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Issue #22117: time.monotonic() now uses the new _PyTime_t API

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* Add _PyTime_FromNanoseconds()
* Add _PyTime_AsSecondsDouble()
* Add unit tests for _PyTime_AsSecondsDouble()
This commit is contained in:
Victor Stinner 2015-03-27 22:27:24 +01:00
parent 52d1493c0c
commit 4bfb460d88
5 changed files with 121 additions and 15 deletions
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26
Python/pytime.c
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@ -405,6 +405,15 @@ _PyTime_overflow(void)
"timestamp too large to convert to C _PyTime_t");
}
_PyTime_t
_PyTime_FromNanoseconds(PY_LONG_LONG ns)
{
_PyTime_t t;
assert(sizeof(PY_LONG_LONG) <= sizeof(_PyTime_t));
t = Py_SAFE_DOWNCAST(ns, PY_LONG_LONG, _PyTime_t);
return t;
}
#if !defined(MS_WINDOWS) && !defined(__APPLE__)
static int
_PyTime_FromTimespec(_PyTime_t *tp, struct timespec *ts)
@ -470,6 +479,17 @@ _PyTime_FromSecondsObject(_PyTime_t *t, PyObject *obj, _PyTime_round_t round)
}
}
double
_PyTime_AsSecondsDouble(_PyTime_t t)
{
_PyTime_t sec, ns;
/* Divide using integers to avoid rounding issues on the integer part.
1e-9 cannot be stored exactly in IEEE 64-bit. */
sec = t / SEC_TO_NS;
ns = t % SEC_TO_NS;
return (double)sec + (double)ns * 1e-9;
}
PyObject *
_PyTime_AsNanosecondsObject(_PyTime_t t)
{
@ -660,6 +680,12 @@ _PyTime_GetMonotonicClock(void)
return t;
}
int
_PyTime_GetMonotonicClockWithInfo(_PyTime_t *tp, _Py_clock_info_t *info)
{
return pymonotonic_new(tp, info, 1);
}
int
_PyTime_Init(void)
{