def background_worker_pool(self):
if self._background_worker_pool is None: # Initialize lazily.
self._background_worker_pool = WorkerPool(
parent_workunit=self.get_background_root_workunit(),
run_tracker=self,
num_workers=self._num_background_workers)
return self._background_worker_pool
def foreground_worker_pool(self):
if self._foreground_worker_pool is None: # Initialize lazily.
self._foreground_worker_pool = WorkerPool(
parent_workunit=self._main_root_workunit,
run_tracker=self,
num_workers=self._num_foreground_workers)
return self._foreground_worker_pool