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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Thursday, September 28, 2000
*
* Purpose: This file contains declarations which are visible only within
* the H5F package. Source files outside the H5F package should
* include H5Fprivate.h instead.
*/
#ifndef H5F_PACKAGE
#error "Do not include this file outside the H5F package!"
#endif
#ifndef _H5Fpkg_H
#define _H5Fpkg_H
/* Get package's private header */
#include "H5Fprivate.h"
/* Other public headers needed by this file */
#include "H5Bpublic.h" /* B-tree header, for H5B_NUM_BTREE_ID */
/* Other private headers needed by this file */
#include "H5private.h" /* Generic Functions */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5FLprivate.h" /* Free Lists */
#include "H5FOprivate.h" /* File objects */
#include "H5FSprivate.h" /* File free space */
#include "H5Gprivate.h" /* Groups */
#include "H5Oprivate.h" /* Object header messages */
#include "H5RCprivate.h" /* Reference counted object functions */
/*
* Feature: Define this constant on the compiler command-line if you want to
* see some debugging messages on the debug stream.
*/
#ifdef NDEBUG
# undef H5F_DEBUG
#endif
/* Define the HDF5 file signature */
#define H5F_SIGNATURE "\211HDF\r\n\032\n"
#define H5F_SIGNATURE_LEN 8
/* Superblock status flags */
#define H5F_SUPER_WRITE_ACCESS 0x01
#define H5F_SUPER_FILE_OK 0x02
#define H5F_SUPER_ALL_FLAGS (H5F_SUPER_WRITE_ACCESS | H5F_SUPER_FILE_OK)
/* Mask for removing private file access flags */
#define H5F_ACC_PUBLIC_FLAGS 0x007fu
/* Free space section+aggregator merge flags */
#define H5F_FS_MERGE_METADATA 0x01 /* Section can merge with metadata aggregator */
#define H5F_FS_MERGE_RAWDATA 0x02 /* Section can merge with small 'raw' data aggregator */
/* Macro to abstract checking whether file is using a free space manager */
#define H5F_HAVE_FREE_SPACE_MANAGER(F) \
((F)->shared->fs_strategy == H5F_FILE_SPACE_ALL || \
(F)->shared->fs_strategy == H5F_FILE_SPACE_ALL_PERSIST)
/* Macros for encoding/decoding superblock */
#define H5F_MAX_DRVINFOBLOCK_SIZE 1024 /* Maximum size of superblock driver info buffer */
#define H5F_DRVINFOBLOCK_HDR_SIZE 16 /* Size of superblock driver info header */
/* Superblock sizes for various versions */
#define H5F_SIZEOF_CHKSUM 4 /* Checksum size in the file */
/* Fixed-size portion at the beginning of all superblocks */
#define H5F_SUPERBLOCK_FIXED_SIZE ( H5F_SIGNATURE_LEN \
+ 1) /* superblock version */
/* Macros for computing variable-size superblock size */
#define H5F_SUPERBLOCK_VARLEN_SIZE_COMMON \
(2 /* freespace, and root group versions */ \
+ 1 /* reserved */ \
+ 3 /* shared header vers, size of address, size of lengths */ \
+ 1 /* reserved */ \
+ 4 /* group leaf k, group internal k */ \
+ 4) /* consistency flags */
#define H5F_SUPERBLOCK_VARLEN_SIZE_V0(f) \
( H5F_SUPERBLOCK_VARLEN_SIZE_COMMON /* Common variable-length info */ \
+ H5F_SIZEOF_ADDR(f) /* base address */ \
+ H5F_SIZEOF_ADDR(f) /* <unused> */ \
+ H5F_SIZEOF_ADDR(f) /* EOF address */ \
+ H5F_SIZEOF_ADDR(f) /* driver block address */ \
+ H5G_SIZEOF_ENTRY(f)) /* root group ptr */
#define H5F_SUPERBLOCK_VARLEN_SIZE_V1(f) \
( H5F_SUPERBLOCK_VARLEN_SIZE_COMMON /* Common variable-length info */ \
+ 2 /* indexed B-tree internal k */ \
+ 2 /* reserved */ \
+ H5F_SIZEOF_ADDR(f) /* base address */ \
+ H5F_SIZEOF_ADDR(f) /* <unused> */ \
+ H5F_SIZEOF_ADDR(f) /* EOF address */ \
+ H5F_SIZEOF_ADDR(f) /* driver block address */ \
+ H5G_SIZEOF_ENTRY(f)) /* root group ptr */
#define H5F_SUPERBLOCK_VARLEN_SIZE_V2(f) \
( 2 /* size of address, size of lengths */ \
+ 1 /* consistency flags */ \
+ H5F_SIZEOF_ADDR(f) /* base address */ \
+ H5F_SIZEOF_ADDR(f) /* superblock extension address */ \
+ H5F_SIZEOF_ADDR(f) /* EOF address */ \
+ H5F_SIZEOF_ADDR(f) /* root group object header address */ \
+ H5F_SIZEOF_CHKSUM) /* superblock checksum (keep this last) */
#define H5F_SUPERBLOCK_VARLEN_SIZE(v, f) ( \
(v == 0 ? H5F_SUPERBLOCK_VARLEN_SIZE_V0(f) : 0) \
+ (v == 1 ? H5F_SUPERBLOCK_VARLEN_SIZE_V1(f) : 0) \
+ (v == 2 ? H5F_SUPERBLOCK_VARLEN_SIZE_V2(f) : 0))
/* Total size of superblock, depends on superblock version */
#define H5F_SUPERBLOCK_SIZE(v, f) ( H5F_SUPERBLOCK_FIXED_SIZE \
+ H5F_SUPERBLOCK_VARLEN_SIZE(v, f))
/* Forward declaration external file cache struct used below (defined in
* H5Fefc.c) */
typedef struct H5F_efc_t H5F_efc_t;
/* Structure for metadata & "small [raw] data" block aggregation fields */
struct H5F_blk_aggr_t {
unsigned long feature_flag; /* Feature flag type */
hsize_t alloc_size; /* Size for allocating new blocks */
hsize_t tot_size; /* Total amount of bytes aggregated into block */
hsize_t size; /* Current size of block left */
haddr_t addr; /* Location of block left */
};
/* Structure for metadata accumulator fields */
typedef struct H5F_meta_accum_t {
unsigned char *buf; /* Buffer to hold the accumulated metadata */
haddr_t loc; /* File location (offset) of the accumulated metadata */
size_t size; /* Size of the accumulated metadata buffer used (in bytes) */
size_t alloc_size; /* Size of the accumulated metadata buffer allocated (in bytes) */
size_t dirty_off; /* Offset of the dirty region in the accumulator buffer */
size_t dirty_len; /* Length of the dirty region in the accumulator buffer */
hbool_t dirty; /* Flag to indicate that the accumulated metadata is dirty */
} H5F_meta_accum_t;
/* Enum for free space manager state */
typedef enum H5F_fs_state_t {
H5F_FS_STATE_CLOSED, /* Free space manager is closed */
H5F_FS_STATE_OPEN, /* Free space manager has been opened */
H5F_FS_STATE_DELETING /* Free space manager is being deleted */
} H5F_fs_state_t;
/* A record of the mount table */
typedef struct H5F_mount_t {
struct H5G_t *group; /* Mount point group held open */
struct H5F_t *file; /* File mounted at that point */
} H5F_mount_t;
/*
* The mount table describes what files are attached to (mounted on) the file
* to which this table belongs.
*/
typedef struct H5F_mtab_t {
unsigned nmounts;/* Number of children which are mounted */
unsigned nalloc; /* Number of mount slots allocated */
H5F_mount_t *child; /* An array of mount records */
} H5F_mtab_t;
/* Structure specifically to store superblock. This was originally
* maintained entirely within H5F_file_t, but is now extracted
* here because the superblock is now handled by the cache */
typedef struct H5F_super_t {
H5AC_info_t cache_info; /* Cache entry information structure */
unsigned super_vers; /* Superblock version */
uint8_t status_flags; /* File status flags */
unsigned sym_leaf_k; /* Size of leaves in symbol tables */
unsigned btree_k[H5B_NUM_BTREE_ID]; /* B-tree key values for each type */
haddr_t base_addr; /* Absolute base address for rel.addrs. */
/* (superblock for file is at this offset) */
haddr_t ext_addr; /* Relative address of superblock extension */
haddr_t driver_addr; /* File driver information block address */
haddr_t root_addr; /* Root group address */
H5G_entry_t *root_ent; /* Root group symbol table entry */
} H5F_super_t;
/*
* Define the structure to store the file information for HDF5 files. One of
* these structures is allocated per file, not per H5Fopen(). That is, set of
* H5F_t structs can all point to the same H5F_file_t struct. The `nrefs'
* count in this struct indicates the number of H5F_t structs which are
* pointing to this struct.
*/
struct H5F_file_t {
H5FD_t *lf; /* Lower level file handle for I/O */
H5F_super_t *sblock; /* Pointer to (pinned) superblock for file */
unsigned nrefs; /* Ref count for times file is opened */
unsigned flags; /* Access Permissions for file */
H5F_mtab_t mtab; /* File mount table */
H5F_efc_t *efc; /* External file cache */
/* Cached values from FCPL/superblock */
uint8_t sizeof_addr; /* Size of addresses in file */
uint8_t sizeof_size; /* Size of offsets in file */
haddr_t sohm_addr; /* Relative address of shared object header message table */
unsigned sohm_vers; /* Version of shared message table on disk */
unsigned sohm_nindexes; /* Number of shared messages indexes in the table */
unsigned long feature_flags; /* VFL Driver feature Flags */
haddr_t maxaddr; /* Maximum address for file */
H5AC_t *cache; /* The object cache */
H5AC_cache_config_t
mdc_initCacheCfg; /* initial configuration for the */
/* metadata cache. This structure is */
/* fixed at creation time and should */
/* not change thereafter. */
hid_t fcpl_id; /* File creation property list ID */
H5F_close_degree_t fc_degree; /* File close behavior degree */
size_t rdcc_nslots; /* Size of raw data chunk cache (slots) */
size_t rdcc_nbytes; /* Size of raw data chunk cache (bytes) */
double rdcc_w0; /* Preempt read chunks first? [0.0..1.0]*/
size_t sieve_buf_size; /* Size of the data sieve buffer allocated (in bytes) */
hsize_t threshold; /* Threshold for alignment */
hsize_t alignment; /* Alignment */
unsigned gc_ref; /* Garbage-collect references? */
hbool_t latest_format; /* Always use the latest format? */
hbool_t store_msg_crt_idx; /* Store creation index for object header messages? */
unsigned ncwfs; /* Num entries on cwfs list */
struct H5HG_heap_t **cwfs; /* Global heap cache */
struct H5G_t *root_grp; /* Open root group */
H5FO_t *open_objs; /* Open objects in file */
H5RC_t *grp_btree_shared; /* Ref-counted group B-tree node info */
/* File space allocation information */
H5F_file_space_type_t fs_strategy; /* File space handling strategy */
hsize_t fs_threshold; /* Free space section threshold */
hbool_t use_tmp_space; /* Whether temp. file space allocation is allowed */
haddr_t tmp_addr; /* Next address to use for temp. space in the file */
unsigned fs_aggr_merge[H5FD_MEM_NTYPES]; /* Flags for whether free space can merge with aggregator(s) */
H5F_fs_state_t fs_state[H5FD_MEM_NTYPES]; /* State of free space manager for each type */
haddr_t fs_addr[H5FD_MEM_NTYPES]; /* Address of free space manager info for each type */
H5FS_t *fs_man[H5FD_MEM_NTYPES]; /* Free space manager for each file space type */
H5FD_mem_t fs_type_map[H5FD_MEM_NTYPES]; /* Mapping of "real" file space type into tracked type */
H5F_blk_aggr_t meta_aggr; /* Metadata aggregation info */
/* (if aggregating metadata allocations) */
H5F_blk_aggr_t sdata_aggr; /* "Small data" aggregation info */
/* (if aggregating "small data" allocations) */
/* Metadata accumulator information */
H5F_meta_accum_t accum; /* Metadata accumulator info */
};
/*
* This is the top-level file descriptor. One of these structures is
* allocated every time H5Fopen() is called although they may contain pointers
* to shared H5F_file_t structs.
*/
struct H5F_t {
unsigned intent; /* The flags passed to H5F_open()*/
char *open_name; /* Name used to open file */
char *actual_name; /* Actual name of the file, after resolving symlinks, etc. */
char *extpath; /* Path for searching target external link file */
H5F_file_t *shared; /* The shared file info */
unsigned nopen_objs; /* Number of open object headers*/
H5FO_t *obj_count; /* # of time each object is opened through top file structure */
hid_t file_id; /* ID of this file */
hbool_t closing; /* File is in the process of being closed */
struct H5F_t *parent; /* Parent file that this file is mounted to */
unsigned nmounts; /* Number of children mounted to this file */
};
/*****************************/
/* Package Private Variables */
/*****************************/
/* Declare a free list to manage the H5F_t struct */
H5FL_EXTERN(H5F_t);
/* Declare a free list to manage the H5F_file_t struct */
H5FL_EXTERN(H5F_file_t);
H5_DLLVAR const H5AC_class_t H5AC_SUPERBLOCK[1];
/******************************/
/* Package Private Prototypes */
/******************************/
/* General routines */
H5_DLL herr_t H5F_init(void);
H5_DLL haddr_t H5F_locate_signature(H5FD_t *file, hid_t dxpl_id);
H5_DLL herr_t H5F_flush(H5F_t *f, hid_t dxpl_id, hbool_t closing);
/* File mount related routines */
H5_DLL herr_t H5F_close_mounts(H5F_t *f);
H5_DLL int H5F_term_unmount_cb(void *obj_ptr, hid_t obj_id, void *key);
H5_DLL herr_t H5F_mount_count_ids(H5F_t *f, unsigned *nopen_files, unsigned *nopen_objs);
H5_DLL herr_t H5F_flush_mounts(H5F_t *f, hid_t dxpl_id);
/* Superblock related routines */
H5_DLL herr_t H5F_super_init(H5F_t *f, hid_t dxpl_id);
H5_DLL herr_t H5F_super_read(H5F_t *f, hid_t dxpl_id);
H5_DLL herr_t H5F_super_size(H5F_t *f, hid_t dxpl_id, hsize_t *super_size, hsize_t *super_ext_size);
H5_DLL herr_t H5F_super_free(H5F_super_t *sblock);
/* Superblock extension related routines */
H5_DLL herr_t H5F_super_ext_open(H5F_t *f, haddr_t ext_addr, H5O_loc_t *ext_ptr);
H5_DLL herr_t H5F_super_ext_write_msg(H5F_t *f, hid_t dxpl_id, void *mesg, unsigned id, hbool_t may_create);
H5_DLL herr_t H5F_super_ext_remove_msg(H5F_t *f, hid_t dxpl_id, unsigned id);
H5_DLL herr_t H5F_super_ext_close(H5F_t *f, H5O_loc_t *ext_ptr, hid_t dxpl_id,
hbool_t was_created);
/* Metadata accumulator routines */
H5_DLL herr_t H5F_accum_read(const H5F_t *f, hid_t dxpl_id, H5FD_mem_t type,
haddr_t addr, size_t size, void *buf);
H5_DLL herr_t H5F_accum_write(const H5F_t *f, hid_t dxpl_id, H5FD_mem_t type,
haddr_t addr, size_t size, const void *buf);
H5_DLL herr_t H5F_accum_free(H5F_t *f, hid_t dxpl_id, H5FD_mem_t type,
haddr_t addr, hsize_t size);
H5_DLL herr_t H5F_accum_flush(const H5F_t *f, hid_t dxpl_id);
H5_DLL herr_t H5F_accum_reset(const H5F_t *f, hid_t dxpl_id, hbool_t flush);
/* Shared file list related routines */
H5_DLL herr_t H5F_sfile_add(H5F_file_t *shared);
H5_DLL H5F_file_t * H5F_sfile_search(H5FD_t *lf);
H5_DLL herr_t H5F_sfile_remove(H5F_file_t *shared);
/* External file cache routines */
H5_DLL H5F_efc_t *H5F_efc_create(unsigned max_nfiles);
H5_DLL unsigned H5F_efc_max_nfiles(H5F_efc_t *efc);
H5_DLL herr_t H5F_efc_release(H5F_efc_t *efc);
H5_DLL herr_t H5F_efc_destroy(H5F_efc_t *efc);
H5_DLL herr_t H5F_efc_try_close(H5F_t *f);
/* Testing functions */
#ifdef H5F_TESTING
H5_DLL herr_t H5F_get_sohm_mesg_count_test(hid_t fid, unsigned type_id,
size_t *mesg_count);
H5_DLL herr_t H5F_check_cached_stab_test(hid_t file_id);
H5_DLL herr_t H5F_get_maxaddr_test(hid_t file_id, haddr_t *maxaddr);
#endif /* H5F_TESTING */
#endif /* _H5Fpkg_H */
|