CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 03/26/2015 09:06 PM, John DiMatteo wrote:
> Hello,
>
> Are there .pdb files available for GMP and MPFR precompiled libs that
> are installed as part of CGAL-4.5.2-Setup.exe ?  I am not very familiar
> with these libraries, but it seems non-trivial to build them on Windows.
>
> I'm working on testing some multithreading code using CGAL, and when I
> run Intel Inspector to check for data races, I found data races in
> _gmp_get_memory_functions, _gmpq_init, _gmpz_set, and and mpfr_set_q.
> Without symbols, it is difficult for me to determine if the data race is
> caused by my incorrect usage of CGAL or a bug in these libraries.
>
> Thanks,
> John
The number type Gmpq and the Kernel 
Exact_kernel_exact_constructions_kernel that is using it
are not thread-safe.

Could you try updating CGAL/Exact_predicates_exact_constructions_kernel.h
to replace typedef internal::Exact_field_selector<double>::Type Epeck_ft;

by
typedef ::mpq_class Epeck_ft

to see if it solves the issue?

Thanks,

Sebastien.