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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2001
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "Id: rep_region.c,v 1.14 2001/10/25 14:08:49 bostic Exp ";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#endif
#include <string.h>
#include "db_int.h"
#include "rep.h"
#include "log.h"
/*
* __rep_region_init --
* Initialize the shared memory state for the replication system.
*
* PUBLIC: int __rep_region_init __P((DB_ENV *));
*/
int
__rep_region_init(dbenv)
DB_ENV *dbenv;
{
REGENV *renv;
REGINFO *infop;
DB_REP *db_rep;
REP *rep;
int ret;
db_rep = dbenv->rep_handle;
infop = dbenv->reginfo;
renv = infop->primary;
ret = 0;
MUTEX_LOCK(dbenv, &renv->mutex, dbenv->lockfhp);
if (renv->rep_off == INVALID_ROFF) {
/* Must create the region. */
if ((ret = __db_shalloc(infop->addr,
sizeof(REP), MUTEX_ALIGN, &rep)) != 0)
goto err;
memset(rep, 0, sizeof(*rep));
rep->tally_off = INVALID_ROFF;
renv->rep_off = R_OFFSET(infop, rep);
if ((ret = __db_mutex_init(dbenv,
&rep->mutex, renv->rep_off, 0)) != 0)
goto err;
/* We have the region; fill in the values. */
rep->eid = DB_EID_INVALID;
rep->master_id = DB_EID_INVALID;
rep->gen = 0;
} else
rep = R_ADDR(infop, renv->rep_off);
MUTEX_UNLOCK(dbenv, &renv->mutex);
db_rep->mutexp = &rep->mutex;
db_rep->region = rep;
return (0);
err: MUTEX_UNLOCK(dbenv, &renv->mutex);
return (ret);
}
/*
* __rep_region_destroy --
* Destroy any system resources allocated in the replication region.
*
* PUBLIC: int __rep_region_destroy __P((DB_ENV *));
*/
int
__rep_region_destroy(dbenv)
DB_ENV *dbenv;
{
DB_REP *db_rep;
int ret;
ret = 0;
db_rep = (DB_REP *)dbenv->rep_handle;
if (db_rep != NULL && db_rep->mutexp != NULL)
ret = __db_mutex_destroy(db_rep->mutexp);
return (ret);
}
/*
* __rep_dbenv_close --
* Replication-specific destruction of the DB_ENV structure.
*
* PUBLIC: int __rep_dbenv_close __P((DB_ENV *));
*/
int
__rep_dbenv_close(dbenv)
DB_ENV *dbenv;
{
DB_REP *db_rep;
db_rep = (DB_REP *)dbenv->rep_handle;
if (db_rep != NULL) {
__os_free(dbenv, db_rep, sizeof(DB_REP));
dbenv->rep_handle = NULL;
}
return (0);
}
/*
* __rep_preclose --
* If we are a client, shut down our client database. Remember that the
* client database was opened in its own environment, not the environment
* for which it keeps track of information. Also, if we have a client
* database (i.e., rep_handle->rep_db) that means we were a client and
* could have applied file opens that need to be closed now. This could
* also mask errors where dbp's that weren't opened by us are still open,
* but we have no way of distingushing the two.
*
* PUBLIC: int __rep_preclose __P((DB_ENV *));
*/
int
__rep_preclose(dbenv)
DB_ENV *dbenv;
{
DB *dbp;
DB_REP *db_rep;
int ret;
ret = 0;
db_rep = (DB_REP *)dbenv->rep_handle;
if (db_rep != NULL && (dbp = db_rep->rep_db) != NULL) {
__log_close_files(dbenv);
ret = dbp->close(dbp, 0);
db_rep->rep_db = NULL;
}
return (ret);
}
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