summaryrefslogtreecommitdiffstats
path: root/src/H5FAhdr.c
blob: 52b90d1d44b2c13b70b7e0f751591c4a7ae2e0f2 (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:     H5FAhdr.c
 *
 * Purpose:     Array header routines for Fixed Array.
 *
 *-------------------------------------------------------------------------
 */

/**********************/
/* Module Declaration */
/**********************/

#include "H5FAmodule.h"         /* This source code file is part of the H5FA module */


/***********************/
/* Other Packages Used */
/***********************/


/***********/
/* Headers */
/***********/
#include "H5private.h"      /* Generic Functions                            */
#include "H5Eprivate.h"     /* Error handling                               */
#include "H5FApkg.h"        /* Fixed Arrays                                 */
#include "H5MFprivate.h"    /* File memory management                       */


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


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


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


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


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


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


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

/* Declare a free list to manage the H5FA_hdr_t struct */
H5FL_DEFINE_STATIC(H5FA_hdr_t);


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_alloc
 *
 * Purpose:     Allocate shared Fixed Array header
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
H5FA_hdr_t *, NULL, NULL,
H5FA__hdr_alloc(H5F_t *f))

    /* Local variables */
    H5FA_hdr_t *hdr = NULL;          /* Shared Fixed Array header */

    /* Check arguments */
    HDassert(f);

    /* Allocate space for the shared information */
    if(NULL == (hdr = H5FL_CALLOC(H5FA_hdr_t)))
        H5E_THROW(H5E_CANTALLOC, "memory allocation failed for Fixed Array shared header")

    /* Set non-zero internal fields */
    hdr->addr = HADDR_UNDEF;

    /* Set the internal parameters for the array */
    hdr->f = f;
    hdr->swmr_write = (H5F_INTENT(f) & H5F_ACC_SWMR_WRITE) > 0;
    hdr->sizeof_addr = H5F_SIZEOF_ADDR(f);
    hdr->sizeof_size = H5F_SIZEOF_SIZE(f);

    /* Set the return value */
    ret_value = hdr;

CATCH

    if(!ret_value)
        if(hdr && H5FA__hdr_dest(hdr) < 0)
            H5E_THROW(H5E_CANTFREE, "unable to destroy fixed array header")

END_FUNC(PKG)   /* end H5FA__hdr_alloc() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_init
 *
 * Purpose:     Initialize shared fixed array header
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Quincey Koziol
 *              Sunday, November 15, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__hdr_init(H5FA_hdr_t *hdr, void *ctx_udata))

    /* Local variables */

    /* Check arguments */
    HDassert(hdr);

    /* Set size of header on disk (locally and in statistics) */
    hdr->stats.hdr_size = hdr->size = H5FA_HEADER_SIZE_HDR(hdr);

    /* Set number of elements for Fixed Array in statistics */
    hdr->stats.nelmts = hdr->cparam.nelmts;

    /* Create the callback context, if there's one */
    if(hdr->cparam.cls->crt_context) {
        if(NULL == (hdr->cb_ctx = (*hdr->cparam.cls->crt_context)(ctx_udata)))
            H5E_THROW(H5E_CANTCREATE, "unable to create fixed array client callback context")
    } /* end if */

CATCH

END_FUNC(PKG)   /* end H5FA__hdr_init() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_create
 *
 * Purpose:     Creates a new Fixed Array header in the file
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
haddr_t, HADDR_UNDEF, HADDR_UNDEF,
H5FA__hdr_create(H5F_t *f, hid_t dxpl_id, const H5FA_create_t *cparam,
    void *ctx_udata))

    /* Local variables */
    H5FA_hdr_t *hdr = NULL;     /* Fixed array header */
    hbool_t inserted = FALSE;   /* Whether the header was inserted into cache */

    /* Check arguments */
    HDassert(f);
    HDassert(cparam);

#ifndef NDEBUG
{
    /* Check for valid parameters */
    if(cparam->raw_elmt_size == 0)
        H5E_THROW(H5E_BADVALUE, "element size must be greater than zero")
    if(cparam->max_dblk_page_nelmts_bits == 0)
        H5E_THROW(H5E_BADVALUE, "max. # of elements bits must be greater than zero")
    if(cparam->nelmts == 0)
        H5E_THROW(H5E_BADVALUE, "# of elements must be greater than zero")
}
#endif /* NDEBUG */

    /* Allocate space for the shared information */
    if(NULL == (hdr = H5FA__hdr_alloc(f)))
        H5E_THROW(H5E_CANTALLOC, "memory allocation failed for Fixed Array shared header")

    hdr->dblk_addr = HADDR_UNDEF;

    /* Set the creation parameters for the array */
    HDmemcpy(&hdr->cparam, cparam, sizeof(hdr->cparam));

    /* Finish initializing fixed array header */
    if(H5FA__hdr_init(hdr, ctx_udata) < 0)
        H5E_THROW(H5E_CANTINIT, "initialization failed for fixed array header")

    /* Allocate space for the header on disk */
    if(HADDR_UNDEF == (hdr->addr = H5MF_alloc(f, H5FD_MEM_FARRAY_HDR, dxpl_id, (hsize_t)hdr->size)))
        H5E_THROW(H5E_CANTALLOC, "file allocation failed for Fixed Array header")

    /* Create 'top' proxy for extensible array entries */
    if(hdr->swmr_write)
        if(NULL == (hdr->top_proxy = H5AC_proxy_entry_create()))
            H5E_THROW(H5E_CANTCREATE, "can't create fixed array entry proxy")

    /* Cache the new Fixed Array header */
    if(H5AC_insert_entry(f, dxpl_id, H5AC_FARRAY_HDR, hdr->addr, hdr, H5AC__NO_FLAGS_SET) < 0)
        H5E_THROW(H5E_CANTINSERT, "can't add fixed array header to cache")
    inserted = TRUE;

    /* Add header as child of 'top' proxy */
    if(hdr->top_proxy)
        if(H5AC_proxy_entry_add_child(hdr->top_proxy, f, dxpl_id, hdr) < 0)
            H5E_THROW(H5E_CANTSET, "unable to add fixed array entry as child of array proxy")

    /* Set address of array header to return */
    ret_value = hdr->addr;

CATCH

    if(!H5F_addr_defined(ret_value))
        if(hdr) {
            /* Remove from cache, if inserted */
            if(inserted)
                if(H5AC_remove_entry(hdr) < 0)
                    H5E_THROW(H5E_CANTREMOVE, "unable to remove fixed array header from cache")

            /* Release header's disk space */
            if(H5F_addr_defined(hdr->addr) && H5MF_xfree(f, H5FD_MEM_FARRAY_HDR, dxpl_id, hdr->addr, (hsize_t)hdr->size) < 0)
                H5E_THROW(H5E_CANTFREE, "unable to free Fixed Array header")

            /* Destroy header */
            if(H5FA__hdr_dest(hdr) < 0)
                H5E_THROW(H5E_CANTFREE, "unable to destroy Fixed Array header")
        } /* end if */

END_FUNC(PKG)   /* end H5FA__hdr_create() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_incr
 *
 * Purpose:     Increment component reference count on shared array header
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__hdr_incr(H5FA_hdr_t *hdr))

    /* Sanity check */
    HDassert(hdr);

    /* Mark header as un-evictable when something is depending on it */
    if(hdr->rc == 0)
        if(H5AC_pin_protected_entry(hdr) < 0)
            H5E_THROW(H5E_CANTPIN, "unable to pin fixed array header")

    /* Increment reference count on shared header */
    hdr->rc++;

CATCH

END_FUNC(PKG)   /* end H5FA__hdr_incr() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_decr
 *
 * Purpose:     Decrement component reference count on shared array header
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__hdr_decr(H5FA_hdr_t *hdr))

    /* Sanity check */
    HDassert(hdr);
    HDassert(hdr->rc);

    /* Decrement reference count on shared header */
    hdr->rc--;

    /* Mark header as evictable again when nothing depend on it */
    if(hdr->rc == 0) {
        HDassert(hdr->file_rc == 0);
        if(H5AC_unpin_entry(hdr) < 0)
            H5E_THROW(H5E_CANTUNPIN, "unable to unpin fixed array header")
    } /* end if */

CATCH

END_FUNC(PKG)   /* end H5FA__hdr_decr() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_fuse_incr
 *
 * Purpose:     Increment file reference count on shared array header
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, NOERR,
herr_t, SUCCEED, -,
H5FA__hdr_fuse_incr(H5FA_hdr_t *hdr))

    /* Sanity check */
    HDassert(hdr);

    /* Increment file reference count on shared header */
    hdr->file_rc++;

END_FUNC(PKG)   /* end H5FA__hdr_fuse_incr() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_fuse_decr
 *
 * Purpose:     Decrement file reference count on shared array header
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, NOERR,
size_t, 0, -,
H5FA__hdr_fuse_decr(H5FA_hdr_t *hdr))

    /* Sanity check */
    HDassert(hdr);
    HDassert(hdr->file_rc);

    /* Decrement file reference count on shared header */
    hdr->file_rc--;

    /* Set return value */
    ret_value = hdr->file_rc;

END_FUNC(PKG)   /* end H5FA__hdr_fuse_decr() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_modified
 *
 * Purpose:     Mark a fixed array as modified
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__hdr_modified(H5FA_hdr_t *hdr))

    /* Sanity check */
    HDassert(hdr);

    /* Mark header as dirty in cache */
    if(H5AC_mark_entry_dirty(hdr) < 0)
        H5E_THROW(H5E_CANTMARKDIRTY, "unable to mark fixed array header as dirty")

CATCH

END_FUNC(PKG)   /* end H5FA__hdr_modified() */


/*-------------------------------------------------------------------------
 * Function:	H5FA__hdr_protect
 *
 * Purpose:	Convenience wrapper around protecting fixed array header
 *
 * Return:	Non-NULL pointer to header on success/NULL on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@hdfgroup.org
 *		Aug 12 2013
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
H5FA_hdr_t *, NULL, NULL,
H5FA__hdr_protect(H5F_t *f, hid_t dxpl_id, haddr_t fa_addr, void *ctx_udata,
    unsigned flags))

    /* Local variables */
    H5FA_hdr_t *hdr;            /* Fixed array header */
    H5FA_hdr_cache_ud_t udata;  /* User data for cache callbacks */

    /* Sanity check */
    HDassert(f);
    HDassert(H5F_addr_defined(fa_addr));

    /* only the H5AC__READ_ONLY_FLAG is permitted */
    HDassert((flags & (unsigned)(~H5AC__READ_ONLY_FLAG)) == 0);

    /* Set up user data for cache callbacks */
    udata.f = f;
    udata.addr = fa_addr;
    udata.ctx_udata = ctx_udata;

    /* Protect the header */
    if(NULL == (hdr = (H5FA_hdr_t *)H5AC_protect(f, dxpl_id, H5AC_FARRAY_HDR, fa_addr, &udata, flags)))
        H5E_THROW(H5E_CANTPROTECT, "unable to protect fixed array header, address = %llu", (unsigned long long)fa_addr)
    hdr->f = f;   /* (Must be set again here, in case the header was already in the cache -QAK) */

    /* Create top proxy, if it doesn't exist */
    if(hdr->swmr_write && NULL == hdr->top_proxy) {
        /* Create 'top' proxy for fixed array entries */
        if(NULL == (hdr->top_proxy = H5AC_proxy_entry_create()))
            H5E_THROW(H5E_CANTCREATE, "can't create fixed array entry proxy")

        /* Add header as child of 'top' proxy */
        if(H5AC_proxy_entry_add_child(hdr->top_proxy, f, dxpl_id, hdr) < 0)
            H5E_THROW(H5E_CANTSET, "unable to add fixed array entry as child of array proxy")
    } /* end if */

    /* Set return value */
    ret_value = hdr;

CATCH

END_FUNC(PKG)   /* end H5FA__hdr_protect() */


/*-------------------------------------------------------------------------
 * Function:	H5FA__hdr_unprotect
 *
 * Purpose:	Convenience wrapper around unprotecting fixed array header
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@hdfgroup.org
 *		Aug 12 2013
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__hdr_unprotect(H5FA_hdr_t *hdr, hid_t dxpl_id, unsigned cache_flags))

    /* Local variables */

    /* Sanity check */
    HDassert(hdr);

    /* Unprotect the header */
    if(H5AC_unprotect(hdr->f, dxpl_id, H5AC_FARRAY_HDR, hdr->addr, hdr, cache_flags) < 0)
        H5E_THROW(H5E_CANTUNPROTECT, "unable to unprotect fixed array hdr, address = %llu", (unsigned long long)hdr->addr)

CATCH

END_FUNC(PKG)   /* end H5EA__hdr_unprotect() */


/*-------------------------------------------------------------------------
 * Function:	H5FA__hdr_delete
 *
 * Purpose:     Delete a fixed array, starting with the header
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__hdr_delete(H5FA_hdr_t *hdr, hid_t dxpl_id))

    /* Local variables */
    unsigned cache_flags = H5AC__NO_FLAGS_SET;  /* Flags for unprotecting header */

    /* Sanity check */
    HDassert(hdr);
    HDassert(!hdr->file_rc);

#ifndef NDEBUG
{
    unsigned hdr_status = 0;         /* Array header's status in the metadata cache */

    /* Check the array header's status in the metadata cache */
    if(H5AC_get_entry_status(hdr->f, hdr->addr, &hdr_status) < 0)
        H5E_THROW(H5E_CANTGET, "unable to check metadata cache status for array header")

    /* Sanity checks on array header */
    HDassert(hdr_status & H5AC_ES__IN_CACHE);
    HDassert(hdr_status & H5AC_ES__IS_PROTECTED);
} /* end block */
#endif /* NDEBUG */

    /* Check for Fixed Array Data block */
    if(H5F_addr_defined(hdr->dblk_addr)) {
        /* Delete Fixed Array Data block */
        if(H5FA__dblock_delete(hdr, dxpl_id, hdr->dblk_addr) < 0)
            H5E_THROW(H5E_CANTDELETE, "unable to delete fixed array data block")
    } /* end if */

    /* Set flags to finish deleting header on unprotect */
    cache_flags |= H5AC__DIRTIED_FLAG | H5AC__DELETED_FLAG | H5AC__FREE_FILE_SPACE_FLAG;

CATCH

    /* Unprotect the header, deleting it if an error hasn't occurred */
    if(H5AC_unprotect(hdr->f, dxpl_id, H5AC_FARRAY_HDR, hdr->addr, hdr, cache_flags) < 0)
        H5E_THROW(H5E_CANTUNPROTECT, "unable to release fixed array header")

END_FUNC(PKG)   /* end H5FA__hdr_delete() */


/*-------------------------------------------------------------------------
 * Function:    H5FA__hdr_dest
 *
 * Purpose:     Destroys a fixed array header in memory.
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5FA__hdr_dest(H5FA_hdr_t *hdr))

    /* Check arguments */
    HDassert(hdr);
    HDassert(hdr->rc == 0);

    /* Destroy the callback context */
    if(hdr->cb_ctx) {
        if((*hdr->cparam.cls->dst_context)(hdr->cb_ctx) < 0)
            H5E_THROW(H5E_CANTRELEASE, "unable to destroy fixed array client callback context")
    } /* end if */
    hdr->cb_ctx = NULL;

    /* Destroy the 'top' proxy */
    if(hdr->top_proxy) {
        if(H5AC_proxy_entry_dest(hdr->top_proxy) < 0)
            H5E_THROW(H5E_CANTRELEASE, "unable to destroy fixed array 'top' proxy")
        hdr->top_proxy = NULL;
    } /* end if */

    /* Free the shared info itself */
    hdr = H5FL_FREE(H5FA_hdr_t, hdr);

CATCH

END_FUNC(PKG)   /* end H5FA__hdr_dest() */