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
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1999
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char sccsid[] = "@(#)qam_stat.c 11.4 (Sleepycat) 8/19/99";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <string.h>
#endif
#include "db_int.h"
#include "db_page.h"
#include "db_shash.h"
#include "db_am.h"
#include "lock.h"
#include "qam.h"
/*
* CDB___qam_stat --
* Gather/print the qam statistics
*
* PUBLIC: int CDB___qam_stat __P((DB *, void *, void *(*)(size_t), u_int32_t));
*/
int
CDB___qam_stat(dbp, spp, db_malloc, flags)
DB *dbp;
void *spp;
void *(*db_malloc) __P((size_t));
u_int32_t flags;
{
QUEUE *t;
DBC *dbc;
DB_LOCK lock;
DB_QUEUE_STAT *sp;
PAGE *h;
QAMDATA *qp, *ep;
QMETA *meta;
db_indx_t indx;
db_pgno_t lastpgno, pgno;
int ret, t_ret;
PANIC_CHECK(dbp->dbenv);
DB_ILLEGAL_BEFORE_OPEN(dbp, "DB->stat");
t = dbp->q_internal;
sp = NULL;
lock.off = LOCK_INVALID;
/* Check for invalid flags. */
if ((ret = CDB___db_statchk(dbp, flags)) != 0)
return (ret);
if (spp == NULL)
return (0);
/* Acquire a cursor. */
if ((ret = dbp->cursor(dbp, NULL, &dbc, 0)) != 0)
return (ret);
DEBUG_LWRITE(dbc, NULL, "qam_stat", NULL, NULL, flags);
/* Allocate and clear the structure. */
if ((ret = CDB___os_malloc(sizeof(*sp), db_malloc, &sp)) != 0)
goto err;
memset(sp, 0, sizeof(*sp));
/* Get the meta-data page. */
if ((ret = CDB___db_lget(dbc, 0, t->q_meta, DB_LOCK_READ, 0, &lock)) != 0)
goto err;
if ((ret = CDB_memp_fget(dbp->mpf, &t->q_meta, 0, (PAGE **)&meta)) != 0)
goto err;
/* Get the metadata fields. */
sp->qs_magic = meta->dbmeta.magic;
sp->qs_version = meta->dbmeta.version;
sp->qs_metaflags = meta->dbmeta.flags;
sp->qs_pagesize = meta->dbmeta.pagesize;
sp->qs_re_len = meta->re_len;
sp->qs_re_pad = meta->re_pad;
sp->qs_start = meta->start;
sp->qs_first_recno = meta->first_recno;
sp->qs_cur_recno = meta->cur_recno;
/* Discard the meta-data page. */
if ((ret = CDB_memp_fput(dbp->mpf, meta, 0)) != 0)
goto err;
(void)__LPUT(dbc, lock);
/* Determine the last page of the database. */
if ((ret = CDB_memp_fget(dbp->mpf, &lastpgno, DB_MPOOL_LAST, &h)) != 0)
goto err;
if ((ret = CDB_memp_fput(dbp->mpf, h, 0)) != 0)
goto err;
/* Walk through the pages and count. */
for (pgno = t->q_root; pgno <= lastpgno; ++pgno) {
if ((ret =
CDB___db_lget(dbc, 0, pgno, DB_LOCK_READ, 0, &lock)) != 0)
goto err;
if ((ret = CDB_memp_fget(dbp->mpf, &pgno, 0, &h)) != 0)
goto err;
++sp->qs_pages;
ep = (QAMDATA *)((u_long) h + dbp->pgsize - sp->qs_re_len);
for (indx = 0, qp = QAM_GET_RECORD(dbp, h, indx);
qp <= ep;
++indx, qp = QAM_GET_RECORD(dbp, h, indx)) {
if (F_ISSET(qp, QAM_VALID))
sp->qs_nrecs++;
else
sp->qs_pgfree += sp->qs_re_len;
}
if ((ret = CDB_memp_fput(dbp->mpf, h, 0)) != 0)
goto err;
(void)__LPUT(dbc, lock);
}
*(DB_QUEUE_STAT **)spp = sp;
ret = 0;
if (0) {
err: if (sp != NULL)
CDB___os_free(sp, sizeof(*sp));
}
if (lock.off != LOCK_INVALID)
(void)__LPUT(dbc, lock);
if ((t_ret = dbc->c_close(dbc)) != 0 && ret == 0)
ret = t_ret;
return (ret);
}
|
