[omniORB] How to kill an omni_thread ???

[Tristan Richardson]

"Andreas.Koehler" <koehler@vs.dasa.de> writes:

> using omniORB2 our pthread implementation should be substituted with
> omni_threads. One of the implemented functionality creates a pthread,
> waits for TIMEOUT seconds and will kill the pthread, if the pthread is
> still running after TIMEOUT seconds:
> 
>   pthread_t thr;
>   pthread_attr_t attr;
>   pthread_attr_init (&attr);
>   pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
>   if (pthread_create (&thr, &attr, <function_ptr>, <arg_ptr>)) {
>         perror ("thread creation failed");
>         kill (getpid (), SIGTERM); // terminating with implemented handler
>   }
>   ...
>   pthread_kill(thr, SIGINT);
> 
> Now we create an omni_thread with:
> 
>   omni_thread *thr;
>   thr = omni_thread::create(<function_ptr>, <arg_ptr>);
> 
> But what's the analogon to pthread_kill? Calling the destructor is not
> allowed!


There is intentionally no "thread kill" functionality in omnithread.  For
all but the most trivial of cases (i.e. if the thread ever locks a mutex),
it is just about impossible to kill a thread like this without introducing
errors into your program.  A thread should always be responsible for its own
destruction.  If from another thread you want to tell a thread to exit then
you do this using the normal synchronisation primitives, and the thread
itself exits at a point where it can do so cleanly.

Cheers

Tristan

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