Re: [Help-glpk] Thread safety of GLPK

[David Monniaux]

I stumbled on the same problem as Mathieu: I wanted to run independent
GLPK computations (separate problem objects) in different threads (these
threads are started from OpenMP).

My solution was to modify one line in tls.c:

static _Thread_local void *tls = NULL;

This is standard C2011 and supported by recent compilers.

It seems older versions of gcc used __thread and Visual C++ supported
__declspec(thread), both of which are still respectively supported.

I was wondering whether some configure option could make its way into
glpk so as to activate thread-local storage for the main platforms,
since this seems a common request.

-- 
David Monniaux
Directeur de recherche au CNRS, laboratoire VERIMAG
http://www-verimag.imag.fr/~monniaux/