#-*- coding:utf-8 -*-
import os
import sys
import time
import thread
class Singleton(object):
def __new__(cls, *args, **kw):
if not hasattr(cls, '_instance'):
orig = super(Singleton, cls)
cls._instance = orig.__new__(cls, *args, **kw)
try:
method = getattr(cls._instance, "single_init")
method()
except Exception,e:
print "single_init is null"
return cls._instance
def done(request, response_head, res):
time.sleep(1)
res += "second"
request.ret(res)
class example(Singleton):
def single_init(self):
self.a = 1
print "init"
def test_alive(self, request, response_head):
return str(self.a)
res = "first "
thread.start_new_thread(done, (request, response_head, res))复制代码 |
