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Protect a counter shared by all threads using atomic

This commit is contained in:
Andreas Fabri 2016-09-06 11:18:22 +02:00
parent 099b98da01
commit 0695aa3fcd
1 changed files with 4 additions and 1 deletions
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5
Nef_3/include/CGAL/Nef_3/SNC_indexed_items.h
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@ -22,6 +22,7 @@
#define CGAL_NEF_SNC_INDEXED_ITEMS_H #define CGAL_NEF_SNC_INDEXED_ITEMS_H
#include <CGAL/tss.h> #include <CGAL/tss.h>
#include <CGAL/atomic.h>
#include <CGAL/Nef_3/Vertex.h> #include <CGAL/Nef_3/Vertex.h>
#include <CGAL/Nef_3/Halfedge.h> #include <CGAL/Nef_3/Halfedge.h>
@ -42,7 +43,9 @@ class Index_generator {
public: public:
static int get_unique_index() static int get_unique_index()
{ {
CGAL_STATIC_THREAD_LOCAL_VARIABLE(int, unique, 0); // initialized with 0
// http://en.cppreference.com/w/cpp/language/zero_initialization
static CGAL::cpp11::atomic<int> unique;
return unique++; return unique++;
} }
}; };