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
|
/*
* Copyright (C) 1997 National Center for Supercomputing Applications
* All rights reserved.
*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Friday, September 19, 1997
*
*/
#define H5G_PACKAGE
#include <H5private.h>
#include <H5ACprivate.h>
#include <H5Eprivate.h>
#include <H5Gpkg.h>
#include <H5HLprivate.h>
#include <H5MMprivate.h>
#include <H5Oprivate.h>
#define PABLO_MASK H5G_stab_mask
static hbool_t interface_initialize_g = FALSE;
#define INTERFACE_INIT NULL
/*-------------------------------------------------------------------------
* Function: H5G_stab_create
*
* Purpose: Creates a new empty symbol table (object header, name heap,
* and B-tree). The caller can specify an initial size for the
* name heap. The object header of the group is opened for
* write access.
*
* In order for the B-tree to operate correctly, the first
* item in the heap is the empty string, and must appear at
* heap offset zero.
*
* Errors:
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Aug 1 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_stab_create(H5F_t *f, size_t init, H5G_entry_t *self/*out*/)
{
size_t name; /*offset of "" name */
H5O_stab_t stab; /*symbol table message */
FUNC_ENTER(H5G_stab_create, FAIL);
/*
* Check arguments.
*/
assert(f);
assert(self);
init = MAX(init, H5HL_SIZEOF_FREE(f) + 2);
/* Create symbol table private heap */
if (H5HL_create(f, init, &(stab.heap_addr)/*out*/)<0) {
HRETURN_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create heap");
}
name = H5HL_insert(f, &(stab.heap_addr), 1, "");
if ((size_t)(-1)==name) {
HRETURN_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't initialize heap");
}
/*
* B-tree's won't work if the first name isn't at the beginning
* of the heap.
*/
assert(0 == name);
/* Create the B-tree */
if (H5B_create(f, H5B_SNODE, NULL, &(stab.btree_addr) /*out */ ) < 0) {
HRETURN_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create B-tree");
}
/*
* Create symbol table object header. It has a zero link count
* since nothing refers to it yet. The link count will be
* incremented if the object is added to the group directed graph.
*/
if (H5O_create(f, 4 + 2 * H5F_SIZEOF_ADDR(f), self /*out */ ) < 0) {
HRETURN_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create header");
}
/*
* Insert the symbol table message into the object header and the symbol
* table entry.
*/
if (H5O_modify(self, H5O_STAB, H5O_NEW_MESG, H5O_FLAG_CONSTANT, &stab)<0) {
H5O_close(self);
HRETURN_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create message");
}
self->cache.stab.btree_addr = stab.btree_addr;
self->cache.stab.heap_addr = stab.heap_addr;
self->type = H5G_CACHED_STAB;
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_stab_find
*
* Purpose: Finds a symbol named NAME in the symbol table whose
* description is stored in GRP_ENT in file F and returns its
* symbol table entry through OBJ_ENT (which is optional).
*
* Errors:
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Aug 1 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_stab_find(H5G_entry_t *grp_ent, const char *name,
H5G_entry_t *obj_ent/*out*/)
{
H5G_bt_ud1_t udata; /*data to pass through B-tree */
H5O_stab_t stab; /*symbol table message */
FUNC_ENTER(H5G_stab_find, FAIL);
/* Check arguments */
assert(grp_ent);
assert(grp_ent->file);
assert(name && *name);
/* set up the udata */
if (NULL == H5O_read(grp_ent, H5O_STAB, 0, &stab)) {
HRETURN_ERROR(H5E_SYM, H5E_BADMESG, FAIL, "can't read message");
}
udata.operation = H5G_OPER_FIND;
udata.name = name;
udata.heap_addr = stab.heap_addr;
/* search the B-tree */
if (H5B_find(grp_ent->file, H5B_SNODE, &(stab.btree_addr), &udata) < 0) {
HRETURN_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "not found");
}
if (obj_ent) *obj_ent = udata.ent;
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_stab_insert
*
* Purpose: Insert a new symbol into the table described by GRP_ENT in
* file F. The name of the new symbol is NAME and its symbol
* table entry is OBJ_ENT.
*
* Errors:
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Aug 1 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_stab_insert(H5G_entry_t *grp_ent, const char *name, H5G_entry_t *obj_ent)
{
H5O_stab_t stab; /*symbol table message */
H5G_bt_ud1_t udata; /*data to pass through B-tree */
FUNC_ENTER(H5G_stab_insert, FAIL);
/* check arguments */
assert(grp_ent && grp_ent->file);
assert(name && *name);
assert(obj_ent && obj_ent->file);
assert(grp_ent->file->shared == obj_ent->file->shared);
/* initialize data to pass through B-tree */
if (NULL == H5O_read(grp_ent, H5O_STAB, 0, &stab)) {
HRETURN_ERROR(H5E_SYM, H5E_BADMESG, FAIL, "not a symbol table");
}
udata.operation = H5G_OPER_INSERT;
udata.name = name;
udata.heap_addr = stab.heap_addr;
udata.ent = *obj_ent;
/* insert */
if (H5B_insert(grp_ent->file, H5B_SNODE, &(stab.btree_addr), &udata) < 0) {
HRETURN_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "unable to insert entry");
}
/* update the name offset in the entry */
obj_ent->name_off = udata.ent.name_off;
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_stab_remove
*
* Purpose: Remove NAME from a symbol table.
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* Thursday, September 17, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_stab_remove(H5G_entry_t *grp_ent, const char *name)
{
H5O_stab_t stab; /*symbol table message */
H5G_bt_ud1_t udata; /*data to pass through B-tree */
FUNC_ENTER(H5G_stab_remove, FAIL);
assert(grp_ent && grp_ent->file);
assert(name && *name);
/* initialize data to pass through B-tree */
if (NULL==H5O_read(grp_ent, H5O_STAB, 0, &stab)) {
HRETURN_ERROR(H5E_SYM, H5E_BADMESG, FAIL, "not a symbol table");
}
udata.operation = H5G_OPER_REMOVE;
udata.name = name;
udata.heap_addr = stab.heap_addr;
HDmemset(&(udata.ent), 0, sizeof(udata.ent));
/* remove */
if (H5B_remove(grp_ent->file, H5B_SNODE, &(stab.btree_addr), &udata)<0) {
HRETURN_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to remove entry");
}
FUNC_LEAVE(SUCCEED);
}
|
