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Re: problem in thread creation
- From: Andrew Lunn <andrew at lunn dot ch>
- To: Aravind B <arvindb at cranessoftware dot com>
- Cc: ecos <ecos-discuss at sources dot redhat dot com>
- Date: Wed, 15 Sep 2004 12:39:03 +0200
- Subject: Re: [ECOS] problem in thread creation
- References: <1095242173.1018.14.camel@ambica>
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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