def _fork_and_submit_job(self, job):
parent_pipe, child_pipe = Pipe()
try:
p = Process(target=self._submit_job_to_lsf,
args=(child_pipe, parent_pipe, job,))
p.start()
except:
parent_pipe.close()
raise
finally:
child_pipe.close()
try:
p.join()
result = parent_pipe.recv()
if isinstance(result, basestring):
raise SubmitError(result)
except EOFError:
raise SubmitError('Unknown exception submitting job')
finally:
parent_pipe.close()
return result
class MessageConsole(textconsole.SimpleConsole):
'''
a message console for MAVProxy
'''
def __init__(self, title='MAVProxy: console'):
if platform.system() == 'Darwin':
forking_enable(False)
textconsole.SimpleConsole.__init__(self)
self.title = title
self.menu_callback = None
self.parent_pipe_recv, self.child_pipe_send = Pipe(duplex=False)
self.child_pipe_recv, self.parent_pipe_send = Pipe(duplex=False)
self.close_event = Event()
self.close_event.clear()
self.child = Process(target=self.child_task)
self.child.start()
self.child_pipe_send.close()
self.child_pipe_recv.close()
t = threading.Thread(target=self.watch_thread)
t.daemon = True
t.start()
def child_task(self):
'''child process - this holds all the GUI elements'''
self.parent_pipe_send.close()
self.parent_pipe_recv.close()
import wx_processguard
from wx_loader import wx
from wxconsole_ui import ConsoleFrame
app = wx.App(False)
app.frame = ConsoleFrame(state=self, title=self.title)
app.frame.SetDoubleBuffered(True)
app.frame.Show()
app.MainLoop()
def watch_thread(self):
'''watch for menu events from child'''
from mp_settings import MPSetting
try:
while True:
msg = self.parent_pipe_recv.recv()
if self.menu_callback is not None:
self.menu_callback(msg)
time.sleep(0.1)
except EOFError:
pass
def write(self, text, fg='black', bg='white'):
'''write to the console'''
try:
self.parent_pipe_send.send(Text(text, fg, bg))
except Exception:
pass
def set_status(self, name, text='', row=0, fg='black', bg='white'):
'''set a status value'''
if self.is_alive():
self.parent_pipe_send.send(Value(name, text, row, fg, bg))
def set_menu(self, menu, callback):
if self.is_alive():
self.parent_pipe_send.send(menu)
self.menu_callback = callback
def close(self):
'''close the console'''
self.close_event.set()
if self.is_alive():
self.child.join(2)
def is_alive(self):
'''check if child is still going'''
return self.child.is_alive()