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comparison src/http/ngx_http_variables.c @ 422:88d3e895bdf9 NGINX_0_7_23

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nginx 0.7.23 *) Feature: the "delete" and "ranges" parameters in the "geo" directive. *) Feature: speeding up loading of geo base with large number of values. *) Feature: decrease of memory required for geo base load.
author Igor Sysoev <http://sysoev.ru>
date Thu, 27 Nov 2008 00:00:00 +0300
parents ad0a34a8efa6
children 9da1d9d94d18
comparison
equal deleted inserted replaced
421:10e4013f5f54 422:88d3e895bdf9
1631 1631
1632 cmcf->variables_keys = NULL; 1632 cmcf->variables_keys = NULL;
1633 1633
1634 return NGX_OK; 1634 return NGX_OK;
1635 } 1635 }
1636
1637
1638 void
1639 ngx_http_variable_value_rbtree_insert(ngx_rbtree_node_t *temp,
1640 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
1641 {
1642 ngx_rbtree_node_t **p;
1643 ngx_http_variable_value_node_t *vvn, *vvt;
1644
1645 for ( ;; ) {
1646
1647 vvn = (ngx_http_variable_value_node_t *) node;
1648 vvt = (ngx_http_variable_value_node_t *) temp;
1649
1650 if (node->key != temp->key) {
1651
1652 p = (node->key < temp->key) ? &temp->left : &temp->right;
1653
1654 } else if (vvn->len != vvt->len) {
1655
1656 p = (vvn->len < vvt->len) ? &temp->left : &temp->right;
1657
1658 } else {
1659 p = (ngx_memcmp(vvn->value->data, vvt->value->data, vvn->len) < 0)
1660 ? &temp->left : &temp->right;
1661 }
1662
1663 if (*p == sentinel) {
1664 break;
1665 }
1666
1667 temp = *p;
1668 }
1669
1670 *p = node;
1671 node->parent = temp;
1672 node->left = sentinel;
1673 node->right = sentinel;
1674 ngx_rbt_red(node);
1675 }
1676
1677
1678 ngx_http_variable_value_t *
1679 ngx_http_variable_value_lookup(ngx_rbtree_t *rbtree, ngx_str_t *val,
1680 uint32_t hash)
1681 {
1682 ngx_int_t rc;
1683 ngx_rbtree_node_t *node, *sentinel;
1684 ngx_http_variable_value_node_t *vvn;
1685
1686 node = rbtree->root;
1687 sentinel = rbtree->sentinel;
1688
1689 while (node != sentinel) {
1690
1691 vvn = (ngx_http_variable_value_node_t *) node;
1692
1693 if (hash != node->key) {
1694 node = (hash < node->key) ? node->left : node->right;
1695 continue;
1696 }
1697
1698 if (val->len != vvn->len) {
1699 node = (val->len < vvn->len) ? node->left : node->right;
1700 continue;
1701 }
1702
1703 rc = ngx_memcmp(val->data, vvn->value->data, val->len);
1704
1705 if (rc < 0) {
1706 node = node->left;
1707 continue;
1708 }
1709
1710 if (rc > 0) {
1711 node = node->right;
1712 continue;
1713 }
1714
1715 return vvn->value;
1716 }
1717
1718 return NULL;
1719 }