summaryrefslogtreecommitdiffstats
path: root/src/H5Otest.c
blob: 429dcdd4f1dfb3e91451ceb17bf3d4ea38700579 (plain)
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
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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://support.hdfgroup.org/ftp/HDF5/releases.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* Programmer:  Quincey Koziol
 *              Monday, December 4, 2006
 *
 * Purpose:	Object header testing functions.
 */

/****************/
/* Module Setup */
/****************/

#define H5A_FRIEND     /*suppress error about including H5Apkg	  */
#include "H5Omodule.h" /* This source code file is part of the H5O module */
#define H5O_TESTING    /*suppress warning about H5O testing funcs*/

/***********/
/* Headers */
/***********/
#include "H5private.h"   /* Generic Functions			*/
#include "H5Apkg.h"      /* Attributes	  			*/
#include "H5ACprivate.h" /* Metadata cache			*/
#include "H5CXprivate.h" /* API Contexts                         */
#include "H5Eprivate.h"  /* Error handling		  	*/
#include "H5Iprivate.h"  /* IDs			  		*/
#include "H5Opkg.h"      /* Object headers			*/

/****************/
/* Local Macros */
/****************/

/******************/
/* Local Typedefs */
/******************/

/********************/
/* Package Typedefs */
/********************/

/********************/
/* Local Prototypes */
/********************/

/*********************/
/* Package Variables */
/*********************/

/*****************************/
/* Library Private Variables */
/*****************************/

/*******************/
/* Local Variables */
/*******************/

/*--------------------------------------------------------------------------
 NAME
    H5O__is_attr_dense_test
 PURPOSE
    Determine whether attributes for an object are stored "densely"
 USAGE
    htri_t H5O__is_attr_dense_test(oid)
        hid_t oid;              IN: object to check
 RETURNS
    Non-negative TRUE/FALSE on success, negative on failure
 DESCRIPTION
    Checks to see if the object is storing attributes in the "dense" or
    "compact" form.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
htri_t
H5O__is_attr_dense_test(hid_t oid)
{
    H5O_t *     oh = NULL;              /* Object header */
    H5O_ainfo_t ainfo;                  /* Attribute information for object */
    H5O_loc_t * loc;                    /* Pointer to object's location */
    hbool_t     api_ctx_pushed = FALSE; /* Whether API context pushed */
    htri_t      ret_value      = FAIL;  /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get object location for object */
    if (NULL == (loc = H5O_get_loc(oid)))
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")

    /* Set API context */
    if (H5CX_push() < 0)
        HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set API context")
    api_ctx_pushed = TRUE;

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__READ_ONLY_FLAG, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header")

    /* Check for attribute info stored */
    ainfo.fheap_addr = HADDR_UNDEF;
    if (oh->version > H5O_VERSION_1) {
        /* Check for (& retrieve if available) attribute info */
        if (H5A__get_ainfo(loc->file, oh, &ainfo) < 0)
            HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message")
    } /* end if */

    /* Check if dense storage is being used */
    if (H5F_addr_defined(ainfo.fheap_addr)) {
        /* Check for any messages in object header */
        HDassert(H5O_msg_count_real(oh, H5O_MSG_ATTR) == 0);

        ret_value = TRUE;
    } /* end if */
    else
        ret_value = FALSE;

done:
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header")
    if (api_ctx_pushed && H5CX_pop() < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTRESET, FAIL, "can't reset API context")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__is_attr_dense_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__is_attr_empty_test
 PURPOSE
    Determine whether there are any attributes for an object
 USAGE
    htri_t H5O__is_attr_empty_test(oid)
        hid_t oid;              IN: object to check
 RETURNS
    Non-negative TRUE/FALSE on success, negative on failure
 DESCRIPTION
    Checks to see if the object is storing any attributes.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
htri_t
H5O__is_attr_empty_test(hid_t oid)
{
    H5O_t *     oh       = NULL;        /* Object header */
    H5B2_t *    bt2_name = NULL;        /* v2 B-tree handle for name index */
    H5O_ainfo_t ainfo;                  /* Attribute information for object */
    htri_t      ainfo_exists = FALSE;   /* Whether the attribute info exists in the file */
    H5O_loc_t * loc;                    /* Pointer to object's location */
    hsize_t     nattrs;                 /* Number of attributes */
    hbool_t     api_ctx_pushed = FALSE; /* Whether API context pushed */
    htri_t      ret_value      = FAIL;  /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get object location for object */
    if (NULL == (loc = H5O_get_loc(oid)))
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")

    /* Set API context */
    if (H5CX_push() < 0)
        HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set API context")
    api_ctx_pushed = TRUE;

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__READ_ONLY_FLAG, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header")

    /* Check for attribute info stored */
    if (oh->version > H5O_VERSION_1) {
        /* Check for (& retrieve if available) attribute info */
        if ((ainfo_exists = H5A__get_ainfo(loc->file, oh, &ainfo)) < 0)
            HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message")
    } /* end if */

    /* Retrieve the number of attribute messages in header */
    nattrs = H5O_msg_count_real(oh, H5O_MSG_ATTR);

    /* Check for later version of object header format & attribute info available */
    if (oh->version > H5O_VERSION_1) {
        if (ainfo_exists) {
            /* Check for using dense storage */
            if (H5F_addr_defined(ainfo.fheap_addr)) {
                /* Check for any messages in object header */
                HDassert(nattrs == 0);

                /* Set metadata tag in API context */
                H5_BEGIN_TAG(loc->addr);

                /* Open the name index v2 B-tree */
                if (NULL == (bt2_name = H5B2_open(loc->file, ainfo.name_bt2_addr, NULL)))
                    HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTOPENOBJ, FAIL,
                                    "unable to open v2 B-tree for name index")

                /* Reset metadata tag in API context */
                H5_END_TAG

                /* Retrieve # of records in name index */
                if (H5B2_get_nrec(bt2_name, &nattrs) < 0)
                    HGOTO_ERROR(H5E_OHDR, H5E_CANTCOUNT, FAIL,
                                "unable to retrieve # of records from name index")
            } /* end if */

            /* Verify that attribute count in object header is correct */
            HDassert(nattrs == ainfo.nattrs);
        } /* end if */
        else
            HDassert(nattrs == 0);
    } /* end if */

    /* Set the return value */
    ret_value = (nattrs == 0) ? TRUE : FALSE;

done:
    /* Release resources */
    if (bt2_name && H5B2_close(bt2_name) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTCLOSEOBJ, FAIL, "can't close v2 B-tree for name index")
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header")
    if (api_ctx_pushed && H5CX_pop() < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTRESET, FAIL, "can't reset API context")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__is_attr_empty_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__num_attrs_test
 PURPOSE
    Determine whether there are any attributes for an object
 USAGE
    herr_t H5O__num_attrs_test(oid, nattrs)
        hid_t oid;              IN: object to check
        hsize_t *nattrs;        OUT: Number of attributes on object
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Checks the # of attributes on an object
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5O__num_attrs_test(hid_t oid, hsize_t *nattrs)
{
    H5O_t *     oh       = NULL;          /* Object header */
    H5B2_t *    bt2_name = NULL;          /* v2 B-tree handle for name index */
    H5O_ainfo_t ainfo;                    /* Attribute information for object */
    H5O_loc_t * loc;                      /* Pointer to object's location */
    hsize_t     obj_nattrs;               /* Number of attributes */
    hbool_t     api_ctx_pushed = FALSE;   /* Whether API context pushed */
    herr_t      ret_value      = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get object location for object */
    if (NULL == (loc = H5O_get_loc(oid)))
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")

    /* Set API context */
    if (H5CX_push() < 0)
        HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set API context")
    api_ctx_pushed = TRUE;

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__READ_ONLY_FLAG, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header")

    /* Check for attribute info stored */
    ainfo.fheap_addr = HADDR_UNDEF;
    if (oh->version > H5O_VERSION_1) {
        /* Check for (& retrieve if available) attribute info */
        if (H5A__get_ainfo(loc->file, oh, &ainfo) < 0)
            HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message")
    } /* end if */

    /* Retrieve the number of attribute messages in header */
    obj_nattrs = H5O_msg_count_real(oh, H5O_MSG_ATTR);

    /* Check for later version of object header format */
    if (oh->version > H5O_VERSION_1) {
        /* Check for using dense storage */
        if (H5F_addr_defined(ainfo.fheap_addr)) {
            /* Check for any messages in object header */
            HDassert(obj_nattrs == 0);

            /* Set metadata tag in API context */
            H5_BEGIN_TAG(loc->addr);

            /* Open the name index v2 B-tree */
            if (NULL == (bt2_name = H5B2_open(loc->file, ainfo.name_bt2_addr, NULL)))
                HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for name index")

            /* Reset metadata tag in API context */
            H5_END_TAG

            /* Retrieve # of records in name index */
            if (H5B2_get_nrec(bt2_name, &obj_nattrs) < 0)
                HGOTO_ERROR(H5E_OHDR, H5E_CANTCOUNT, FAIL, "unable to retrieve # of records from name index")
        } /* end if */

        /* Verify that attribute count in object header is correct */
        HDassert(obj_nattrs == ainfo.nattrs);
    } /* end if */

    /* Set the number of attributes */
    *nattrs = obj_nattrs;

done:
    /* Release resources */
    if (bt2_name && H5B2_close(bt2_name) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTCLOSEOBJ, FAIL, "can't close v2 B-tree for name index")
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header")
    if (api_ctx_pushed && H5CX_pop() < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTRESET, FAIL, "can't reset API context")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__num_attrs_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__attr_dense_info_test
 PURPOSE
    Retrieve information about the state of the "dense" storage for attributes
 USAGE
    herr_t H5O__attr_dense_info_test(oid, name_count, corder_count)
        hid_t oid;              IN: Object to check
        hsize_t *name_count;    OUT: Number of attributes in name index
        hsize_t *corder_count;  OUT: Number of attributes in creation order index
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Currently, just retrieves the number of attributes in each index and returns
    them.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5O__attr_dense_info_test(hid_t oid, hsize_t *name_count, hsize_t *corder_count)
{
    H5O_t *     oh         = NULL;        /* Object header */
    H5B2_t *    bt2_name   = NULL;        /* v2 B-tree handle for name index */
    H5B2_t *    bt2_corder = NULL;        /* v2 B-tree handle for creation order index */
    H5O_ainfo_t ainfo;                    /* Attribute information for object */
    H5O_loc_t * loc;                      /* Pointer to object's location */
    hbool_t     api_ctx_pushed = FALSE;   /* Whether API context pushed */
    herr_t      ret_value      = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get object location for object */
    if (NULL == (loc = H5O_get_loc(oid)))
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")

    /* Set API context */
    if (H5CX_push() < 0)
        HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set API context")
    api_ctx_pushed = TRUE;

    /* Set metadata tag in API context */
    H5_BEGIN_TAG(loc->addr);

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__READ_ONLY_FLAG, FALSE)))
        HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header")

    /* Check for attribute info stored */
    ainfo.fheap_addr = HADDR_UNDEF;
    if (oh->version > H5O_VERSION_1) {
        /* Check for (& retrieve if available) attribute info */
        if (H5A__get_ainfo(loc->file, oh, &ainfo) < 0)
            HGOTO_ERROR_TAG(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message")
    } /* end if */

    /* Check for 'dense' attribute storage file addresses being defined */
    if (!H5F_addr_defined(ainfo.fheap_addr))
        HGOTO_DONE_TAG(FAIL)
    if (!H5F_addr_defined(ainfo.name_bt2_addr))
        HGOTO_DONE_TAG(FAIL)

    /* Open the name index v2 B-tree */
    if (NULL == (bt2_name = H5B2_open(loc->file, ainfo.name_bt2_addr, NULL)))
        HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for name index")

    /* Retrieve # of records in name index */
    if (H5B2_get_nrec(bt2_name, name_count) < 0)
        HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTCOUNT, FAIL, "unable to retrieve # of records from name index")

    /* Check if there is a creation order index */
    if (H5F_addr_defined(ainfo.corder_bt2_addr)) {
        /* Open the creation order index v2 B-tree */
        if (NULL == (bt2_corder = H5B2_open(loc->file, ainfo.corder_bt2_addr, NULL)))
            HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTOPENOBJ, FAIL,
                            "unable to open v2 B-tree for creation order index")

        /* Retrieve # of records in creation order index */
        if (H5B2_get_nrec(bt2_corder, corder_count) < 0)
            HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTCOUNT, FAIL,
                            "unable to retrieve # of records from creation order index")
    } /* end if */
    else
        *corder_count = 0;

    /* Reset metadata tag in API context */
    H5_END_TAG

done:
    /* Release resources */
    if (bt2_name && H5B2_close(bt2_name) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTCLOSEOBJ, FAIL, "can't close v2 B-tree for name index")
    if (bt2_corder && H5B2_close(bt2_corder) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTCLOSEOBJ, FAIL, "can't close v2 B-tree for creation order index")
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header")
    if (api_ctx_pushed && H5CX_pop() < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTRESET, FAIL, "can't reset API context")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__attr_dense_info_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__check_msg_marked_test
 PURPOSE
    Check if an unknown message with the "mark if unknown" flag actually gets
    marked.
 USAGE
    herr_t H5O__check_msg_marked_test(oid, flag_val)
        hid_t oid;              IN: Object to check
        hbool_t flag_val;       IN: Desired flag value
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Locates the "unknown" message and checks that the "was unknown" flag is set
    correctly.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5O__check_msg_marked_test(hid_t oid, hbool_t flag_val)
{
    H5O_t *     oh = NULL;           /* Object header */
    H5O_loc_t * loc;                 /* Pointer to object's location */
    H5O_mesg_t *idx_msg;             /* Pointer to message */
    unsigned    idx;                 /* Index of message */
    herr_t      ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get object location for object */
    if (NULL == (loc = H5O_get_loc(oid)))
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__READ_ONLY_FLAG, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header")

    /* Locate "unknown" message  */
    for (idx = 0, idx_msg = &oh->mesg[0]; idx < oh->nmesgs; idx++, idx_msg++)
        if (idx_msg->type->id == H5O_UNKNOWN_ID) {
            /* Check for "unknown" message having the correct flags */
            if (((idx_msg->flags & H5O_MSG_FLAG_WAS_UNKNOWN) > 0) != flag_val)
                HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, FAIL,
                            "'unknown' message has incorrect 'was unknown' flag value")

            /* Break out of loop, to indicate that the "unknown" message was found */
            break;
        } /* end if */

    /* Check for not finding an "unknown" message */
    if (idx == oh->nmesgs)
        HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "'unknown' message type not found")

done:
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__check_msg_marked_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__expunge_chunks_test
 PURPOSE
    Expunge all the chunks for an object header from the cache.
 USAGE
    herr_t H5O_expunge_chunks_test(loc)
        H5O_loc_t *loc;         IN: Object location for object header to expunge
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Iterates over all the chunks for an object header an expunges each from the
    metadata cache.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5O__expunge_chunks_test(const H5O_loc_t *loc)
{
    H5O_t * oh = NULL;           /* Object header */
    haddr_t chk_addr[16];        /* Array of chunk addresses */
    size_t  nchunks;             /* Number of chunks in object header */
    size_t  u;                   /* Local index variable */
    herr_t  ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__NO_FLAGS_SET, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to protect object header")

    /* Safety check */
    nchunks = oh->nchunks;
    HDassert(0 < nchunks && nchunks < NELMTS(chk_addr));

    /* Iterate over all the chunks, saving the chunk addresses */
    for (u = 0; u < oh->nchunks; u++)
        chk_addr[u] = oh->chunk[u].addr;

    /* Release the object header */
    if (H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to unprotect object header")

    /* Iterate over all the saved chunk addresses, evicting them from the cache */
    /* (in reverse order, so that chunk #0 is unpinned) */
    for (u = nchunks - 1; u < nchunks; u--)
        if (H5AC_expunge_entry(loc->file, (u == 0 ? H5AC_OHDR : H5AC_OHDR_CHK), chk_addr[u],
                               H5AC__NO_FLAGS_SET) < 0)
            HGOTO_ERROR(H5E_OHDR, H5E_CANTEXPUNGE, FAIL, "unable to expunge object header chunk")

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__expunge_chunks_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__get_rc_test
 PURPOSE
    Retrieve the refcount for the object header
 USAGE
    herr_t H5O__get_rc_test(loc, rc)
        const H5O_loc_t *loc;   IN: Object location for object header to query
        unsigned *rc;           OUT: Pointer to refcount for object header
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Protects object header, retrieves the object header's refcount, and
    unprotects object header.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5O__get_rc_test(const H5O_loc_t *loc, unsigned *rc)
{
    H5O_t *oh        = NULL;    /* Object header */
    herr_t ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE

    /* Sanity check */
    HDassert(loc);
    HDassert(rc);

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__READ_ONLY_FLAG, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to protect object header")

    /* Save the refcount for the object header */
    *rc = oh->nlink;

done:
    /* Release the object header */
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to unprotect object header")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__get_rc_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__msg_get_chunkno_test
 PURPOSE
    Retrieve the chunk number for an object header message of a given type.
 USAGE
    herr_t H5O__msg_get_chunkno_test(oid, msg_type, chunk_num)
        hid_t oid;              IN: Object to check
        unsigned msg_type;      IN: Object header message type to check
        unsigned *chunk_num;    OUT: Object header chunk that the message is in
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Retrieves the chunk number for the first object header message of a given
    type found in an object's header.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5O__msg_get_chunkno_test(hid_t oid, unsigned msg_type, unsigned *chunk_num)
{
    H5O_t *     oh = NULL;                /* Object header */
    H5O_loc_t * loc;                      /* Pointer to object's location */
    H5O_mesg_t *idx_msg;                  /* Pointer to message */
    unsigned    idx;                      /* Index of message */
    hbool_t     api_ctx_pushed = FALSE;   /* Whether API context pushed */
    herr_t      ret_value      = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get object location for object */
    if (NULL == (loc = H5O_get_loc(oid)))
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")

    /* Set API context */
    if (H5CX_push() < 0)
        HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set API context")
    api_ctx_pushed = TRUE;

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__READ_ONLY_FLAG, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header")

    /* Locate first message of given type */
    for (idx = 0, idx_msg = &oh->mesg[0]; idx < oh->nmesgs; idx++, idx_msg++)
        if (idx_msg->type->id == msg_type) {
            /* Set the chunk number for the message */
            *chunk_num = idx_msg->chunkno;

            /* Break out of loop, to indicate that the message was found */
            break;
        } /* end if */

    /* Check for not finding a message of the given type*/
    if (idx == oh->nmesgs)
        HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "message of type not found")

done:
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header")
    if (api_ctx_pushed && H5CX_pop() < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTRESET, FAIL, "can't reset API context")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__msg_get_chunkno_test() */

/*--------------------------------------------------------------------------
 NAME
    H5O__msg_move_to_new_chunk_test
 PURPOSE
    Move a message into a new chunk
 USAGE
    herr_t H5O__msg_move_to_new_chunk_test(oid, msg_type)
        hid_t oid;              IN: Object to check
        unsigned msg_type;      IN: Object header message type to check
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Moves the first message of the given type to a new object header chunk.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    DO NOT USE THIS FUNCTION FOR ANYTHING EXCEPT TESTING
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5O__msg_move_to_new_chunk_test(hid_t oid, unsigned msg_type)
{
    H5O_t *     oh = NULL;                /* Object header */
    H5O_loc_t * loc;                      /* Pointer to object's location */
    H5O_mesg_t *curr_msg;                 /* Pointer to current message */
    unsigned    idx;                      /* Index of message */
    hbool_t     api_ctx_pushed = FALSE;   /* Whether API context pushed */
    herr_t      ret_value      = SUCCEED; /* Return value */

    FUNC_ENTER_PACKAGE

    /* Get object location for object */
    if (NULL == (loc = H5O_get_loc(oid)))
        HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")

    /* Set API context */
    if (H5CX_push() < 0)
        HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set API context")
    api_ctx_pushed = TRUE;

    /* Get the object header */
    if (NULL == (oh = H5O_protect(loc, H5AC__NO_FLAGS_SET, FALSE)))
        HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header")

    /* Locate first message of given type */
    for (idx = 0, curr_msg = &oh->mesg[0]; idx < oh->nmesgs; idx++, curr_msg++)
        if (curr_msg->type->id == msg_type) {
            H5O_msg_alloc_info_t found_msg;                       /* Information about message to move */
            unsigned             msg_chunkno = curr_msg->chunkno; /* Chunk that the message is in */
            uint8_t *            end_chunk_data =
                (oh->chunk[msg_chunkno].image + oh->chunk[msg_chunkno].size) -
                (H5O_SIZEOF_CHKSUM_OH(oh) + oh->chunk[msg_chunkno].gap); /* End of message data in chunk */
            uint8_t *end_msg    = curr_msg->raw + curr_msg->raw_size;    /* End of current message */
            size_t   gap_size   = 0; /* Size of gap after current message */
            size_t   null_size  = 0; /* Size of NULL message after current message */
            unsigned null_msgno = 0; /* Index of NULL message after current message */
            size_t   total_size;     /* Total size of available space "around" current message */
            size_t   new_idx;        /* Index of new null message */

            /* Check if the message is the last one in the chunk */
            if (end_msg == end_chunk_data)
                gap_size = oh->chunk[msg_chunkno].gap;
            else {
                H5O_mesg_t *tmp_msg; /* Temp. pointer to message to operate on */
                unsigned    v;       /* Local index variable */

                /* Check for null message after this message, in same chunk */
                for (v = 0, tmp_msg = &oh->mesg[0]; v < oh->nmesgs; v++, tmp_msg++) {
                    if (tmp_msg->type->id == H5O_NULL_ID &&
                        (tmp_msg->raw - H5O_SIZEOF_MSGHDR_OH(oh)) == end_msg) {
                        null_msgno = v;
                        null_size  = (size_t)H5O_SIZEOF_MSGHDR_OH(oh) + tmp_msg->raw_size;
                        break;
                    } /* end if */

                    /* XXX: Should also check for NULL message in front of current message... */

                } /* end for */
            }     /* end else */

            /* Add up current message's total available space */
            total_size = curr_msg->raw_size + gap_size + null_size;

            /* Set up "found message" info for moving the message */
            found_msg.msgno      = (int)idx;
            found_msg.id         = curr_msg->type->id;
            found_msg.chunkno    = msg_chunkno;
            found_msg.gap_size   = gap_size;
            found_msg.null_size  = null_size;
            found_msg.total_size = total_size;
            found_msg.null_msgno = null_msgno;

            /* Allocate and initialize new chunk in the file, moving the found message */
            /* (*new_idx returned from this routine is unused here) */
            if (H5O__alloc_chunk(loc->file, oh, (curr_msg->raw_size + (size_t)H5O_SIZEOF_MSGHDR_OH(oh)),
                                 oh->nmesgs, &found_msg, &new_idx) < 0)
                HGOTO_ERROR(H5E_OHDR, H5E_CANTALLOC, FAIL, "can't allocate new object header chunk")

            /* Break out of loop, the message was found */
            break;
        } /* end if */

done:
    if (oh && H5O_unprotect(loc, oh, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header")
    if (api_ctx_pushed && H5CX_pop() < 0)
        HDONE_ERROR(H5E_OHDR, H5E_CANTRESET, FAIL, "can't reset API context")

    FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__msg_get_chunkno_test() */