usingLocks.py

#!usr/bin/python

import threading
import time

#exitFlag = 0

class mythread(threading.Thread):
    
    def __init__(self, threadName, delay):
        
            self.threadName = threadName
            self.delay = delay
            threading.Thread.__init__(self)
            
    def run(self):
            
            print "starting:" + self.threadName
            ThreadLock.acquire()
            print_time(self.threadName, self.delay, 5)
            ThreadLock.release()
            #print "exiting " + self.name
            
def print_time(threadName, delay, counter):
    
    while counter:
        #if exitFlag:
        #    thread.exit()
        time.sleep(delay)
        print "%s %s" %(threadName, time.ctime(time.time()))
        counter-=1
        
        
ThreadLock = threading.Lock()
threads=[]

t_1 = mythread("thread-1", 2)
t_2 = mythread("thread-2", 2)

threads.append(t_1)
threads.append(t_2)

t_1.start()
t_2.start()

#while t_1.isAlive():
 #   if not t_2.isAlive():
  #      exitFlag = 1
   # pass
   
for t in threads:
    t.join()

print "exiting the main thread"