Implementing the monotonic clock if available, per e-mail from Phil Vandry dated...

[freeglut] / src / x11 / freeglut_main_x11.c

diff --git a/src/x11/freeglut_main_x11.c b/src/x11/freeglut_main_x11.c
index 33553e3..75bc54c 100644 (file)
--- a/src/x11/freeglut_main_x11.c
+++ b/src/x11/freeglut_main_x11.c
@@ -91,11 +91,17 @@ void fgPlatformDisplayWindow ( SFG_Window *window )
 
 unsigned long fgPlatformSystemTime ( void )
 {
+#ifdef CLOCK_MONOTONIC
+    struct timespec now;
+    clock_gettime(CLOCK_MONOTONIC, &now);
+    return now.tv_nsec/1000000 + now.tv_sec*1000;
+#else
 #ifdef HAVE_GETTIMEOFDAY
     struct timeval now;
     gettimeofday( &now, NULL );
     return now.tv_usec/1000 + now.tv_sec*1000;
 #endif
+#endif
 }
 
 /*