X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/7af82e29ef89d022e278f4d420b9c7c83416145a..64561039d3dec9e50b4eaf1b78b3edef71898383:/src/xbt/log.c

diff --git a/src/xbt/log.c b/src/xbt/log.c
index f8c7a2398f..b4e3010b4c 100644
--- a/src/xbt/log.c
+++ b/src/xbt/log.c
@@ -372,10 +372,17 @@ library itself, or test programs doing strange things) do not display the
 process identity (thus, fmt is '[%%r] %%l: [%%c/%%p] %%m%%n' in that case, and '[%%r]
 [%%c/%%p] %%m%%n' if they are at priority INFO).
 
-For now, there is only one format modifier: the precision field. You
-can for example specify %.4r to get the application age with 4
-numbers after the radix. Another limitation is that you cannot set
-specific layouts to the several priorities.
+For now, there is only two format modifiers: the precision and the
+width fields. You can for example specify %.4r to get the application
+age with 4 numbers after the radix, or %15p to get the process name
+on 15 columns. Finally, you can specify %10.6r to get the time on at
+most 10 columns, with 6 numbers after the radix. 
+
+Note that when specifying the width, it is filled with spaces. That
+is to say that for example %5r in your format is converted to "% 5f"
+for printf (note the extra space); there is no way to fill the empty
+columns with 0 (ie, pass "%05f" to printf). Another limitation is
+that you cannot set specific layouts to the several priorities.
 
 \subsection log_use_conf_app 3.1.4 Category appender
 
@@ -1053,13 +1060,11 @@ void xbt_log_layout_set(xbt_log_category_t cat, xbt_log_layout_t lay)
          cat->name);
     xbt_log_appender_set(cat, xbt_log_appender_file_new(NULL));
   }
-  if (cat->layout && cat != &_XBT_LOGV(root)) {
-    /* better leak the default layout than check every categories to
-       change it */
+  if (cat->layout) {
     if (cat->layout->free_) {
       cat->layout->free_(cat->layout);
-      free(cat->layout);
     }
+    free(cat->layout);
   }
   cat->layout = lay;
   xbt_log_additivity_set(cat, 0);