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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifndef _DB_TREE_H
#define _DB_TREE_H
#include "erl_db_util.h"
typedef struct tree_db_term {
struct tree_db_term *left, *right; /* left and right child */
int balance; /* tree balancing value */
DbTerm dbterm; /* The actual term */
} TreeDbTerm;
typedef struct {
Uint pos; /* Current position on stack */
Uint slot; /* "Slot number" of top element or 0 if not set */
TreeDbTerm** array; /* The stack */
} DbTreeStack;
typedef struct db_table_tree {
DbTableCommon common;
/* Tree-specific fields */
TreeDbTerm *root; /* The tree root */
Uint deletion; /* Being deleted */
erts_smp_atomic_t is_stack_busy;
DbTreeStack static_stack;
} DbTableTree;
/*
** Function prototypes, looks the same (except the suffix) for all
** table types. The process is always an [in out] parameter.
*/
void db_initialize_tree(void);
int db_create_tree(Process *p, DbTable *tbl);
#endif /* _DB_TREE_H */
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