win32_support.py 文件源码

def fcntl(fd, op, arg=0):
    if op == F_GETFD or op == F_GETFL:
        return 0
    elif op == F_SETFD:
        # Check that the flag is CLOEXEC and translate
        if arg == FD_CLOEXEC:
            success = SetHandleInformation(fd, HANDLE_FLAG_INHERIT, arg)
            if not success:
                raise ctypes.GetLastError()
        else:
            raise ValueError("Unsupported arg")
    #elif op == F_SETFL:
        ## Check that the flag is NONBLOCK and translate
        #if arg == os.O_NONBLOCK:
            ##pass
            #result = ioctlsocket(fd, FIONBIO, 1)
            #if result != 0:
                #raise ctypes.GetLastError()
        #else:
            #raise ValueError("Unsupported arg")
    else:
        raise ValueError("Unsupported op")