/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2023. 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 GPU_DATA_PLUGIN_H
#define GPU_DATA_PLUGIN_H

#include <dirent.h>
#include <fcntl.h>
#include <unistd.h>

#include <atomic>
#include <fstream>
#include <iostream>
#include <mutex>
#include <string>
#include <thread>
#include <vector>

#include "gpu_plugin_config.pb.h"
#include "gpu_plugin_result.pb.h"
#include "logging.h"
#include "plugin_module_api.h"

enum ErrorType {
    RET_NULL_ADDR = -2,
    RET_FAIL = -1,
    RET_SUCC = 0,
};

class GpuDataPlugin {
public:
    GpuDataPlugin() = default;
    ~GpuDataPlugin() = default;
    int Start(const uint8_t* configData, uint32_t configSize);
    int SetWriter(WriterStruct* writer);
    int Stop();
    void ReadGpuDataArray(void);
    void FlushGpuData(std::vector<std::pair<uint64_t, int>>& vectGpuData);
    void ReadGpuData(void);

private:
    int ReadFile();
    std::string GetCmdArgs(const GpuConfig& traceConfig);
    template <typename T>
    void WriteGpuDataInfoExt(T& gpuData, std::vector<std::pair<uint64_t, int>>& vectGpuData);
    template <typename T>
    void WriteGpuDataInfo(T& gpuData);
    uint64_t GetBootTime();

private:
    GpuConfig protoConfig_;
    int pid_ = -1;
    std::ifstream file_;
    WriterStruct* resultWriter_ = nullptr;
    std::thread writeThread_;
    std::atomic<bool> running_ = true;
    std::vector<char> buffer_;
};

#endif