mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 13:32:33 +01:00
126 lines
2.2 KiB
C
126 lines
2.2 KiB
C
/*-
|
|
* See the file LICENSE for redistribution information.
|
|
*
|
|
* Copyright (c) 1999-2002
|
|
* Sleepycat Software. All rights reserved.
|
|
*/
|
|
|
|
#include "db_config.h"
|
|
|
|
#ifndef lint
|
|
static const char revid[] = "$Id: hash_method.c,v 11.12 2002/03/27 04:32:12 bostic Exp $";
|
|
#endif /* not lint */
|
|
|
|
#ifndef NO_SYSTEM_INCLUDES
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#include "db_int.h"
|
|
#include "dbinc/db_page.h"
|
|
#include "dbinc/hash.h"
|
|
|
|
static int __ham_set_h_ffactor __P((DB *, u_int32_t));
|
|
static int __ham_set_h_hash
|
|
__P((DB *, u_int32_t(*)(DB *, const void *, u_int32_t)));
|
|
static int __ham_set_h_nelem __P((DB *, u_int32_t));
|
|
|
|
/*
|
|
* __ham_db_create --
|
|
* Hash specific initialization of the DB structure.
|
|
*
|
|
* PUBLIC: int __ham_db_create __P((DB *));
|
|
*/
|
|
int
|
|
__ham_db_create(dbp)
|
|
DB *dbp;
|
|
{
|
|
HASH *hashp;
|
|
int ret;
|
|
|
|
if ((ret = __os_malloc(dbp->dbenv,
|
|
sizeof(HASH), &dbp->h_internal)) != 0)
|
|
return (ret);
|
|
|
|
hashp = dbp->h_internal;
|
|
|
|
hashp->h_nelem = 0; /* Defaults. */
|
|
hashp->h_ffactor = 0;
|
|
hashp->h_hash = NULL;
|
|
|
|
dbp->set_h_ffactor = __ham_set_h_ffactor;
|
|
dbp->set_h_hash = __ham_set_h_hash;
|
|
dbp->set_h_nelem = __ham_set_h_nelem;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* PUBLIC: int __ham_db_close __P((DB *));
|
|
*/
|
|
int
|
|
__ham_db_close(dbp)
|
|
DB *dbp;
|
|
{
|
|
if (dbp->h_internal == NULL)
|
|
return (0);
|
|
__os_free(dbp->dbenv, dbp->h_internal);
|
|
dbp->h_internal = NULL;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __ham_set_h_ffactor --
|
|
* Set the fill factor.
|
|
*/
|
|
static int
|
|
__ham_set_h_ffactor(dbp, h_ffactor)
|
|
DB *dbp;
|
|
u_int32_t h_ffactor;
|
|
{
|
|
HASH *hashp;
|
|
|
|
DB_ILLEGAL_AFTER_OPEN(dbp, "set_h_ffactor");
|
|
DB_ILLEGAL_METHOD(dbp, DB_OK_HASH);
|
|
|
|
hashp = dbp->h_internal;
|
|
hashp->h_ffactor = h_ffactor;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __ham_set_h_hash --
|
|
* Set the hash function.
|
|
*/
|
|
static int
|
|
__ham_set_h_hash(dbp, func)
|
|
DB *dbp;
|
|
u_int32_t (*func) __P((DB *, const void *, u_int32_t));
|
|
{
|
|
HASH *hashp;
|
|
|
|
DB_ILLEGAL_AFTER_OPEN(dbp, "set_h_hash");
|
|
DB_ILLEGAL_METHOD(dbp, DB_OK_HASH);
|
|
|
|
hashp = dbp->h_internal;
|
|
hashp->h_hash = func;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __ham_set_h_nelem --
|
|
* Set the table size.
|
|
*/
|
|
static int
|
|
__ham_set_h_nelem(dbp, h_nelem)
|
|
DB *dbp;
|
|
u_int32_t h_nelem;
|
|
{
|
|
HASH *hashp;
|
|
|
|
DB_ILLEGAL_AFTER_OPEN(dbp, "set_h_nelem");
|
|
DB_ILLEGAL_METHOD(dbp, DB_OK_HASH);
|
|
|
|
hashp = dbp->h_internal;
|
|
hashp->h_nelem = h_nelem;
|
|
return (0);
|
|
}
|