43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
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#pragma once
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/**
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* @file item_data.h
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* @brief 查询ihd在一段时间的数据，最多1024个tag点
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* @author your name (you@domain.com)
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* @version 0.1
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* @date 2024-01-11
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*
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* Copyright: Baosight Co. Ltd.
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* DO NOT COPY/USE WITHOUT PERMISSION
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*
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*/
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#include <mix_cc/shm.h>
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namespace ItemShm {
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namespace SHM = mix_cc::shm;
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namespace bipc = mix_cc::shm::bip;
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const static std::string dir_path = "/users/dsc/shm";
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const static std::string shm_file = "ItemData"; ///<映射文件名
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const double data_size = 1024; ///< 数据大小 MB
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const int max_item_num = 1024; ///<最大数据个数
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static bipc::managed_mapped_file obj_mapped_file(
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bipc::open_or_create, (dir_path + "/" + shm_file + "_boost.mmap").c_str(),
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mix_cc::data_size::MB(data_size));
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typedef double ItemData[max_item_num]; ///<一个时间点上，所有item的数据值
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struct IhdTimeRecord {
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int stime; ///<查询的开始时间
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int etime; ///<查询的结束时间
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int data_size; ///<查询的数据长度
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};
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/*单例 vector item的数据，每个原始位一个时间戳的所有数据，最长1024个tag点*/
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const static bipc::offset_ptr<SHM::Vector<ItemData>> ItemDataPtr =
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SHM::VectorBuilder<ItemData>::find_or_construct(&obj_mapped_file, shm_file);
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/*单例 TimeRecord 保持 记录的起止时间*/
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const static bipc::offset_ptr<IhdTimeRecord> IhdTimeRecordPtr =
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obj_mapped_file.find_or_construct<IhdTimeRecord>("IhdTimeRecord")();
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} // namespace ItemShm
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