49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
#encoding = utf8
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import asyncio
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import threading
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class AsyncTaskQueue:
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def __init__(self):
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self._queue = asyncio.Queue()
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self._loop = asyncio.new_event_loop()
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self._thread = threading.Thread(target=self._run_loop)
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self._worker_task = None
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self._loop_running = threading.Event()
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self._thread.start()
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def _run_loop(self):
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print('_run_loop')
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self._loop_running.set()
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asyncio.set_event_loop(self._loop)
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self._loop.run_forever()
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async def _worker(self):
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print('_worker')
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while self._loop_running.is_set():
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task = await self._queue.get()
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if task is None:
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break
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print('run task')
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await task
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self._queue.task_done()
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print('_worker finish')
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def add_task(self, coro):
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print('add_task')
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asyncio.run_coroutine_threadsafe(self._queue.put(coro), self._loop)
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def start_worker(self):
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if not self._worker_task:
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self._worker_task = asyncio.run_coroutine_threadsafe(self._worker(), self._loop)
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def stop(self):
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self._loop_running.clear()
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asyncio.run_coroutine_threadsafe(self._queue.put(None), self._loop).result()
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if self._worker_task:
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self._worker_task.result()
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self._loop.call_soon_threadsafe(self._loop.stop)
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self._thread.join()
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self._loop.close()
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