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
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Cprefetched.c
*
* Purpose: Metadata cache prefetched entry callbacks
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Cmodule.h" /* This source code file is part of the H5C module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5ACprivate.h" /* Metadata Cache */
#include "H5Cpkg.h" /* Cache */
#include "H5Eprivate.h" /* Error Handling */
#include "H5Fprivate.h" /* Files */
#include "H5FLprivate.h" /* Free Lists */
#include "H5MMprivate.h" /* Memory Management */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
/****************************************************************************
*
* Declarations for prefetched cache entry callbacks.
*
****************************************************************************/
static herr_t H5C__prefetched_entry_get_initial_load_size(void *udata_ptr, size_t *image_len_ptr);
static herr_t H5C__prefetched_entry_get_final_load_size(const void *image_ptr, size_t image_len,
void *udata_ptr, size_t *actual_len_ptr);
static htri_t H5C__prefetched_entry_verify_chksum(const void *image_ptr, size_t len, void *udata_ptr);
static void *H5C__prefetched_entry_deserialize(const void *image_ptr, size_t len, void *udata,
hbool_t *dirty_ptr);
static herr_t H5C__prefetched_entry_image_len(const void *thing, size_t *image_len_ptr);
static herr_t H5C__prefetched_entry_pre_serialize(H5F_t *f, void *thing, haddr_t addr, size_t len,
haddr_t *new_addr_ptr, size_t *new_len_ptr,
unsigned *flags_ptr);
static herr_t H5C__prefetched_entry_serialize(const H5F_t *f, void *image_ptr, size_t len, void *thing);
static herr_t H5C__prefetched_entry_notify(H5C_notify_action_t action, void *thing);
static herr_t H5C__prefetched_entry_free_icr(void *thing);
static herr_t H5C__prefetched_entry_fsf_size(const void *thing, hsize_t *fsf_size_ptr);
/*********************/
/* Package Variables */
/*********************/
/* Declare external the free list for H5C_cache_entry_t's */
H5FL_EXTERN(H5C_cache_entry_t);
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
const H5AC_class_t H5AC_PREFETCHED_ENTRY[1] = {{
/* id = */ H5AC_PREFETCHED_ENTRY_ID,
/* name = */ "prefetched entry",
/* mem_type = */ H5FD_MEM_DEFAULT, /* value doesn't matter */
/* flags = */ H5AC__CLASS_NO_FLAGS_SET,
/* get_initial_load_size = */ H5C__prefetched_entry_get_initial_load_size,
/* get_final_load_size = */ H5C__prefetched_entry_get_final_load_size,
/* verify_chksum = */ H5C__prefetched_entry_verify_chksum,
/* deserialize = */ H5C__prefetched_entry_deserialize,
/* image_len = */ H5C__prefetched_entry_image_len,
/* pre_serialize = */ H5C__prefetched_entry_pre_serialize,
/* serialize = */ H5C__prefetched_entry_serialize,
/* notify = */ H5C__prefetched_entry_notify,
/* free_icr = */ H5C__prefetched_entry_free_icr,
/* fsf_size = */ H5C__prefetched_entry_fsf_size,
}};
/***************************************************************************
* With two exceptions, these functions should never be called, and thus
* there is little point in documenting them separately as they all simply
* throw an error.
*
* See header comments for the two exceptions (free_icr and notify).
*
* JRM - 8/13/15
*
***************************************************************************/
static herr_t
H5C__prefetched_entry_get_initial_load_size(void H5_ATTR_UNUSED *udata_ptr,
size_t H5_ATTR_UNUSED *image_len_ptr)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(FAIL)
} /* end H5C__prefetched_entry_get_initial_load_size() */
static herr_t
H5C__prefetched_entry_get_final_load_size(const void H5_ATTR_UNUSED *image_ptr,
size_t H5_ATTR_UNUSED image_len, void H5_ATTR_UNUSED *udata_ptr,
size_t H5_ATTR_UNUSED *actual_len_ptr)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(FAIL)
} /* end H5C__prefetched_entry_get_final_load_size() */
static htri_t
H5C__prefetched_entry_verify_chksum(const void H5_ATTR_UNUSED *image_ptr, size_t H5_ATTR_UNUSED len,
void H5_ATTR_UNUSED *udata_ptr)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(FAIL)
} /* end H5C__prefetched_verify_chksum() */
static void *
H5C__prefetched_entry_deserialize(const void H5_ATTR_UNUSED *image_ptr, size_t H5_ATTR_UNUSED len,
void H5_ATTR_UNUSED *udata, hbool_t H5_ATTR_UNUSED *dirty_ptr)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(NULL)
} /* end H5C__prefetched_entry_deserialize() */
static herr_t
H5C__prefetched_entry_image_len(const void H5_ATTR_UNUSED *thing, size_t H5_ATTR_UNUSED *image_len_ptr)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(FAIL)
} /* end H5C__prefetched_entry_image_len() */
static herr_t
H5C__prefetched_entry_pre_serialize(H5F_t H5_ATTR_UNUSED *f, void H5_ATTR_UNUSED *thing,
haddr_t H5_ATTR_UNUSED addr, size_t H5_ATTR_UNUSED len,
haddr_t H5_ATTR_UNUSED *new_addr_ptr, size_t H5_ATTR_UNUSED *new_len_ptr,
unsigned H5_ATTR_UNUSED *flags_ptr)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(FAIL)
} /* end H5C__prefetched_entry_pre_serialize() */
static herr_t
H5C__prefetched_entry_serialize(const H5F_t H5_ATTR_UNUSED *f, void H5_ATTR_UNUSED *image_ptr,
size_t H5_ATTR_UNUSED len, void H5_ATTR_UNUSED *thing)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(FAIL)
} /* end H5C__prefetched_entry_serialize() */
/*-------------------------------------------------------------------------
* Function: H5C__prefetched_entry_notify
*
* Purpose: On H5AC_NOTIFY_ACTION_BEFORE_EVICT, check to see if the
* target entry is a child in a flush dependency relationship.
* If it is, destroy that flush dependency relationship.
*
* Ignore on all other notifications.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 8/13/15
*
*-------------------------------------------------------------------------
*/
static herr_t
H5C__prefetched_entry_notify(H5C_notify_action_t action, void *_thing)
{
H5C_cache_entry_t *entry_ptr = (H5C_cache_entry_t *)_thing;
unsigned u;
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
/* Sanity checks */
assert(entry_ptr);
assert(entry_ptr->prefetched);
switch (action) {
case H5C_NOTIFY_ACTION_AFTER_INSERT:
case H5C_NOTIFY_ACTION_AFTER_LOAD:
case H5C_NOTIFY_ACTION_AFTER_FLUSH:
case H5C_NOTIFY_ACTION_ENTRY_DIRTIED:
case H5C_NOTIFY_ACTION_ENTRY_CLEANED:
case H5C_NOTIFY_ACTION_CHILD_DIRTIED:
case H5C_NOTIFY_ACTION_CHILD_CLEANED:
case H5C_NOTIFY_ACTION_CHILD_UNSERIALIZED:
case H5C_NOTIFY_ACTION_CHILD_SERIALIZED:
/* do nothing */
break;
case H5C_NOTIFY_ACTION_BEFORE_EVICT:
for (u = 0; u < entry_ptr->flush_dep_nparents; u++) {
H5C_cache_entry_t *parent_ptr;
/* Sanity checks */
assert(entry_ptr->flush_dep_parent);
parent_ptr = entry_ptr->flush_dep_parent[u];
assert(parent_ptr);
assert(parent_ptr->flush_dep_nchildren > 0);
/* Destroy flush dependency with flush dependency parent */
if (H5C_destroy_flush_dependency(parent_ptr, entry_ptr) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTUNDEPEND, FAIL,
"unable to destroy prefetched entry flush dependency")
if (parent_ptr->prefetched) {
/* In prefetched entries, the fd_child_count field is
* used in sanity checks elsewhere. Thus update this
* field to reflect the destruction of the flush
* dependency relationship.
*/
assert(parent_ptr->fd_child_count > 0);
(parent_ptr->fd_child_count)--;
} /* end if */
} /* end for */
break;
default:
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unknown action from metadata cache")
break;
} /* end switch */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5C__prefetched_entry_notify() */
/*-------------------------------------------------------------------------
* Function: H5C__prefetched_entry_free_icr
*
* Purpose: Free the in core representation of the prefetched entry.
* Verify that the image buffer associated with the entry
* has been either transferred or freed.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 8/13/15
*
*-------------------------------------------------------------------------
*/
static herr_t
H5C__prefetched_entry_free_icr(void *_thing)
{
H5C_cache_entry_t *entry_ptr = (H5C_cache_entry_t *)_thing;
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
/* Sanity checks */
assert(entry_ptr);
assert(entry_ptr->prefetched);
/* Release array for flush dependency parent addresses */
if (entry_ptr->fd_parent_addrs != NULL) {
assert(entry_ptr->fd_parent_count > 0);
entry_ptr->fd_parent_addrs = (haddr_t *)H5MM_xfree((void *)entry_ptr->fd_parent_addrs);
} /* end if */
else
assert(entry_ptr->fd_parent_count == 0);
if (entry_ptr->image_ptr != NULL)
HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "prefetched entry image buffer still attached?")
entry_ptr = H5FL_FREE(H5C_cache_entry_t, entry_ptr);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5C__prefetched_entry_free_icr() */
static herr_t
H5C__prefetched_entry_fsf_size(const void H5_ATTR_UNUSED *thing, hsize_t H5_ATTR_UNUSED *fsf_size_ptr)
{
FUNC_ENTER_PACKAGE_NOERR /* Yes, even though this pushes an error on the stack */
HERROR(H5E_CACHE, H5E_SYSTEM, "called unreachable fcn.");
FUNC_LEAVE_NOAPI(FAIL)
} /* end H5C__prefetched_entry_fsf_size() */
|
