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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