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some changes to reduce memory significantly by not keeping all 

terrain revisions in memory.  Once I'm sure this is working, I'll purge
out some of the crufty code here.
afrisby
Sean Dague 2007-11-13 15:22:54 +00:00
parent ae4312a698
commit 7810b068f4
1 changed files with 36 additions and 24 deletions
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58
OpenSim/Region/Storage/OpenSim.DataStore.MonoSqlite/MonoSqliteDataStore.cs
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@ -44,11 +44,12 @@ namespace OpenSim.DataStore.MonoSqlite
{
private const string primSelect = "select * from prims";
private const string shapeSelect = "select * from primshapes";
private const string terrainSelect = "select * from terrain";
private const string terrainSelect = "select * from terrain limit 1";
private DataSet ds;
private SqliteDataAdapter primDa;
private SqliteDataAdapter shapeDa;
private SqliteConnection conn;
private SqliteDataAdapter terrainDa;
/***********************************************************************
@ -64,7 +65,7 @@ namespace OpenSim.DataStore.MonoSqlite
ds = new DataSet();
MainLog.Instance.Verbose("DATASTORE", "Sqlite - connecting: " + dbfile);
SqliteConnection conn = new SqliteConnection(connectionString);
conn = new SqliteConnection(connectionString);
SqliteCommand primSelectCmd = new SqliteCommand(primSelect, conn);
primDa = new SqliteDataAdapter(primSelectCmd);
@ -245,17 +246,20 @@ namespace OpenSim.DataStore.MonoSqlite
public void StoreTerrain(double[,] ter, LLUUID regionID)
{
int revision = Util.UnixTimeSinceEpoch();
MainLog.Instance.Verbose("DATASTORE", "Storing terrain revision r" + revision.ToString());
DataTable terrain = ds.Tables["terrain"];
lock (ds)
{
DataRow newrow = terrain.NewRow();
fillTerrainRow(newrow, regionID, revision, ter);
terrain.Rows.Add(newrow);
Commit();
SqliteCommand cmd = new SqliteCommand("insert into terrain(RegionUUID, Revision, Heightfield)" +
"values(:RegionUUID, :Revision, :Heightfield)", conn);
using(cmd)
{
cmd.Parameters.Add(":RegionUUID", regionID);
cmd.Parameters.Add(":Revision", revision);
cmd.Parameters.Add(":Heightfield", serializeTerrain(ter));
cmd.ExecuteNonQuery();
}
}
}
@ -264,18 +268,15 @@ namespace OpenSim.DataStore.MonoSqlite
double[,] terret = new double[256,256];
terret.Initialize();
DataTable terrain = ds.Tables["terrain"];
SqliteCommand cmd = new SqliteCommand("select RegionUUID, Revision, Heightfield from terrain" +
"where RegionUUID=:RegionUUID order by Revision desc limit 1", conn);
cmd.Parameters.Add(":RegionUUID", regionID);
lock (ds)
using (SqliteDataReader row = cmd.ExecuteReader(CommandBehavior.SingleRow))
{
DataRow[] rows = terrain.Select("RegionUUID = '" + regionID.ToString() + "'", "Revision DESC");
int rev = 0;
if (rows.Length > 0)
if (row.Read())
{
DataRow row = rows[0];
byte[] heightmap = (byte[]) row["Heightfield"];
for (int x = 0; x < 256; x++)
{
@ -284,7 +285,6 @@ namespace OpenSim.DataStore.MonoSqlite
terret[x, y] = BitConverter.ToDouble(heightmap, ((x*256) + y)*8);
}
}
rev = (int)row["Revision"];
}
else
@ -293,7 +293,6 @@ namespace OpenSim.DataStore.MonoSqlite
return null;
}
MainLog.Instance.Verbose("DATASTORE", "Loaded terrain revision r" + rev.ToString());
}
@ -522,11 +521,8 @@ namespace OpenSim.DataStore.MonoSqlite
return prim;
}
private void fillTerrainRow(DataRow row, LLUUID regionUUID, int rev, double[,] val)
private Array serializeTerrain(double[,] val)
{
row["RegionUUID"] = regionUUID;
row["Revision"] = rev;
MemoryStream str = new MemoryStream(65536*sizeof (double));
BinaryWriter bw = new BinaryWriter(str);
@ -535,9 +531,25 @@ namespace OpenSim.DataStore.MonoSqlite
for (int y = 0; y < 256; y++)
bw.Write(val[x, y]);
row["Heightfield"] = str.ToArray();
return str.ToArray();
}
// private void fillTerrainRow(DataRow row, LLUUID regionUUID, int rev, double[,] val)
// {
// row["RegionUUID"] = regionUUID;
// row["Revision"] = rev;
// MemoryStream str = new MemoryStream(65536*sizeof (double));
// BinaryWriter bw = new BinaryWriter(str);
// // TODO: COMPATIBILITY - Add byte-order conversions
// for (int x = 0; x < 256; x++)
// for (int y = 0; y < 256; y++)
// bw.Write(val[x, y]);
// row["Heightfield"] = str.ToArray();
// }
private void fillPrimRow(DataRow row, SceneObjectPart prim, LLUUID sceneGroupID, LLUUID regionUUID)
{
row["UUID"] = prim.UUID;