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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5BTcache.c
* Mar 10 2005
* Quincey Koziol <koziol@ncsa.uiuc.edu>
*
* Purpose: Implement block tracker metadata cache methods.
*
*-------------------------------------------------------------------------
*/
#define H5BT_PACKAGE /*suppress error about including H5SHpkg */
/* Private headers */
#include "H5private.h" /* Generic Functions */
#include "H5BTpkg.h" /* Block tracker */
#include "H5Eprivate.h" /* Error handling */
/* Local macros */
/* Block tracker format version #'s */
#define H5BT_VERSION 0
/* Local typedefs */
/* Local prototypes */
/* Metadata cache callbacks */
static H5BT_t *H5BT_cache_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *_type, void *udata);
static herr_t H5BT_cache_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5BT_t *b);
static herr_t H5BT_cache_clear(H5F_t *f, H5BT_t *b, hbool_t destroy);
static herr_t H5BT_cache_size(const H5F_t *f, const H5BT_t *bt, size_t *size_ptr);
/* Package variables */
/* H5BT inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_BLTR[1] = {{
H5AC_BLTR_ID,
(H5AC_load_func_t)H5BT_cache_load,
(H5AC_flush_func_t)H5BT_cache_flush,
(H5AC_dest_func_t)H5BT_cache_dest,
(H5AC_clear_func_t)H5BT_cache_clear,
(H5AC_size_func_t)H5BT_cache_size,
}};
/* Static variables */
/* Declare a free list to manage block tracker data to/from disk */
H5FL_BLK_DEFINE_STATIC(info_block);
/*-------------------------------------------------------------------------
* Function: H5BT_cache_load
*
* Purpose: Loads block tracker info from the disk.
*
* Return: Success: Pointer to a new block tracker
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Mar 10 2005
*
*-------------------------------------------------------------------------
*/
static H5BT_t *
H5BT_cache_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void UNUSED *udata1, void UNUSED *udata2)
{
H5BT_t *bt = NULL;
size_t size;
uint8_t *buf = NULL;
uint8_t *p; /* Pointer into raw data buffer */
H5BT_t *ret_value;
FUNC_ENTER_NOAPI(H5BT_cache_load, NULL)
/* Check arguments */
HDassert(f);
HDassert(H5F_addr_defined(addr));
if (NULL==(bt = H5FL_MALLOC(H5BT_t)))
HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
HDmemset(&bt->cache_info,0,sizeof(H5AC_info_t));
/* Compute the size of the block tracker on disk */
size = H5BT_SIZE(f);
/* Allocate temporary buffer */
if ((buf=H5FL_BLK_MALLOC(info_block,size))==NULL)
HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed");
/* Read header from disk */
if (H5F_block_read(f, H5FD_MEM_BLKTRK, addr, size, dxpl_id, buf)<0)
HGOTO_ERROR(H5E_BLKTRK, H5E_READERROR, NULL, "can't read block tracker info")
p = buf;
/* magic number */
if (HDmemcmp(p, H5BT_MAGIC, H5BT_SIZEOF_MAGIC))
HGOTO_ERROR(H5E_BLKTRK, H5E_CANTLOAD, NULL, "wrong block tracker info signature")
p += H5BT_SIZEOF_MAGIC;
/* version */
if (*p++ != H5BT_VERSION)
HGOTO_ERROR(H5E_BLKTRK, H5E_CANTLOAD, NULL, "wrong block tracker info version")
/* Size status information */
bt->status = *p++;
/* Max. block size info */
H5F_DECODE_LENGTH(f, p, bt->max_block_size);
UINT32DECODE(p, bt->max_block_cnt);
/* Min. block size info */
H5F_DECODE_LENGTH(f, p, bt->min_block_size);
UINT32DECODE(p, bt->min_block_cnt);
/* Total size of all blocks tracked */
H5F_DECODE_LENGTH(f, p, bt->tot_block_size);
/* Address of B-tree for blocks */
H5F_addr_decode(f, (const uint8_t **)&p, &(bt->bt2_addr));
/* Set return value */
ret_value = bt;
done:
if(buf)
H5FL_BLK_FREE(info_block,buf);
if (!ret_value && bt)
(void)H5BT_cache_dest(f,bt);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5BT_cache_load() */
/*-------------------------------------------------------------------------
* Function: H5BT_cache_flush
*
* Purpose: Flushes dirty block tracker info to disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Mar 10 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5BT_cache_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5BT_t *bt)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5BT_cache_flush, FAIL)
/* check arguments */
HDassert(f);
HDassert(H5F_addr_defined(addr));
HDassert(bt);
if (bt->cache_info.is_dirty) {
uint8_t *buf = NULL;
uint8_t *p; /* Pointer into raw data buffer */
size_t size;
/* Compute the size of the block tracker info on disk */
size = H5BT_SIZE(f);
/* Allocate temporary buffer */
if ((buf=H5FL_BLK_MALLOC(info_block,size))==NULL)
HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
p = buf;
/* magic number */
HDmemcpy(p, H5BT_MAGIC, H5BT_SIZEOF_MAGIC);
p += H5BT_SIZEOF_MAGIC;
/* version # */
*p++ = H5BT_VERSION;
/* Size status information */
*p++ = bt->status;
/* Max. block size info */
H5F_ENCODE_LENGTH(f, p, bt->max_block_size);
UINT32ENCODE(p, bt->max_block_cnt);
/* Min. block size info */
H5F_ENCODE_LENGTH(f, p, bt->min_block_size);
UINT32ENCODE(p, bt->min_block_cnt);
/* Total size of all blocks tracked */
H5F_ENCODE_LENGTH(f, p, bt->tot_block_size);
/* Address of B-tree for blocks */
H5F_addr_encode(f, &p, bt->bt2_addr);
/* Write the block tracker info. */
if (H5F_block_write(f, H5FD_MEM_BLKTRK, addr, size, dxpl_id, buf) < 0)
HGOTO_ERROR(H5E_BLKTRK, H5E_CANTFLUSH, FAIL, "unable to save block tracker info to disk")
H5FL_BLK_FREE(info_block,buf);
bt->cache_info.is_dirty = FALSE;
} /* end if */
if (destroy)
if (H5BT_cache_dest(f,bt) < 0)
HGOTO_ERROR(H5E_BLKTRK, H5E_CANTFREE, FAIL, "unable to destroy block tracker info")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5BT_cache_flush() */
/*-------------------------------------------------------------------------
* Function: H5BT_cache_dest
*
* Purpose: Destroys a block tracker in memory.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Mar 10 2005
*
*-------------------------------------------------------------------------
*/
/* ARGSUSED */
herr_t
H5BT_cache_dest(H5F_t UNUSED *f, H5BT_t *bt)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5BT_cache_dest)
/*
* Check arguments.
*/
HDassert(bt);
/* Free block tracker info */
H5FL_FREE(H5BT_t,bt);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5BT_cache_dest() */
/*-------------------------------------------------------------------------
* Function: H5BT_cache_clear
*
* Purpose: Mark a block tracker info in memory as non-dirty.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Mar 10 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5BT_cache_clear(H5F_t *f, H5BT_t *bt, hbool_t destroy)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI_NOINIT(H5BT_cache_clear)
/*
* Check arguments.
*/
HDassert(bt);
/* Reset the dirty flag. */
bt->cache_info.is_dirty = FALSE;
if (destroy)
if (H5BT_cache_dest(f, bt) < 0)
HGOTO_ERROR(H5E_BLKTRK, H5E_CANTFREE, FAIL, "unable to destroy block tracker info")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5BT_cache_clear() */
/*-------------------------------------------------------------------------
* Function: H5BT_cache_size
*
* Purpose: Compute the size in bytes of a block tracker info
* on disk, and return it in *size_ptr. On failure,
* the value of *size_ptr is undefined.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Mar 10 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5BT_cache_size(const H5F_t *f, const H5BT_t UNUSED *bt, size_t *size_ptr)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5BT_cache_size)
/* check arguments */
HDassert(f);
HDassert(size_ptr);
/* Set size value */
*size_ptr = H5BT_SIZE(f);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5BT_cache_size() */
|
