chromium/third_party/mediapipe/src/mediapipe/framework/scheduler_shared.h

// Copyright 2019 The MediaPipe Authors.
//
// 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 MEDIAPIPE_FRAMEWORK_SCHEDULER_SHARED_H_
#define MEDIAPIPE_FRAMEWORK_SCHEDULER_SHARED_H_

#include <atomic>
#include <cstdint>
#include <functional>
#include <memory>
#include <queue>
#include <utility>

#include "absl/base/macros.h"
#include "absl/synchronization/mutex.h"
#include "mediapipe/framework/deps/clock.h"
#include "mediapipe/framework/deps/monotonic_clock.h"
#include "mediapipe/framework/port/status.h"

namespace mediapipe {
namespace internal {

// This is meant for testing purposes only.
struct SchedulerTimes { … };

// This service class is used to compute the scheduler overhead.
// It keeps track of the total runtime of the graph, and of the total time
// spent actually running nodes. The difference is considered overhead.
// This is a crude measure that only makes sense when running with a single
// worker thread, but it has the advantage of being simple and continuing to
// work across the scheduler changes we want to test.
class SchedulerTimer { … };

struct SchedulerShared { … };

}  // namespace internal
}  // namespace mediapipe

#endif  // MEDIAPIPE_FRAMEWORK_SCHEDULER_SHARED_H_