wsutil/wmem/wmem_tree-int.h

   1 /** @file
   2  *
   3  * Definitions for the Wireshark Memory Manager Red-Black Tree
   4  * Copyright 2013, Evan Huus <eapache@gmail.com>
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * SPDX-License-Identifier: GPL-2.0-or-later
  11  */
  12
  13 #ifndef __WMEM_TREE_INT_H__
  14 #define __WMEM_TREE_INT_H__
  15
  16 #include "wmem_tree.h"
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif /* __cplusplus */
  21
  22 typedef enum _wmem_node_color_t {
  23     WMEM_NODE_COLOR_RED,
  24     WMEM_NODE_COLOR_BLACK
  25 } wmem_node_color_t;
  26
  27
  28 struct _wmem_tree_node_t {
  29     struct _wmem_tree_node_t *parent;
  30     struct _wmem_tree_node_t *left;
  31     struct _wmem_tree_node_t *right;
  32
  33     const void *key;
  34     void *data;
  35
  36     wmem_node_color_t color;
  37     bool              is_subtree;
  38     bool              is_removed;
  39
  40
  41 };
  42
  43 typedef struct _wmem_tree_node_t wmem_tree_node_t;
  44
  45
  46 typedef struct _wmem_itree_node_t wmem_itree_node_t;
  47
  48 struct _wmem_tree_t {
  49     wmem_allocator_t *metadata_allocator;
  50     wmem_allocator_t *data_allocator;
  51     wmem_tree_node_t *root;
  52     unsigned          metadata_scope_cb_id;
  53     unsigned          data_scope_cb_id;
  54
  55     void (*post_rotation_cb)(wmem_tree_node_t *);
  56 };
  57
  58 typedef int (*compare_func)(const void *a, const void *b);
  59
  60 wmem_tree_node_t *
  61 wmem_tree_insert_node(wmem_tree_t *tree, const void *key, void *data, compare_func cmp);
  62
  63 typedef struct _wmem_range_t wmem_range_t;
  64
  65 bool
  66 wmem_itree_range_overlap(const wmem_range_t *r1, const wmem_range_t *r2);
  67
  68 #ifdef __cplusplus
  69 }
  70 #endif /* __cplusplus */
  71
  72 #endif /* __WMEM_TREE__INTERNALS_H__ */
  73
  74 /*
  75  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
  76  *
  77  * Local variables:
  78  * c-basic-offset: 4
  79  * tab-width: 8
  80  * indent-tabs-mode: nil
  81  * End:
  82  *
  83  * vi: set shiftwidth=4 tabstop=8 expandtab:
  84  * :indentSize=4:tabSize=8:noTabs=true:
  85  */