Messages in this thread | | | Date | Fri, 15 Jun 2018 13:50:17 -0400 (EDT) | From | Mathieu Desnoyers <> | Subject | Re: Restartable Sequences system call merged into Linux |
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----- On Jun 15, 2018, at 1:09 AM, Florian Weimer fweimer@redhat.com wrote:
> On 06/14/2018 03:01 PM, Mathieu Desnoyers wrote: >> Another alternative would be to somehow let glibc handle the registration, >> perhaps only doing it for applications expressing their interest for rseq. > > That's not really possible. We can't rely on the visibility of symbol > bindings due to lazy binding and hidden visibility. Registration of > intent by other means will not work because if it is done from user > code, some other library may have already launched a thread at this point. > > (It's also a moot point if we want to use restartable sequences in glibc > itself.)
Considering that we can expect the glibc memory allocator to benefit from rseq to speed up its memory allocator, this means pretty much any application linked against glibc *will* end up using rseq indirectly.
Thanks,
Mathieu
-- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com
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