forking.py 文件源码

def main():
        '''
        Run code specifed by data received over pipe
        '''
        assert is_forking(sys.argv)

        handle = int(sys.argv[-1])
        fd = msvcrt.open_osfhandle(handle, os.O_RDONLY)
        from_parent = os.fdopen(fd, 'rb')

        process.current_process()._inheriting = True
        preparation_data = load(from_parent)
        prepare(preparation_data)
        self = load(from_parent)
        process.current_process()._inheriting = False

        from_parent.close()

        exitcode = self._bootstrap()
        exit(exitcode)