_pssunos.py 文件源码

def terminal(self):
        procfs_path = self._procfs_path
        hit_enoent = False
        tty = wrap_exceptions(
            cext.proc_basic_info(self.pid, self._procfs_path)[0])
        if tty != cext.PRNODEV:
            for x in (0, 1, 2, 255):
                try:
                    return os.readlink(
                        '%s/%d/path/%d' % (procfs_path, self.pid, x))
                except OSError as err:
                    if err.errno == errno.ENOENT:
                        hit_enoent = True
                        continue
                    raise
        if hit_enoent:
            # raise NSP if the process disappeared on us
            os.stat('%s/%s' % (procfs_path, self.pid))