57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================//
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#ifndef MYSQL_ASYNC_H
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#define MYSQL_ASYNC_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "tier0/fasttimer.h"
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class IMySQL;
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class CQueryResults
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{
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public:
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IMySQLRowSet *m_pResults;
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void *m_pUserData; // This is the value passed to Execute.
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CCycleCount m_ExecuteTime; // How long it took to execute this query in MySQL.
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CCycleCount m_QueueTime; // How long it spent in the queue.
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};
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// This provides a way to do asynchronous MySQL queries. They are executed in a thread,
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// then you can pop the results off as they arrive.
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class IMySQLAsync
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{
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public:
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virtual void Release() = 0;
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// After finishing the current query, if there is one, this immediately executes
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// the specified query and returns its results.
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virtual IMySQLRowSet* ExecuteBlocking( const char *pStr ) = 0;
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// Queue up a query.
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virtual void Execute( const char *pStr, void *pUserData ) = 0;
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// Poll this to pick up results from Execute().
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// NOTE: if this returns true, but pResults is set to NULL, then that query had an error.
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virtual bool GetNextResults( CQueryResults &results ) = 0;
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};
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// Create an async mysql interface. Note: if this call returns a non-null value,
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// then after this call, you do NOT own pSQL anymore and you shouldn't ever call
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// a function in it again.
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IMySQLAsync* CreateMySQLAsync( IMySQL *pSQL );
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#endif // MYSQL_ASYNC_H
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