python多线程下信号处理程序示例

#!/usr/bin/env python#encoding: utf-8#filename: signal_demo.py import threading, signal  def do_job(i, step): global exited idx = i while not exited:  if(idx < 10000000):   print 'thread[%d]: idx=%d' % (i, idx)   idx = idx + step  else:   break if exited:  print 'receive a signal to exit, thread[%d] stop.' % i else:  print 'thread[%d] complete.' % i def sig_handler(sig, frame): global exited exited = True print 'receive a signal %d, exited=%d' % (sig, exited) def main(): #set signal handler signal.signal(signal.SIGTERM, sig_handler) signal.signal(signal.SIGINT, sig_handler) pool = [] pool_size = 50 for i in range(pool_size):  t = threading.Thread(target = do_job, args = (i, pool_size))  t.setDaemon(True)  pool.append(t)  t.start() while 1:  alive = False  for i in range(pool_size):   alive = alive or pool[i].isAlive()   if alive == True:    break  if not alive:   break if __name__ == '__main__': exited = False main()

python signal_demo.py