On 4¤ë12¤é, ¤U¤È1®É45¤À, Paul Pluzhnikov <ppluzhnikov-...@charter.net>
wrote:
> lar...@gmail.com writes:
> > I found that on AIX, even if I called
> > pthread_join() on every threads, the are still there
>
> No you didn't.
>
> > At every point of the three fgetc() calls, using /usr/bin/ps or /usr/
> > sysv/bin/ps to watch VSZ, RSS and LWP,NLWP values, I get the
> > conclusion that after pthread_join(), some (but not all) threads are
> > still there, and resources(VSZ, RSS) allocted by pthread_create() are
> > not released.
>
> Your observed results are correct, but your conclusion is not.
>
> Resources allocated by pthread_create are not released (they are
> cached since you are likely to create more threads).
>
> But that doesn't mean the threads are "there". They are gone,
> turned into "available memory" in exactly the same way as memory is
> "gone" after you do:
>
> p = calloc(10000, 1);
> free(p);
>
> [BTW, unlike Linux and Solaris which use mmap() to "allocate"
> thread stack, AIX uses malloc() for the same.]
>
> Cheers,
> --
> In order to understand recursion you must first understand recursion.
> Remove /-nsp/ for email.

thank you very much! Now I recognized that on AIX it's not a 'leak',
thanks again :-)