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a9e9a2c884
- DB Threading model update * Get rid of ThreadBundleMask and bundled connection * Implement configurable amount of Synch threads for databasepools * Use modulus based algorithm to check for free synchronous connections instead of previous ¨get connection by thread key or bundlemask¨ feature * Locks on mysql context objects are now managed outside the mysql query methods Fixes issue #4058 Fixes issue #4059 Introduces a ton of more issues. Use at own risk. You were warned. Really. Don´t forget to update your worldserver.conf --HG-- branch : trunk
85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
/*
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* Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <ace/Activation_Queue.h>
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#include "DatabaseWorkerPool.h"
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#ifndef _MYSQLCONNECTION_H
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#define _MYSQLCONNECTION_H
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class DatabaseWorker;
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class PreparedStatement;
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class MySQLPreparedStatement;
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class PingOperation;
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class MySQLConnection
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{
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template <class T> friend class DatabaseWorkerPool;
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friend class PingOperation;
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public:
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MySQLConnection(); //! Constructor for synchroneous connections.
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MySQLConnection(ACE_Activation_Queue* queue); //! Constructor for asynchroneous connections.
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~MySQLConnection();
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virtual bool Open(const std::string& infoString); //! Connection details.
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void Close();
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public:
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bool Execute(const char* sql);
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bool Execute(PreparedStatement* stmt);
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ResultSet* Query(const char* sql);
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PreparedResultSet* Query(PreparedStatement* stmt);
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bool _Query(const char *sql, MYSQL_RES **pResult, MYSQL_FIELD **pFields, uint64* pRowCount, uint32* pFieldCount);
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bool _Query(PreparedStatement* stmt, MYSQL_RES **pResult, MYSQL_FIELD **pFields, uint64* pRowCount, uint32* pFieldCount);
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void BeginTransaction();
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void RollbackTransaction();
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void CommitTransaction();
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operator bool () const { return m_Mysql != NULL; }
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void Ping() { mysql_ping(m_Mysql); }
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protected:
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MYSQL* GetHandle() { return m_Mysql; }
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MySQLPreparedStatement* GetPreparedStatement(uint32 index);
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void PrepareStatement(uint32 index, const char* sql);
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std::vector<MySQLPreparedStatement*> m_stmts; //! PreparedStatements storage
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bool LockIfReady()
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{
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/// Tries to acquire lock. If lock is acquired by another thread
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/// the calling parent will just try another connection
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return m_Mutex.tryacquire() != -1;
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}
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void Unlock()
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{
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/// Called by parent databasepool. Will let other threads access this connection
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m_Mutex.release();
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}
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private:
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ACE_Activation_Queue* m_queue; //! Queue shared with other asynchroneous connections.
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DatabaseWorker* m_worker; //! Core worker task.
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MYSQL * m_Mysql; //! MySQL Handle.
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ACE_Thread_Mutex m_Mutex;
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};
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#endif
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