[Kst] extragear/graphics/kst/kst

[George Staikos]

SVN commit 409737 by staikos:

make it threadsafe


 M  +8 -6      trunk/extragear/graphics/kst/kst/kst2dplot.cpp  


--- trunk/extragear/graphics/kst/kst/kst2dplot.cpp #409736:409737
@@ -6748,14 +6748,16 @@
 
 
 double Kst2DPlot::timezoneHrs() {
-  double timezoneHrs;
   time_t t;
-  
   time(&t);
-  timezoneHrs  = difftime(mktime(gmtime(&t)), mktime(localtime(&t)));
-  timezoneHrs /= -60.0 * 60.0;
-
-  return timezoneHrs;
+  tm gmtResult;
+  tm ltResult;
+  tm *gmtRc = gmtime_r(&t, &gmtResult);
+  tm *ltRc = localtime_r(&t, &ltResult);
+  if (!gmtRc || !ltRc) {
+    return 0.0;
+  }
+  return difftime(mktime(gmtRc), mktime(ltRc)) / (-60.0 * 60.0);
 }