forked from huawei/mindspore2022
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/**
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* Copyright 2020 Huawei Technologies Co., Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MINDSPORE_CCSRC_COMMON_THREAD_POOL_H_
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#define MINDSPORE_CCSRC_COMMON_THREAD_POOL_H_
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#include <mutex>
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#include <condition_variable>
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#include <thread>
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#include <vector>
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#include <queue>
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#include <string>
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#include <atomic>
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#include <memory>
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#include <utility>
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#include <functional>
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#include <iostream>
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#include "utils/log_adapter.h"
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namespace mindspore {
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const int kCoreThreadNum = 3;
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const int kDefaultMaxThreadNum = 8;
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enum Status { FAIL = -1, SUCCESS = 0 };
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using Task = std::function<int()>;
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class Queue {
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public:
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Queue() = default;
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~Queue() = default;
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bool Enqueue(Task *task);
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bool Dequeue(Task **out);
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std::atomic_int task_size_ = {0};
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private:
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std::atomic_int head_ = {0};
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std::atomic_int tail_ = {0};
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Task *buffer_[2]{};
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};
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class ThreadPool {
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public:
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~ThreadPool();
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ThreadPool(const ThreadPool &) = delete;
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ThreadPool &operator=(const ThreadPool &) = delete;
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static ThreadPool *GetInstance();
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// Use the tasks' size of threads to execute these tasks, one thread execute one task.
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bool LaunchMultipleTask(const std::vector<Task> &tasks);
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private:
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ThreadPool();
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bool SetThreadPool(int config_thread_num);
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void AddNewThread(int add_num);
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void AddRunThread(int num);
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void SubRunThread(int num);
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bool CheckResult();
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int cur_thread_nums_{0};
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int cur_thread_run_nums_{0};
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int core_thread_num_{kCoreThreadNum};
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int max_thread_num_{kDefaultMaxThreadNum};
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std::mutex pool_mtx_;
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std::mutex thread_mtx_;
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std::condition_variable queue_ready_;
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std::atomic_bool exit_run_ = {false};
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std::vector<std::atomic_bool *> activate_list_{};
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std::vector<std::thread> thread_list_{};
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std::vector<std::shared_ptr<Queue>> queue_list_{};
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std::vector<std::pair<int, std::pair<bool, int>>> error_info_{};
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};
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} // namespace mindspore
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#endif // MINDSPORE_CCSRC_COMMON_THREAD_POOL_H_
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