Python implements thread pool code sharing and python thread pool code

Python implements thread pool code sharing and python thread pool code

Principle: create a task queue. Multiple Threads extract the task from the task queue and execute it. Of course, the task queue needs to be locked. For details, see the code.

import threadingimport timeimport signalimport 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