# When this program is run on windows using python 3.9.9 it crashes about 50%
# of the time.

import faulthandler; faulthandler.enable()

import _testcapi
import threading
import sys

NTHREAD = 4
#NTHREAD = 16

code = """
import _asyncio
print("exit subinterpreter")
"""

def doIt():
    _testcapi.run_in_subinterp(code)

def func():
    tt=[threading.Thread(target=doIt) for _ in range(NTHREAD)]
    for t in tt:
        t.start()
    for t in tt:
        t.join()

func()
print("exit main interpreter")