int main() { Rtree<int> rt; Rec<int> a(1,3); Rec<int> b(2,5); Rec<int> c(5,9); Rec<int> d(8,2); Rec<int> e(11,1); Rec<int> f(4,6); Rec<int> g(3,4); Rec<int> h(6,6); Rec<int> i(9,3); Rec<int> j(6,1); Rec<int> k(10,2); Rec<int> l(2,9); Rec<int> n(3,8); rt.insert(a); rt.insert(b); rt.insert(c); rt.insert(d); rt.insert(e); rt.insert(f); rt.insert(g); rt.insert(h); rt.insert(i); rt.insert(j); rt.insert(k); rt.insert(l); //rt.insert(n); rt.print(); return 0; }
//For parent process argc == 1, for child process argc > 1 int main(int argc, char *argv[]) { using namespace boost::interprocess; namespace bg = boost::geometry; namespace bgm = bg::model; namespace bgi = bg::index; typedef bgm::point<float, 2, bg::cs::cartesian> P; typedef bgm::box<P> B; typedef bgi::linear<32, 8> Par; typedef bgi::indexable<B> I; typedef bgi::equal_to<B> E; typedef allocator<B, managed_shared_memory::segment_manager> Alloc; typedef bgi::rtree<B, Par, I, E, Alloc> Rtree; //Parent process if ( argc == 1 ) { struct shm_remove { shm_remove() { shared_memory_object::remove("MySharedMemory"); } ~shm_remove(){ shared_memory_object::remove("MySharedMemory"); } } remover; managed_shared_memory segment(create_only, "MySharedMemory", 65536); std::cout << "Parent: Constructing container\n"; Rtree * tree = segment.construct<Rtree>("Rtree")(Par(), I(), E(), Alloc(segment.get_segment_manager())); std::cout << "Parent: Filling container with 100 boxes\n"; for ( float i = 0 ; i < 100 ; i += 1 ) tree->insert(B(P(i, i), P(i+0.5f, i+0.5f))); std::cout << "Parent: Tree content\n"; Rtree::bounds_type bb = tree->bounds(); std::cout << "[(" << bg::get<0>(bb.min_corner()) << ", " << bg::get<1>(bb.min_corner()) << ")(" << bg::get<0>(bb.max_corner()) << ", " << bg::get<1>(bb.max_corner()) << ")]\n"; std::cout << "Parent: Running child process\n"; std::string s(argv[0]); s += " child "; if ( 0 != std::system(s.c_str()) ) return 1; if ( segment.find<Rtree>("Rtree").first ) return 1; std::cout << "Parent: Container was properly destroyed by the child process\n"; } //Child process else { managed_shared_memory segment(open_only, "MySharedMemory"); std::cout << "Child: Searching of the container in shared memory\n"; Rtree * tree = segment.find<Rtree>("Rtree").first; std::cout << "Child: Querying for objects intersecting box = [(45, 45)(55, 55)]\n"; std::vector<B> result; unsigned k = tree->query(bgi::intersects(B(P(45, 45), P(55, 55))), std::back_inserter(result)); std::cout << "Child: Found objects:\n"; std::cout << k << "\n"; BOOST_FOREACH(B const& b, result) { std::cout << "[(" << bg::get<0>(b.min_corner()) << ", " << bg::get<1>(b.min_corner()) << ")(" << bg::get<0>(b.max_corner()) << ", " << bg::get<1>(b.max_corner()) << ")]\n"; } std::cout << "\n"; std::cout << "Child: Destroying container\n"; segment.destroy<Rtree>("Rtree"); }