bpo-31784: Implement PEP 564: add time.time_ns() (#3989)
Add new time functions:
* time.clock_gettime_ns()
* time.clock_settime_ns()
* time.monotonic_ns()
* time.perf_counter_ns()
* time.process_time_ns()
* time.time_ns()
Add new _PyTime functions:
* _PyTime_FromTimespec()
* _PyTime_FromNanosecondsObject()
* _PyTime_FromTimeval()
Other changes:
* Add also os.times() tests to test_os.
* pytime_fromtimeval() and pytime_fromtimeval() now return
_PyTime_MAX or _PyTime_MIN on overflow, rather than undefined
behaviour
* _PyTime_FromNanoseconds() parameter type changes from long long to
_PyTime_t
diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py
index a08fd18..b44646d 100644
--- a/Lib/test/test_time.py
+++ b/Lib/test/test_time.py
@@ -64,6 +64,27 @@
self.assertFalse(info.monotonic)
self.assertTrue(info.adjustable)
+ def test_time_ns_type(self):
+ def check_ns(sec, ns):
+ self.assertIsInstance(ns, int)
+
+ sec_ns = int(sec * 1e9)
+ # tolerate a difference of 50 ms
+ self.assertLess((sec_ns - ns), 50 ** 6, (sec, ns))
+
+ check_ns(time.time(),
+ time.time_ns())
+ check_ns(time.monotonic(),
+ time.monotonic_ns())
+ check_ns(time.perf_counter(),
+ time.perf_counter_ns())
+ check_ns(time.process_time(),
+ time.process_time_ns())
+
+ if hasattr(time, 'clock_gettime'):
+ check_ns(time.clock_gettime(time.CLOCK_REALTIME),
+ time.clock_gettime_ns(time.CLOCK_REALTIME))
+
def test_clock(self):
with self.assertWarns(DeprecationWarning):
time.clock()
@@ -76,7 +97,8 @@
@unittest.skipUnless(hasattr(time, 'clock_gettime'),
'need time.clock_gettime()')
def test_clock_realtime(self):
- time.clock_gettime(time.CLOCK_REALTIME)
+ t = time.clock_gettime(time.CLOCK_REALTIME)
+ self.assertIsInstance(t, float)
@unittest.skipUnless(hasattr(time, 'clock_gettime'),
'need time.clock_gettime()')