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* clean up io, introduce utils * add support for multi-label classifcation datasets. rename data generator,
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| import asyncio | ||
| import functools | ||
| import threading | ||
|
|
||
| def watchdog(afunc): | ||
| """Stops all tasks if there is an error""" | ||
| @functools.wraps(afunc) | ||
| async def run(*args, **kwargs): | ||
| try: | ||
| await afunc(*args, **kwargs) | ||
| except asyncio.CancelledError: | ||
| return | ||
| except Exception as err: | ||
| print(f'exception {err}') | ||
| asyncio.get_event_loop().stop() | ||
| return run | ||
|
|
||
|
|
||
| def get_or_create_eventloop(): | ||
| try: | ||
| return asyncio.get_event_loop() | ||
| except RuntimeError as ex: | ||
| if "There is no current event loop in thread" in str(ex): | ||
| loop = asyncio.new_event_loop() | ||
| asyncio.set_event_loop(loop) | ||
| return asyncio.get_event_loop() | ||
|
|
||
|
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| class RunThread(threading.Thread): | ||
| def __init__(self, func, args, kwargs): | ||
| self.func = func | ||
| self.args = args | ||
| self.kwargs = kwargs | ||
| super().__init__() | ||
|
|
||
| def run(self): | ||
| self.result = asyncio.run(self.func(*self.args, **self.kwargs)) | ||
|
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||
|
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| def run_async(func, *args, **kwargs): | ||
| """async wrapper to detect if asyncio loop is already running | ||
| This is useful when already running in async thread. | ||
| """ | ||
| try: | ||
| loop = get_or_create_eventloop() | ||
| except RuntimeError: | ||
| loop = None | ||
| if loop and loop.is_running(): | ||
| thread = RunThread(func, args, kwargs) | ||
| thread.start() | ||
| thread.join() | ||
| return thread.result | ||
| else: | ||
| return asyncio.run(func(*args, **kwargs)) |