Hmm....
I do not think so.
In user space, I have a fork test, but the result is that the parent and child process are in the same process group.
When you call fork to create a child process, you can use setpgid to specify the group id of the newly created child
process in both the parent process and the child process.
On Dec 29, 2008 5:27am, Frederic Weisbecker <fweisbec@xxxxxxxxx> wrote:
> On Mon, Dec 29, 2008 at 01:49:18AM +0530, Shyam Burkule wrote:
>
> > Hello,
>
> > I am sorry for asking silly question.
>
> >
>
> > In windows basic execution unit is thread, and Linux does not
>
> > differentiate between thread and process( I mean Linux doesn't give special
>
> > treatment for thread essentially they are normal process except they share
>
> > some resource with other process). If I use fork to create process, does
>
> > it create thread that run in the same thread group as parent run or does it
>
> > create another standalone process?
>
> >
>
> > Fork system call is equivalent to clone(SIGCHLD,0, so I think fork create
>
> > new standalone process.
>
> >
>
> > Please clarify.
>
> >
>
> > ~Shyam
>
>
>
>
>
> Hi Shyam,
>
>
>
> Actually, all is about tasks. For the kernel, process, thread, whatever, they are all tasks.
>
> When you create a process, you create a task (which is one thread).
>
> When you create a new secondary thread in this process, you create a new
>
> task too. We could perhaps consider it as a "subtask" but it has its own task_struct.
>
> Inside a same process, the threads belong to the same thread group.
>
>
>
> And when you create a new process (fork), you create a new task but not in the same thread group.
>
>
>
> Hmm?
>
>
>
>
>
> --
>
> To unsubscribe from this list: send an email with
>
> "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx
>
> Please read the FAQ at http://kernelnewbies.org/FAQ
>
>
>
