commit cba9a0c6def70549046f1afa6a80e38fe706520e
author Victor Stinner <victor.stinner@gmail.com> Thu Oct 12 08:51:56 2017 -0700
committer GitHub <noreply@github.com> Thu Oct 12 08:51:56 2017 -0700
tree 1700dda3a2a2170cc5d0766387fe6f020540c44c
parent 0e61e67a57deb4abc677808201d7cf3c38138e02

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.

Python/import.c

diff --git a/Python/import.c b/Python/import.c
index d396b4d..76aa912 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -1669,10 +1669,10 @@
     else {
         static int ximporttime = 0;
         static int import_level;
-        static _PyTime_t accumulated;
+        static double accumulated;
         _Py_IDENTIFIER(importtime);
 
-        _PyTime_t t1 = 0, accumulated_copy = accumulated;
+        double t1 = 0, accumulated_copy = accumulated;
 
         Py_XDECREF(mod);
 
@@ -1695,7 +1695,7 @@
 
         if (ximporttime) {
             import_level++;
-            t1 = _PyTime_GetPerfCounter();
+            t1 = _PyTime_GetPerfCounterDouble();
             accumulated = 0;
         }
 
@@ -1711,12 +1711,12 @@
                                            mod != NULL);
 
         if (ximporttime) {
-            _PyTime_t cum = _PyTime_GetPerfCounter() - t1;
+            double cum = _PyTime_GetPerfCounterDouble() - t1;
 
             import_level--;
             fprintf(stderr, "import time: %9ld | %10ld | %*s%s\n",
-                    (long)_PyTime_AsMicroseconds(cum - accumulated, _PyTime_ROUND_CEILING),
-                    (long)_PyTime_AsMicroseconds(cum, _PyTime_ROUND_CEILING),
+                    (long)ceil((cum - accumulated) * 1e6),
+                    (long)ceil(cum * 1e6),
                     import_level*2, "", PyUnicode_AsUTF8(abs_name));
 
             accumulated = accumulated_copy + cum;