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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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: H5HF.c
* Feb 24 2006
* Quincey Koziol <koziol@ncsa.uiuc.edu>
*
* Purpose: Implements a "fractal heap" for storing variable-
* length objects in a file.
*
* Please see the documentation in:
* doc/html/TechNotes/FractalHeap.html for a full description
* of how they work, etc.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#define H5HF_PACKAGE /*suppress error about including H5HFpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5HFpkg.h" /* Fractal heaps */
#include "H5MFprivate.h" /* File memory management */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/* Declare a free list to manage the H5HF_t struct */
H5FL_DEFINE(H5HF_t);
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5HF_create
*
* Purpose: Creates a new empty fractal heap in the file.
*
* Return: Non-negative on success (with address of new fractal heap
* filled in), negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Feb 24 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5HF_create(H5F_t *f, hid_t dxpl_id, H5HF_create_t *cparam, haddr_t *addr_p)
{
H5HF_t *fh = NULL; /* The new fractal heap header information */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5HF_create, FAIL)
/*
* Check arguments.
*/
HDassert(f);
HDassert(cparam);
HDassert(addr_p);
/*
* Allocate file and memory data structures.
*/
if(NULL == (fh = H5FL_MALLOC(H5HF_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for fractal heap header")
/* Reset the metadata cache info for the heap header */
HDmemset(&fh->cache_info, 0, sizeof(H5AC_info_t));
/* Allocate space for the header on disk */
if(HADDR_UNDEF == (*addr_p = H5MF_alloc(f, H5FD_MEM_FHEAP_HDR, dxpl_id, (hsize_t)H5HF_HEADER_SIZE(f))))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for fractal heap header")
/* Initialize shared fractal heap info */
if(H5HF_shared_create(f, fh, *addr_p, cparam) < 0)
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't create shared fractal heap info")
/* Cache the new fractal heap header */
if(H5AC_set(f, dxpl_id, H5AC_FHEAP_HDR, *addr_p, fh, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "can't add fractal heap header to cache")
done:
if(ret_value < 0) {
if(fh)
(void)H5HF_cache_hdr_dest(f, fh);
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_create() */
/*-------------------------------------------------------------------------
* Function: H5HF_insert
*
* Purpose: Insert a new object into a fractal heap.
*
* Return: Non-negative on success (with heap ID of new object
* filled in), negative on failure
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
* Feb 24 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5HF_insert(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t size,
const void *obj, void *id/*out*/)
{
H5HF_t *fh = NULL; /* The new fractal heap header information */
H5HF_shared_t *shared; /* Shared fractal heap information */
unsigned hdr_flags = H5AC__NO_FLAGS_SET; /* Metadata cache flags for header */
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5HF_insert, FAIL)
#ifdef QAK
HDfprintf(stderr, "%s: size = %Zu\n", FUNC, size);
#endif /* QAK */
/*
* Check arguments.
*/
HDassert(f);
HDassert(H5F_addr_defined(addr));
HDassert(size > 0);
HDassert(obj);
HDassert(id);
/*
* Load the fractal heap header.
*/
if(NULL == (fh = H5AC_protect(f, dxpl_id, H5AC_FHEAP_HDR, addr, NULL, NULL, H5AC_WRITE)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap header")
/* Get the pointer to the shared fractal heap info */
shared = H5RC_GET_OBJ(fh->shared);
HDassert(shared);
/* Check if object is large enough to be standalone */
if(size >= shared->standalone_size) {
HGOTO_ERROR(H5E_HEAP, H5E_UNSUPPORTED, FAIL, "standalone blocks not supported yet")
} /* end if */
else {
/* Check if we are in "append only" mode, or if there's enough room for the object */
if(shared->write_once) {
HGOTO_ERROR(H5E_HEAP, H5E_UNSUPPORTED, FAIL, "'write once' managed blocks not supported yet")
} /* end if */
else {
H5HF_section_free_node_t *sec_node;
/* Find free space in heap */
if(H5HF_man_find(fh->shared, dxpl_id, size, &sec_node) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTALLOC, FAIL, "can't allocate space in fractal heap")
/* Use free space for allocating object */
if(H5HF_man_insert(fh->shared, dxpl_id, sec_node, size, obj, id) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTALLOC, FAIL, "can't allocate space for object in fractal heap")
} /* end else */
} /* end else */
/* Check for making header dirty */
if(shared->dirty)
hdr_flags |= H5AC__DIRTIED_FLAG;
done:
if(fh && H5AC_unprotect(f, dxpl_id, H5AC_FHEAP_HDR, addr, fh, hdr_flags) < 0)
HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap header")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_insert() */
|
