2 files changed, 13 insertions, 1 deletions

diff --git a/Spear/Sys/Timer/timer.c b/Spear/Sys/Timer/timer.c
index 8487f48..4a2fb2b 100644
--- a/Spear/Sys/Timer/timer.c
+++ b/Spear/Sys/Timer/timer.c
@@ -48,7 +48,7 @@ void time_now(time_point* t) {
 #ifdef _WIN32

   QueryPerformanceCounter((LARGE_INTEGER*)t);

 #else

-  clock_gettime(CLOCK_REALTIME, t);

+  clock_gettime(CLOCK_MONOTONIC_RAW, t);

 #endif

 }

 

@@ -87,6 +87,15 @@ uint64_t time_point_to_ns(time_point* t) {
 #endif

 }

 

+void time_add(const time_point* t, time_delta dt, time_point* out) {

+#ifdef _WIN32

+  *out = *t + dt;

+#else

+  out->tv_sec  = t->tv_sec + (dt / nanoseconds);

+  out->tv_nsec = t->tv_nsec + (dt % nanoseconds);

+#endif

+}

+

 void time_sleep(time_delta dt) {

 #ifdef _WIN32

   const int64_t ms = dt / microseconds;

diff --git a/Spear/Sys/Timer/timer.h b/Spear/Sys/Timer/timer.h
index e426135..da4e7c7 100644
--- a/Spear/Sys/Timer/timer.h
+++ b/Spear/Sys/Timer/timer.h
@@ -53,6 +53,9 @@ time_delta sec_to_time_delta(double seconds);
 /// Convert the time point to nanoseconds.
 uint64_t time_point_to_ns(time_point*);
 
+/// Add a time delta to a timestamp.
+void time_add(const time_point*, time_delta, time_point* out);
+
 /// Put the caller thread to sleep for the given amount of time.
 void time_sleep(time_delta dt);