Hi all,
I believe this problem has been brought to your attention before. But,
perhaps it something that can be added to the bug list.
I'm using a proprietary Windows library which unfortunately uses callbacks
a lot. I've attached a simple test case. Under pypy 1.7, this runs about 8
times slower than CPython 2.7.
Best, -arman
from ctypes import *
import timeit
def py_cmp_func(a, b):
return a[0] - b[0]
CMPFUNC = CFUNCTYPE(c_int, POINTER(c_int), POINTER(c_int))
cmp_func = CMPFUNC(py_cmp_func)
int_size = sizeof(c_int)
LEN = 5
IntArray5 = c_int * LEN
ia = IntArray5(5, 1, 7, 33, 99)
qsort = cdll.msvcrt.qsort
def f():
qsort(ia, LEN, int_size, cmp_func)
print timeit.repeat("f()", "from __main__ import f", number=100000)
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