Lines Matching refs:_popen

79         if p._popen.poll() is not None:
102         self._popen = None
120         assert self._popen is None, 'cannot start a process twice'
130         self._popen = Popen(self)
140         self._popen.terminate()
147         assert self._popen is not None, 'can only join a started process'
148         res = self._popen.wait(timeout)
160         if self._popen is None:
163         returncode = self._popen.poll()
191         assert self._popen is None, 'process has already started'
210         if self._popen is None:
211             return self._popen
212         return self._popen.poll()
222             return self._popen and self._popen.pid
231         elif self._popen is None:
234             if self._popen.poll() is not None:
315         self._popen = None