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/* 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/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
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