--- /dev/null
+#ifndef IRIS_UTILS_H_
+#define IRIS_UTILS_H_
+#include <sys/time.h>
+
+#include <cstddef>
+namespace iris{
+
+long long get_current_time_in_us();
+
+
+int round_up_to_next_multiple_of_2(int n);
+
+/* utilitis for making sequence for tuple element retrieval */
+template<size_t ...> struct seq {};
+template<size_t idx, std::size_t N, std::size_t... S> struct seq_helper: seq_helper<idx + 1, N, S..., idx> {};
+template<size_t N, size_t ...S> struct seq_helper<N, N, S...> {
+ typedef seq<S...> type;
+};
+template<size_t N>
+struct make_sequence {
+ typedef typename seq_helper<0, N>::type type;
+};
+
+
+}
+#endif
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