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
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1998-2004
* Sleepycat Software. All rights reserved.
*
* $Id: xa_db.c,v 11.26 2004/01/28 03:36:40 bostic Exp $
*/
#include "db_config.h"
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#endif
#include "db_int.h"
#include "dbinc/txn.h"
static int __xa_close __P((DB *, u_int32_t));
static int __xa_cursor __P((DB *, DB_TXN *, DBC **, u_int32_t));
static int __xa_del __P((DB *, DB_TXN *, DBT *, u_int32_t));
static int __xa_get __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
static int __xa_open __P((DB *, DB_TXN *,
const char *, const char *, DBTYPE, u_int32_t, int));
static int __xa_put __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
typedef struct __xa_methods {
int (*close) __P((DB *, u_int32_t));
int (*cursor) __P((DB *, DB_TXN *, DBC **, u_int32_t));
int (*del) __P((DB *, DB_TXN *, DBT *, u_int32_t));
int (*get) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
int (*open) __P((DB *, DB_TXN *,
const char *, const char *, DBTYPE, u_int32_t, int));
int (*put) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
} XA_METHODS;
#define SET_TXN(PARAM, LOCAL) { \
(LOCAL) = NULL; \
if (!LF_ISSET(DB_AUTO_COMMIT)) { \
if ((PARAM) != NULL) \
(LOCAL) = (PARAM); \
else if (__xa_get_txn(dbp->dbenv, &(LOCAL), 0) != 0) \
(LOCAL) = NULL; \
else if ((LOCAL) != NULL && (LOCAL)->txnid == TXN_INVALID) \
(LOCAL) = NULL; \
} \
}
/*
* __db_xa_create --
* DB XA constructor.
*
* PUBLIC: int __db_xa_create __P((DB *));
*/
int
__db_xa_create(dbp)
DB *dbp;
{
XA_METHODS *xam;
int ret;
/*
* Interpose XA routines in front of any method that takes a TXN
* ID as an argument.
*/
if ((ret = __os_calloc(dbp->dbenv, 1, sizeof(XA_METHODS), &xam)) != 0)
return (ret);
dbp->xa_internal = xam;
xam->open = dbp->open;
dbp->open = __xa_open;
xam->close = dbp->close;
dbp->close = __xa_close;
return (0);
}
/*
* __xa_open --
* XA open wrapper.
*/
static int
__xa_open(dbp, txn, name, subdb, type, flags, mode)
DB *dbp;
DB_TXN *txn;
const char *name, *subdb;
DBTYPE type;
u_int32_t flags;
int mode;
{
DB_TXN *t;
XA_METHODS *xam;
int ret;
xam = (XA_METHODS *)dbp->xa_internal;
SET_TXN(txn, t);
if ((ret = xam->open(dbp, t, name, subdb, type, flags, mode)) != 0)
return (ret);
xam->cursor = dbp->cursor;
xam->del = dbp->del;
xam->get = dbp->get;
xam->put = dbp->put;
dbp->cursor = __xa_cursor;
dbp->del = __xa_del;
dbp->get = __xa_get;
dbp->put = __xa_put;
return (0);
}
static int
__xa_cursor(dbp, txn, dbcp, flags)
DB *dbp;
DB_TXN *txn;
DBC **dbcp;
u_int32_t flags;
{
DB_TXN *t;
if (txn != NULL)
t = txn;
else if (__xa_get_txn(dbp->dbenv, &t, 0) != 0 ||
t->txnid== TXN_INVALID)
t = NULL;
return (((XA_METHODS *)dbp->xa_internal)->cursor (dbp, t, dbcp, flags));
}
static int
__xa_del(dbp, txn, key, flags)
DB *dbp;
DB_TXN *txn;
DBT *key;
u_int32_t flags;
{
DB_TXN *t;
SET_TXN(txn, t);
return (((XA_METHODS *)dbp->xa_internal)->del(dbp, t, key, flags));
}
static int
__xa_close(dbp, flags)
DB *dbp;
u_int32_t flags;
{
int (*real_close) __P((DB *, u_int32_t));
real_close = ((XA_METHODS *)dbp->xa_internal)->close;
__os_free(dbp->dbenv, dbp->xa_internal);
dbp->xa_internal = NULL;
return (real_close(dbp, flags));
}
static int
__xa_get(dbp, txn, key, data, flags)
DB *dbp;
DB_TXN *txn;
DBT *key, *data;
u_int32_t flags;
{
DB_TXN *t;
SET_TXN(txn, t);
return (((XA_METHODS *)dbp->xa_internal)->get
(dbp, t, key, data, flags));
}
static int
__xa_put(dbp, txn, key, data, flags)
DB *dbp;
DB_TXN *txn;
DBT *key, *data;
u_int32_t flags;
{
DB_TXN *t;
SET_TXN(txn, t);
return (((XA_METHODS *)dbp->xa_internal)->put
(dbp, t, key, data, flags));
}
|
