4764bf2986
Step 1 of re-namespace'ing StreamExecutor into ::stream_executor. This moves everything inside of stream_executor/..., and leaves a namespace alias into ::perftools::gputools. The next steps will clean up users to use the new namespace. This is mostly a mechanical change, but it also includes a bunch of non-mechanical changes that ideally would be split out into separate patches. Unfortunately they all sort of need to be shoved in here for various reasons: - forward declarations need to be in the same namespace as the actual types, so we need to change all forward declarations of StreamExecutor types in this one patch. - Uses of these forward declarations need to be changed to the new namespace (or otherwise we need to add a namespace alias to the relevant header, but this is pretty ugly). - Various initialization code needs to live in StreamExecutor's "real" namespace, so all this needs to be changed. PiperOrigin-RevId: 193256128
62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
/* Copyright 2016 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.
|
|
==============================================================================*/
|
|
|
|
#ifndef TENSORFLOW_STREAM_EXECUTOR_HOST_HOST_TIMER_H_
|
|
#define TENSORFLOW_STREAM_EXECUTOR_HOST_HOST_TIMER_H_
|
|
|
|
#include <chrono>
|
|
|
|
#include "tensorflow/stream_executor/stream_executor_internal.h"
|
|
|
|
namespace stream_executor {
|
|
namespace host {
|
|
|
|
class HostTimer : public internal::TimerInterface {
|
|
public:
|
|
HostTimer() {}
|
|
~HostTimer() override {}
|
|
|
|
// Begins the timer at the present point in the stream.
|
|
bool Start(Stream *stream);
|
|
|
|
// Stops the timer at the present point in the stream.
|
|
bool Stop(Stream *stream);
|
|
|
|
// Returns the most recent value recorded for a start/stopcycle, in
|
|
// microseconds.
|
|
uint64 Microseconds() const override;
|
|
|
|
// Returns the most recent value recorded for a start/stopcycle, in
|
|
// nanoseconds.
|
|
uint64 Nanoseconds() const override;
|
|
|
|
private:
|
|
using clock = std::chrono::high_resolution_clock;
|
|
|
|
clock::time_point start_time_;
|
|
clock::duration duration_;
|
|
|
|
// Actually starts (rather than enqueues starting) the timer.
|
|
void StartNow();
|
|
|
|
// Actually stops (rather than enqueues stopping) the timer.
|
|
void StopNow();
|
|
};
|
|
|
|
} // namespace host
|
|
} // namespace stream_executor
|
|
|
|
#endif // TENSORFLOW_STREAM_EXECUTOR_HOST_HOST_TIMER_H_
|