1 files changed, 87 insertions, 0 deletions
diff --git a/runtimes/libs/misc/include/misc/benchmark.h b/runtimes/libs/misc/include/misc/benchmark.h
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+++ b/runtimes/libs/misc/include/misc/benchmark.h
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+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file benchmark.h
+ * @ingroup COM_AI_RUNTIME
+ * @brief This file contains nnfw::misc::benchmark::Accumulator class
+ */
+#ifndef __NNFW_MISC_BENCHMARK_H__
+#define __NNFW_MISC_BENCHMARK_H__
+
+#include <chrono>
+
+namespace nnfw
+{
+namespace misc
+{
+// Benckmark support
+namespace benchmark
+{
+
+/**
+ * @brief Class to accumulate time during benchmark
+ */
+template <typename T> class Accumulator
+{
+public:
+  /**
+   * @brief Construct a new Accumulator object
+   * @param[in] ref   Object to keep time duration
+   */
+  Accumulator(T &ref) : _ref(ref)
+  {
+    // DO NOTHING
+  }
+
+public:
+  /**
+   * @brief Return the reference of @c ref passed to constructor
+   * @return Reference of @c ref
+   */
+  T &operator()(void) { return _ref; }
+
+private:
+  T &_ref;
+};
+
+/**
+ * @brief Run passed function and returns accumulated time
+ * @tparam T            Period used by @c std::chrono::duration_cast
+ * @tparam Callable     Function type to benchmark
+ * @param[in] acc       Accumulated time after running @cb
+ * @param[in] cb        Function to run and benchmark
+ * @return Accumulated time
+ */
+template <typename T, typename Callable>
+Accumulator<T> &operator<<(Accumulator<T> &&acc, Callable cb)
+{
+  auto begin = std::chrono::steady_clock::now();
+  cb();
+  auto end = std::chrono::steady_clock::now();
+
+  acc() += std::chrono::duration_cast<T>(end - begin);
+
+  return acc;
+}
+
+template <typename T> Accumulator<T> measure(T &out) { return Accumulator<T>(out); }
+
+} // namespace benchmark
+} // namespace misc
+} // namespace nnfw
+
+#endif // __NNFW_MISC_BENCHMARK_H__