99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
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/*************************************************************************
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> File Name : CMysqlPool.h
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> Author : liuzhao
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> EMail : liuzhao@comleader.com.cn
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> Created Time : Fri 17 Jul 2020 09:40:09 AM CST
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************************************************************************/
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#ifndef MYSQLPOOL_H
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#define MYSQLPOOL_H
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#include<iostream>
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#include<mysql/mysql.h>
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#include<queue>
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#include<map>
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#include<vector>
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#include<utility>
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#include<string>
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#include<mutex>
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#include<thread>
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#include "CJudgeUtils.h"
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struct MysqlResults
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{
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int field_count;
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int record_count;
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std::vector<std::vector<std::string>> value;
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std::vector<std::string> field_name;
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MysqlResults() : field_count(0), record_count(0) {}
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void Print()
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{
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std::cout << "[field_count:" << field_count << "]" << std::endl;
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std::cout << "[record_count:" << record_count << "]" << std::endl;
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int i = 0;
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std::cout << "[field]" << "\t";
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for (auto v : field_name)
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{
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std::cout << v << "\t";
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}
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std::cout << std::endl;
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for (auto v : value)
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{
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int j = 0;
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std::cout << "[row:" << i << "]" << "\t";
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for (auto x : v)
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{
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std::cout << x << "\t";
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j++;
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}
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std::cout << std::endl;
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i ++;
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}
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}
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};
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class MysqlPool : public CSingleton<MysqlPool>
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{
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public:
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MysqlPool();
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virtual ~MysqlPool();
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public:
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void executeSql(MysqlResults& results, const char* sql);//sql语句的执行函数
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void setParameter( const char* _mysqlhost,
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const char* _mysqluser,
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const char* _mysqlpwd,
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const char* _databasename,
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unsigned int _port = 0,
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const char* _socket = NULL,
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unsigned long _client_flag = 0,
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unsigned int MAX_CONNECT = 50 ); //设置数据库参数
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private:
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MYSQL* createOneConnect(); //创建一个新的连接对象
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MYSQL* getOneConnect(); //获取一个连接对象
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void close(MYSQL* conn); //关闭连接对象
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bool isEmpty(); //连接池队列池是否为空
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MYSQL* poolFront(); //连接池队列的队头
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unsigned int poolSize(); //获取连接池的大小
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void poolPop(); //弹出连接池队列的队头
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private:
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std::queue<MYSQL*> mysqlpool; //连接池队列
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const char* _mysqlhost; //mysql主机地址
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const char* _mysqluser; //mysql用户名
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const char* _mysqlpwd; //mysql密码
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const char* _databasename; //要使用的mysql数据库名字
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unsigned int _port; //mysql端口
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const char* _socket; //可以设置成Socket or Pipeline，通常设置为NULL
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unsigned long _client_flag; //设置为0
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unsigned int MAX_CONNECT; //同时允许最大连接对象数量
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unsigned int connect_count; //目前连接池的连接对象数量
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static std::mutex objectlock; //对象锁
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static std::mutex poollock; //连接池锁
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static MysqlPool* mysqlpool_object; //类的对象
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};
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#endif
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