1 files changed, 73 insertions, 0 deletions
diff --git a/src/test/nxt_rbtree1.h b/src/test/nxt_rbtree1.h
new file mode 100644
index 00000000..60048dad
--- /dev/null
+++ b/src/test/nxt_rbtree1.h
@@ -0,0 +1,73 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+typedef nxt_uint_t  nxt_rbtree1_key_t;
+typedef nxt_int_t   nxt_rbtree1_key_int_t;
+
+
+typedef struct nxt_rbtree1_node_s  nxt_rbtree1_node_t;
+
+struct nxt_rbtree1_node_s {
+    nxt_rbtree1_key_t       key;
+    nxt_rbtree1_node_t     *left;
+    nxt_rbtree1_node_t     *right;
+    nxt_rbtree1_node_t     *parent;
+    u_char                  color;
+    u_char                  data;
+};
+
+
+typedef struct nxt_rbtree1_s  nxt_rbtree1_t;
+
+typedef void (*nxt_rbtree1_insert_pt) (nxt_rbtree1_node_t *root,
+    nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel);
+
+struct nxt_rbtree1_s {
+    nxt_rbtree1_node_t     *root;
+    nxt_rbtree1_node_t     *sentinel;
+    nxt_rbtree1_insert_pt   insert;
+};
+
+
+#define nxt_rbtree1_init(tree, s, i)                                          \
+    nxt_rbtree1_sentinel_init(s);                                             \
+    (tree)->root = s;                                                         \
+    (tree)->sentinel = s;                                                     \
+    (tree)->insert = i
+
+
+NXT_EXPORT void nxt_rbtree1_insert(nxt_rbtree1_t *tree,
+    nxt_rbtree1_node_t *node);
+NXT_EXPORT void nxt_rbtree1_delete(nxt_rbtree1_t *tree,
+    nxt_rbtree1_node_t *node);
+NXT_EXPORT void nxt_rbtree1_insert_value(nxt_rbtree1_node_t *root,
+    nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel);
+NXT_EXPORT void nxt_rbtree1_insert_timer_value(nxt_rbtree1_node_t *root,
+    nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel);
+
+
+#define nxt_rbtree1_red(node)               ((node)->color = 1)
+#define nxt_rbtree1_black(node)             ((node)->color = 0)
+#define nxt_rbtree1_is_red(node)            ((node)->color)
+#define nxt_rbtree1_is_black(node)          (!nxt_rbtree1_is_red(node))
+#define nxt_rbtree1_copy_color(n1, n2)      (n1->color = n2->color)
+
+
+/* a sentinel must be black */
+
+#define nxt_rbtree1_sentinel_init(node)  nxt_rbtree1_black(node)
+
+
+nxt_inline nxt_rbtree1_node_t *
+nxt_rbtree1_min(nxt_rbtree1_node_t *node, nxt_rbtree1_node_t *sentinel)
+{
+    while (node->left != sentinel) {
+        node = node->left;
+    }
+
+    return node;
+}