include/ditto/multiprocessing.h

// Copyright (C) 2023 The Android Open Source Project
//
// 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.

#pragma once

#include <ditto/instruction.h>
#include <ditto/multithreading_utils.h>

#include <array>

#include <pthread.h>

namespace dittosuite {

class Multiprocessing : public Instruction {
 public:
  inline static const std::string kName = "multiprocessing";

  explicit Multiprocessing(const Params& params,
                           std::vector<std::unique_ptr<Instruction>> instructions,
                           std::vector<MultithreadingParams> thread_params);
  std::unique_ptr<Result> CollectResults(const std::string& prefix) override;

 private:
  void SetUpSingle() override;
  void RunSingle() override;
  void TearDownSingle(bool is_last) override;

  std::vector<std::unique_ptr<Instruction>> instructions_;
  std::vector<MultithreadingParams> thread_params_;
  std::vector<std::array<int, 2>> pipe_fds_;
  unsigned int instruction_id_;
  pthread_barrier_t* barrier_execution_;
  pthread_barrier_t* barrier_execution_end_;
  pthread_mutex_t* initialization_mutex_;
  bool is_manager_;
};

}  // namespace dittosuite