Re: pthreads and memory allocation

[anton wilson <anton.wilson@xxxxxxxxxxxx>]

That makes sense. Also interesting is the fact that creating a 
non-detached thread causes an 8 Meg stack:

40061000     8188K rwxp 00001000 00:00  [ anon ]

Where is the decision of the stack size made? In the linuxthreads 
library or in the kernel? I have yet to find that code in the kernel
and do not understand why an 8 Meg stack would be created when using 
non-detached threads.

Thanks,

Anton



patrick mcmanus wrote:

> On Fri, 2004-08-27 at 17:10, anton wilson wrote:
>  
>
> > in OUTPUT1. When pthread_create is used, several unexplained memory 
> >    
> [..]
>  
>
> > one is 4k (non-writable) and the other is 2044K (both mapped to the zero 
> >    
>
> I don't recall what all of the allocations are for, but the 2MB is the
> stack for your new thread. See pthread_attr_setstackaddr() and
> pthread_attr_setstacksize() for controlling it a bit.
>
> -Pat
>
>
>
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