diff options
| -rw-r--r-- | src/Nerve_GIC/include/gudhi/GIC.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/Nerve_GIC/include/gudhi/GIC.h b/src/Nerve_GIC/include/gudhi/GIC.h index ebe463dd..7aa95210 100644 --- a/src/Nerve_GIC/include/gudhi/GIC.h +++ b/src/Nerve_GIC/include/gudhi/GIC.h @@ -142,17 +142,25 @@ 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; for (boost::tie(ei, ei_end) = boost::edges(G); ei != ei_end; ++ei) boost::remove_edge(*ei, G); } + // Thread local is not available on XCode version < V.8 + // If not available, random engine is a class member. +#ifndef GUDHI_CAN_USE_CXX11_THREAD_LOCAL + std::default_random_engine re; +#endif // GUDHI_CAN_USE_CXX11_THREAD_LOCAL + // Find random number in [0,1]. double GetUniform() { + // Thread local is not available on XCode version < V.8 + // If available, random engine is defined for each thread. +#ifdef GUDHI_CAN_USE_CXX11_THREAD_LOCAL + thread_local std::default_random_engine re; +#endif // GUDHI_CAN_USE_CXX11_THREAD_LOCAL std::uniform_real_distribution<double> Dist(0, 1); return Dist(re); } |