config: Speed up graceful restarts by using pre-hashed command table.…

… PR 64066.

        [Giovanni Bechis <giovanni paclan.it>, Jim Jagielski]


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1872786 13f79535-47bb-0310-9956-ffa450edef68

CHANGES

@@ -1,6 +1,9 @@
  -*- coding: utf-8 -*-
 Changes with Apache 2.5.1
 
+ *) config: Speed up graceful restarts by using pre-hashed command table. PR 64066.
+ [Giovanni Bechis <giovanni paclan.it>, Jim Jagielski]
+
  *) mod_lua: Add r:headers_in_table, r:headers_out_table, r:err_headers_out_table,
  r:notes_table, r:subprocess_env_table as read-only native table alternatives
  that can be iterated over. [Eric Covener]

server/config.c

@@ -1120,8 +1120,9 @@ static const char *ap_build_config_sub(apr_pool_t *p, apr_pool_t *temp_pool,
  const char *args;
  char *cmd_name;
  ap_directive_t *newdir;
- module *mod = ap_top_module;
  const command_rec *cmd;
+ ap_mod_list *ml;
+ char *lname;
 
  if (*l == '#' || *l == '\0')
  return NULL;
@@ -1159,9 +1160,12 @@ static const char *ap_build_config_sub(apr_pool_t *p, apr_pool_t *temp_pool,
  newdir->line_num = parms->config_file->line_number;
  newdir->args = apr_pstrdup(p, args);
 
- if ((cmd = ap_find_command_in_modules(cmd_name, &mod)) != NULL) {
+ lname = apr_pstrdup(temp_pool, cmd_name);
+ ap_str_tolower(lname);
+ ml = apr_hash_get(ap_config_hash, lname, APR_HASH_KEY_STRING);
+
+ if (ml && (cmd = ml->cmd) != NULL) {
  newdir->directive = cmd->name;
-
  if (cmd->req_override & EXEC_ON_READ) {
  ap_directive_t *sub_tree = NULL;