74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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*/
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typedef nxt_uint_t nxt_rbtree1_key_t;
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typedef nxt_int_t nxt_rbtree1_key_int_t;
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typedef struct nxt_rbtree1_node_s nxt_rbtree1_node_t;
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struct nxt_rbtree1_node_s {
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nxt_rbtree1_key_t key;
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nxt_rbtree1_node_t *left;
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nxt_rbtree1_node_t *right;
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nxt_rbtree1_node_t *parent;
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u_char color;
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u_char data;
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};
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typedef struct nxt_rbtree1_s nxt_rbtree1_t;
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typedef void (*nxt_rbtree1_insert_pt) (nxt_rbtree1_node_t *root,
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nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel);
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struct nxt_rbtree1_s {
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nxt_rbtree1_node_t *root;
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nxt_rbtree1_node_t *sentinel;
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nxt_rbtree1_insert_pt insert;
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};
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#define nxt_rbtree1_init(tree, s, i) \
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nxt_rbtree1_sentinel_init(s); \
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(tree)->root = s; \
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(tree)->sentinel = s; \
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(tree)->insert = i
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NXT_EXPORT void nxt_rbtree1_insert(nxt_rbtree1_t *tree,
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nxt_rbtree1_node_t *node);
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NXT_EXPORT void nxt_rbtree1_delete(nxt_rbtree1_t *tree,
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nxt_rbtree1_node_t *node);
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NXT_EXPORT void nxt_rbtree1_insert_value(nxt_rbtree1_node_t *root,
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nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel);
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NXT_EXPORT void nxt_rbtree1_insert_timer_value(nxt_rbtree1_node_t *root,
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nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel);
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#define nxt_rbtree1_red(node) ((node)->color = 1)
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#define nxt_rbtree1_black(node) ((node)->color = 0)
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#define nxt_rbtree1_is_red(node) ((node)->color)
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#define nxt_rbtree1_is_black(node) (!nxt_rbtree1_is_red(node))
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#define nxt_rbtree1_copy_color(n1, n2) (n1->color = n2->color)
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/* a sentinel must be black */
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#define nxt_rbtree1_sentinel_init(node) nxt_rbtree1_black(node)
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nxt_inline nxt_rbtree1_node_t *
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nxt_rbtree1_min(nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel)
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{
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while (node->left != sentinel) {
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node = node->left;
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}
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return node;
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}
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