Python实现线程池代码分享

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