154 lines
2.8 KiB
C
154 lines
2.8 KiB
C
/*-
|
|
* See the file LICENSE for redistribution information.
|
|
*
|
|
* Copyright (c) 1996,2008 Oracle. All rights reserved.
|
|
*
|
|
* $Id: xa_map.c 63573 2008-05-23 21:43:21Z trent.nelson $
|
|
*/
|
|
|
|
#include "db_config.h"
|
|
|
|
#include "db_int.h"
|
|
#include "dbinc/txn.h"
|
|
|
|
/*
|
|
* This file contains all the mapping information that we need to support
|
|
* the DB/XA interface.
|
|
*/
|
|
|
|
/*
|
|
* __db_rmid_to_env
|
|
* Return the environment associated with a given XA rmid.
|
|
*
|
|
* PUBLIC: int __db_rmid_to_env __P((int, ENV **));
|
|
*/
|
|
int
|
|
__db_rmid_to_env(rmid, envp)
|
|
int rmid;
|
|
ENV **envp;
|
|
{
|
|
ENV *env;
|
|
|
|
env = TAILQ_FIRST(&DB_GLOBAL(envq));
|
|
if (env != NULL && env->xa_rmid == rmid) {
|
|
*envp = env;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* When we map an rmid, move that environment to be the first one in
|
|
* the list of environments, so we acquire the correct environment
|
|
* in DB->open.
|
|
*/
|
|
for (; env != NULL; env = TAILQ_NEXT(env, links))
|
|
if (env->xa_rmid == rmid) {
|
|
TAILQ_REMOVE(&DB_GLOBAL(envq), env, links);
|
|
TAILQ_INSERT_HEAD(&DB_GLOBAL(envq), env, links);
|
|
*envp = env;
|
|
return (0);
|
|
}
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* __db_xid_to_txn
|
|
* Return the txn that corresponds to this XID.
|
|
*
|
|
* PUBLIC: int __db_xid_to_txn __P((ENV *, XID *, roff_t *));
|
|
*/
|
|
int
|
|
__db_xid_to_txn(env, xid, offp)
|
|
ENV *env;
|
|
XID *xid;
|
|
roff_t *offp;
|
|
{
|
|
struct __txn_detail *td;
|
|
|
|
return (__txn_map_gid(env, (u_int8_t *)xid->data, &td, offp));
|
|
}
|
|
|
|
/*
|
|
* __db_map_rmid
|
|
* Create a mapping between the specified rmid and environment.
|
|
*
|
|
* PUBLIC: int __db_map_rmid __P((int, ENV *));
|
|
*/
|
|
int
|
|
__db_map_rmid(rmid, env)
|
|
int rmid;
|
|
ENV *env;
|
|
{
|
|
env->xa_rmid = rmid;
|
|
TAILQ_INSERT_TAIL(&DB_GLOBAL(envq), env, links);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __db_unmap_rmid
|
|
* Destroy the mapping for the given rmid.
|
|
*
|
|
* PUBLIC: int __db_unmap_rmid __P((int));
|
|
*/
|
|
int
|
|
__db_unmap_rmid(rmid)
|
|
int rmid;
|
|
{
|
|
ENV *e;
|
|
|
|
for (e = TAILQ_FIRST(&DB_GLOBAL(envq));
|
|
e->xa_rmid != rmid;
|
|
e = TAILQ_NEXT(e, links))
|
|
;
|
|
|
|
if (e == NULL)
|
|
return (EINVAL);
|
|
|
|
TAILQ_REMOVE(&DB_GLOBAL(envq), e, links);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __db_map_xid
|
|
* Create a mapping between this XID and the transaction
|
|
* "td" in the shared region.
|
|
*
|
|
* PUBLIC: int __db_map_xid __P((ENV *, XID *, TXN_DETAIL *));
|
|
*/
|
|
int
|
|
__db_map_xid(env, xid, td)
|
|
ENV *env;
|
|
XID *xid;
|
|
TXN_DETAIL *td;
|
|
{
|
|
TXN_SYSTEM_LOCK(env);
|
|
memcpy(td->xid, xid->data, XIDDATASIZE);
|
|
td->bqual = (u_int32_t)xid->bqual_length;
|
|
td->gtrid = (u_int32_t)xid->gtrid_length;
|
|
td->format = (int32_t)xid->formatID;
|
|
TXN_SYSTEM_UNLOCK(env);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __db_unmap_xid
|
|
* Destroy the mapping for the specified XID.
|
|
*
|
|
* PUBLIC: void __db_unmap_xid __P((ENV *, XID *, size_t));
|
|
*/
|
|
|
|
void
|
|
__db_unmap_xid(env, xid, off)
|
|
ENV *env;
|
|
XID *xid;
|
|
size_t off;
|
|
{
|
|
TXN_DETAIL *td;
|
|
|
|
COMPQUIET(xid, NULL);
|
|
|
|
td = R_ADDR(&env->tx_handle->reginfo, off);
|
|
memset(td->xid, 0, sizeof(td->xid));
|
|
}
|