gras: added backup for failing clock_gettime

1 files changed, 9 insertions, 2 deletions

diff --git a/include/gras/detail/chrono.hpp b/include/gras/detail/chrono.hpp
index bd247e5..9fe317a 100644
--- a/include/gras/detail/chrono.hpp
+++ b/include/gras/detail/chrono.hpp
@@ -29,6 +29,7 @@ namespace gras
 #else
 
 #include <ctime>
+#include <sys/time.h>
 
 namespace gras
 {
@@ -36,8 +37,14 @@ namespace gras
     GRAS_FORCE_INLINE time_ticks_t time_now(void)
     {
         struct timespec ts;
-        clock_gettime(CLOCK_MONOTONIC, &ts);
-        return ts.tv_sec*1000000000UL + ts.tv_nsec;
+        if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
+            return ts.tv_sec*1000000000UL + ts.tv_nsec;
+
+        struct timeval tv;
+        if (gettimeofday(&tv, NULL) == 0)
+            return tv.tv_sec*1000000000UL + tv.tv_usec*1000UL;
+
+        return 0;
     }
 
     GRAS_FORCE_INLINE time_ticks_t time_tps(void)