121 lines
2.5 KiB
C++
121 lines
2.5 KiB
C++
#pragma once
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#include <vector>
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#include <string>
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#define DATA_FIRST_LINE_SIZE (16) //第一行记录当前文件实际长度
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//////////////////////////////////////////////////////////////////////////
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// char acSeq[10];
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// char acTime[12];
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// unsigned char cIndex; // 0或1
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// unsigned char acTxRx; // 0:send, 1:recv
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// char acID[10];
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// unsigned char acFrame;//0:data, 1:remote
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// unsigned char acType; //0:standard, 1:extend
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// unsigned char cDlc;
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// char acData[32];
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#define DATA_FILE_SIZE (89*10000) //单个文件字节数
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class CEX_QUEUE_FILE_ITEM
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{
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public:
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CEX_QUEUE_FILE_ITEM()
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{
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lFileSize = DATA_FIRST_LINE_SIZE;
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lBeindIndex = 0;
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lEndIndex = 0;
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hFile = INVALID_HANDLE_VALUE;
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hMapFile = NULL;
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pBuf = NULL;
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}
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~CEX_QUEUE_FILE_ITEM()
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{
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if (NULL != pBuf)
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{
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FlushViewOfFile(pBuf, lFileSize);
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UnmapViewOfFile(pBuf);
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}
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if (NULL != hMapFile)
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{
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CloseHandle(hMapFile);
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}
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if (INVALID_HANDLE_VALUE != hFile)
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{
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CloseHandle(hFile);
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}
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}
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std::string strFileName;
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HANDLE hFile;//文件句柄
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HANDLE hMapFile;//文件映射对象
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void* pBuf;//文件内容
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int lFileSize;//当前文件字节数，包含文件首行的摘要信息（文件实际有效长度）
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int lBeindIndex;//当前文件第一个数据在所有数据中的序号
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int lEndIndex;//当前文件最后一个数据在所有数据中的序号
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};
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class CEXMemFileQueue
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{
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class ThreadLock {
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public:
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// 构造函数：初始化锁
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ThreadLock(CRITICAL_SECTION* cs)
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{
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m_cs = cs;
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EnterCriticalSection(m_cs);
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}
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~ThreadLock()
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{
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LeaveCriticalSection(m_cs);
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}
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private:
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CRITICAL_SECTION* m_cs; // 临界区对象
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};
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public:
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CEXMemFileQueue(std::string strDataDir);
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~CEXMemFileQueue();
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//读取一条数据，长度固定为DATA_LINE_SIZE
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int ReadItem(void* pData, int lIndex = -1);
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//写入一条数据，长度固定位DATA_LINE_SIZE
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int WriteItem(void* pData);
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//强制刷新内存数据到文件中
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void FlushWriteFile();
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//获取当前消息总条数
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int GetItemCount();
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int GetAutoSn();
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//切换当前日期
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void ChangeDataDate(SYSTEMTIME stDate);
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//获取有数据的日期列表
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std::vector<std::string> GetDataList();
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//自动清理历史数据，lRecvDay为保留的天数
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void AutoCleanData(int lRecvDay);
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private:
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//数据分文件存储
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std::vector<CEX_QUEUE_FILE_ITEM*> m_vecFile;
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//当前正在写入的文件节点
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CEX_QUEUE_FILE_ITEM* m_pWriteFileItem;
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//当前正在读取的文件节点
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CEX_QUEUE_FILE_ITEM* m_pReadFileItem;
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int m_lReadIndex;//当前读取索引值
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int m_lItemCount;//当前总数据条数
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std::string m_strBaseDir;//数据文件路径
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std::string m_strDataDir;//数据文件路径
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CRITICAL_SECTION m_cs;
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int m_lAutoSn;
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SYSTEMTIME m_stDataDate;
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};
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