time.c: use `clock_gettime()` if possible.
#endif
#include <stdlib.h>
+#include <unistd.h>
#define NDIV(x,y) (-(-((x)+1)/(y))-1)
#define TO_S_FMT "%Y-%m-%d %H:%M:%S "
@@ -382,6 +383,13 @@ current_mrb_time(mrb_state *mrb)
sec = ts.tv_sec;
usec = ts.tv_nsec / 1000;
}
+#elif (defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0) && defined(_POSIX_MONOTONIC_CLOCK)
+ {
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ sec = ts.tv_sec;
+ usec = ts.tv_nsec / 1000;
+ }
#elif defined(NO_GETTIMEOFDAY)
{
static time_t last_sec = 0, last_usec = 0;
