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gui/applets: prevent concurrent process start/stop

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This commit is contained in:
Sebastien Bourdeauducq 2016-02-11 16:25:44 +01:00
parent 92c0ede689
commit 29d4755567
1 changed files with 15 additions and 0 deletions
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15
artiq/gui/applets.py
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@ -95,11 +95,17 @@ class AppletDock(dockarea.Dock):
self.applet_name = name
self.command = command
self.starting_stopping = False
def rename(self, name):
self.applet_name = name
self.label.setText("Applet: " + name)
async def start(self):
if self.starting_stopping:
return
self.starting_stopping = True
self.ipc = AppletIPCServer(self.datasets_sub)
if "{ipc_address}" not in self.command:
logger.warning("IPC address missing from command for %s",
@ -114,6 +120,8 @@ class AppletDock(dockarea.Dock):
exc_info=True)
self.ipc.start(self.embed, self.fix_initial_size)
self.starting_stopping = False
def embed(self, win_id):
logger.debug("capturing window 0x%x for %s", win_id, self.applet_name)
self.embed_window = QtGui.QWindow.fromWinId(win_id)
@ -127,6 +135,10 @@ class AppletDock(dockarea.Dock):
self.embed_window.resize(self.embed_widget.size())
async def terminate(self):
if self.starting_stopping:
return
self.starting_stopping = True
if hasattr(self, "ipc"):
await self.ipc.stop()
self.ipc.write_pyon({"action": "terminate"})
@ -142,9 +154,12 @@ class AppletDock(dockarea.Dock):
await self.ipc.process.wait()
del self.ipc
if hasattr(self, "embed_widget"):
self.embed_widget.deleteLater()
del self.embed_widget
self.starting_stopping = False
async def restart(self):
await self.terminate()
await self.start()