calibre-web/vendor/tornado/platform/windows.py

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# NOTE: win32 support is currently experimental, and not recommended
# for production use.
from __future__ import absolute_import, division, print_function, with_statement
import ctypes
import ctypes.wintypes
# See: http://msdn.microsoft.com/en-us/library/ms724935(VS.85).aspx
SetHandleInformation = ctypes.windll.kernel32.SetHandleInformation
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):
success = SetHandleInformation(fd, HANDLE_FLAG_INHERIT, 0)
if not success:
raise ctypes.GetLastError()