topic is thread alive ? in Operating System - HP-UX

is thread alive ?

pthread — Tue, 18 Sep 2007 01:00:48 GMT

Hi,

Is there a API in pthread to get the state of the thread on hp-ux ?

State of the thread I meant by what time the thread started, whether the
thread still exists.

I could find pstat_getlwp but it would take lwpid as the argument ? any
alternatives of converting a pthread_t to lwp willalso help ..

regards

Shankar K E

Re: is thread alive ?

Dennis Handly — Tue, 18 Sep 2007 02:27:47 GMT

Same as kill, checks but doesn't kill it: pthread_kill(thread, 0);
http://docs.hp.com/en/B2355-60130/pthread_kill.3T.html

Re: is thread alive ?

pthread — Tue, 18 Sep 2007 02:32:27 GMT

Hi Dennis,

Thanks for the reply.

But if the pthread_id gets reused then I have to use the
start time of the thread, is there an API to do that in
the pthread library ?

Thanks

Shankar

Re: is thread alive ?

Dennis Handly — Tue, 18 Sep 2007 02:49:00 GMT

>But if the pthread_id gets reused then I have to use the start time of the thread, is there an API to do that in the pthread library?

In a simple case I tried, I didn't see any reuse of the thread id but I don't think that is guaranteed.

Re: is thread alive ?

pthread — Tue, 18 Sep 2007 03:17:09 GMT

So we have to need an API from pthread right ?

pstat_getlwp returns a very good piece of information, is there any in the same manner of pthread.

Re: is thread alive ?

Dennis Handly — Tue, 18 Sep 2007 04:08:46 GMT

>So we have to need an API from pthread right?

You need to remember all of the threads you created and make sure you remove the ones that die.