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
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2011, 2012 Oracle and/or its affiliates. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
#include "dbinc/db_page.h"
#include "dbinc/heap.h"
#include "dbinc/mp.h"
/*
* __heap_backup --
* Copy a heap database file coordinated with mpool.
*
* PUBLIC: int __heap_backup __P((DB_ENV *, DB *,
* PUBLIC: DB_THREAD_INFO *, DB_FH *, void *, u_int32_t));
*/
int
__heap_backup(dbenv, dbp, ip, fp, handle, flags)
DB_ENV *dbenv;
DB *dbp;
DB_THREAD_INFO *ip;
DB_FH *fp;
void *handle;
u_int32_t flags;
{
HEAPPG *p;
db_pgno_t chunk_pgno, high_pgno, max_pgno;
int ret;
max_pgno = dbp->mpf->mfp->last_pgno;
chunk_pgno = FIRST_HEAP_RPAGE;
for (;;) {
/*
* Get the chunk page and the chunk's highest used page.
* Immediately return the page, it makes error handling easier.
*/
if ((ret = __memp_fget(dbp->mpf,
&chunk_pgno, ip, NULL, 0, &p)) != 0)
break;
high_pgno = p->high_pgno;
if ((ret = __memp_fput(dbp->mpf,
ip, p, DB_PRIORITY_UNCHANGED)) != 0)
break;
/*
* Backup all the used pages in this chunk, starting at the
* chunk page. If this is the very first chunk, be sure to
* backup the db meta page, too.
*/
if ((ret = __memp_backup_mpf(dbenv->env, dbp->mpf, ip,
chunk_pgno == FIRST_HEAP_RPAGE ? 0 : chunk_pgno,
high_pgno, fp, handle, flags)) != 0)
break;
chunk_pgno += HEAP_REGION_SIZE(dbp) + 1;
if (chunk_pgno > max_pgno)
break;
}
return (ret);
}
|
