/*- * 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); }