Adding missing files

src/Vector/cuda/vector_dist_operators_list_ker.hpp

+/*
+ * vector_dist_operators_list_ker.hpp
+ *
+ *  Created on: Jun 7, 2019
+ *      Author: i-bird
+ */
+
+#ifndef VECTOR_DIST_OPERATORS_LIST_KER_HPP_
+#define VECTOR_DIST_OPERATORS_LIST_KER_HPP_
+
+template<typename T>
+struct ref_wrap
+{
+	T & v;
+
+	ref_wrap(T & v)
+	:v(v)
+	{}
+
+	ref_wrap & operator=(const ref_wrap<T> & rw)
+	{
+		v = rw.v;
+		return *this;
+	}
+};
+
+/*! \brief This class contain a list of all tracked vector_dist_ker around.
+ *
+ * In short suppose to do a auto vdk = vd.toKernel() vdk wrap the cuda pointer of vd. On the other hand
+ * if in vd we use instruction that produce reallocations vdk contain invalid pointers. this class contail a
+ * list of all vector_dist_kernel, such that if a reallocation happen the pointer are updated on the vector_dist_kernel
+ *
+ */
+template<typename vector_dist_ker_type>
+class vector_dist_ker_list
+{
+	openfpm::vector<ref_wrap<vector_dist_ker_type>> vkers;
+
+public:
+
+	/*! \brief Add a new vector_dist_kernel to track
+	 *
+	 * \param v vector_dist_kernel to track
+	 *
+	 *
+	 */
+	void add(vector_dist_ker_type & v)
+	{
+		ref_wrap<vector_dist_ker_type> rw(v);
+
+		vkers.add(rw);
+
+		if (vkers.size() >= 64)
+		{
+			std::cout << __FILE__ << ":" << __LINE__ << " The array of tracked vector_dist_ker become suspiciously big, are there memory leak ? " << std::endl;
+		}
+	}
+
+	/*! \brief Update the addresses of all vector_dist_kernels around
+	 *
+	 * \param v vector_dist_kernel to track
+	 *
+	 *
+	 */
+	void update(const vector_dist_ker_type & v)
+	{
+		for (size_t i = 0 ; i < vkers.size() ; i++)
+		{
+			vkers.get(i).v = v;
+		}
+	}
+
+	/*! \brief Remove one vector_dist_kernels entry
+	 *
+	 * \param v vector_dist_kernel to remove
+	 *
+	 *
+	 */
+	void remove(vector_dist_ker_type & v)
+	{
+		for (size_t i = 0 ; i < vkers.size() ; i++)
+		{
+			if (&vkers.get(i).v == &v)
+			{
+				vkers.remove(i);
+				break;
+			}
+		}
+	}
+
+	/*! \brief Return the number of entries
+	 *
+	 * \return the number of entries
+	 *
+	 */
+	size_t n_entry()
+	{
+		return vkers.size();
+	}
+
+	/*! \brief Check that all the entries are aligned to the latest vector_dist_ker_type
+	 *
+	 * \return true if all entries are alligned
+	 *
+	 */
+	bool check(const vector_dist_ker_type & v)
+	{
+		for (size_t i = 0 ; i < vkers.size() ; i++)
+		{
+			if (!(vkers.get(i).v == v))
+			{
+				return false;
+			}
+		}
+
+		return true;
+	}
+};
+
+#endif /* VECTOR_DIST_OPERATORS_LIST_KER_HPP_ */