static void __rb_rotate_left(struct rb_node *node, struct rb_root *root)
{
struct rb_node *right = node->rb_right;
+ struct rb_node *parent = rb_parent(node);
if ((node->rb_right = right->rb_left))
- right->rb_left->rb_parent = node;
+ rb_set_parent(right->rb_left, node);
right->rb_left = node;
- if ((right->rb_parent = node->rb_parent))
+ rb_set_parent(right, parent);
+
+ if (parent)
{
- if (node == node->rb_parent->rb_left)
- node->rb_parent->rb_left = right;
+ if (node == parent->rb_left)
+ parent->rb_left = right;
else
- node->rb_parent->rb_right = right;
+ parent->rb_right = right;
}
else
root->rb_node = right;
- node->rb_parent = right;
+ rb_set_parent(node, right);
}
static void __rb_rotate_right(struct rb_node *node, struct rb_root *root)
{
struct rb_node *left = node->rb_left;
+ struct rb_node *parent = rb_parent(node);
if ((node->rb_left = left->rb_right))
- left->rb_right->rb_parent = node;
+ rb_set_parent(left->rb_right, node);
left->rb_right = node;
- if ((left->rb_parent = node->rb_parent))
+ rb_set_parent(left, parent);
+
+ if (parent)
{
- if (node == node->rb_parent->rb_right)
- node->rb_parent->rb_right = left;
+ if (node == parent->rb_right)
+ parent->rb_right = left;
else
- node->rb_parent->rb_left = left;
+ parent->rb_left = left;
}
else
root->rb_node = left;
- node->rb_parent = left;
+ rb_set_parent(node, left);
}
void rb_insert_color(struct rb_node *node, struct rb_root *root)
{
struct rb_node *parent, *gparent;
- while ((parent = node->rb_parent) && parent->rb_color == RB_RED)
+ while ((parent = rb_parent(node)) && rb_is_red(parent))
{
- gparent = parent->rb_parent;
+ gparent = rb_parent(parent);
if (parent == gparent->rb_left)
{
{
register struct rb_node *uncle = gparent->rb_right;
- if (uncle && uncle->rb_color == RB_RED)
+ if (uncle && rb_is_red(uncle))
{
- uncle->rb_color = RB_BLACK;
- parent->rb_color = RB_BLACK;
- gparent->rb_color = RB_RED;
+ rb_set_black(uncle);
+ rb_set_black(parent);
+ rb_set_red(gparent);
node = gparent;
continue;
}
node = tmp;
}
- parent->rb_color = RB_BLACK;
- gparent->rb_color = RB_RED;
+ rb_set_black(parent);
+ rb_set_red(gparent);
__rb_rotate_right(gparent, root);
} else {
{
register struct rb_node *uncle = gparent->rb_left;
- if (uncle && uncle->rb_color == RB_RED)
+ if (uncle && rb_is_red(uncle))
{
- uncle->rb_color = RB_BLACK;
- parent->rb_color = RB_BLACK;
- gparent->rb_color = RB_RED;
+ rb_set_black(uncle);
+ rb_set_black(parent);
+ rb_set_red(gparent);
node = gparent;
continue;
}
node = tmp;
}
- parent->rb_color = RB_BLACK;
- gparent->rb_color = RB_RED;
+ rb_set_black(parent);
+ rb_set_red(gparent);
__rb_rotate_left(gparent, root);
}
}
- root->rb_node->rb_color = RB_BLACK;
+ rb_set_black(root->rb_node);
}
static void __rb_erase_color(struct rb_node *node, struct rb_node *parent,
{
struct rb_node *other;
- while ((!node || node->rb_color == RB_BLACK) && node != root->rb_node)
+ while ((!node || rb_is_black(node)) && node != root->rb_node)
{
if (parent->rb_left == node)
{
other = parent->rb_right;
- if (other->rb_color == RB_RED)
+ if (rb_is_red(other))
{
- other->rb_color = RB_BLACK;
- parent->rb_color = RB_RED;
+ rb_set_black(other);
+ rb_set_red(parent);
__rb_rotate_left(parent, root);
other = parent->rb_right;
}
- if ((!other->rb_left ||
- other->rb_left->rb_color == RB_BLACK)
- && (!other->rb_right ||
- other->rb_right->rb_color == RB_BLACK))
+ if ((!other->rb_left || rb_is_black(other->rb_left)) &&
+ (!other->rb_right || rb_is_black(other->rb_right)))
{
- other->rb_color = RB_RED;
+ rb_set_red(other);
node = parent;
- parent = node->rb_parent;
+ parent = rb_parent(node);
}
else
{
- if (!other->rb_right ||
- other->rb_right->rb_color == RB_BLACK)
+ if (!other->rb_right || rb_is_black(other->rb_right))
{
- register struct rb_node *o_left;
+ struct rb_node *o_left;
if ((o_left = other->rb_left))
- o_left->rb_color = RB_BLACK;
- other->rb_color = RB_RED;
+ rb_set_black(o_left);
+ rb_set_red(other);
__rb_rotate_right(other, root);
other = parent->rb_right;
}
- other->rb_color = parent->rb_color;
- parent->rb_color = RB_BLACK;
+ rb_set_color(other, rb_color(parent));
+ rb_set_black(parent);
if (other->rb_right)
- other->rb_right->rb_color = RB_BLACK;
+ rb_set_black(other->rb_right);
__rb_rotate_left(parent, root);
node = root->rb_node;
break;
else
{
other = parent->rb_left;
- if (other->rb_color == RB_RED)
+ if (rb_is_red(other))
{
- other->rb_color = RB_BLACK;
- parent->rb_color = RB_RED;
+ rb_set_black(other);
+ rb_set_red(parent);
__rb_rotate_right(parent, root);
other = parent->rb_left;
}
- if ((!other->rb_left ||
- other->rb_left->rb_color == RB_BLACK)
- && (!other->rb_right ||
- other->rb_right->rb_color == RB_BLACK))
+ if ((!other->rb_left || rb_is_black(other->rb_left)) &&
+ (!other->rb_right || rb_is_black(other->rb_right)))
{
- other->rb_color = RB_RED;
+ rb_set_red(other);
node = parent;
- parent = node->rb_parent;
+ parent = rb_parent(node);
}
else
{
- if (!other->rb_left ||
- other->rb_left->rb_color == RB_BLACK)
+ if (!other->rb_left || rb_is_black(other->rb_left))
{
register struct rb_node *o_right;
if ((o_right = other->rb_right))
- o_right->rb_color = RB_BLACK;
- other->rb_color = RB_RED;
+ rb_set_black(o_right);
+ rb_set_red(other);
__rb_rotate_left(other, root);
other = parent->rb_left;
}
- other->rb_color = parent->rb_color;
- parent->rb_color = RB_BLACK;
+ rb_set_color(other, rb_color(parent));
+ rb_set_black(parent);
if (other->rb_left)
- other->rb_left->rb_color = RB_BLACK;
+ rb_set_black(other->rb_left);
__rb_rotate_right(parent, root);
node = root->rb_node;
break;
}
}
if (node)
- node->rb_color = RB_BLACK;
+ rb_set_black(node);
}
void rb_erase(struct rb_node *node, struct rb_root *root)
while ((left = node->rb_left) != NULL)
node = left;
child = node->rb_right;
- parent = node->rb_parent;
- color = node->rb_color;
+ parent = rb_parent(node);
+ color = rb_color(node);
if (child)
- child->rb_parent = parent;
- if (parent)
- {
- if (parent->rb_left == node)
- parent->rb_left = child;
- else
- parent->rb_right = child;
- }
- else
- root->rb_node = child;
-
- if (node->rb_parent == old)
+ rb_set_parent(child, parent);
+ if (parent == old) {
+ parent->rb_right = child;
parent = node;
- node->rb_parent = old->rb_parent;
- node->rb_color = old->rb_color;
+ } else
+ parent->rb_left = child;
+
+ node->rb_parent_color = old->rb_parent_color;
node->rb_right = old->rb_right;
node->rb_left = old->rb_left;
- if (old->rb_parent)
+ if (rb_parent(old))
{
- if (old->rb_parent->rb_left == old)
- old->rb_parent->rb_left = node;
+ if (rb_parent(old)->rb_left == old)
+ rb_parent(old)->rb_left = node;
else
- old->rb_parent->rb_right = node;
+ rb_parent(old)->rb_right = node;
} else
root->rb_node = node;
- old->rb_left->rb_parent = node;
+ rb_set_parent(old->rb_left, node);
if (old->rb_right)
- old->rb_right->rb_parent = node;
+ rb_set_parent(old->rb_right, node);
goto color;
}
- parent = node->rb_parent;
- color = node->rb_color;
+ parent = rb_parent(node);
+ color = rb_color(node);
if (child)
- child->rb_parent = parent;
+ rb_set_parent(child, parent);
if (parent)
{
if (parent->rb_left == node)
n = n->rb_left;
return n;
}
-
-struct rb_node *rb_last(struct rb_root *root)
-{
- struct rb_node *n;
-
- n = root->rb_node;
- if (!n)
- return NULL;
- while (n->rb_right)
- n = n->rb_right;
- return n;
-}
-
-struct rb_node *rb_next(struct rb_node *node)
-{
- /* If we have a right-hand child, go down and then left as far
- as we can. */
- if (node->rb_right) {
- node = node->rb_right;
- while (node->rb_left)
- node=node->rb_left;
- return node;
- }
-
- /* No right-hand children. Everything down and left is
- smaller than us, so any 'next' node must be in the general
- direction of our parent. Go up the tree; any time the
- ancestor is a right-hand child of its parent, keep going
- up. First time it's a left-hand child of its parent, said
- parent is our 'next' node. */
- while (node->rb_parent && node == node->rb_parent->rb_right)
- node = node->rb_parent;
-
- return node->rb_parent;
-}
-
-struct rb_node *rb_prev(struct rb_node *node)
-{
- /* If we have a left-hand child, go down and then right as far
- as we can. */
- if (node->rb_left) {
- node = node->rb_left;
- while (node->rb_right)
- node=node->rb_right;
- return node;
- }
-
- /* No left-hand children. Go up till we find an ancestor which
- is a right-hand child of its parent */
- while (node->rb_parent && node == node->rb_parent->rb_left)
- node = node->rb_parent;
-
- return node->rb_parent;
-}
projects / fio.git / blobdiff