python-线程-临界区

import threading
import time


class Counter:
        def __init__(self):
                self.value=0
                self.lock = threading.Lock()
        def increment(self):
                self.lock.acquire()
                self.value=self.value+1
                value=self.value
                self.lock.release()
                return value


counter = Counter()


class ThreadDemo(threading.Thread):
        def __init__(self,index,create_time):
                threading.Thread.__init__(self)
                self.index = index
                self.create_time = create_time
        def run(self):
                time.sleep(1)
                value = counter.increment()
                print(time.time()-self.create_time),"\t",self.index,"\tvalue:",value
for index in range(100):
        thread = ThreadDemo(index,time.time())
        thread.start()