def _shutdown(self):
# Shut down the hook invoker threads; they will finish any current
# work and then terminate. (The process will not exit until the invoker
# threads stop; they are not daemon threads.)
self._hooks.stop()
monitor = ProcessMonitor.get_instance()
monitor.observe("empty", self._subprocesses_all_exited)
# Stop any recording tasks that are in progress. Shutdown will continue
# when all recording subprocesses exit.
for key, session in self._manager.get_all_sessions():
try:
session.stop()
except RuntimeError:
pass
def _subprocesses_all_exited(self):
ProcessMonitor.get_instance().halt()
self.fire("shutdown")
