On Aug 13, 11:09 am, "守株待兔" <1248283...@qq.com> wrote: > please see my code: > import os > import threading > print threading.currentThread() > print "i am parent ",os.getpid() > ret = os.fork() > print "i am here",os.getpid() > print threading.currentThread() > if ret == 0: > print threading.currentThread() > else: > os.wait() > print threading.currentThread() > > print "i am runing,who am i? ",os.getpid(),threading.currentThread() > > the output is: > <_MainThread(MainThread, started -1216477504)> > i am parent 13495 > i am here 13495 > <_MainThread(MainThread, started -1216477504)> > i am here 13496 > <_MainThread(MainThread, started -1216477504)> > <_MainThread(MainThread, started -1216477504)> > i am runing,who am i? 13496 <_MainThread(MainThread, started -1216477504)> > <_MainThread(MainThread, started -1216477504)> > i am runing,who am i? 13495 <_MainThread(MainThread, started -1216477504)> > it is so strange that two different processes use one mainthread!!
You should not mix thread and fork. Some hint : You put your "import threading" before your fork(), then data initialized by the import are the same in the two process then it display the same, this is like a=-1216477504 os.fork() print a second I thing -1216477504 has no meaning, this is not a system thread ID but just an ID generated by python I think they must be unique inside a process but not cross process. Then 2 process can have the same python thread ID. If you have to mix thread and fork try to find some hints from Internet. Something like don't fork a process that already has tread(), or try to keep all your threads inside the same process ... Regards -- http://mail.python.org/mailman/listinfo/python-list
