概述
原理:建立一个任务队列,然多个线程都从这个任务队列中取出任务然后执行,当然任务队列要加锁,详细请看代码
import threading import time import signal import os class task_info(object): def __init__(self): self.func = None self.parm0 = None self.parm1 = None self.parm2 = None class task_list(object): def __init__(self): self.tl = [] self.mutex = threading.Lock() self.sem = threading.Semaphore(0) def append(self,ti): self.mutex.acquire() self.tl.append(ti) self.mutex.release() self.sem.release() def fetch(self): self.sem.acquire() self.mutex.acquire() ti = self.tl.pop(0) self.mutex.release() return ti class thrd(threading.Thread): def __init__(self,tl): threading.Thread.__init__(self) self.tl = tl def run(self): while True: tsk = self.tl.fetch() tsk.func(tsk.parm0,tsk.parm1,tsk.parm2) class thrd_pool(object): def __init__(self,thd_count,tl): self.thds = [] for i in range(thd_count): self.thds.append(thrd(tl)) def run(self): for thd in self.thds: thd.start() def func(parm0=None,parm1=None,parm2=None): print 'count:%s,thrd_name:%s'%(str(parm0),threading.currentThread().getName()) def cleanup(signo,stkframe): print ('Oops! Got signal %s',signo) os._exit(0) if __name__ == '__main__': signal.signal(signal.SIGINT,cleanup) signal.signal(signal.SIGQUIT,cleanup) signal.signal(signal.SIGTERM,cleanup) tl = task_list() tp = thrd_pool(6,tl) tp.run() count = 0 while True: ti = task_info() ti.parm0 = count ti.func = func tl.append(ti) count += 1 time.sleep(2) pass
总结
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