache subclass */
extern const H5AC_class_t H5AC_SNODE[1];
/*
* Functions that understand symbol tables but not names. The
* functions that understand names are exported to the rest of
* the library and appear in H5Gprivate.h.
*/
herr_t H5G_stab_create (H5F_t *f, size_t size_hint, H5G_entry_t *ent/*out*/);
herr_t H5G_stab_find (H5G_entry_t *grp_ent, const char *name,
H5G_entry_t *obj_ent/*out*/);
herr_t H5G_stab_insert (H5G_entry_t *grp_ent, const char *name,
H5G_entry_t *obj_ent);
/*
* Functions that understand symbol table entries.
*/
herr_t H5G_ent_decode_vec (H5F_t *f, const uint8 **pp, H5G_entry_t *ent,
intn n);
herr_t H5G_ent_encode_vec (H5F_t *f, uint8 **pp, H5G_entry_t *ent, intn n);
#endif
|
