"""Script used to test os.kill on Windows, for issue #1220212
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This script is started as a subprocess in test_os and is used to test the
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CTRL_C_EVENT and CTRL_BREAK_EVENT signals, which requires a custom handler
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to be written into the kill target.
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See http://msdn.microsoft.com/en-us/library/ms685049%28v=VS.85%29.aspx for a
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similar example in C.
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"""
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from ctypes import wintypes, WINFUNCTYPE
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import signal
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import ctypes
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import mmap
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import sys
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# Function prototype for the handler function. Returns BOOL, takes a DWORD.
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HandlerRoutine = WINFUNCTYPE(wintypes.BOOL, wintypes.DWORD)
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def _ctrl_handler(sig):
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"""Handle a sig event and return 0 to terminate the process"""
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if sig == signal.CTRL_C_EVENT:
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pass
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elif sig == signal.CTRL_BREAK_EVENT:
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pass
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else:
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print("UNKNOWN EVENT")
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return 0
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ctrl_handler = HandlerRoutine(_ctrl_handler)
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SetConsoleCtrlHandler = ctypes.windll.kernel32.SetConsoleCtrlHandler
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SetConsoleCtrlHandler.argtypes = (HandlerRoutine, wintypes.BOOL)
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SetConsoleCtrlHandler.restype = wintypes.BOOL
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if __name__ == "__main__":
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# Add our console control handling function with value 1
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if not SetConsoleCtrlHandler(ctrl_handler, 1):
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print("Unable to add SetConsoleCtrlHandler")
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exit(-1)
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# Awaken mail process
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m = mmap.mmap(-1, 1, sys.argv[1])
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m[0] = '1'
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# Do nothing but wait for the signal
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while True:
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pass
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