_utils.py 文件源码

def set_inheritable(fd, inheritable):
            flags = fcntl.fcntl(fd, fcntl.F_GETFD)
            if inheritable:
                flags &= ~fcntl.FD_CLOEXEC
            else:
                flags |= fcntl.FD_CLOEXEC
            fcntl.fcntl(fd, fcntl.F_SETFD, flags)