Date: Fri, 19 Dec 2008 21:39:20 -0800 From: Julian Elischer <julian@elischer.org> To: Ferner Cilloniz <fernercc@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: adding proc to allproc Message-ID: <494C8508.2020000@elischer.org> In-Reply-To: <1229729326.5614.16.camel@mobiliare.Belkin> References: <1229726360.5614.15.camel@mobiliare.Belkin> <494C8246.3020703@elischer.org> <1229729326.5614.16.camel@mobiliare.Belkin>
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Ferner Cilloniz wrote:
> When i run the code from a KLD it hangs the system. No reboot occurs
> however, it just hangs there.
well, firstly you have no locking though that would probably let you
get away with it most times.
Where does the process come from in the first place?
It sounds like you are making a circular list somewhere or somehow...
have you tried going into ddb?
>
>
> On Fri, 2008-12-19 at 21:27 -0800, Julian Elischer wrote:
>> Ferner Cilloniz wrote:
>>> Hello everyone.
>>>
>>> I am playing with freebsd and just learning some things about the
>>> FreeBSD kernel.
>>>
>>> So for my first quest i am placing random processes from the allproc
>>> list into a list of my own and trying to add them back into allproc
>>>
>>> I have pasted the code below.
>>>
>>> -----------------------------------------------------------------------
>>> struct proc *p = a process from my own list;
>>> if( p != NULL && (p->p_state == PRS_NEW || p->p_state == PRS_NORMAL) ){
>>> LIST_INSERT_HEAD(&allproc, p, p_list);
>>> }
>>> -----------------------------------------------------------------------
>>
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