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#!/usr/bin/python3
# cython: language_level=3
# micro benchmarks for coroutines
COUNT = 100000
import cython
async def done(n):
return n
@cython.locals(N=cython.Py_ssize_t)
async def count_to(N):
count = 0
for i in range(N):
count += await done(i)
return count
async def await_all(*coroutines):
count = 0
for coro in coroutines:
count += await coro
return count
@cython.locals(N=cython.Py_ssize_t)
def bm_await_nested(N):
return await_all(
count_to(N),
await_all(
count_to(N),
await_all(*[count_to(COUNT // i) for i in range(1, N+1)]),
count_to(N)),
count_to(N))
def await_one(coro):
a = coro.__await__()
try:
while True:
await_one(next(a))
except StopIteration as exc:
result = exc.args[0] if exc.args else None
else:
result = 0
return result
def time(fn, *args):
from time import time
begin = time()
result = await_one(fn(*args))
end = time()
return result, end-begin
def benchmark(N):
times = []
for _ in range(N):
result, t = time(bm_await_nested, 1000)
times.append(t)
assert result == 8221043302, result
return times
main = benchmark
if __name__ == "__main__":
import optparse
parser = optparse.OptionParser(
usage="%prog [options]",
description="Micro benchmarks for generators.")
import util
util.add_standard_options_to(parser)
options, args = parser.parse_args()
util.run_benchmark(options, options.num_runs, benchmark)
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