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[11284] Implement prepared statements for INSERT+DELETE+UPDATE SQL requests. Should improve player save performance + lower MySQL server CPU usage.

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Note: PostgreSQL does not have prepared statements implemented using native APIs.

Huge thanks to Undergarun, kero99 and Vinolentus.

Signed-off-by: Ambal <pogrebniak@gala.net>
This commit is contained in:
Ambal 2011-03-25 21:52:59 +02:00
parent d9374d936f
commit 40ef9cbf2f
24 changed files with 1823 additions and 488 deletions
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28
src/game/MapPersistentStateMgr.cpp
View file

@ -77,9 +77,19 @@ void MapPersistentState::SaveCreatureRespawnTime(uint32 loguid, time_t t)
return;
CharacterDatabase.BeginTransaction();
CharacterDatabase.PExecute("DELETE FROM creature_respawn WHERE guid = '%u' AND instance = '%u'", loguid, m_instanceid);
static SqlStatementID delSpawnTime ;
static SqlStatementID insSpawnTime ;
SqlStatement stmt = CharacterDatabase.CreateStatement(delSpawnTime, "DELETE FROM creature_respawn WHERE guid = ? AND instance = ?");
stmt.PExecute(loguid, m_instanceid);
if(t > sWorld.GetGameTime())
CharacterDatabase.PExecute("INSERT INTO creature_respawn VALUES ( '%u', '" UI64FMTD "', '%u' )", loguid, uint64(t), m_instanceid);
{
stmt = CharacterDatabase.CreateStatement(insSpawnTime, "INSERT INTO creature_respawn VALUES ( ?, ?, ? )");
stmt.PExecute(loguid, uint64(t), m_instanceid);
}
CharacterDatabase.CommitTransaction();
}
@ -92,9 +102,19 @@ void MapPersistentState::SaveGORespawnTime(uint32 loguid, time_t t)
return;
CharacterDatabase.BeginTransaction();
CharacterDatabase.PExecute("DELETE FROM gameobject_respawn WHERE guid = '%u' AND instance = '%u'", loguid, m_instanceid);
static SqlStatementID delSpawnTime ;
static SqlStatementID insSpawnTime ;
SqlStatement stmt = CharacterDatabase.CreateStatement(delSpawnTime, "DELETE FROM gameobject_respawn WHERE guid = ? AND instance = ?");
stmt.PExecute(loguid, m_instanceid);
if(t > sWorld.GetGameTime())
CharacterDatabase.PExecute("INSERT INTO gameobject_respawn VALUES ( '%u', '" UI64FMTD "', '%u' )", loguid, uint64(t), m_instanceid);
{
stmt = CharacterDatabase.CreateStatement(insSpawnTime, "INSERT INTO gameobject_respawn VALUES ( ?, ?, ? )");
stmt.PExecute(loguid, uint64(t), m_instanceid);
}
CharacterDatabase.CommitTransaction();
}