[xbuild] Add support for multi-targeting arbitrary frameworks.

[mono.git] / eglib / src / gtimer-win32.c

diff --git a/eglib/src/gtimer-win32.c b/eglib/src/gtimer-win32.c
index f9418efa4a7378a981745892ce05023b8eeba5f9..07e802bda13c670e80af079eb865e0068a3cab49 100644 (file)
--- a/eglib/src/gtimer-win32.c
+++ b/eglib/src/gtimer-win32.c
@@ -68,9 +68,14 @@ g_timer_stop (GTimer *timer)
 gdouble
 g_timer_elapsed (GTimer *timer, gulong *microseconds)
 {
-       guint64 stop;
-       guint64 freq;
-       gdouble seconds;
+       static guint64 freq = 0;
+       guint64 delta, stop;
+
+       if (freq == 0) {
+               if (!QueryPerformanceFrequency ((LARGE_INTEGER *)&freq))
+                       freq = 1;
+       }
+
        if (timer->stop == 0) {
                QueryPerformanceCounter ((LARGE_INTEGER*)&stop);
        }
@@ -78,13 +83,12 @@ g_timer_elapsed (GTimer *timer, gulong *microseconds)
                stop = timer->stop;
        }
 
-       QueryPerformanceFrequency ((LARGE_INTEGER*)&freq);
-       seconds = 1.0 * (stop - timer->start) / freq;
+       delta = stop - timer->start;
 
-       if (microseconds) {
-               *microseconds = (gulong)(1000000.0 * (stop - timer->start) / freq);
-       }
-       return seconds;
+       if (microseconds)
+               *microseconds = (gulong) (delta * (1000000.0 / freq));
+
+       return (gdouble) delta / (gdouble) freq;
 }