diff options
author | Paul Eggert <eggert@cs.ucla.edu> | 2005-11-10 20:20:20 +0000 |
---|---|---|
committer | Paul Eggert <eggert@cs.ucla.edu> | 2005-11-10 20:20:20 +0000 |
commit | 163141255f74334d90f7612d77ec637efd5ae7f7 (patch) | |
tree | 0014f6b0ef86e6fddb3d366d05967047024aea52 | |
parent | 14f7ef9d17d36fbee034543c9fc57240fb2a6d14 (diff) | |
download | coreutils-163141255f74334d90f7612d77ec637efd5ae7f7.tar.xz |
Include "timespec.h" rather than the sys/time / time
business.
(gethrxtime) [! (HAVE_NANOUPTIME
|| (defined CLOCK_MONOTONIC && HAVE_CLOCK_GETTIME)
|| HAVE_MICROUPTIME)]: Fall back on gettime rather than rolling
our own approximation.
-rw-r--r-- | lib/gethrxtime.c | 28 |
1 files changed, 9 insertions, 19 deletions
diff --git a/lib/gethrxtime.c b/lib/gethrxtime.c index 2c985789d..6ece8ae18 100644 --- a/lib/gethrxtime.c +++ b/lib/gethrxtime.c @@ -24,20 +24,12 @@ #include "gethrxtime.h" -#include <sys/types.h> -#if TIME_WITH_SYS_TIME -# include <sys/time.h> -# include <time.h> -#else -# if HAVE_SYS_TIME_H -# include <sys/time.h> -# else -# include <time.h> -# endif -#endif +#include "timespec.h" -/* Get the time of a high-resolution clock, preferably one that is not - subject to resetting or drifting. */ +/* Get the current time, as a count of the number of nanoseconds since + an arbitrary epoch (e.g., the system boot time). Prefer a + high-resolution clock that is not subject to resetting or + drifting. */ xtime_t gethrxtime (void) @@ -65,16 +57,14 @@ gethrxtime (void) return xtime_make (tv.tv_sec, 1000 * tv.tv_usec); } +# else /* No monotonically increasing clocks are available; fall back on a clock that might jump backwards, since it's the best we can do. */ -# elif HAVE_GETTIMEOFDAY && XTIME_PRECISION != 1 { - struct timeval tv; - gettimeofday (&tv, NULL); - return xtime_make (tv.tv_sec, 1000 * tv.tv_usec); + struct timespec ts; + gettime (&ts); + return xtime_make (ts.tv_sec, ts.tv_nsec); } -# else - return xtime_make (time (NULL), 0); # endif #endif } |