mod_log_config: instead of using the new dedicated

pattern format "%M" for duration milliseconds,
overload the existing "%D" to choose the time precision
("%{s}D" for seconds, "%{ms}D" for milliseconds and
"%{us}D" for microseconds).

The existing %T and %D without precision are kept for
compatibility.

The previously introduced "%M" (r1677187) is removed,
it has not yet been released. Format pattern characters
are rare, so we should only use a new one if an
existing one isn't a good fit.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1680895 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 18 insertions, 12 deletions

diff --git a/modules/loggers/mod_log_config.c b/modules/loggers/mod_log_config.c
index 6d93f75dc4..fd3f5f6670 100644
--- a/modules/loggers/mod_log_config.c
+++ b/modules/loggers/mod_log_config.c
@@ -101,8 +101,10 @@
  * %...{format}t:  The time, in the form given by format, which should
  *                 be in strftime(3) format.
  * %...T:  the time taken to serve the request, in seconds.
- * %...M:  the time taken to serve the request, in milliseconds
  * %...D:  the time taken to serve the request, in micro seconds.
+ * %...{s}D:  the time taken to serve the request, in seconds, same as %T.
+ * %...{us}D:  the time taken to serve the request, in micro seconds, same as %D.
+ * %...{ms}D:  the time taken to serve the request, in milliseconds.
  * %...u:  remote user (from auth; may be bogus if return status (%s) is 401)
  * %...U:  the URL path requested.
  * %...v:  the configured name of the server (i.e. which virtual host?)
@@ -803,17 +805,22 @@ static const char *log_request_duration(request_rec *r, char *a)
     return apr_psprintf(r->pool, "%" APR_TIME_T_FMT, apr_time_sec(duration));
 }
 
-static const char *log_request_duration_milliseconds(request_rec *r, char *a)
+static const char *log_request_duration_scaled(request_rec *r, char *a)
 {
     apr_time_t duration = get_request_end_time(r) - r->request_time;
-    return apr_psprintf(r->pool, "%" APR_TIME_T_FMT, apr_time_as_msec(duration));
-}
-
-
-static const char *log_request_duration_microseconds(request_rec *r, char *a)
-{
-    return apr_psprintf(r->pool, "%" APR_TIME_T_FMT,
-                        (get_request_end_time(r) - r->request_time));
+    if (*a == '\0' || !strcasecmp(a, "us")) {
+    }
+    else if (!strcasecmp(a, "ms")) {
+        duration = apr_time_as_msec(duration);
+    }
+    else if (!strcasecmp(a, "s")) {
+        duration = apr_time_sec(duration);
+    }
+    else {
+        /* bogus format */
+        return a;
+    }
+    return apr_psprintf(r->pool, "%" APR_TIME_T_FMT, duration);
 }
 
 /* These next two routines use the canonical name:port so that log
@@ -1844,8 +1851,7 @@ static int log_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
         log_pfn_register(p, "C", log_cookie, 0);
         log_pfn_register(p, "k", log_requests_on_connection, 0);
         log_pfn_register(p, "r", log_request_line, 1);
-        log_pfn_register(p, "D", log_request_duration_microseconds, 1);
-        log_pfn_register(p, "M", log_request_duration_milliseconds, 1);
+        log_pfn_register(p, "D", log_request_duration_scaled, 1);
         log_pfn_register(p, "T", log_request_duration, 1);
         log_pfn_register(p, "U", log_request_uri, 1);
         log_pfn_register(p, "s", log_status, 1);