Created
November 1, 2015 00:10
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| # -*- coding: utf-8 -*- | |
| import threading | |
| from collections import deque | |
| import functools | |
| import traceback | |
| MAX_THREADS = 8 | |
| class ThreadPool(object): | |
| _lock = threading.Lock() | |
| _threads = set() | |
| _waiting_threads = deque() | |
| @classmethod | |
| def run(cls, target, *args, **kwargs): | |
| def start_thread(): | |
| with cls._lock: | |
| if len(cls._threads) < MAX_THREADS and len(cls._waiting_threads): | |
| thread = cls._waiting_threads.popleft() | |
| cls._threads.add(thread) | |
| thread.start() | |
| @functools.wraps(target) | |
| def runner(*args, **kwargs): | |
| try: | |
| target(*args, **kwargs) | |
| except: | |
| traceback.print_exc() | |
| with lock: | |
| cls._threads.remove(threading.current_thread()) | |
| start_thread() | |
| new_thread = threading.Thread(target=runner, name=target.__name__, | |
| args=args, kwargs=kwargs) | |
| with cls._lock: | |
| cls._waiting_threads.append(new_thread) | |
| start_thread() |
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