CGAL users discussion list

[Cody Rose <>]

Hello,

Can nef polygons be used with Microsoft's PPL? The following code (CGAL 
3.8) crashes during construction of either nef_polygon, even with 
CGAL_HAS_THREADS defined:

#include <cstdio>
#include <ppl.h>
#include <concurrent_vector.h>
#include <CGAL/Extended_cartesian.h>
#include <CGAL/CORE_Expr.h>
#include <CGAL/Nef_polyhedron_2.h>

typedef CORE::Expr NT;
typedef CGAL::Extended_cartesian<NT> K;
typedef CGAL::Nef_polyhedron_2<K> nef_polygon;

int main() {
    Concurrency::parallel_invoke(([]() { nef_polygon p; }), ([]() { 
nef_polygon q; }));
    printf("success\n");
    return 0;
}

If this doesn't work, are nef polygons otherwise concurrency-safe? (i.e. 
should using them with boost::thread, for example, work?)

Cody