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69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
#pragma once
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#include "acl_cpp/acl_cpp_define.hpp"
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#include <list>
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#include "acl_cpp/db/db_handle.hpp"
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#include "acl_cpp/connpool/connect_pool.hpp"
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namespace acl {
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class db_handle;
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class locker;
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class ACL_CPP_API db_pool : public connect_pool
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{
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public:
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/**
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* 数据库构造函数
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* @param dbaddr {const char*} 数据库地址
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* @param count {size_t} 连接池最大连接个数限制
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* @param idx {size_t} 该连接池对象在集合中的下标位置(从 0 开始)
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*/
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db_pool(const char* dbaddr, size_t count, size_t idx = 0);
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virtual ~db_pool() {};
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/**
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* 从数据库连接池获得一个数据库对象，并且要求打开数据库连接，即用户不必
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* 显式地再调用 db_handle::open 过程；
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* 用完后必须调用 db_pool->put(db_handle*) 将连接归还至数据库连接池，
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* 由该函数获得的连接句柄不能 delete，否则会造成连接池的内部计数器出错
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* @return {db_handle*} 数据库连接对象，返回空表示出错
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*/
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db_handle* peek_open();
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/**
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* 获得当前数据库连接池的最大连接数限制
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* @return {size_t}
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*/
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size_t get_dblimit() const
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{
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return get_max();
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}
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/**
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* 获得当前数据库连接池当前的连接数
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* @return {size_t}
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*/
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size_t get_dbcount() const
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{
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return get_count();
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}
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/**
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* 设置数据库连接池中空闲连接的生存周期(秒)
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* @param ttl {int} 生存周期(秒)
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*/
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void set_idle(int ttl)
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{
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set_idle_ttl(ttl);
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}
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};
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class ACL_CPP_API db_guard : public connect_guard
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{
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public:
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db_guard(db_pool& pool) : connect_guard(pool) {}
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~db_guard(void);
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};
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} // namespace acl
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