chromium/third_party/mediapipe/src/mediapipe/framework/executor.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.

// Executor class for the MediaPipe scheduler.

#ifndef MEDIAPIPE_FRAMEWORK_EXECUTOR_H_
#define MEDIAPIPE_FRAMEWORK_EXECUTOR_H_

#include <functional>

// TODO: Move protos in another CL after the C++ code migration.
#include "mediapipe/framework/deps/registration.h"
#include "mediapipe/framework/mediapipe_options.pb.h"
#include "mediapipe/framework/port/statusor.h"

namespace mediapipe {

// Abstract base class for the task queue.
// NOTE: The task queue orders the ready tasks by their priorities. This
// enables the executor to run ready tasks in priority order.
class TaskQueue { … };

// Abstract base class for the Executor.
class Executor { … };

using ExecutorRegistry =
    GlobalFactoryRegistry<absl::StatusOr<Executor*>, const MediaPipeOptions&>;

// Macro for registering the executor.
#define REGISTER_EXECUTOR(name) …

}  // namespace mediapipe

#endif  // MEDIAPIPE_FRAMEWORK_EXECUTOR_H_