blob: 35e14c9626e7ffb09cf1923c7d01c6e4dc4ab8df (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
"""Compare timing of plain vs. yield-from calls."""
import gc
import time
def plain(n):
if n <= 0:
return 1
l = plain(n-1)
r = plain(n-1)
return l + 1 + r
def coroutine(n):
if n <= 0:
return 1
l = yield from coroutine(n-1)
r = yield from coroutine(n-1)
return l + 1 + r
def submain(depth):
t0 = time.time()
k = plain(depth)
t1 = time.time()
fmt = ' {} {} {:-9,.5f}'
delta0 = t1-t0
print(('plain' + fmt).format(depth, k, delta0))
t0 = time.time()
try:
g = coroutine(depth)
while True:
next(g)
except StopIteration as err:
k = err.value
t1 = time.time()
delta1 = t1-t0
print(('coro.' + fmt).format(depth, k, delta1))
if delta0:
print(('relat' + fmt).format(depth, k, delta1/delta0))
def main(reasonable=16):
gc.disable()
for depth in range(reasonable):
submain(depth)
if __name__ == '__main__':
main()
|
