[dpdk-dev] [RFC v2] eal: simplify the implementation of rte_ctrl_thread_create

[Stephen Hemminger]

On Wed, 25 Aug 2021 15:23:08 +0000
Honnappa Nagarahalli <Honnappa.Nagarahalli at arm.com> wrote:

> <snip>
> 
> > 
> > On 2021-08-02 07:16, Honnappa Nagarahalli wrote:  
> > > The current described behaviour of rte_ctrl_thread_create is rigid
> > > which makes the implementation of the function complex.
> > > The behavior is abstracted to allow for simplified implementation.
> > >  
> > 
> > Have you considered using a POSIX condition variable instead of atomics for
> > synchronization?  
> No, I have not considered. The current implementation is complex because of the error handling of pthread_barrier_xxx APIs. I am thinking similar complexity will come in with the condition variable functions.
> 
> I am using atomic variable in this patch to synchronize which does not need much error handling which simplifies the implementation.
> 
> <snip>

The problem with condition variables is that it then adds a mutex
as well.