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Re: problem in thread creation


On Wed, Sep 15, 2004 at 03:26:12PM +0530, Aravind B wrote:
> 
> 
> > Thanks for ur kind reply
> > After debugging i found that problem is in following code fragment in
> > file thread.cxx:
> > 
> >               Cyg_Thread::add_to_list( void )
> > -     127     {
> >       128         // Add thread to housekeeping list
> >       129         Cyg_Scheduler::lock();
> >       130     
> > -     131         if( thread_list == 0 )
> >       132             list_next = this;
> >       133         else {prev != thread_list
> >       134             Cyg_Thread *prev = thread_list;
> > -     135             do {
> > -     136                 if ( this == prev )
> >       137                     break; // found it already!
> > -     138                 prev = prev->list_next;
> > -     139             } while ( prev != thread_list );
> > -     140             if ( this != prev ) {
> >       141                 // insert it in the list:
> > -     142                 list_next = thread_list->list_next;
> > -     143                 thread_list->list_next = this;
> >       144             }
> >       145         }
> > 
> > the control is in the while loop forever as prev == thread_list ( line
> > 139 )ie prev has become NULL.
> 
> >Sounds like your stack is too small and you are overwriting the thread
> >structures.
> > Andrew
> But my stack size is 4096 bytes.

How do you know that is big enough?

        Andrew

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