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| author | Victor Stinner <victor.stinner@gmail.com> | 2017-10-16 15:44:31 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-10-16 15:44:31 (GMT) |
| commit | bdaeb7d237462a629e6c85001317faa85f94a0c6 (patch) | |
| tree | 65dd0eb7017f7cb7dc79467afb655d3b56337100 /Modules | |
| parent | 0df19055c92a0b0728659807978e4ca4d6c8e1bc (diff) | |
| download | cpython-bdaeb7d237462a629e6c85001317faa85f94a0c6.zip cpython-bdaeb7d237462a629e6c85001317faa85f94a0c6.tar.gz cpython-bdaeb7d237462a629e6c85001317faa85f94a0c6.tar.bz2 | |
bpo-31773: _PyTime_GetPerfCounter() uses _PyTime_t (GH-3983)
* Rewrite win_perf_counter() to only use integers internally.
* Add _PyTime_MulDiv() which compute "ticks * mul / div"
in two parts (int part and remaining) to prevent integer overflow.
* Clock frequency is checked at initialization for integer overflow.
* Enhance also pymonotonic() to reduce the precision loss on macOS
(mach_absolute_time() clock).
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/timemodule.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Modules/timemodule.c b/Modules/timemodule.c index 3cb1b4e..6af9a90 100644 --- a/Modules/timemodule.c +++ b/Modules/timemodule.c @@ -91,11 +91,12 @@ floatclock(_Py_clock_info_t *info) static PyObject* perf_counter(_Py_clock_info_t *info) { - double t; - if (_PyTime_GetPerfCounterDoubleWithInfo(&t, info) < 0) { + _PyTime_t t; + if (_PyTime_GetPerfCounterWithInfo(&t, info) < 0) { return NULL; } - return PyFloat_FromDouble(t); + double d = _PyTime_AsSecondsDouble(t); + return PyFloat_FromDouble(d); } #if defined(MS_WINDOWS) || defined(HAVE_CLOCK) |