diff options
Diffstat (limited to 'src/Nerve_GIC/include')
| -rw-r--r-- | src/Nerve_GIC/include/gudhi/GIC.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/Nerve_GIC/include/gudhi/GIC.h b/src/Nerve_GIC/include/gudhi/GIC.h index 05c6a386..ebe463dd 100644 --- a/src/Nerve_GIC/include/gudhi/GIC.h +++ b/src/Nerve_GIC/include/gudhi/GIC.h @@ -142,6 +142,9 @@ class Cover_complex { std::string point_cloud_name; std::string color_name; + // 2 threads using 2 different GIC will have their own random engine + std::default_random_engine re; + // Remove all edges of a graph. void remove_edges(Graph& G) { boost::graph_traits<Graph>::edge_iterator ei, ei_end; @@ -150,8 +153,7 @@ class Cover_complex { // Find random number in [0,1]. double GetUniform() { - thread_local std::default_random_engine re; - thread_local std::uniform_real_distribution<double> Dist(0, 1); + std::uniform_real_distribution<double> Dist(0, 1); return Dist(re); } @@ -422,7 +424,9 @@ class Cover_complex { if (distances.size() == 0) compute_pairwise_distances(distance); - #ifdef GUDHI_USE_TBB + // This cannot be parallelized if thread_local is not defined + // thread_local is not defined for XCode < v.8 + #if defined(GUDHI_USE_TBB) && defined(GUDHI_CAN_USE_CXX11_THREAD_LOCAL) tbb::mutex deltamutex; tbb::parallel_for(0, N, [&](int i){ std::vector<int> samples(m); |