1 files changed, 55 insertions, 0 deletions
diff --git a/libs/profiling/src/profiling/time.cpp b/libs/profiling/src/profiling/time.cpp
new file mode 100644
index 000000000..92d8595f8
--- /dev/null
+++ b/libs/profiling/src/profiling/time.cpp
@@ -0,0 +1,55 @@
+/* Copyright 2018 The TensorFlow Authors. 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.
+==============================================================================*/
+
+// NOTE To minimize diff with upstream tensorflow, disable clang-format
+// clang-format off
+
+// NOTE This header is derived from the following file (in TensorFlow v1.12)
+//        'externals/tensorflow/tensorflow/contrib/lite/profiling/time.cpp
+#include "profiling/time.h"
+
+#if defined(_MSC_VER)
+#include <chrono>  // NOLINT(build/c++11)
+#else
+#include <sys/time.h>
+#endif
+
+namespace tflite {
+namespace profiling {
+namespace time {
+
+#if defined(_MSC_VER)
+
+uint64_t NowMicros() {
+  return std::chrono::duration_cast<std::chrono::microseconds>(
+             std::chrono::system_clock::now().time_since_epoch())
+      .count();
+}
+
+#else
+
+uint64_t NowMicros() {
+  struct timeval tv;
+  gettimeofday(&tv, nullptr);
+  return static_cast<uint64_t>(tv.tv_sec) * 1000000 + tv.tv_usec;
+}
+
+#endif  // defined(_MSC_VER)
+
+}  // namespace time
+}  // namespace profiling
+}  // namespace tflite
+
+// clang-format on