Re: process / thread stack

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THX a lot:)

On Tue, Mar 4, 2008 at 11:51 PM, Rajat Jain <Rajat.Jain@xxxxxxxxxxxx> wrote:
>
>
>
> Yes.
>
>  ________________________________
>  From: kernelnewbies-bounce@xxxxxxxxxxxx on behalf of Wu Yu
> Sent: Tue 04-Mar-08 8:30 PM
> To: Mauricio Mauad Menegaz Filho
> Cc: Vijay Chauhan; kernelnewbies@xxxxxxxxxxxx
> Subject: Re: process / thread stack
>
>
>
>
>
> So, if threads share the same address space, does it mean that they
> share the code and data segment and their stacks are in the same
> address space just locate at different linear address?
>
> On Tue, Mar 4, 2008 at 10:28 PM, Mauricio Mauad Menegaz Filho
> <mmauad@xxxxxxxxx> wrote:
> >
> >
> > 2008/3/4, Vijay Chauhan <kernel.vijay@xxxxxxxxx>:
> >
> > >
> > > Hi,
> > >
> > > In Linux_Kernel_Development book it is mentioned that:
> > >
> > > A process consists of one or more threads of execution.
> > > Each thread includes a unique program counter, process stack, and set of
> > processor registers.
> > > So all the threads of a process share the same stack??
> >
> > No. Each thread has  a uniuque stack (as your statement already says).
> > Anyway, they share the same address space, meaning that all the threads
> > spawned by a particular process will _see_ the same address space (the
> > parent's address space). On Linux, a thread is a process indeed: for the
> > scheduler there is no difference at all. Although threads maintains its
> own
> > state, stack, registers, and program counter, the signal handlers, open
> file
> > descriptors, and pending alarms are shared among  the parent process and
> its
> > threads.
> >
> >
> > Mauad
> >
> >
>
>
>
> --
> Wu Yu
>
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>



-- 
Wu Yu

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