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
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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>
* Monday, March 6, 2006
*
* Purpose: v2 B-tree metadata statistics functions.
*
*/
/****************/
/* Module Setup */
/****************/
#define H5B2_PACKAGE /*suppress error about including H5B2pkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5B2pkg.h" /* v2 B-trees */
#include "H5Eprivate.h" /* Error handling */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5B2_stat_info
*
* Purpose: Retrieve metadata statistics for a v2 B-tree
*
* Return: Success: non-negative
*
* Failure: negative
*
* Programmer: Quincey Koziol
* Monday, March 6, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5B2_stat_info(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type,
haddr_t addr, H5B2_stat_t *info)
{
H5B2_t *bt2 = NULL; /* Pointer to the B-tree header */
H5B2_shared_t *shared; /* Pointer to B-tree's shared information */
H5B2_hdr_cache_ud_t cache_udata; /* User-data for callback */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5B2_stat_info)
/* Check arguments. */
HDassert(f);
HDassert(type);
HDassert(H5F_addr_defined(addr));
HDassert(info);
cache_udata.f = f;
cache_udata.type = type;
/* Look up the B-tree header */
if(NULL == (bt2 = (H5B2_t *)H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, (size_t)H5B2_HEADER_SIZE(f), &cache_udata, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree header")
/* Get pointer to reference counted shared B-tree info */
shared = (H5B2_shared_t *)H5RC_GET_OBJ(bt2->shared);
/* Get information about the B-tree */
info->depth = shared->depth;
info->nrecords = bt2->root.all_nrec;
done:
/* Release B-tree header node */
if(bt2 && H5AC_unprotect(f, dxpl_id, H5AC_BT2_HDR, addr, (size_t)0, bt2, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree header info")
FUNC_LEAVE_NOAPI(ret_value)
} /* H5B2_stat_info() */
|
