"""Script used to test os.kill on Windows, for issue #1220212

This script is started as a subprocess in test_os and is used to test the

CTRL_C_EVENT and CTRL_BREAK_EVENT signals, which requires a custom handler

to be written into the kill target.

See http://msdn.microsoft.com/en-us/library/ms685049%28v=VS.85%29.aspx for a

similar example in C.

"""

from ctypes import wintypes, WINFUNCTYPE

import signal

import ctypes

import mmap

import sys

# Function prototype for the handler function. Returns BOOL, takes a DWORD.

HANDLER_ROUTINE = WINFUNCTYPE(wintypes.BOOL, wintypes.DWORD)

def _ctrl_handler(sig):

"""Handle a sig event and return 0 to terminate the process"""

if sig == signal.CTRL_C_EVENT:

pass

elif sig == signal.CTRL_BREAK_EVENT:

pass

else:

print("UNKNOWN EVENT")

return 0

ctrl_handler = HANDLER_ROUTINE(_ctrl_handler)

@ctypes.util.wrap_dll_function(ctypes.windll.kernel32)

def SetConsoleCtrlHandler(HandlerRoutine: HANDLER_ROUTINE,

Add: wintypes.BOOL) -> wintypes.BOOL:

pass

if __name__ == "__main__":

# Add our console control handling function with value 1

if not SetConsoleCtrlHandler(ctrl_handler, 1):

print("Unable to add SetConsoleCtrlHandler")

exit(-1)

# Awake main process

m = mmap.mmap(-1, 1, sys.argv[1])

m[0] = 1

# Do nothing but wait for the signal

while True:

pass