def check_locks(self, path, lock_suffix):
"""
Check if there are active locks ending with ``lock_suffix`` in ``path``.
If the process owning the lock doesn't exist anymore this will remove
the lock.
Args:
path (str): full path to lock directory
lock_suffix (str): last part of locks name
Returns:
bool: ``True`` if there are active locks in ``path``
"""
for f in os.listdir(path):
if not f[-len(lock_suffix):] == lock_suffix:
continue
is_tmp = os.path.basename(f)[-len(lock_suffix)-len('.tmp'):-len(lock_suffix)] == '.tmp'
if is_tmp:
lock_pid = os.path.basename(f)[:-len('.tmp')-len(lock_suffix)]
else:
lock_pid = os.path.basename(f)[:-len(lock_suffix)]
if lock_pid == self.pid:
if is_tmp == self.tmp_mount:
continue
if tools.is_process_alive(int(lock_pid)):
return True
else:
logger.debug('Remove old and invalid lock %s'
%f, self)
#clean up
os.remove(os.path.join(path, f))
for symlink in os.listdir(self.mount_root):
if symlink.endswith('_%s' % lock_pid):
os.remove(os.path.join(self.mount_root, symlink))
return False
def update_info( self ):
if not tools.is_process_alive( self.ppid ):
self.prepare_exit()
self.qapp.exit(0)
return
message = self.snapshots.get_take_snapshot_message()
if message is None and self.last_message is None:
message = ( 0, _('Working...') )
if not message is None:
if message != self.last_message:
self.last_message = message
self.menuStatusMessage.setText('\n'.join(tools.wrap_line(self.last_message[1],\
size = 80,\
delimiters = '',\
new_line_indicator = '') \
))
self.status_icon.setToolTip( self.last_message[1] )
pg = progress.ProgressFile(self.config)
if pg.isFileReadable():
pg.load()
percent = pg.get_int_value('percent')
if percent != self.progressBar.value():
self.progressBar.setValue(percent)
self.progressBar.render(self.pixmap, sourceRegion = QRegion(0, -14, 24, 6), flags = QWidget.RenderFlags(QWidget.DrawChildren))
self.status_icon.setIcon(QIcon(self.pixmap))
self.menuProgress.setText(' | '.join(self.getMenuProgress(pg)) )
self.menuProgress.setVisible(True)
else:
self.status_icon.setIcon(self.icon.BIT_LOGO)
self.menuProgress.setVisible(False)
def test_is_process_alive(self):
"""
Test the function is_process_alive
"""
#TODO: add test (in chroot) running proc as root and kill as non-root
self.assertTrue(tools.is_process_alive(os.getpid()))
pid = self.createProcess()
self.assertTrue(tools.is_process_alive(pid))
self.killProcess()
self.assertFalse(tools.is_process_alive(pid))
self.assertFalse(tools.is_process_alive(999999))
with self.assertRaises(ValueError):
tools.is_process_alive(0)
self.assertFalse(tools.is_process_alive(-1))
def check(self, auto_exit=False):
"""
Check if the current application is already running
Args:
auto_exit (bool): automatically call sys.exit if there is an other
instance running
Returns:
bool: True if this is the only application instance
"""
# check if the pidfile exists
if not os.path.isfile(self.pid_file):
return True
self.pid, self.procname = self.readPidFile()
# check if the process with specified by pid exists
if 0 == self.pid:
return True
if not tools.is_process_alive(self.pid):
return True
# check if the process has the same procname
# check cmdline for backwards compatibility
if (
self.procname
and self.procname != tools.process_name(self.pid)
and self.procname != tools.process_cmdline(self.pid)
):
return True
if auto_exit:
# exit the application
print("The application is already running !")
exit(0) # exit raise an exception so don't put it in a try/except block
return False
def update_info(self):
if not tools.is_process_alive(self.ppid):
self.prepare_exit()
self.qapp.exit(0)
return
message = self.snapshots.get_take_snapshot_message()
if message is None and self.last_message is None:
message = (0, _('Working...'))
if not message is None:
if message != self.last_message:
self.last_message = message
self.menuStatusMessage.setText('\n'.join(tools.wrap_line(self.last_message[1],\
size = 80,\
delimiters = '',\
new_line_indicator = '') \
))
self.status_icon.setToolTip(self.last_message[1])
pg = progress.ProgressFile(self.config)
if pg.isFileReadable():
pg.load()
percent = pg.get_int_value('percent')
if percent != self.progressBar.value():
self.progressBar.setValue(percent)
self.progressBar.render(self.pixmap,
sourceRegion=QRegion(0, -14, 24, 6),
flags=QWidget.RenderFlags(
QWidget.DrawChildren))
self.status_icon.setIcon(QIcon(self.pixmap))
self.menuProgress.setText(' | '.join(self.getMenuProgress(pg)))
self.menuProgress.setVisible(True)
else:
self.status_icon.setIcon(self.icon.BIT_LOGO)
self.menuProgress.setVisible(False)
def test_is_process_alive(self):
"""
Test the function is_process_alive
"""
self.assertTrue(tools.is_process_alive(0))
self.assertFalse(tools.is_process_alive(99999999999))
def test_is_process_alive(self):
"""
Test the function is_process_alive
"""
self.assertTrue(tools.is_process_alive(0))
self.assertFalse(tools.is_process_alive(99999999999))
