# NOTE: win32 support is currently experimental, and not recommended
# for production use.
import ctypes
import ctypes.wintypes
# See: http://msdn.microsoft.com/en-us/library/ms724935(VS.85).aspx
SetHandleInformation = ctypes.windll.kernel32.SetHandleInformation # type: ignore
SetHandleInformation.argtypes = (
ctypes.wintypes.HANDLE,
ctypes.wintypes.DWORD,
ctypes.wintypes.DWORD,
)
SetHandleInformation.restype = ctypes.wintypes.BOOL
HANDLE_FLAG_INHERIT = 0x00000001
def set_close_exec(fd: int) -> None:
success = SetHandleInformation(fd, HANDLE_FLAG_INHERIT, 0)
if not success:
raise ctypes.WinError() # type: ignore
