| |
|
|
| import time |
| import traceback |
|
|
| from threading import Thread, Lock |
|
|
|
|
| class _TaskRunner: |
| def __init__(self, runner_name="default"): |
| self.runner_name = str(runner_name or "default") |
| self.thread_name = self.runner_name.replace("_", " ").strip().title() or "Default" |
| self.task_queue = [] |
| self.lock = Lock() |
| self.thread = None |
|
|
| def _process_tasks(self): |
| while True: |
| task = None |
| with self.lock: |
| if self.task_queue: |
| task = self.task_queue.pop(0) |
| |
| if task is None: |
| time.sleep(0.001) |
| continue |
| |
| func, args, kwargs, thread_name = task |
| current_name = None |
| thread = self.thread |
| try: |
| if thread_name and thread is not None: |
| current_name = thread.name |
| thread.name = thread_name |
| func(*args, **kwargs) |
| except Exception as e: |
| tb = traceback.format_exc().split('\n')[:-1] |
| print('\n'.join(tb)) |
|
|
| |
| finally: |
| if current_name is not None and thread is not None: |
| thread.name = current_name |
|
|
| def add_task(self, func, *args, thread_name=None, **kwargs): |
| with self.lock: |
| self.task_queue.append((func, args, kwargs, thread_name)) |
| thread = None if self.thread is not None else Thread(target=self._process_tasks, daemon=True, name=self.thread_name) |
| if thread is not None: |
| self.thread = thread |
|
|
| if thread is not None: |
| thread.start() |
|
|
|
|
| class Listener: |
| runners = {} |
| lock = Lock() |
|
|
| @classmethod |
| def _get_runner(cls, runner_name="default"): |
| runner_name = str(runner_name or "default") |
| with cls.lock: |
| runner = cls.runners.get(runner_name, None) |
| if runner is None: |
| runner = _TaskRunner(runner_name) |
| cls.runners[runner_name] = runner |
| return runner |
|
|
| @classmethod |
| def add_task(cls, func, *args, runner_name="default", thread_name=None, **kwargs): |
| cls._get_runner(runner_name).add_task(func, *args, thread_name=thread_name, **kwargs) |
|
|
|
|
| def async_run(func, *args, thread_name=None, **kwargs): |
| Listener.add_task(func, *args, thread_name=thread_name, **kwargs) |
|
|
|
|
| def async_run_in(runner_name, func, *args, thread_name=None, **kwargs): |
| Listener.add_task(func, *args, runner_name=runner_name, thread_name=thread_name, **kwargs) |
|
|
|
|
| class FIFOQueue: |
| def __init__(self): |
| self.queue = [] |
| self.lock = Lock() |
|
|
| def push(self, cmd, data = None): |
| with self.lock: |
| self.queue.append( (cmd, data) ) |
|
|
| def pop(self): |
| with self.lock: |
| if self.queue: |
| return self.queue.pop(0) |
| return None |
|
|
| def top(self): |
| with self.lock: |
| if self.queue: |
| return self.queue[0] |
| return None |
|
|
| def next(self): |
| while True: |
| with self.lock: |
| if self.queue: |
| return self.queue.pop(0) |
|
|
| time.sleep(0.001) |
|
|
|
|
| class AsyncStream: |
| def __init__(self): |
| self.input_queue = FIFOQueue() |
| self.output_queue = FIFOQueue() |
|
|
