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
|
/*
* 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 <H5Gprivate.h>
#define H5G_NODE_VERS 1 /*symbol table node version number */
#define H5G_SIZE_HINT 1024 /*default root dir size hint */
#define H5G_NODE_K(F) ((F)->file_create_parms.sym_leaf_k)
#define H5G_NODE_SIZEOF_HDR(F) (H5G_NODE_SIZEOF_MAGIC + 4)
#define H5G_DEFAULT_ROOT_SIZE 32
/*
* A shadow is a copy of a symbol table entry which corresponds to an
* `open' object. Shadows are necessary because normal symbol table
* entries can be preempted from the main cache. The `shadow' field
* of the `entry' points to the beginning of the shadow just like the
* shadow field from symbol table entries in H5G_node_t.
*/
struct H5G_shadow_t {
char *name; /*name for this entry */
haddr_t dir_addr; /*hdr addr for dir containing shadow */
uintn nrefs; /*reference counter */
H5G_entry_t entry; /*local copy of symbol table entry */
H5G_entry_t *main; /*main entry in stab node if cached */
struct H5G_shadow_t *next; /*next shadow for same symbol table */
struct H5G_shadow_t *prev; /*previous shadow for same symbol table */
};
/*
* 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 directory.
*/
typedef struct H5G_node_t {
int 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 {
off_t offset; /*offset into heap for name */
} H5G_node_key_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 dir_addr; /*symbol table header address */
haddr_t heap_addr; /*symbol table heap address */
/* downward for INSERT */
H5G_entry_t entry; /*entry to insert into table */
/* upward for FIND */
H5G_entry_t *entry_ptr; /*ptr into cached symbol table node */
} H5G_bt_ud1_t;
/*
* Data exchange structure to pass through the B-tree layer for the
* H5B_list function.
*/
typedef struct H5G_bt_ud2_t {
/* downward */
H5G_entry_t *entry; /*array of entries, alloc'd by caller */
char **name; /*array of string ptrs, allocd by caller*/
intn maxentries; /*size of the ADDR and NAME arrays */
haddr_t dir_addr; /*symbol table header address */
haddr_t heap_addr; /*heap address */
/* upward */
intn nsyms; /*num. symbols processed */
} H5G_bt_ud2_t;
/*
* This is the class identifier to give to the B-tree functions.
*/
extern H5B_class_t H5B_SNODE[1];
/*
* This struct passes information through the H5AC layer.
*/
typedef struct H5G_ac_ud1_t {
haddr_t heap_addr;
haddr_t dir_addr;
} H5G_ac_ud1_t;
/*
* Functions that understand symbol tables but not directories. The
* functions that understand directories are exported to the rest of
* the library and appear in H5Gprivate.h.
*/
haddr_t H5G_stab_new (hdf5_file_t *f, H5G_entry_t *self, size_t init);
H5G_entry_t *H5G_stab_find (hdf5_file_t *f, haddr_t addr, H5G_entry_t *self,
const char *name);
herr_t H5G_stab_insert (hdf5_file_t *f, H5G_entry_t *self, const char *name,
H5G_entry_t *ent);
intn H5G_stab_list (hdf5_file_t *f, H5G_entry_t *self, intn maxentries,
char *names[], H5G_entry_t entries[]);
/*
* Functions that understand shadow entries.
*/
herr_t H5G_shadow_sync (H5G_entry_t *ent);
H5G_entry_t *H5G_shadow_open (hdf5_file_t *f, H5G_entry_t *dir,
H5G_entry_t *ent);
herr_t H5G_shadow_close (hdf5_file_t *f, H5G_entry_t *ent);
hbool_t H5G_shadow_p (H5G_entry_t *ent);
herr_t H5G_shadow_dissociate (H5G_entry_t *ent);
herr_t H5G_shadow_assoc_node (hdf5_file_t *f, H5G_node_t *sym,
H5G_entry_t *self);
H5G_shadow_t *H5G_shadow_list (haddr_t stab_header_addr);
/*
* Functions that understand symbol table entries.
*/
herr_t H5G_decode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n);
herr_t H5G_encode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n);
#endif
|
