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
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* 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: H5SMcache.c
* Nov 13 2006
* James Laird
*
* Purpose: Implement shared message metadata cache methods.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5SMmodule.h" /* This source code file is part of the H5SM module */
/***********/
/* Headers */
/***********/
#include "H5Eprivate.h" /* Error handling */
#include "H5Fprivate.h" /* File access */
#include "H5FLprivate.h" /* Free Lists */
#include "H5MFprivate.h" /* File memory management */
#include "H5MMprivate.h" /* Memory management */
#include "H5SMpkg.h" /* Shared object header messages */
#include "H5WBprivate.h" /* Wrapped Buffers */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
/* Metadata cache (H5AC) callbacks */
static herr_t H5SM__cache_table_get_initial_load_size(void *udata, size_t *image_len);
static htri_t H5SM__cache_table_verify_chksum(const void *image_ptr, size_t len, void *udata_ptr);
static void * H5SM__cache_table_deserialize(const void *image, size_t len, void *udata, hbool_t *dirty);
static herr_t H5SM__cache_table_image_len(const void *thing, size_t *image_len);
static herr_t H5SM__cache_table_serialize(const H5F_t *f, void *image, size_t len, void *thing);
static herr_t H5SM__cache_table_free_icr(void *thing);
static herr_t H5SM__cache_list_get_initial_load_size(void *udata, size_t *image_len);
static htri_t H5SM__cache_list_verify_chksum(const void *image_ptr, size_t len, void *udata_ptr);
static void * H5SM__cache_list_deserialize(const void *image, size_t len, void *udata, hbool_t *dirty);
static herr_t H5SM__cache_list_image_len(const void *thing, size_t *image_len);
static herr_t H5SM__cache_list_serialize(const H5F_t *f, void *image, size_t len, void *thing);
static herr_t H5SM__cache_list_free_icr(void *thing);
/*********************/
/* Package Variables */
/*********************/
/* H5SM inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_SOHM_TABLE[1] = {{
H5AC_SOHM_TABLE_ID, /* Metadata client ID */
"shared message table", /* Metadata client name (for debugging) */
H5FD_MEM_SOHM_TABLE, /* File space memory type for client */
H5AC__CLASS_NO_FLAGS_SET, /* Client class behavior flags */
H5SM__cache_table_get_initial_load_size, /* 'get_initial_load_size' callback */
NULL, /* 'get_final_load_size' callback */
H5SM__cache_table_verify_chksum, /* 'verify_chksum' callback */
H5SM__cache_table_deserialize, /* 'deserialize' callback */
H5SM__cache_table_image_len, /* 'image_len' callback */
NULL, /* 'pre_serialize' callback */
H5SM__cache_table_serialize, /* 'serialize' callback */
NULL, /* 'notify' callback */
H5SM__cache_table_free_icr, /* 'free_icr' callback */
NULL, /* 'fsf_size' callback */
NULL, /* 'refresh' callback */
}};
const H5AC_class_t H5AC_SOHM_LIST[1] = {{
H5AC_SOHM_LIST_ID, /* Metadata client ID */
"shared message list", /* Metadata client name (for debugging) */
H5FD_MEM_SOHM_TABLE, /* File space memory type for client */
H5AC__CLASS_NO_FLAGS_SET, /* Client class behavior flags */
H5SM__cache_list_get_initial_load_size, /* 'get_initial_load_size' callback */
NULL, /* 'get_final_load_size' callback */
H5SM__cache_list_verify_chksum, /* 'verify_chksum' callback */
H5SM__cache_list_deserialize, /* 'deserialize' callback */
H5SM__cache_list_image_len, /* 'image_len' callback */
NULL, /* 'pre_serialize' callback */
H5SM__cache_list_serialize, /* 'serialize' callback */
NULL, /* 'notify' callback */
H5SM__cache_list_free_icr, /* 'free_icr' callback */
NULL, /* 'fsf_size' callback */
NULL, /* 'refresh' callback */
}};
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_get_initial_load_size()
*
* Purpose: Return the size of the master table of Shared Object Header
* Message indexes on disk.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_get_initial_load_size(void *_udata, size_t *image_len)
{
const H5SM_table_cache_ud_t *udata = (const H5SM_table_cache_ud_t *)_udata; /* User data for callback */
FUNC_ENTER_PACKAGE_NOERR
/* Check arguments */
HDassert(udata);
HDassert(udata->f);
HDassert(image_len);
/* Set the image length size */
*image_len = H5SM_TABLE_SIZE(udata->f);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_table_get_initial_load_size() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_verify_chksum
*
* Purpose: Verify the computed checksum of the data structure is the
* same as the stored chksum.
*
* Return: Success: TRUE/FALSE
* Failure: Negative
*
* Programmer: Vailin Choi; Aug 2015
*
*-------------------------------------------------------------------------
*/
htri_t
H5SM__cache_table_verify_chksum(const void *_image, size_t len, void H5_ATTR_UNUSED *_udata)
{
const uint8_t *image = (const uint8_t *)_image; /* Pointer into raw data buffer */
uint32_t stored_chksum; /* Stored metadata checksum value */
uint32_t computed_chksum; /* Computed metadata checksum value */
htri_t ret_value = TRUE; /* Return value */
FUNC_ENTER_PACKAGE_NOERR
/* Check arguments */
HDassert(image);
/* Get stored and computed checksums */
H5F_get_checksums(image, len, &stored_chksum, &computed_chksum);
if (stored_chksum != computed_chksum)
ret_value = FALSE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_table_verify_chksum() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_deserialize
*
* Purpose: Given a buffer containing the on disk representation of the
* master table of Shared Object Header Message indexes, deserialize
* the table, copy the contents into a newly allocated instance of
* H5SM_master_table_t, and return a pointer to the new instance.
*
* Return: Success: Pointer to in core representation
* Failure: NULL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static void *
H5SM__cache_table_deserialize(const void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_udata,
hbool_t H5_ATTR_UNUSED *dirty)
{
H5F_t * f; /* File pointer -- from user data */
H5SM_master_table_t * table = NULL; /* Shared message table that we deserializing */
H5SM_table_cache_ud_t *udata = (H5SM_table_cache_ud_t *)_udata; /* Pointer to user data */
const uint8_t * image = (const uint8_t *)_image; /* Pointer into input buffer */
uint32_t stored_chksum; /* Stored metadata checksum value */
size_t u; /* Counter variable for index headers */
void * ret_value = NULL; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(image);
HDassert(len > 0);
HDassert(udata);
HDassert(udata->f);
f = udata->f;
HDassert(dirty);
/* Verify that we're reading version 0 of the table; this is the only
* version defined so far.
*/
HDassert(H5F_SOHM_VERS(f) == HDF5_SHAREDHEADER_VERSION);
/* Allocate space for the master table in memory */
if (NULL == (table = H5FL_CALLOC(H5SM_master_table_t)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "memory allocation failed")
/* Read number of indexes and version from file superblock */
table->num_indexes = H5F_SOHM_NINDEXES(f);
HDassert(table->num_indexes > 0);
/* Compute the size of the SOHM table header on disk. This is the "table"
* itself plus each index within the table
*/
table->table_size = H5SM_TABLE_SIZE(f);
HDassert(table->table_size == len);
/* Check magic number */
if (HDmemcmp(image, H5SM_TABLE_MAGIC, (size_t)H5_SIZEOF_MAGIC) != 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTLOAD, NULL, "bad SOHM table signature")
image += H5_SIZEOF_MAGIC;
/* Allocate space for the index headers in memory*/
if (NULL == (table->indexes =
(H5SM_index_header_t *)H5FL_ARR_MALLOC(H5SM_index_header_t, (size_t)table->num_indexes)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "memory allocation failed for SOHM indexes")
/* Read in the index headers */
for (u = 0; u < table->num_indexes; ++u) {
/* Verify correct version of index list */
if (H5SM_LIST_VERSION != *image++)
HGOTO_ERROR(H5E_SOHM, H5E_VERSION, NULL, "bad shared message list version number")
/* Type of the index (list or B-tree) */
table->indexes[u].index_type = (H5SM_index_type_t)*image++;
/* Type of messages in the index */
UINT16DECODE(image, table->indexes[u].mesg_types);
/* Minimum size of message to share */
UINT32DECODE(image, table->indexes[u].min_mesg_size);
/* List cutoff; fewer than this number and index becomes a list */
UINT16DECODE(image, table->indexes[u].list_max);
/* B-tree cutoff; more than this number and index becomes a B-tree */
UINT16DECODE(image, table->indexes[u].btree_min);
/* Number of messages shared */
UINT16DECODE(image, table->indexes[u].num_messages);
/* Address of the actual index */
H5F_addr_decode(f, &image, &(table->indexes[u].index_addr));
/* Address of the index's heap */
H5F_addr_decode(f, &image, &(table->indexes[u].heap_addr));
/* Compute the size of a list index for this SOHM index */
table->indexes[u].list_size = H5SM_LIST_SIZE(f, table->indexes[u].list_max);
} /* end for */
/* checksum verification already done in verify_chksum cb */
/* Read in checksum */
UINT32DECODE(image, stored_chksum);
/* Sanity check */
HDassert((size_t)(image - (const uint8_t *)_image) == table->table_size);
/* Set return value */
ret_value = table;
done:
if (!ret_value && table)
if (H5SM__table_free(table) < 0)
HDONE_ERROR(H5E_SOHM, H5E_CANTFREE, NULL, "unable to destroy sohm table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_table_deserialize() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_image_len
*
* Purpose: Compute the size in bytes of the specified instance of
* H5SM_master_table_t on disk, and return it in *image_len.
* On failure, the value of *image_len is undefined.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_image_len(const void *_thing, size_t *image_len)
{
const H5SM_master_table_t *table =
(const H5SM_master_table_t *)_thing; /* Shared message table to query */
FUNC_ENTER_PACKAGE_NOERR
/* Check arguments */
HDassert(table);
HDassert(table->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(table->cache_info.type == H5AC_SOHM_TABLE);
HDassert(image_len);
*image_len = table->table_size;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_table_image_len() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_serialize
*
* Purpose: Serialize the contents of the supplied shared message table, and
* load this data into the supplied buffer.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_thing)
{
H5SM_master_table_t *table = (H5SM_master_table_t *)_thing; /* Shared message table to encode */
uint8_t * image = (uint8_t *)_image; /* Pointer into raw data buffer */
uint32_t computed_chksum; /* Computed metadata checksum value */
size_t u; /* Counter variable */
FUNC_ENTER_PACKAGE_NOERR
/* Check arguments */
HDassert(f);
HDassert(image);
HDassert(table);
HDassert(table->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(table->cache_info.type == H5AC_SOHM_TABLE);
HDassert(table->table_size == len);
/* Verify that we're writing version 0 of the table; this is the only
* version defined so far.
*/
HDassert(H5F_SOHM_VERS(f) == HDF5_SHAREDHEADER_VERSION);
/* Encode magic number */
H5MM_memcpy(image, H5SM_TABLE_MAGIC, (size_t)H5_SIZEOF_MAGIC);
image += H5_SIZEOF_MAGIC;
/* Encode each index header */
for (u = 0; u < table->num_indexes; ++u) {
/* Version for this list */
*image++ = H5SM_LIST_VERSION;
/* Is message index a list or a B-tree? */
*image++ = (uint8_t)table->indexes[u].index_type;
/* Type of messages in the index */
UINT16ENCODE(image, table->indexes[u].mesg_types);
/* Minimum size of message to share */
UINT32ENCODE(image, table->indexes[u].min_mesg_size);
/* List cutoff; fewer than this number and index becomes a list */
UINT16ENCODE(image, table->indexes[u].list_max);
/* B-tree cutoff; more than this number and index becomes a B-tree */
UINT16ENCODE(image, table->indexes[u].btree_min);
/* Number of messages shared */
UINT16ENCODE(image, table->indexes[u].num_messages);
/* Address of the actual index */
H5F_addr_encode(f, &image, table->indexes[u].index_addr);
/* Address of the index's heap */
H5F_addr_encode(f, &image, table->indexes[u].heap_addr);
} /* end for */
/* Compute checksum on buffer */
computed_chksum = H5_checksum_metadata(_image, (table->table_size - H5SM_SIZEOF_CHECKSUM), 0);
UINT32ENCODE(image, computed_chksum);
/* sanity check */
HDassert((size_t)(image - ((uint8_t *)_image)) == table->table_size);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_table_serialize() */
/*****************************************/
/* no H5SM_cache_table_notify() function */
/*****************************************/
/*-------------------------------------------------------------------------
* Function: H5SM__cache_table_free_icr
*
* Purpose: Free memory used by the SOHM table.
*
* Note: The metadata cache sets the object's cache_info.magic to
* H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
* callback (checked in assert).
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_table_free_icr(void *_thing)
{
H5SM_master_table_t *table = (H5SM_master_table_t *)_thing; /* Shared message table to release */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(table);
HDassert(table->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
HDassert(table->cache_info.type == H5AC_SOHM_TABLE);
/* Destroy Shared Object Header Message table */
if (H5SM__table_free(table) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTRELEASE, FAIL, "unable to free shared message table")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_cache_table_free_icr() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_get_initial_load_size()
*
* Purpose: Return the on disk size of list of SOHM messages. In this case,
* we simply look up the size in the user data, and return that value
* in *image_len.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_get_initial_load_size(void *_udata, size_t *image_len)
{
const H5SM_list_cache_ud_t *udata = (const H5SM_list_cache_ud_t *)_udata; /* User data for callback */
FUNC_ENTER_PACKAGE_NOERR
/* Check arguments */
HDassert(udata);
HDassert(udata->header);
HDassert(udata->header->list_size > 0);
HDassert(image_len);
/* Set the image length size */
*image_len = udata->header->list_size;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_list_get_initial_load_size() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_verify_chksum
*
* Purpose: Verify the computed checksum of the data structure is the
* same as the stored chksum.
*
* Return: Success: TRUE/FALSE
* Failure: Negative
*
* Programmer: Vailin Choi; Aug 2015
*
*-------------------------------------------------------------------------
*/
htri_t
H5SM__cache_list_verify_chksum(const void *_image, size_t H5_ATTR_UNUSED len, void *_udata)
{
const uint8_t * image = (const uint8_t *)_image; /* Pointer into raw data buffer */
H5SM_list_cache_ud_t *udata = (H5SM_list_cache_ud_t *)_udata; /* User data for callback */
size_t chk_size; /* Exact size of the node with checksum at the end */
uint32_t stored_chksum; /* Stored metadata checksum value */
uint32_t computed_chksum; /* Computed metadata checksum value */
htri_t ret_value = TRUE; /* Return value */
FUNC_ENTER_PACKAGE_NOERR
/* Check arguments */
HDassert(image);
HDassert(udata);
/* Exact size with checksum at the end */
chk_size = H5SM_LIST_SIZE(udata->f, udata->header->num_messages);
/* Get stored and computed checksums */
H5F_get_checksums(image, chk_size, &stored_chksum, &computed_chksum);
if (stored_chksum != computed_chksum)
ret_value = FALSE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_list_verify_chksum() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_deserialize
*
* Purpose: Given a buffer containing the on disk image of a list of
* SOHM message, deserialize the list, load it into a newly allocated
* instance of H5SM_list_t, and return a pointer to same.
*
* Return: Success: Pointer to in core representation
* Failure: NULL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static void *
H5SM__cache_list_deserialize(const void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_udata,
hbool_t H5_ATTR_UNUSED *dirty)
{
H5SM_list_t * list = NULL; /* The SOHM list being read in */
H5SM_list_cache_ud_t *udata = (H5SM_list_cache_ud_t *)_udata; /* User data for callback */
H5SM_bt2_ctx_t ctx; /* Message encoding context */
const uint8_t * image = (const uint8_t *)_image; /* Pointer into input buffer */
uint32_t stored_chksum; /* Stored metadata checksum value */
size_t u; /* Counter variable for messages in list */
void * ret_value = NULL; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(image);
HDassert(len > 0);
HDassert(udata);
HDassert(udata->header);
HDassert(udata->header->list_size == len);
HDassert(dirty);
/* Allocate space for the SOHM list data structure */
if (NULL == (list = H5FL_MALLOC(H5SM_list_t)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "memory allocation failed")
HDmemset(&list->cache_info, 0, sizeof(H5AC_info_t));
/* Allocate list in memory as an array*/
if (NULL == (list->messages = (H5SM_sohm_t *)H5FL_ARR_MALLOC(H5SM_sohm_t, udata->header->list_max)))
HGOTO_ERROR(H5E_SOHM, H5E_NOSPACE, NULL, "file allocation failed for SOHM list")
list->header = udata->header;
/* Check magic number */
if (HDmemcmp(image, H5SM_LIST_MAGIC, (size_t)H5_SIZEOF_MAGIC) != 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTLOAD, NULL, "bad SOHM list signature")
image += H5_SIZEOF_MAGIC;
/* Read messages into the list array */
ctx.sizeof_addr = H5F_SIZEOF_ADDR(udata->f);
for (u = 0; u < udata->header->num_messages; u++) {
if (H5SM__message_decode(image, &(list->messages[u]), &ctx) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTLOAD, NULL, "can't decode shared message")
image += H5SM_SOHM_ENTRY_SIZE(udata->f);
} /* end for */
/* checksum verification already done in verify_chksum cb */
/* Read in checksum */
UINT32DECODE(image, stored_chksum);
/* Sanity check */
HDassert((size_t)(image - (const uint8_t *)_image) <= udata->header->list_size);
/* Initialize the rest of the array */
for (u = udata->header->num_messages; u < udata->header->list_max; u++)
list->messages[u].location = H5SM_NO_LOC;
/* Set return value */
ret_value = list;
done:
if (!ret_value && list) {
if (list->messages)
list->messages = H5FL_ARR_FREE(H5SM_sohm_t, list->messages);
list = H5FL_FREE(H5SM_list_t, list);
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_list_deserialize() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_image_len
*
* Purpose: Get the size of the shared message list on disk.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_image_len(const void *_thing, size_t *image_len)
{
const H5SM_list_t *list = (const H5SM_list_t *)_thing; /* Shared message list to query */
FUNC_ENTER_PACKAGE_NOERR
/* Check arguments */
HDassert(list);
HDassert(list->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(list->cache_info.type == H5AC_SOHM_LIST);
HDassert(list->header);
HDassert(image_len);
*image_len = list->header->list_size;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM__cache_list_image_len() */
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_serialize
*
* Purpose: Serialize the contents of the supplied shared message list, and
* load this data into the supplied buffer.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_NDEBUG_UNUSED len, void *_thing)
{
H5SM_list_t * list = (H5SM_list_t *)_thing; /* Instance being serialized */
H5SM_bt2_ctx_t ctx; /* Message encoding context */
uint8_t * image = (uint8_t *)_image; /* Pointer into raw data buffer */
uint32_t computed_chksum; /* Computed metadata checksum value */
size_t mesgs_serialized; /* Number of messages serialized */
size_t u; /* Local index variable */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(f);
HDassert(image);
HDassert(list);
HDassert(list->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(list->cache_info.type == H5AC_SOHM_LIST);
HDassert(list->header);
HDassert(list->header->list_size == len);
/* Encode magic number */
H5MM_memcpy(image, H5SM_LIST_MAGIC, (size_t)H5_SIZEOF_MAGIC);
image += H5_SIZEOF_MAGIC;
/* serialize messages from the messages array */
mesgs_serialized = 0;
ctx.sizeof_addr = H5F_SIZEOF_ADDR(f);
for (u = 0; ((u < list->header->list_max) && (mesgs_serialized < list->header->num_messages)); u++) {
if (list->messages[u].location != H5SM_NO_LOC) {
if (H5SM__message_encode(image, &(list->messages[u]), &ctx) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTFLUSH, FAIL, "unable to serialize shared message")
image += H5SM_SOHM_ENTRY_SIZE(f);
++mesgs_serialized;
} /* end if */
} /* end for */
HDassert(mesgs_serialized == list->header->num_messages);
/* Compute checksum on buffer */
computed_chksum = H5_checksum_metadata(_image, (size_t)(image - (uint8_t *)_image), 0);
UINT32ENCODE(image, computed_chksum);
/* sanity check */
HDassert((size_t)(image - (uint8_t *)_image) <= list->header->list_size);
/* Clear memory */
HDmemset(image, 0, (list->header->list_size - (size_t)(image - (uint8_t *)_image)));
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM__cache_list_serialize() */
/****************************************/
/* no H5SM_cache_list_notify() function */
/****************************************/
/*-------------------------------------------------------------------------
* Function: H5SM__cache_list_free_icr
*
* Purpose: Free all memory used by the list.
*
* Note: The metadata cache sets the object's cache_info.magic to
* H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
* callback (checked in assert).
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 7/28/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM__cache_list_free_icr(void *_thing)
{
H5SM_list_t *list = (H5SM_list_t *)_thing; /* Shared message list to release */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
HDassert(list);
HDassert(list->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
HDassert(list->cache_info.type == H5AC_SOHM_LIST);
/* Destroy Shared Object Header Message list */
if (H5SM__list_free(list) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTRELEASE, FAIL, "unable to free shared message list")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_cache_list_free_icr() */
|