wehub-resource-sync
70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "tensorflow/lite/profiling/time.h"
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#if defined(_MSC_VER)
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#include <chrono> // NOLINT(build/c++11)
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#include <thread> // NOLINT(build/c++11)
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#else
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#include <sys/time.h>
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#include <time.h>
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#endif
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namespace tflite {
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namespace profiling {
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namespace time {
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#if defined(_MSC_VER)
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uint64_t NowMicros() {
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return static_cast<uint64_t>(
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std::chrono::duration_cast<std::chrono::microseconds>(
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std::chrono::steady_clock::now().time_since_epoch())
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.count());
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}
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void SleepForMicros(uint64_t micros) {
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std::this_thread::sleep_for(std::chrono::microseconds(micros));
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}
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#else
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uint64_t NowMicros() {
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#if defined(__APPLE__)
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// Prefer using CLOCK_MONOTONIC_RAW for measuring duration and latency on
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// macOS.
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return clock_gettime_nsec_np(CLOCK_MONOTONIC_RAW) / 1e3;
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#else
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return static_cast<uint64_t>(ts.tv_sec) * 1e6 +
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static_cast<uint64_t>(ts.tv_nsec) / 1e3;
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#endif // __APPLE__
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}
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void SleepForMicros(uint64_t micros) {
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timespec sleep_time;
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sleep_time.tv_sec = micros / 1e6;
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micros -= sleep_time.tv_sec * 1e6;
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sleep_time.tv_nsec = micros * 1e3;
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nanosleep(&sleep_time, nullptr);
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}
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#endif // defined(_MSC_VER)
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} // namespace time
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} // namespace profiling
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} // namespace tflite
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