1 /* 2 +----------------------------------------------------------------------+ 3 | PHP Version 7 | 4 +----------------------------------------------------------------------+ 5 | Copyright (c) 1997-2017 The PHP Group | 6 +----------------------------------------------------------------------+ 7 | This source file is subject to version 3.01 of the PHP license, | 8 | that is bundled with this package in the file LICENSE, and is | 9 | available through the world-wide-web at the following url: | 10 | http://www.php.net/license/3_01.txt | 11 | If you did not receive a copy of the PHP license and are unable to | 12 | obtain it through the world-wide-web, please send a note to | 13 | license@php.net so we can mail you a copy immediately. | 14 +----------------------------------------------------------------------+ 15 | Authors: Felipe Pena <felipe@php.net> | 16 | Authors: Joe Watkins <joe.watkins@live.co.uk> | 17 | Authors: Bob Weinand <bwoebi@php.net> | 18 +----------------------------------------------------------------------+ 19 */ 20 21 #ifndef PHPDBG_BTREE_H 22 #define PHPDBG_BTREE_H 23 24 #include "zend.h" 25 26 typedef struct { 27 zend_ulong idx; 28 void *ptr; 29 } phpdbg_btree_result; 30 31 typedef union _phpdbg_btree_branch phpdbg_btree_branch; 32 union _phpdbg_btree_branch { 33 phpdbg_btree_branch *branches[2]; 34 phpdbg_btree_result result; 35 }; 36 37 typedef struct { 38 zend_ulong count; 39 zend_ulong depth; 40 phpdbg_btree_branch *branch; 41 } phpdbg_btree; 42 43 typedef struct { 44 phpdbg_btree *tree; 45 zend_ulong cur; 46 zend_ulong end; 47 } phpdbg_btree_position; 48 49 void phpdbg_btree_init(phpdbg_btree *tree, zend_ulong depth); 50 phpdbg_btree_result *phpdbg_btree_find(phpdbg_btree *tree, zend_ulong idx); 51 phpdbg_btree_result *phpdbg_btree_find_closest(phpdbg_btree *tree, zend_ulong idx); 52 phpdbg_btree_position phpdbg_btree_find_between(phpdbg_btree *tree, zend_ulong lower_idx, zend_ulong higher_idx); 53 phpdbg_btree_result *phpdbg_btree_next(phpdbg_btree_position *pos); 54 int phpdbg_btree_delete(phpdbg_btree *tree, zend_ulong idx); 55 56 #define PHPDBG_BTREE_INSERT 1 57 #define PHPDBG_BTREE_UPDATE 2 58 #define PHPDBG_BTREE_OVERWRITE (PHPDBG_BTREE_INSERT | PHPDBG_BTREE_UPDATE) 59 60 int phpdbg_btree_insert_or_update(phpdbg_btree *tree, zend_ulong idx, void *ptr, int flags); 61 #define phpdbg_btree_insert(tree, idx, ptr) phpdbg_btree_insert_or_update(tree, idx, ptr, PHPDBG_BTREE_INSERT) 62 #define phpdbg_btree_update(tree, idx, ptr) phpdbg_btree_insert_or_update(tree, idx, ptr, PHPDBG_BTREE_UPDATE) 63 #define phpdbg_btree_overwrite(tree, idx, ptr) phpdbg_btree_insert_or_update(tree, idx, ptr, PHPDBG_BTREE_OWERWRITE) 64 65 66 /* debugging functions */ 67 void phpdbg_btree_branch_dump(phpdbg_btree_branch *branch, zend_ulong depth); 68 void phpdbg_btree_dump(phpdbg_btree *tree); 69 70 #endif 71
