Import BSDDB 4.7.25 (as of svn r89086)

2017-09-04 13:40:25 -05:00
parent 4b29e0458f
commit 8f590873d0
4781 changed files with 2241032 additions and 6 deletions
--- a/hash/hash_method.c
+++ b/hash/hash_method.c
@@ -0,0 +1,183 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1999,2008 Oracle.  All rights reserved.
+ *
+ * $Id: hash_method.c 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#include "db_config.h"
+
+#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->env,
+	    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;
+	hashp->h_compare = NULL;
+
+	dbp->get_h_ffactor = __ham_get_h_ffactor;
+	dbp->set_h_ffactor = __ham_set_h_ffactor;
+	dbp->set_h_hash = __ham_set_h_hash;
+	dbp->set_h_compare = __ham_set_h_compare;
+	dbp->get_h_nelem = __ham_get_h_nelem;
+	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->env, dbp->h_internal);
+	dbp->h_internal = NULL;
+	return (0);
+}
+
+/*
+ * __ham_get_h_ffactor --
+ *
+ * PUBLIC: int __ham_get_h_ffactor __P((DB *, u_int32_t *));
+ */
+int
+__ham_get_h_ffactor(dbp, h_ffactorp)
+	DB *dbp;
+	u_int32_t *h_ffactorp;
+{
+	HASH *hashp;
+
+	hashp = dbp->h_internal;
+	*h_ffactorp = hashp->h_ffactor;
+	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, "DB->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, "DB->set_h_hash");
+	DB_ILLEGAL_METHOD(dbp, DB_OK_HASH);
+
+	hashp = dbp->h_internal;
+	hashp->h_hash = func;
+	return (0);
+}
+
+/*
+ * __ham_set_h_compare --
+ *	Set the comparison function.
+ *
+ * PUBLIC: int __ham_set_h_compare
+ * PUBLIC:         __P((DB *, int (*)(DB *, const DBT *, const DBT *)));
+ */
+int
+__ham_set_h_compare(dbp, func)
+	DB *dbp;
+	int (*func) __P((DB *, const DBT *, const DBT *));
+{
+	HASH *t;
+
+	DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_h_compare");
+	DB_ILLEGAL_METHOD(dbp, DB_OK_HASH);
+
+	t = dbp->h_internal;
+
+	t->h_compare = func;
+
+	return (0);
+}
+
+/*
+ * __db_get_h_nelem --
+ *
+ * PUBLIC: int __ham_get_h_nelem __P((DB *, u_int32_t *));
+ */
+int
+__ham_get_h_nelem(dbp, h_nelemp)
+	DB *dbp;
+	u_int32_t *h_nelemp;
+{
+	HASH *hashp;
+
+	DB_ILLEGAL_METHOD(dbp, DB_OK_HASH);
+
+	hashp = dbp->h_internal;
+	*h_nelemp = hashp->h_nelem;
+	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, "DB->set_h_nelem");
+	DB_ILLEGAL_METHOD(dbp, DB_OK_HASH);
+
+	hashp = dbp->h_internal;
+	hashp->h_nelem = h_nelem;
+	return (0);
+}