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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1998, 1999, 2000
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: xa_db.c,v 11.9 2000/09/06 18:57:59 ubell Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#endif
#include "db_int.h"
#include "xa.h"
#include "xa_ext.h"
#include "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 *,
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 *,
const char *, const char *, DBTYPE, u_int32_t, int));
int (*put) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
} XA_METHODS;
/*
* __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, name, subdb, type, flags, mode)
DB *dbp;
const char *name, *subdb;
DBTYPE type;
u_int32_t flags;
int mode;
{
XA_METHODS *xam;
int ret;
xam = (XA_METHODS *)dbp->xa_internal;
if ((ret = xam->open(dbp, 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;
t = txn != NULL && txn == dbp->open_txn ? txn : dbp->dbenv->xa_txn;
if (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;
t = txn != NULL && txn == dbp->open_txn ? txn : dbp->dbenv->xa_txn;
if (t->txnid == TXN_INVALID)
t = NULL;
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->xa_internal, sizeof(XA_METHODS));
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;
t = txn != NULL && txn == dbp->open_txn ? txn : dbp->dbenv->xa_txn;
if (t->txnid == TXN_INVALID)
t = NULL;
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;
t = txn != NULL && txn == dbp->open_txn ? txn : dbp->dbenv->xa_txn;
if (t->txnid == TXN_INVALID)
t = NULL;
return (((XA_METHODS *)dbp->xa_internal)->put
(dbp, t, key, data, flags));
}
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