summaryrefslogtreecommitdiffstats
path: root/src/H5Fprivate.h
blob: fb28c4e8efd8f4b7e671548ae0b3f982b1ac4aaa (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * This file contains macros & information for file access
 */

#ifndef _H5Fprivate_H
#define _H5Fprivate_H

/* Include package's public header */
#include "H5Fpublic.h"

/* Public headers needed by this file */
#include "H5FDpublic.h"		/* File drivers				*/

/* Private headers needed by this file */

/****************************/
/* Library Private Typedefs */
/****************************/

/* Main file structure */
typedef struct H5F_t H5F_t;

/* Block aggregation structure */
typedef struct H5F_blk_aggr_t H5F_blk_aggr_t;

/*===----------------------------------------------------------------------===
 *                              Flush Flags
 *===----------------------------------------------------------------------===
 *
 *  Flags passed into the flush routines which indicate what type of
 *  flush we want to do. They can be ORed together.
 */
#define H5F_FLUSH_NONE       (0U)       /* No flags specified                       */
#define H5F_FLUSH_INVALIDATE (1U << 0)  /* Invalidate cached data                   */
#define H5F_FLUSH_CLOSING    (1U << 1)  /* Closing the file                         */

/*
 * Encode and decode macros for file meta-data.
 * Currently, all file meta-data is little-endian.
 */

#  define INT16ENCODE(p, i) {						      \
   *(p) = (uint8_t)( (unsigned)(i)	 & 0xff); (p)++;		      \
   *(p) = (uint8_t)(((unsigned)(i) >> 8) & 0xff); (p)++;		      \
}

#  define UINT16ENCODE(p, i) {						      \
   *(p) = (uint8_t)( (unsigned)(i)	 & 0xff); (p)++;		      \
   *(p) = (uint8_t)(((unsigned)(i) >> 8) & 0xff); (p)++;		      \
}

#  define INT32ENCODE(p, i) {						      \
   *(p) = (uint8_t)( (uint32_t)(i)	  & 0xff); (p)++;		      \
   *(p) = (uint8_t)(((uint32_t)(i) >>  8) & 0xff); (p)++;		      \
   *(p) = (uint8_t)(((uint32_t)(i) >> 16) & 0xff); (p)++;		      \
   *(p) = (uint8_t)(((uint32_t)(i) >> 24) & 0xff); (p)++;		      \
}

#  define UINT32ENCODE(p, i) {						      \
   *(p) = (uint8_t)( (i)        & 0xff); (p)++;				      \
   *(p) = (uint8_t)(((i) >>  8) & 0xff); (p)++;				      \
   *(p) = (uint8_t)(((i) >> 16) & 0xff); (p)++;				      \
   *(p) = (uint8_t)(((i) >> 24) & 0xff); (p)++;				      \
}

/* Encode a 32-bit unsigned integer into a variable-sized buffer */
/* (Assumes that the high bits of the integer are zero) */
#  define UINT32ENCODE_VAR(p, n, l) {					      \
   uint32_t _n = (n);							      \
   size_t _i;								      \
   uint8_t *_p = (uint8_t*)(p);						      \
									      \
   for(_i = 0; _i < l; _i++, _n >>= 8)					      \
      *_p++ = (uint8_t)(_n & 0xff);					      \
   (p) = (uint8_t*)(p) + l;						      \
}

#  define INT64ENCODE(p, n) {						      \
   int64_t _n = (n);							      \
   size_t _i;								      \
   uint8_t *_p = (uint8_t*)(p);						      \
									      \
   for (_i = 0; _i < sizeof(int64_t); _i++, _n >>= 8)			      \
      *_p++ = (uint8_t)(_n & 0xff);					      \
   for (/*void*/; _i < 8; _i++)						      \
      *_p++ = (n) < 0 ? 0xff : 0;					      \
   (p) = (uint8_t*)(p)+8;						      \
}

#  define UINT64ENCODE(p, n) {						      \
   uint64_t _n = (n);							      \
   size_t _i;								      \
   uint8_t *_p = (uint8_t*)(p);						      \
									      \
   for (_i = 0; _i < sizeof(uint64_t); _i++, _n >>= 8)			      \
      *_p++ = (uint8_t)(_n & 0xff);					      \
   for (/*void*/; _i < 8; _i++)						      \
      *_p++ = 0;							      \
   (p) = (uint8_t*)(p) + 8;						      \
}

/* Encode a 64-bit unsigned integer into a variable-sized buffer */
/* (Assumes that the high bits of the integer are zero) */
#  define UINT64ENCODE_VAR(p, n, l) {					      \
   uint64_t _n = (n);							      \
   size_t _i;								      \
   uint8_t *_p = (uint8_t*)(p);						      \
									      \
   for(_i = 0; _i < l; _i++, _n >>= 8)					      \
      *_p++ = (uint8_t)(_n & 0xff);					      \
   (p) = (uint8_t*)(p) + l;						      \
}

/* DECODE converts little endian bytes pointed by p to integer values and store
 * it in i.  For signed values, need to do sign-extension when converting
 * the last byte which carries the sign bit.
 * The macros does not require i be of a certain byte sizes.  It just requires
 * i be big enough to hold the intended value range.  E.g. INT16DECODE works
 * correctly even if i is actually a 64bit int like in a Cray.
 */

#  define INT16DECODE(p, i) {						      \
   (i)	= (int16_t)((*(p) & 0xff));      (p)++;				      \
   (i) |= (int16_t)(((*(p) & 0xff) << 8) |                                    \
                   ((*(p) & 0x80) ? ~0xffff : 0x0)); (p)++;		      \
}

#  define UINT16DECODE(p, i) {						      \
   (i)	= (uint16_t) (*(p) & 0xff);	  (p)++;			      \
   (i) |= (uint16_t)((*(p) & 0xff) << 8); (p)++;			      \
}

#  define INT32DECODE(p, i) {						      \
   (i)	= (	     *(p) & 0xff);	  (p)++;			      \
   (i) |= ((int32_t)(*(p) & 0xff) <<  8); (p)++;			      \
   (i) |= ((int32_t)(*(p) & 0xff) << 16); (p)++;			      \
   (i) |= ((int32_t)(((*(p) & 0xff) << 24) |                                  \
                   ((*(p) & 0x80) ? ~0xffffffff : 0x0))); (p)++;	      \
}

#  define UINT32DECODE(p, i) {						      \
   (i)	=  (uint32_t)(*(p) & 0xff);	   (p)++;			      \
   (i) |= ((uint32_t)(*(p) & 0xff) <<  8); (p)++;			      \
   (i) |= ((uint32_t)(*(p) & 0xff) << 16); (p)++;			      \
   (i) |= ((uint32_t)(*(p) & 0xff) << 24); (p)++;			      \
}

/* Decode a variable-sized buffer into a 32-bit unsigned integer */
/* (Assumes that the high bits of the integer will be zero) */
/* (Note: this is exactly the same code as the 64-bit variable-length decoder
 *      and bugs/improvements should be make in both places - QAK)
 */
#  define UINT32DECODE_VAR(p, n, l) {					      \
   size_t _i;								      \
									      \
   n = 0;								      \
   (p) += l;								      \
   for (_i = 0; _i < l; _i++)						      \
      n = (n << 8) | *(--p);						      \
   (p) += l;								      \
}

#  define INT64DECODE(p, n) {						      \
   /* WE DON'T CHECK FOR OVERFLOW! */					      \
   size_t _i;								      \
									      \
   n = 0;								      \
   (p) += 8;								      \
   for (_i = 0; _i < sizeof(int64_t); _i++)					      \
      n = (n << 8) | *(--p);						      \
   (p) += 8;								      \
}

#  define UINT64DECODE(p, n) {						      \
   /* WE DON'T CHECK FOR OVERFLOW! */					      \
   size_t _i;								      \
									      \
   n = 0;								      \
   (p) += 8;								      \
   for (_i = 0; _i < sizeof(uint64_t); _i++)				      \
      n = (n << 8) | *(--p);						      \
   (p) += 8;								      \
}

/* Decode a variable-sized buffer into a 64-bit unsigned integer */
/* (Assumes that the high bits of the integer will be zero) */
/* (Note: this is exactly the same code as the 32-bit variable-length decoder
 *      and bugs/improvements should be make in both places - QAK)
 */
#  define UINT64DECODE_VAR(p, n, l) {					      \
   size_t _i;								      \
									      \
   n = 0;								      \
   (p) += l;								      \
   for (_i = 0; _i < l; _i++)						      \
      n = (n << 8) | *(--p);						      \
   (p) += l;								      \
}

/* Address-related macros */
#define H5F_addr_overflow(X,Z)	(HADDR_UNDEF==(X) ||			      \
				 HADDR_UNDEF==(X)+(haddr_t)(Z) ||	      \
				 (X)+(haddr_t)(Z)<(X))
#define H5F_addr_hash(X,M)	((unsigned)((X)%(M)))
#define H5F_addr_defined(X)	((X)!=HADDR_UNDEF)
/* The H5F_addr_eq() macro guarantees that Y is not HADDR_UNDEF by making
 * certain that X is not HADDR_UNDEF and then checking that X equals Y
 */
#define H5F_addr_eq(X,Y)	((X)!=HADDR_UNDEF &&			      \
				 (X)==(Y))
#define H5F_addr_ne(X,Y)	(!H5F_addr_eq((X),(Y)))
#define H5F_addr_lt(X,Y) 	((X)!=HADDR_UNDEF &&			      \
				 (Y)!=HADDR_UNDEF &&			      \
				 (X)<(Y))
#define H5F_addr_le(X,Y)	((X)!=HADDR_UNDEF &&			      \
				 (Y)!=HADDR_UNDEF &&			      \
				 (X)<=(Y))
#define H5F_addr_gt(X,Y)	((X)!=HADDR_UNDEF &&			      \
				 (Y)!=HADDR_UNDEF &&			      \
				 (X)>(Y))
#define H5F_addr_ge(X,Y)	((X)!=HADDR_UNDEF &&			      \
				 (Y)!=HADDR_UNDEF &&			      \
				 (X)>=(Y))
#define H5F_addr_cmp(X,Y)	(H5F_addr_eq((X), (Y)) ? 0 :		      \
				 (H5F_addr_lt((X), (Y)) ? -1 : 1))
#define H5F_addr_pow2(N)	((haddr_t)1<<(N))
#define H5F_addr_overlap(O1,L1,O2,L2) (((O1) < (O2) && ((O1) + (L1)) > (O2)) || \
                                 ((O1) >= (O2) && (O1) < ((O2) + (L2))))

/* If the module using this macro is allowed access to the private variables, access them directly */
#ifdef H5F_PACKAGE
#define H5F_INTENT(F)           ((F)->intent)
#define H5F_FCPL(F)             ((F)->shared->fcpl_id)
#define H5F_SIZEOF_ADDR(F)      ((F)->shared->sizeof_addr)
#define H5F_SIZEOF_SIZE(F)      ((F)->shared->sizeof_size)
#define H5F_SYM_LEAF_K(F)       ((F)->shared->sym_leaf_k)
#define H5F_KVALUE(F,T)         ((F)->shared->btree_k[(T)->id])
#define H5F_RDCC_NSLOTS(F)      ((F)->shared->rdcc_nslots)
#define H5F_RDCC_NBYTES(F)      ((F)->shared->rdcc_nbytes)
#define H5F_RDCC_W0(F)          ((F)->shared->rdcc_w0)
#define H5F_BASE_ADDR(F)        ((F)->shared->base_addr)
#define H5F_GRP_BTREE_SHARED(F) ((F)->shared->grp_btree_shared)
#define H5F_SIEVE_BUF_SIZE(F)   ((F)->shared->sieve_buf_size)
#define H5F_GC_REF(F)           ((F)->shared->gc_ref)
#define H5F_USE_LATEST_FORMAT(F) ((F)->shared->latest_format)
#define H5F_EXTPATH(F)          ((F)->extpath)
#define H5F_GET_FC_DEGREE(F)    ((F)->shared->fc_degree)
#define H5F_STORE_MSG_CRT_IDX(F)    ((F)->shared->store_msg_crt_idx)
#define H5F_HAS_FEATURE(F,FL)   ((F)->shared->lf->feature_flags & (FL))
#define H5F_DRIVER_ID(F)        ((F)->shared->lf->driver_id)
#define H5F_GET_FILENO(F,FILENUM) ((FILENUM) = (F)->shared->lf->fileno)
#else /* H5F_PACKAGE */
#define H5F_INTENT(F)           (H5F_get_intent(F))
#define H5F_FCPL(F)             (H5F_get_fcpl(F))
#define H5F_SIZEOF_ADDR(F)      (H5F_sizeof_addr(F))
#define H5F_SIZEOF_SIZE(F)      (H5F_sizeof_size(F))
#define H5F_SYM_LEAF_K(F)       (H5F_sym_leaf_k(F))
#define H5F_KVALUE(F,T)         (H5F_Kvalue(F,T))
#define H5F_RDCC_NSLOTS(F)      (H5F_rdcc_nslots(F))
#define H5F_RDCC_NBYTES(F)      (H5F_rdcc_nbytes(F))
#define H5F_RDCC_W0(F)          (H5F_rdcc_w0(F))
#define H5F_BASE_ADDR(F)        (H5F_get_base_addr(F))
#define H5F_GRP_BTREE_SHARED(F) (H5F_grp_btree_shared(F))
#define H5F_SIEVE_BUF_SIZE(F)   (H5F_sieve_buf_size(F))
#define H5F_GC_REF(F)           (H5F_gc_ref(F))
#define H5F_USE_LATEST_FORMAT(F) (H5F_use_latest_format(F))
#define H5F_EXTPATH(F)          (H5F_get_extpath(F))
#define H5F_GET_FC_DEGREE(F)    (H5F_get_fc_degree(F))
#define H5F_STORE_MSG_CRT_IDX(F) (H5F_store_msg_crt_idx(F))
#define H5F_HAS_FEATURE(F,FL)   (H5F_has_feature(F,FL))
#define H5F_DRIVER_ID(F)        (H5F_get_driver_id(F))
#define H5F_GET_FILENO(F,FILENUM) (H5F_get_fileno((F), &(FILENUM)))
#endif /* H5F_PACKAGE */


/* Macros to encode/decode offset/length's for storing in the file */
#define H5F_ENCODE_OFFSET(f,p,o) switch(H5F_SIZEOF_ADDR(f)) {		      \
    case 4: UINT32ENCODE(p,o); break;					      \
    case 8: UINT64ENCODE(p,o); break;					      \
    case 2: UINT16ENCODE(p,o); break;					      \
}

#define H5F_DECODE_OFFSET(f,p,o) switch (H5F_SIZEOF_ADDR (f)) {		      \
    case 4: UINT32DECODE(p, o); break;					      \
    case 8: UINT64DECODE(p, o); break;					      \
    case 2: UINT16DECODE(p, o); break;					      \
}

#define H5F_ENCODE_LENGTH(f,p,l) switch(H5F_SIZEOF_SIZE(f)) {		      \
    case 4: UINT32ENCODE(p,l); break;					      \
    case 8: UINT64ENCODE(p,l); break;					      \
    case 2: UINT16ENCODE(p,l); break;					      \
    default: HDassert("bad sizeof size" && 0);				      \
}

#define H5F_DECODE_LENGTH(f,p,l) switch(H5F_SIZEOF_SIZE(f)) {		      \
    case 4: UINT32DECODE(p,l); break;					      \
    case 8: UINT64DECODE(p,l); break;					      \
    case 2: UINT16DECODE(p,l); break;					      \
    default: HDassert("bad sizeof size" && 0);				      \
}

/*
 * Macros that check for overflows.  These are somewhat dangerous to fiddle
 * with.
 */
#if (H5_SIZEOF_SIZE_T >= H5_SIZEOF_OFF_T)
#   define H5F_OVERFLOW_SIZET2OFFT(X)					      \
    ((size_t)(X)>=(size_t)((size_t)1<<(8*sizeof(off_t)-1)))
#else
#   define H5F_OVERFLOW_SIZET2OFFT(X) 0
#endif
#if (H5_SIZEOF_HSIZE_T >= H5_SIZEOF_OFF_T)
#   define H5F_OVERFLOW_HSIZET2OFFT(X)					      \
    ((hsize_t)(X)>=(hsize_t)((hsize_t)1<<(8*sizeof(off_t)-1)))
#else
#   define H5F_OVERFLOW_HSIZET2OFFT(X) 0
#endif

/* Sizes of object addresses & sizes in the file (in bytes) */
#define H5F_OBJ_ADDR_SIZE   sizeof(haddr_t)
#define H5F_OBJ_SIZE_SIZE   sizeof(hsize_t)

/* File-wide default character encoding can not yet be set via the file
 * creation property list and is always ASCII. */
#define H5F_DEFAULT_CSET H5T_CSET_ASCII

/* ========= File Creation properties ============ */
#define H5F_CRT_USER_BLOCK_NAME      "block_size"       /* Size of the file user block in bytes */
#define H5F_CRT_SYM_LEAF_NAME        "symbol_leaf"      /* 1/2 rank for symbol table leaf nodes */
#define H5F_CRT_SYM_LEAF_DEF         4
#define H5F_CRT_BTREE_RANK_NAME      "btree_rank"       /* 1/2 rank for btree internal nodes    */
#define H5F_CRT_ADDR_BYTE_NUM_NAME   "addr_byte_num"    /* Byte number in an address            */
#define H5F_CRT_OBJ_BYTE_NUM_NAME    "obj_byte_num"     /* Byte number for object size          */
#define H5F_CRT_SUPER_VERS_NAME      "super_version"    /* Version number of the superblock     */
#define H5F_CRT_SHMSG_NINDEXES_NAME  "num_shmsg_indexes" /* Number of shared object header message indexes */
#define H5F_CRT_SHMSG_INDEX_TYPES_NAME "shmsg_message_types" /* Types of message in each index */
#define H5F_CRT_SHMSG_INDEX_MINSIZE_NAME "shmsg_message_minsize" /* Minimum size of messages in each index */
#define H5F_CRT_SHMSG_LIST_MAX_NAME  "shmsg_list_max"   /* Shared message list maximum size */
#define H5F_CRT_SHMSG_BTREE_MIN_NAME "shmsg_btree_min"  /* Shared message B-tree minimum size */



/* ========= File Access properties ============ */
#define H5F_ACS_META_CACHE_INIT_CONFIG_NAME	"mdc_initCacheCfg" /* Initial metadata cache resize configuration */
#define H5F_ACS_DATA_CACHE_NUM_SLOTS_NAME       "rdcc_nslots"   /* Size of raw data chunk cache(slots) */
#define H5F_ACS_DATA_CACHE_BYTE_SIZE_NAME       "rdcc_nbytes"   /* Size of raw data chunk cache(bytes) */
#define H5F_ACS_PREEMPT_READ_CHUNKS_NAME        "rdcc_w0"       /* Preemption read chunks first */
#define H5F_ACS_ALIGN_THRHD_NAME                "threshold"     /* Threshold for alignment */
#define H5F_ACS_ALIGN_NAME                      "align"         /* Alignment */
#define H5F_ACS_META_BLOCK_SIZE_NAME            "meta_block_size" /* Minimum metadata allocation block size (when aggregating metadata allocations) */
#define H5F_ACS_SIEVE_BUF_SIZE_NAME             "sieve_buf_size" /* Maximum sieve buffer size (when data sieving is allowed by file driver) */
#define H5F_ACS_SDATA_BLOCK_SIZE_NAME           "sdata_block_size" /* Minimum "small data" allocation block size (when aggregating "small" raw data allocations) */
#define H5F_ACS_GARBG_COLCT_REF_NAME            "gc_ref"        /* Garbage-collect references */
#define H5F_ACS_FILE_DRV_ID_NAME                "driver_id"     /* File driver ID */
#define H5F_ACS_FILE_DRV_INFO_NAME              "driver_info"   /* File driver info */
#define H5F_ACS_CLOSE_DEGREE_NAME		"close_degree"  /* File close degree */
#define H5F_ACS_FAMILY_OFFSET_NAME              "family_offset" /* Offset position in file for family file driver */
#define H5F_ACS_FAMILY_NEWSIZE_NAME             "family_newsize" /* New member size of family driver.  (private property only used by h5repart) */
#define H5F_ACS_FAMILY_TO_SEC2_NAME             "family_to_sec2" /* Whether to convert family to sec2 driver.  (private property only used by h5repart) */
#define H5F_ACS_MULTI_TYPE_NAME                 "multi_type"    /* Data type in multi file driver */
#define H5F_ACS_LATEST_FORMAT_NAME              "latest_format" /* 'Use latest format version' flag */

/* ======================== File Mount properties ====================*/
#define H5F_MNT_SYM_LOCAL_NAME 		"local"                 /* Whether absolute symlinks local to file. */


#ifdef H5_HAVE_PARALLEL
/* Which process writes metadata */
#define H5_PAR_META_WRITE 0
#endif /* H5_HAVE_PARALLEL */

/* Version #'s of the major components of the file format */
#define HDF5_SUPERBLOCK_VERSION_DEF	0	/* The default super block format	  */
#define HDF5_SUPERBLOCK_VERSION_1	1	/* Version with non-default B-tree 'K' value */
#define HDF5_SUPERBLOCK_VERSION_2	2	/* Revised version with superblock extension and checksum */
#define HDF5_SUPERBLOCK_VERSION_LATEST	HDF5_SUPERBLOCK_VERSION_2	/* The maximum super block format    */
#define HDF5_FREESPACE_VERSION	        0	/* of the Free-Space Info	  */
#define HDF5_OBJECTDIR_VERSION	        0	/* of the Object Directory format */
#define HDF5_SHAREDHEADER_VERSION       0	/* of the Shared-Header Info	  */
#define HDF5_DRIVERINFO_VERSION_0       0	/* of the Driver Information Block*/

/* B-tree internal 'K' values */
#define HDF5_BTREE_SNODE_IK_DEF         16
#define HDF5_BTREE_CHUNK_IK_DEF         32      /* Note! this value is assumed
                                                    to be 32 for version 0
                                                    of the superblock and
                                                    if it is changed, the code
                                                    must compensate. -QAK
                                                 */

/* Macros to define signatures of all objects in the file */

/* Size of signature information (on disk) */
/* (all on-disk signatures should be this length) */
#define H5_SIZEOF_MAGIC               4

/* v1 B-tree node signature */
#define H5B_MAGIC	                "TREE"

/* v2 B-tree signatures */
#define H5B2_HDR_MAGIC                  "BTHD"          /* Header */
#define H5B2_INT_MAGIC                  "BTIN"          /* Internal node */
#define H5B2_LEAF_MAGIC                 "BTLF"          /* Leaf node */

/* Extensible array signatures */
#define H5EA_HDR_MAGIC                  "EAHD"          /* Header */
#define H5EA_IBLOCK_MAGIC               "EAIB"          /* Index block */
#define H5EA_SBLOCK_MAGIC               "EASB"          /* Super block */
#define H5EA_DBLOCK_MAGIC               "EADB"          /* Data block */

/* Free space signatures */
#define H5FS_HDR_MAGIC                  "FSHD"          /* Header */
#define H5FS_SINFO_MAGIC                "FSSE"          /* Serialized sections */

/* Symbol table node signature */
#define H5G_NODE_MAGIC                  "SNOD"

/* Fractal heap signatures */
#define H5HF_HDR_MAGIC                  "FRHP"          /* Header */
#define H5HF_IBLOCK_MAGIC               "FHIB"          /* Indirect block */
#define H5HF_DBLOCK_MAGIC               "FHDB"          /* Direct block */

/* Global heap signature */
#define H5HG_MAGIC	                "GCOL"

/* Local heap signature */
#define H5HL_MAGIC                      "HEAP"

/* Object header signatures */
#define H5O_HDR_MAGIC                   "OHDR"          /* Header */
#define H5O_CHK_MAGIC                   "OCHK"          /* Continuation chunk */

/* Shared Message signatures */
#define H5SM_TABLE_MAGIC                "SMTB"          /* Shared Message Table */
#define H5SM_LIST_MAGIC                 "SMLI"          /* Shared Message List */


/* Forward declarations for prototype arguments */
struct H5B_class_t;
struct H5RC_t;

/* Private functions */
H5_DLL H5F_t *H5F_open(const char *name, unsigned flags, hid_t fcpl_id,
    hid_t fapl_id, hid_t dxpl_id);
H5_DLL herr_t H5F_try_close(H5F_t *f);
H5_DLL unsigned H5F_incr_nopen_objs(H5F_t *f);
H5_DLL unsigned H5F_decr_nopen_objs(H5F_t *f);

/* Functions than retrieve values from the file struct */
H5_DLL unsigned H5F_get_intent(const H5F_t *f);
H5_DLL hid_t H5F_get_access_plist(H5F_t *f, hbool_t app_ref);
H5_DLL char *H5F_get_extpath(const H5F_t *f);
H5_DLL hid_t H5F_get_id(H5F_t *file, hbool_t app_ref);
H5_DLL size_t H5F_get_obj_count(const H5F_t *f, unsigned types, hbool_t app_ref);
H5_DLL size_t H5F_get_obj_ids(const H5F_t *f, unsigned types, size_t max_objs, hid_t *obj_id_list, hbool_t app_ref);

/* Functions than retrieve values set/cached from the superblock/FCPL */
H5_DLL hid_t H5F_get_fcpl(const H5F_t *f);
H5_DLL size_t H5F_sizeof_addr(const H5F_t *f);
H5_DLL size_t H5F_sizeof_size(const H5F_t *f);
H5_DLL unsigned H5F_sym_leaf_k(const H5F_t *f);
H5_DLL unsigned H5F_Kvalue(const H5F_t *f, const struct H5B_class_t *type);
H5_DLL size_t H5F_rdcc_nbytes(const H5F_t *f);
H5_DLL size_t H5F_rdcc_nslots(const H5F_t *f);
H5_DLL double H5F_rdcc_w0(const H5F_t *f);
H5_DLL haddr_t H5F_get_base_addr(const H5F_t *f);
H5_DLL struct H5RC_t *H5F_grp_btree_shared(const H5F_t *f);
H5_DLL size_t H5F_sieve_buf_size(const H5F_t *f);
H5_DLL unsigned H5F_gc_ref(const H5F_t *f);
H5_DLL hbool_t H5F_use_latest_format(const H5F_t *f);
H5_DLL H5F_close_degree_t H5F_get_fc_degree(const H5F_t *f);
H5_DLL hbool_t H5F_store_msg_crt_idx(const H5F_t *f);

/* Functions that retrieve values from VFD layer */
H5_DLL hbool_t H5F_has_feature(const H5F_t *f, unsigned feature);
H5_DLL hid_t H5F_get_driver_id(const H5F_t *f);
H5_DLL herr_t H5F_get_fileno(const H5F_t *f, unsigned long *filenum);
H5_DLL haddr_t H5F_get_eoa(const H5F_t *f, H5FD_mem_t type);

/* Functions than check file mounting information */
H5_DLL hbool_t H5F_is_mount(const H5F_t *file);
H5_DLL hbool_t H5F_has_mount(const H5F_t *file);

/* Functions that operate on blocks of bytes wrt super block */
H5_DLL herr_t H5F_block_read(const H5F_t *f, H5FD_mem_t type, haddr_t addr,
                size_t size, hid_t dxpl_id, void *buf/*out*/);
H5_DLL herr_t H5F_block_write(const H5F_t *f, H5FD_mem_t type, haddr_t addr,
                size_t size, hid_t dxpl_id, const void *buf);

/* Address-related functions */
H5_DLL void H5F_addr_encode(const H5F_t *, uint8_t** /*in,out*/, haddr_t);
H5_DLL void H5F_addr_decode(const H5F_t *, const uint8_t** /*in,out*/,
			     haddr_t* /*out*/);

/* File access property list callbacks */
H5_DLL herr_t H5P_facc_close(hid_t dxpl_id, void *close_data);

/* Shared file list related routines */
H5_DLL herr_t H5F_sfile_assert_num(unsigned n);

/* Routines for creating & destroying "fake" file structures */
H5_DLL H5F_t *H5F_fake_alloc(size_t sizeof_size);
H5_DLL herr_t H5F_fake_free(H5F_t *f);

/* Parallel I/O (i.e. MPI) related routines */
#ifdef H5_HAVE_PARALLEL
H5_DLL int H5F_mpi_get_rank(const H5F_t *f);
H5_DLL MPI_Comm H5F_mpi_get_comm(const H5F_t *f);
H5_DLL int H5F_mpi_get_size(const H5F_t *f);
#endif /* H5_HAVE_PARALLEL */

/* Debugging functions */
H5_DLL herr_t H5F_debug(H5F_t *f, FILE * stream, int indent, int fwidth);

#endif /* _H5Fprivate_H */