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From rpl...@apache.org
Subject svn commit: r783734 - in /httpd/httpd/trunk: CHANGES modules/mappers/mod_rewrite.c
Date Thu, 11 Jun 2009 12:19:44 GMT
Author: rpluem
Date: Thu Jun 11 12:19:44 2009
New Revision: 783734

URL: http://svn.apache.org/viewvc?rev=783734&view=rev
Log:
* Remove locking for writing to the rewritelog. There seems to be no reason
  why locking is required here.
  See also: http://marc.info/?l=apache-httpd-dev&m=124282193217344&w=2

PR: 46942
Submitted by:  Dan Poirier <poirier pobox.com>
Reviewed by: rpluem

Modified:
    httpd/httpd/trunk/CHANGES
    httpd/httpd/trunk/modules/mappers/mod_rewrite.c

Modified: httpd/httpd/trunk/CHANGES
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?rev=783734&r1=783733&r2=783734&view=diff
==============================================================================
--- httpd/httpd/trunk/CHANGES [utf-8] (original)
+++ httpd/httpd/trunk/CHANGES [utf-8] Thu Jun 11 12:19:44 2009
@@ -6,6 +6,9 @@
      mod_proxy_ajp: Avoid delivering content from a previous request which
      failed to send a request body. PR 46949 [Ruediger Pluem]
 
+  *) mod_rewrite: Remove locking for writing to the rewritelog.
+      PR 46942 [Dan Poirier <poirier pobox.com>]
+
   *) mod_alias: check sanity in Redirect arguments.
      PR 44729 [Sönke Tesch <st kino-fahrplan.de>, Jim Jagielski]
 

Modified: httpd/httpd/trunk/modules/mappers/mod_rewrite.c
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/mappers/mod_rewrite.c?rev=783734&r1=783733&r2=783734&view=diff
==============================================================================
--- httpd/httpd/trunk/modules/mappers/mod_rewrite.c (original)
+++ httpd/httpd/trunk/modules/mappers/mod_rewrite.c Thu Jun 11 12:19:44 2009
@@ -385,10 +385,6 @@
 static const char *lockname;
 static apr_global_mutex_t *rewrite_mapr_lock_acquire = NULL;
 
-#ifndef REWRITELOG_DISABLED
-static apr_global_mutex_t *rewrite_log_lock = NULL;
-#endif
-
 /* Optional functions imported from mod_ssl when loaded: */
 static APR_OPTIONAL_FN_TYPE(ssl_var_lookup) *rewrite_ssl_lookup = NULL;
 static APR_OPTIONAL_FN_TYPE(ssl_is_https) *rewrite_is_https = NULL;
@@ -489,7 +485,6 @@
     const char *rhost, *rname;
     apr_size_t nbytes;
     int redir;
-    apr_status_t rv;
     request_rec *req;
     va_list ap;
 
@@ -535,23 +530,9 @@
     if (!conf->rewritelogfp || level > conf->rewriteloglevel)
         return;
 
-    rv = apr_global_mutex_lock(rewrite_log_lock);
-    if (rv != APR_SUCCESS) {
-        ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
-                      "apr_global_mutex_lock(rewrite_log_lock) failed");
-        /* XXX: Maybe this should be fatal? */
-    }
-
     nbytes = strlen(logline);
     apr_file_write(conf->rewritelogfp, logline, &nbytes);
 
-    rv = apr_global_mutex_unlock(rewrite_log_lock);
-    if (rv != APR_SUCCESS) {
-        ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
-                      "apr_global_mutex_unlock(rewrite_log_lock) failed");
-        /* XXX: Maybe this should be fatal? */
-    }
-
     return;
 }
 #endif /* !REWRITELOG_DISABLED */
@@ -4326,26 +4307,6 @@
     /* check if proxy module is available */
     proxy_available = (ap_find_linked_module("mod_proxy.c") != NULL);
 
-#ifndef REWRITELOG_DISABLED
-    /* create the rewriting lockfiles in the parent */
-    if ((rv = apr_global_mutex_create(&rewrite_log_lock, NULL,
-                                      APR_LOCK_DEFAULT, p)) != APR_SUCCESS) {
-        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, s,
-                     "mod_rewrite: could not create rewrite_log_lock");
-        return HTTP_INTERNAL_SERVER_ERROR;
-    }
-
-#ifdef AP_NEED_SET_MUTEX_PERMS
-    rv = ap_unixd_set_global_mutex_perms(rewrite_log_lock);
-    if (rv != APR_SUCCESS) {
-        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, s,
-                     "mod_rewrite: Could not set permissions on "
-                     "rewrite_log_lock; check User and Group directives");
-        return HTTP_INTERNAL_SERVER_ERROR;
-    }
-#endif /* perms */
-#endif /* rewritelog */
-
     rv = rewritelock_create(s, p);
     if (rv != APR_SUCCESS) {
         return HTTP_INTERNAL_SERVER_ERROR;
@@ -4392,14 +4353,6 @@
         }
     }
 
-#ifndef REWRITELOG_DISABLED
-    rv = apr_global_mutex_child_init(&rewrite_log_lock, NULL, p);
-    if (rv != APR_SUCCESS) {
-        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, s,
-                     "mod_rewrite: could not init rewrite log lock in child");
-    }
-#endif
-
     /* create the lookup cache */
     if (!init_cache(p)) {
         ap_log_error(APLOG_MARK, APLOG_CRIT, rv, s,



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