summaryrefslogtreecommitdiffstats
path: root/src/H5Oprivate.h
blob: 8d0011755db05f34d4efcfc76a9c3aae7ef679bc (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
/*-------------------------------------------------------------------------
 * Copyright (C) 1997	National Center for Supercomputing Applications.
 *                      All rights reserved.
 *
 *-------------------------------------------------------------------------
 *
 * Created:		H5Oprivate.h
 * 			Aug  5 1997
 * 			Robb Matzke <matzke@llnl.gov>
 *
 * Purpose:		Object header private include file.
 *
 * Modifications:	
 *
 *-------------------------------------------------------------------------
 */
#ifndef _H5Oprivate_H
#define _H5Oprivate_H
#include <H5Opublic.h>

/* Private headers neede by this file */
#include <H5private.h>
#include <H5Fprivate.h>
#include <H5Gprivate.h>
#include <H5Tprivate.h>
#include <H5Pprivate.h>

#define H5O_MIN_SIZE	32		/*min obj header data size	*/
#define H5O_NMESGS	32		/*initial number of messages	*/
#define H5O_NCHUNKS	8		/*initial number of chunks	*/
#define H5O_NEW_MESG	(-1)		/*new message			*/
#define H5O_ALL		(-1)		/*delete all messages of type	*/

#define H5O_VERSION	1
#define H5O_ALIGNMENT	4
#define H5O_ALIGN(X,A)	((X)=(A)*(((X)+(A)-1)/(A)))

#define H5O_SIZEOF_HDR(F)						      \
   (1 +		/*version number	*/				      \
    1 +		/*alignment		*/				      \
    2 +		/*number of messages	*/				      \
    4 +		/*reference count	*/				      \
    4)		/*header data size	*/

typedef struct H5O_class_t {
   intn		id;			/*message type ID on disk	*/
   const char	*name;			/*message name for debugging	*/
   size_t	native_size;		/*size of native message	*/
   H5G_type_t	cache_type;		/*type field in symbol table	*/
   void		*(*decode)(H5F_t*,size_t,const uint8*);
   herr_t	(*encode)(H5F_t*,size_t,uint8*,const void*);
   void		*(*fast)(const H5G_cache_t*, void*);/*get from of entry	*/
   hbool_t	(*cache)(H5G_type_t*, H5G_cache_t*,const void*); /*into entry*/
   void		*(*copy)(const void*,void*); /*copy native value	*/
   size_t	(*raw_size)(H5F_t*,const void*); /*sizeof raw val	*/
   herr_t	(*reset)(void*); /*free nested data structures		*/
   herr_t	(*debug)(H5F_t*,const void*, FILE*, intn, intn);
} H5O_class_t;

typedef struct H5O_mesg_t {
   const H5O_class_t *type;		/*type of message		*/
   hbool_t	dirty;			/*raw out of date wrt native	*/
   void		*native;		/*native format message		*/
   uint8	*raw;			/*ptr to raw data		*/
   size_t	raw_size;		/*size with alignment		*/
   intn		chunkno;		/*chunk number for this mesg	*/
} H5O_mesg_t;

typedef struct H5O_chunk_t {
   hbool_t	dirty;			/*dirty flag			*/
   haddr_t	addr;			/*chunk file address		*/
   size_t	size;			/*chunk size			*/
   uint8	*image;			/*image of file			*/
} H5O_chunk_t;
   
typedef struct H5O_t {
   hbool_t	dirty;			/*out of data wrt disk		*/
   intn		version;		/*version number		*/
   intn		alignment;		/*message alignment		*/
   intn		nlink;			/*link count			*/
   intn		nmesgs;			/*number of messages		*/
   intn		alloc_nmesgs;		/*number of message slots	*/
   H5O_mesg_t	*mesg;			/*array of messages		*/
   intn		nchunks;		/*number of chunks		*/
   intn		alloc_nchunks;		/*chunks allocated		*/
   H5O_chunk_t	*chunk;			/*array of chunks		*/
} H5O_t;

/*
 * Null Message.
 */
#define H5O_NULL_ID	0x0000
extern const H5O_class_t H5O_NULL[1];

/*
 * Simple Data Space Message.
 */
#define H5O_SDSPACE_ID	0x0001
extern const H5O_class_t H5O_SDSPACE[1];
/* operates on an H5P_simple_t struct */

/*
 * Data Type Message.
 */
#define H5O_DTYPE_ID	0x0003
extern const H5O_class_t H5O_DTYPE[1];
/* operates on an H5T_t struct */

/*
 * Contiguous Data Storage Message.
 */
#define H5O_CSTORE_ID		0x0005
extern const H5O_class_t H5O_CSTORE[1];

typedef struct H5O_cstore_t {
   haddr_t	addr;
   size_t	size;
} H5O_cstore_t;

/*
 * Indexed Data Storage Message.
 */
#define H5O_ISTORE_ID		0x0008
#define H5O_ISTORE_NDIMS	32
extern const H5O_class_t H5O_ISTORE[1];

typedef struct H5O_istore_t {
   haddr_t	btree_addr;		/*file address of B-tree	*/
   uintn	ndims;			/*num dimensions in stored data	*/
   size_t	alignment[H5O_ISTORE_NDIMS];	/*algn in logical space	*/
} H5O_istore_t;

/*
 * External File List Message
 */
#define H5O_EFL_ID		0x0009
extern const H5O_class_t H5O_EFL[1];

typedef struct H5O_efl_t {
   haddr_t	heap_addr;		/*Address of name heap		*/
   uintn	nalloc;			/*Number of slots allocated	*/
   uintn	nused;			/*Number of slots used		*/
   size_t	*offset;		/*Array of name offsets in heap	*/
} H5O_efl_t;

/*
 * Object name message.
 */
#define H5O_NAME_ID	0x000d
extern const H5O_class_t H5O_NAME[1];

typedef struct H5O_name_t {
   const char	*s;			/*ptr to malloc'd memory	*/
} H5O_name_t;

/*
 * Object header continuation message.
 */
#define H5O_CONT_ID	0x0010
extern const H5O_class_t H5O_CONT[1];

typedef struct H5O_cont_t {
   haddr_t	addr;			/*address of continuation block	*/
   size_t	size;			/*size of continuation block	*/

   /* the following field(s) do not appear on disk */
   intn		chunkno;		/*chunk this mesg refers to	*/
} H5O_cont_t;

/*
 * Symbol table message.
 */
#define H5O_STAB_ID	0x0011
extern const H5O_class_t H5O_STAB[1];

typedef struct H5O_stab_t {
   haddr_t	btree_addr;		/*address of B-tree		*/
   haddr_t	heap_addr;		/*address of name heap		*/
} H5O_stab_t;



herr_t H5O_create (H5F_t *f, intn nlink, size_t size_hint, haddr_t*);
intn H5O_link (H5F_t *f, H5G_entry_t *ent, intn adjust);
void *H5O_read (H5F_t *f, const haddr_t *addr, H5G_entry_t *ent,
		const H5O_class_t *type, intn sequence, void *mesg);
const void *H5O_peek (H5F_t *f, const haddr_t *addr, const H5O_class_t *type,
		      intn sequence);
intn H5O_modify (H5F_t *f, const haddr_t *addr, H5G_entry_t *ent,
		 const H5O_class_t *type, intn overwrite, const void *mesg);
herr_t H5O_remove (H5F_t *f, const haddr_t *addr, H5G_entry_t *ent,
		   const H5O_class_t *type, intn sequence);
herr_t H5O_reset (const H5O_class_t *type, void *native);
herr_t H5O_debug (H5F_t *f, const haddr_t *addr, FILE *stream,
		  intn indent, intn fwidth);

#endif