summaryrefslogtreecommitdiffstats
path: root/src/H5FAdblkpage.c
blob: d0bf42829143990bde21f4fcc5fa177ab0af00ce (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * 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 COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:     H5FAdblkpage.c
 *
 * Purpose:     Data block page 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 "H5FLprivate.h" /* Free Lists                               */

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

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

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

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

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

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

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

/* Declare a free list to manage the H5FA_dblk_page_t struct */
H5FL_DEFINE_STATIC(H5FA_dblk_page_t);

/* Declare a free list to manage the page elements */
H5FL_BLK_DEFINE(page_elmts);

/*-------------------------------------------------------------------------
 * Function:    H5FA__dblk_page_alloc
 *
 * Purpose:     Allocate fixed array data block page
 *
 * Return:      Non-NULL pointer to data block on success/NULL on failure
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
H5FA_dblk_page_t *
H5FA__dblk_page_alloc(H5FA_hdr_t *hdr, size_t nelmts)
{
    H5FA_dblk_page_t *dblk_page = NULL; /* Fixed array data block page */
    H5FA_dblk_page_t *ret_value = NULL;

    FUNC_ENTER_PACKAGE

    /* Check arguments */
    HDassert(hdr);

    /* Allocate memory for the data block */
    if (NULL == (dblk_page = H5FL_CALLOC(H5FA_dblk_page_t)))
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTALLOC, NULL,
                    "memory allocation failed for fixed array data block page")

    /* Share common array information */
    if (H5FA__hdr_incr(hdr) < 0)
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTINC, NULL, "can't increment reference count on shared array header")
    dblk_page->hdr = hdr;

    /* Set non-zero internal fields */
    dblk_page->nelmts = nelmts;

    /* Allocate buffer for elements in data block page */
    if (NULL == (dblk_page->elmts = H5FL_BLK_MALLOC(page_elmts, nelmts * hdr->cparam.cls->nat_elmt_size)))
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTALLOC, NULL,
                    "memory allocation failed for data block page element buffer")

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

done:

    if (!ret_value)
        if (dblk_page && H5FA__dblk_page_dest(dblk_page) < 0)
            HDONE_ERROR(H5E_FARRAY, H5E_CANTFREE, NULL, "unable to destroy fixed array data block page")

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FA__dblk_page_alloc() */

/*-------------------------------------------------------------------------
 * Function:    H5FA__dblk_page_create
 *
 * Purpose:     Creates a new fixed array data block page in the file
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5FA__dblk_page_create(H5FA_hdr_t *hdr, haddr_t addr, size_t nelmts)
{
    H5FA_dblk_page_t *dblk_page = NULL;  /* Fixed array data block page */
    hbool_t           inserted  = FALSE; /* Whether the header was inserted into cache */
    herr_t            ret_value = SUCCEED;

    FUNC_ENTER_PACKAGE

#ifdef H5FA_DEBUG
    HDfprintf(stderr, "%s: Called, addr = %" PRIuHADDR "\n", FUNC, addr);
#endif /* H5FA_DEBUG */

    /* Sanity check */
    HDassert(hdr);

    /* Allocate the data block page */
    if (NULL == (dblk_page = H5FA__dblk_page_alloc(hdr, nelmts)))
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTALLOC, FAIL,
                    "memory allocation failed for fixed array data block page")

    /* Set info about data block page on disk */
    dblk_page->addr = addr;
    dblk_page->size = H5FA_DBLK_PAGE_SIZE(hdr, nelmts);
#ifdef H5FA_DEBUG
    HDfprintf(stderr, "%s: dblk_page->size = %Zu\n", FUNC, dblk_page->size);
#endif /* H5FA_DEBUG */

    /* Clear any elements in data block page to fill value */
    if ((hdr->cparam.cls->fill)(dblk_page->elmts, nelmts) < 0)
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTSET, FAIL,
                    "can't set fixed array data block page elements to class's fill value")

    /* Cache the new fixed array data block page */
    if (H5AC_insert_entry(hdr->f, H5AC_FARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, H5AC__NO_FLAGS_SET) < 0)
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTINSERT, FAIL, "can't add fixed array data block page to cache")
    inserted = TRUE;

    /* Add data block page as child of 'top' proxy */
    if (hdr->top_proxy) {
        if (H5AC_proxy_entry_add_child(hdr->top_proxy, hdr->f, dblk_page) < 0)
            HGOTO_ERROR(H5E_FARRAY, H5E_CANTSET, FAIL,
                        "unable to add fixed array entry as child of array proxy")
        dblk_page->top_proxy = hdr->top_proxy;
    } /* end if */

done:
    if (ret_value < 0)
        if (dblk_page) {
            /* Remove from cache, if inserted */
            if (inserted)
                if (H5AC_remove_entry(dblk_page) < 0)
                    HDONE_ERROR(H5E_FARRAY, H5E_CANTREMOVE, FAIL,
                                "unable to remove fixed array data block page from cache")

            /* Destroy data block page */
            if (H5FA__dblk_page_dest(dblk_page) < 0)
                HDONE_ERROR(H5E_FARRAY, H5E_CANTFREE, FAIL, "unable to destroy fixed array data block page")
        } /* end if */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FA__dblk_page_create() */

/*-------------------------------------------------------------------------
 * Function:    H5FA__dblk_page_protect
 *
 * Purpose:     Convenience wrapper around protecting fixed array data
 *              block page
 *
 * Return:      Non-NULL pointer to data block page on success/NULL on failure
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
H5FA_dblk_page_t *
H5FA__dblk_page_protect(H5FA_hdr_t *hdr, haddr_t dblk_page_addr, size_t dblk_page_nelmts, unsigned flags)
{
    H5FA_dblk_page_t         *dblk_page = NULL; /* Fixed array data block page */
    H5FA_dblk_page_cache_ud_t udata;            /* Information needed for loading data block page */
    H5FA_dblk_page_t         *ret_value = NULL;

    FUNC_ENTER_PACKAGE

#ifdef H5FA_DEBUG
    HDfprintf(stderr, "%s: Called\n", FUNC);
#endif /* H5FA_DEBUG */

    /* Sanity check */
    HDassert(hdr);
    HDassert(H5F_addr_defined(dblk_page_addr));

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

    /* Set up user data */
    udata.hdr            = hdr;
    udata.nelmts         = dblk_page_nelmts;
    udata.dblk_page_addr = dblk_page_addr;

    /* Protect the data block page */
    if (NULL == (dblk_page = (H5FA_dblk_page_t *)H5AC_protect(hdr->f, H5AC_FARRAY_DBLK_PAGE, dblk_page_addr,
                                                              &udata, flags)))
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTPROTECT, NULL,
                    "unable to protect fixed array data block page, address = %llu",
                    (unsigned long long)dblk_page_addr)

    /* Create top proxy, if it doesn't exist */
    if (hdr->top_proxy && NULL == dblk_page->top_proxy) {
        /* Add data block page as child of 'top' proxy */
        if (H5AC_proxy_entry_add_child(hdr->top_proxy, hdr->f, dblk_page) < 0)
            HGOTO_ERROR(H5E_FARRAY, H5E_CANTSET, NULL,
                        "unable to add fixed array entry as child of array proxy")
        dblk_page->top_proxy = hdr->top_proxy;
    } /* end if */

    /* Set return value */
    ret_value = dblk_page;

done:

    /* Clean up on error */
    if (!ret_value) {
        /* Release the data block page, if it was protected */
        if (dblk_page &&
            H5AC_unprotect(hdr->f, H5AC_FARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, H5AC__NO_FLAGS_SET) < 0)
            HDONE_ERROR(H5E_FARRAY, H5E_CANTUNPROTECT, NULL,
                        "unable to unprotect fixed array data block page, address = %llu",
                        (unsigned long long)dblk_page->addr)
    } /* end if */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FA__dblk_page_protect() */

/*-------------------------------------------------------------------------
 * Function:    H5FA__dblk_page_unprotect
 *
 * Purpose:     Convenience wrapper around unprotecting fixed array
 *              data block page
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5FA__dblk_page_unprotect(H5FA_dblk_page_t *dblk_page, unsigned cache_flags)
{
    herr_t ret_value = SUCCEED;

    FUNC_ENTER_PACKAGE

#ifdef H5FA_DEBUG
    HDfprintf(stderr, "%s: Called\n", FUNC);
#endif /* H5FA_DEBUG */

    /* Sanity check */
    HDassert(dblk_page);

    /* Unprotect the data block page */
    if (H5AC_unprotect(dblk_page->hdr->f, H5AC_FARRAY_DBLK_PAGE, dblk_page->addr, dblk_page, cache_flags) < 0)
        HGOTO_ERROR(H5E_FARRAY, H5E_CANTUNPROTECT, FAIL,
                    "unable to unprotect fixed array data block page, address = %llu",
                    (unsigned long long)dblk_page->addr)

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FA__dblk_page_unprotect() */

/*-------------------------------------------------------------------------
 * Function:    H5FA__dblk_page_dest
 *
 * Purpose:     Destroys a fixed array data block page in memory.
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Vailin Choi
 *              Thursday, April 30, 2009
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5FA__dblk_page_dest(H5FA_dblk_page_t *dblk_page)
{
    herr_t ret_value = SUCCEED;

    FUNC_ENTER_PACKAGE

    /* Sanity check */
    HDassert(dblk_page);

    /* Check if header field has been initialized */
    if (dblk_page->hdr) {
        /* Check if buffer for data block page elements has been initialized */
        if (dblk_page->elmts) {
            /* Free buffer for data block page elements */
            dblk_page->elmts = H5FL_BLK_FREE(page_elmts, dblk_page->elmts);
        } /* end if */

        /* Decrement reference count on shared info */
        if (H5FA__hdr_decr(dblk_page->hdr) < 0)
            HGOTO_ERROR(H5E_FARRAY, H5E_CANTDEC, FAIL,
                        "can't decrement reference count on shared array header")
        dblk_page->hdr = NULL;
    } /* end if */

    /* Sanity check */
    HDassert(NULL == dblk_page->top_proxy);

    /* Free the data block page itself */
    dblk_page = H5FL_FREE(H5FA_dblk_page_t, dblk_page);

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FA__dblk_page_dest() */