/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2015 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Felipe Pena <felipe@php.net> |
| Authors: Joe Watkins <joe.watkins@live.co.uk> |
| Authors: Bob Weinand <bwoebi@php.net> |
+----------------------------------------------------------------------+
*/
#ifndef PHPDBG_BTREE_H
#define PHPDBG_BTREE_H
#include "zend.h"
typedef struct {
zend_ulong idx;
void *ptr;
} phpdbg_btree_result;
typedef union _phpdbg_btree_branch phpdbg_btree_branch;
union _phpdbg_btree_branch {
phpdbg_btree_branch *branches[2];
phpdbg_btree_result result;
};
typedef struct {
zend_ulong count;
zend_ulong depth;
phpdbg_btree_branch *branch;
} phpdbg_btree;
typedef struct {
phpdbg_btree *tree;
zend_ulong cur;
zend_ulong end;
} phpdbg_btree_position;
void phpdbg_btree_init(phpdbg_btree *tree, zend_ulong depth);
phpdbg_btree_result *phpdbg_btree_find(phpdbg_btree *tree, zend_ulong idx);
phpdbg_btree_result *phpdbg_btree_find_closest(phpdbg_btree *tree, zend_ulong idx);
phpdbg_btree_position phpdbg_btree_find_between(phpdbg_btree *tree, zend_ulong lower_idx, zend_ulong higher_idx);
phpdbg_btree_result *phpdbg_btree_next(phpdbg_btree_position *pos);
int phpdbg_btree_delete(phpdbg_btree *tree, zend_ulong idx);
#define PHPDBG_BTREE_INSERT 1
#define PHPDBG_BTREE_UPDATE 2
#define PHPDBG_BTREE_OVERWRITE (PHPDBG_BTREE_INSERT | PHPDBG_BTREE_UPDATE)
int phpdbg_btree_insert_or_update(phpdbg_btree *tree, zend_ulong idx, void *ptr, int flags);
#define phpdbg_btree_insert(tree, idx, ptr) phpdbg_btree_insert_or_update(tree, idx, ptr, PHPDBG_BTREE_INSERT)
#define phpdbg_btree_update(tree, idx, ptr) phpdbg_btree_insert_or_update(tree, idx, ptr, PHPDBG_BTREE_UPDATE)
#define phpdbg_btree_overwrite(tree, idx, ptr) phpdbg_btree_insert_or_update(tree, idx, ptr, PHPDBG_BTREE_OWERWRITE)
/* debugging functions */
void phpdbg_btree_branch_dump(phpdbg_btree_branch *branch, zend_ulong depth);
void phpdbg_btree_dump(phpdbg_btree *tree);
#endif
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