python threading
#!/usr/bin/env python
import thread
from time import sleep, ctime
def loop0():
print 'start loop 0 at:', ctime()
sleep(4)
print 'loop 0 done at:', ctime()
def loop1():
print 'start loop 1 at:', ctime()
sleep(2)
print 'loop 1 done at:', ctime()
def main():
print 'starting at:', ctime()
thread.start_new_thread(loop0, ())
thread.start_new_thread(loop1, ())
sleep(6)
print 'all DONE at:', ctime()
if __name__ == '__main__':
main()
################################################################
#!/usr/bin/env python
import thread
from time import sleep, ctime
loops = [4,2]
def loop(nloop, nsec, lock):
print 'start loop', nloop, 'at:', ctime()
sleep(nsec)
print 'loop', nloop, 'done at:', ctime()
lock.release()
def main():
print 'starting at:', ctime()
locks = []
nloops = range(len(loops))
for i in nloops:
lock = thread.allocate_lock()
lock.acquire()
locks.append(lock)
for i in nloops:
thread.start_new_thread(loop,
(i, loops[i], locks[i]))
for i in nloops:
while locks[i].locked(): pass
print 'all DONE at:', ctime()
if __name__ == '__main__':
main()
##################################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''创建一个 Thread 的实例，传给它一个函数'''
import threading
from time import sleep, ctime
loops = [4,2]
def loop(nloop, nsec):
print 'start loop', nloop, 'at:', ctime()
sleep(nsec)
print 'loop', nloop, 'done at:', ctime()
def main():
print 'starting at:', ctime()
threads = []
nloops = range(len(loops))
for i in nloops:
t = threading.Thread(target=loop,args=(i, loops[i]))
threads.append(t)
for i in nloops: # start threads
threads[i].start()
for i in nloops: # wait for all
threads[i].join() # threads to finish
print 'all DONE at:', ctime()
if __name__ == '__main__':
main()
##################################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''创建一个Thread 的实例，传给它一个可调用的类对象'''
import threading
from time import sleep, ctime
loops = [4,2]
class ThreadFunc(object):
def __init__(self, func, args, name=''):
self.name = name
self.func = func
self.args = args
def __call__(self):
apply(self.func, self.args) #self.res = self.func(*self.args)
def loop(nloop, nsec):
print 'start loop', nloop, 'at:', ctime()
sleep(nsec)
print 'loop', nloop, 'done at:', ctime()
def main():
print 'starting at:', ctime()
threads = []
nloops = range(len(loops))
for i in nloops: # create all threads
t = threading.Thread(target=ThreadFunc(loop, (i, loops[i]), loop.__name__))
threads.append(t)
for i in nloops: # start all threads
threads[i].start()
for i in nloops: # wait for completion
threads[i].join()
print 'all DONE at:', ctime()
if __name__ == '__main__':
main()
##############################################################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''从Thread 派生出一个子类，创建一个这个子类的实例'''
import threading
from time import sleep, ctime
loops = (4, 2)
class MyThread(threading.Thread):
def __init__(self, func, args, name=''):
threading.Thread.__init__(self)
self.name = name
self.func = func
self.args = args
def run(self):
apply(self.func, self.args)
def loop(nloop, nsec):
print 'start loop', nloop, 'at:', ctime()
sleep(nsec)
print 'loop', nloop, 'done at:', ctime()
def main():
print 'starting at:', ctime()
threads = []
nloops = range(len(loops))
for i in nloops:
t = MyThread(loop, (i, loops[i]), loop.__name__)
threads.append(t)
for i in nloops:
threads[i].start()
for i in nloops:
threads[i].join()
print 'all DONE at:', ctime()
if __name__ == '__main__':
main()
#######################################################################################################
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import threading
from time import ctime
class MyThread(threading.Thread):
def __init__(self, func, args, name=''):
threading.Thread.__init__(self)
self.name = name
self.func = func
self.args = args
def getResult(self):
return self.res
def run(self):
print 'starting', self.name, 'at:', ctime()
self.res = apply(self.func, self.args)
print self.name, 'finished at:', \
ctime()
________________________________________
#!/usr/bin/env python
# -*- coding: utf-8 -*-
''' getResult()'''
from myThread import MyThread
from time import ctime, sleep
def fib(x):
sleep(0.005)
if x < 2: return 1
return (fib(x-2) + fib(x-1))
def fac(x):
sleep(0.1)
if x < 2: return 1
return (x * fac(x-1))
def sum(x):
sleep(0.1)
if x < 2: return 1
return (x + sum(x-1))
funcs = [fib, fac, sum]
n = 12
def main():
nfuncs = range(len(funcs))
print '*** SINGLE THREAD'
for i in nfuncs:
print 'starting', funcs[i].__name__, 'at:', ctime()
print funcs[i](n)
print funcs[i].__name__, 'finished at:', ctime()
print '\n*** MULTIPLE THREADS'
threads = []
for i in nfuncs:
t = MyThread(funcs[i], (n,), funcs[i].__name__)
threads.append(t)
for i in nfuncs:
threads[i].start()
for i in nfuncs:
threads[i].join()
print threads[i].getResult()
print 'all DONE'
if __name__ == '__main__':
main()
###########################################################################