Re: glibc THREAD_GSCOPE and excessive gsync_wake ()

[Samuel Thibault]

Samuel Thibault, le sam. 08 mai 2021 21:54:34 +0200, a ecrit:
> Don't bother looking at the existing implementation, its roots dates
> before we really had gsync working.
> 
> Sergey Bugaev, le sam. 08 mai 2021 22:35:23 +0300, a ecrit:
> > +  do \
> > +    { \
> > +      int count; \
> > +      count = atomic_exchange_and_add_rel (&GL(dl_thread_gscope_count), 
> > -1); \
> 
> While at it, rather try to reproduce the other archs' behavior: use
> gscope_flag from the tcb, and switch THREAD_GSCOPE_IN_TCB to 1. That
> will make the implementation much simpler and scalable.

And also drop THREAD_GSCOPE_GLOBAL, it's not useful any more.

Samuel