From ad95c2d25c5fe5c4c88b73de2c60722ba56572e9 Mon Sep 17 00:00:00 2001 From: Victor Stinner Date: Wed, 28 Mar 2012 02:54:15 +0200 Subject: [PATCH] time.time() now uses clock_gettime(CLOCK_REALTIME) if available clock_gettime(CLOCK_REALTIME) has a better resolution than gettimeofday(). time.time() falls back on gettimeofday() (and then on other functions) on error. --- Modules/timemodule.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Modules/timemodule.c b/Modules/timemodule.c index c99c0a934b..f44e0c40c4 100644 --- a/Modules/timemodule.c +++ b/Modules/timemodule.c @@ -1088,6 +1088,17 @@ static PyObject* floattime(void) { _PyTime_timeval t; +#ifdef HAVE_CLOCK_GETTIME + struct timespec tp; + int ret; + + /* _PyTime_gettimeofday() does not use clock_gettime() + because it would require to link Python to the rt (real-time) + library, at least on Linux */ + ret = clock_gettime(CLOCK_REALTIME, &tp); + if (ret == 0) + return PyFloat_FromDouble(tp.tv_sec + tp.tv_nsec * 1e-9); +#endif _PyTime_gettimeofday(&t); return PyFloat_FromDouble((double)t.tv_sec + t.tv_usec * 1e-6); } -- 2.40.0