60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
/* Copyright 2020 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.
|
|
==============================================================================*/
|
|
|
|
// Reference implementation of timer functions. Platforms are not required to
|
|
// implement these timer methods, but they are required to enable profiling.
|
|
|
|
// On platforms that have a POSIX stack or C library, it can be written using
|
|
// methods from <sys/time.h> or clock() from <time.h>.
|
|
|
|
// To add an equivalent function for your own platform, create your own
|
|
// implementation file, and place it in a subfolder with named after the OS
|
|
// you're targeting. For example, see the Cortex M bare metal version in
|
|
// tensorflow/lite/micro/bluepill/micro_time.cc or the mbed one on
|
|
// tensorflow/lite/micro/mbed/micro_time.cc.
|
|
|
|
#include "tensorflow/lite/micro/micro_time.h"
|
|
|
|
#if defined(TF_LITE_USE_CTIME)
|
|
#include <ctime>
|
|
#endif
|
|
|
|
namespace tflite {
|
|
|
|
#if !defined(TF_LITE_USE_CTIME)
|
|
|
|
// Reference implementation of the ticks_per_second() function that's required
|
|
// for a platform to support Tensorflow Lite for Microcontrollers profiling.
|
|
// This returns 0 by default because timing is an optional feature that builds
|
|
// without errors on platforms that do not need it.
|
|
int32_t ticks_per_second() { return 0; }
|
|
|
|
// Reference implementation of the GetCurrentTimeTicks() function that's
|
|
// required for a platform to support Tensorflow Lite for Microcontrollers
|
|
// profiling. This returns 0 by default because timing is an optional feature
|
|
// that builds without errors on platforms that do not need it.
|
|
int32_t GetCurrentTimeTicks() { return 0; }
|
|
|
|
#else // defined(TF_LITE_USE_CTIME)
|
|
|
|
// For platforms that support ctime, we implment the micro_time interface in
|
|
// this central location.
|
|
int32_t ticks_per_second() { return CLOCKS_PER_SEC; }
|
|
|
|
int32_t GetCurrentTimeTicks() { return clock(); }
|
|
#endif
|
|
|
|
} // namespace tflite
|