Re: Multi-threading

[Nikos Mavrogiannopoulos <nmav@xxxxxxxxxx>]

On Wed, 2017-12-20 at 10:38 +0100, Andreas Schneider wrote:
> On Tuesday, 12 December 2017 01:25:58 CET Ахриев Альберт wrote:
> > Dear All, 
> > 
> > As a newcomer I am struggling to understand how to use libssh in
> > multithreaded environment. 
> > 
> > Very simple question: if application creates in each thread a
> > separate
> > instance of ssh session, which runs completely independently from
> > other
> > instances, is that enough to guarantee thread-safety? In other
> > words, are
> > the state variables of each session really independent?
> 
> No, that's not enough see:
> 
> http://api.libssh.org/master/libssh_tutor_threads.html

Ouch. Is that requirement for libssh or for its back-ends? Other
(crypto) libraries are using system threads transparently providing
callbacks exceptionally (or even not). Openssl, libgcrypt, gnutls as
such examples.

regards,
Nikos