def shutdown(self):
"""Sends terminatory signals to the wrapped component, and shut down the componentWrapper.
will warn if the shutdown took too long to confirm in action."""
# TODO - what if the wrapped component has no control box?
if self.alive:
self.put(Ipc.shutdown(), "control") # legacy support.
self.put(Ipc.producerFinished(), "control") # some components only honour this one
self.put(Ipc.shutdownMicroprocess(), "control") # should be last, this is what we honour
else:
raise AttributeError("shutdown was previously called, or we were never activated.")
self.inputComponent.isDead.wait(1)
if not self.inputComponent.isDead.isSet(): # we timed out instead of someone else setting the flag
warnings.warn("Timed out waiting on shutdown confirmation, may not be dead.")
self.alive = False
