def _check_available_space(self):
"""Check available space on device
If the available space is below threshold an alert will be
shown which suggests deleting old journal entries.
"""
if self._critical_space_alert:
return
stat = os.statvfs(env.get_profile_path())
free_space = stat[statvfs.F_BSIZE] * stat[statvfs.F_BAVAIL]
if free_space < (_SPACE_THRESHOLD * 1024 * 1024):
self._critical_space_alert = ModalAlert()
self._critical_space_alert.connect('destroy',
self.__alert_closed_cb)
self._critical_space_alert.show()
