bpo-31773: time.perf_counter() uses again double (GH-3964)

time.clock() and time.perf_counter() now use again C double
internally.

Remove also _PyTime_GetWinPerfCounterWithInfo(): use
_PyTime_GetPerfCounterDoubleWithInfo() instead on Windows.

1 files changed, 12 insertions, 11 deletions

diff --git a/Include/pytime.h b/Include/pytime.h
index 95d482f..fd95045 100644
--- a/Include/pytime.h
+++ b/Include/pytime.h
@@ -192,20 +192,21 @@ PyAPI_FUNC(int) _PyTime_localtime(time_t t, struct tm *tm);
    Return 0 on success, raise an exception and return -1 on error. */
 PyAPI_FUNC(int) _PyTime_gmtime(time_t t, struct tm *tm);
 
-#ifdef MS_WINDOWS
-PyAPI_FUNC(int) _PyTime_GetWinPerfCounterWithInfo(
-    _PyTime_t *t,
-    _Py_clock_info_t *info);
-#endif
+/* Get the performance counter: clock with the highest available resolution to
+   measure a short duration.
+
+   The function cannot fail. _PyTime_Init() ensures that the system clock
+   works. */
+PyAPI_FUNC(double) _PyTime_GetPerfCounterDouble(void);
 
 /* Get the performance counter: clock with the highest available resolution to
-   measure a short duration. */
-PyAPI_FUNC(_PyTime_t) _PyTime_GetPerfCounter(void);
+   measure a short duration.
 
-/* Similar to _PyTime_GetPerfCounter(),
-   but get also clock info if info is non-NULL. */
-PyAPI_FUNC(int) _PyTime_GetPerfCounterWithInfo(
-    _PyTime_t *t,
+   Fill info (if set) with information of the function used to get the time.
+
+   Return 0 on success, raise an exception and return -1 on error. */
+PyAPI_FUNC(int) _PyTime_GetPerfCounterDoubleWithInfo(
+    double *t,
     _Py_clock_info_t *info);
 
 #ifdef __cplusplus