def instance(every=None):
global _instance
if not _instance:
if every:
_instance = Timer(every)
_instance.start()
print("Timers started to loop every", every, "s")
else:
raise ValueError("No timer set up.")
return _instance
if utils.get_platform() == "OS X":
mp.set_start_method('spawn', force=True)
if flags.viz == 1:
flags.num_processes = 1
tmp_label_path = os.path.join(flags.save_dir, 'tmp_labels.txt')
label_path = os.path.join(flags.save_dir, 'labels.txt')
manager = mp.Manager()
q = manager.Queue()
start_index = restore_exist_labels(label_path)
timer = Timer(Timer.SECOND)
timer.start()
with mp.Pool(processes=get_num_processes(flags)) as pool:
if not flags.viz:
pool.apply_async(start_listen, (q, tmp_label_path))
pool.starmap(
generate_img,
zip(range(start_index, start_index + flags.num_img), repeat(q)))
q.put(STOP_TOKEN)
pool.close()
pool.join()
timer.end("Finish generate data")
if not flags.viz:
sort_labels(tmp_label_path, label_path)
