From: melchior <melchior@users.osdn.me>
Date: Sat, 25 Apr 2020 20:55:25 +0000 (-0400)
Subject: Potential fix for Memory leak - Clear (some) Metadata post persist
X-Git-Tag: PR7x~8^2
X-Git-Url: http://git.osdn.net/view?p=automap%2Fautomap.git;a=commitdiff_plain;h=refs%2Fheads%2FSplit_renderers

Potential fix for Memory leak - Clear (some) Metadata post persist
---

diff --git a/Automap/Data/ColumnMeta.cs b/Automap/Data/ColumnMeta.cs
index 5ee3945..b767066 100644
--- a/Automap/Data/ColumnMeta.cs
+++ b/Automap/Data/ColumnMeta.cs
@@ -128,18 +128,22 @@ namespace Automap
 		[ProtoAfterDeserialization]
 		private void PostProcess()
 		{
-			if (this.HeightMap == null) this.HeightMap = new ushort[ChunkSize, ChunkSize];
+			ChunkSize = (ChunkSize == byte.MinValue) ? (byte)32 : ChunkSize;//Not good - if chunk wasn't 32 orignally!
+
+			if (this.HeightMap == null || this.HeightMap.Length != (ChunkSize * ChunkSize)) {
+			this.HeightMap = new ushort[ChunkSize, ChunkSize];
+			}
 
 			if (_flattened_HeightMap != null)
 			{
 				int col, row;
-				_ = new BitVector32(0);
+				var bitMasker = new BitVector32(0);
 				var rowSection = BitVector32.CreateSection((short) (ChunkSize - 1));
 				var colSection = BitVector32.CreateSection((short) (ChunkSize - 1), rowSection);
 
 				for (uint rowcol = 0; rowcol < (ChunkSize * ChunkSize); rowcol++)
 				{
-					BitVector32 bitMasker = new BitVector32(data: (int) rowcol);
+					bitMasker = new BitVector32(data: (int) rowcol);
 					row = bitMasker[rowSection];
 					col = bitMasker[colSection];
 					HeightMap[col, row] = _flattened_HeightMap[rowcol];
@@ -231,5 +235,14 @@ namespace Automap
 			base.Add(newItem);
 		}
 
+		public void ClearMetadata( )
+		{
+		for (int i = 0, maxItemsCount = this.Items.Count; i < maxItemsCount; i++) {
+		ColumnMeta entry = this.Items[i];
+		entry.HeightMap = null;
+		entry.RockRatio = null;//Also regenerated when any chunk in a column is changed...
+		}
+		}
+
 	}
-}
\ No newline at end of file
+}
diff --git a/Automap/Subsystems/AutomapSystem.cs b/Automap/Subsystems/AutomapSystem.cs
index 8cbfc20..880fe90 100644
--- a/Automap/Subsystems/AutomapSystem.cs
+++ b/Automap/Subsystems/AutomapSystem.cs
@@ -53,7 +53,7 @@ namespace Automap
 
 		internal CommandType CurrentState { get; set; }
 		//Run status, Chunks processed, stats, center of map....
-		private uint nullChunkCount, updatedChunksTotal;
+		private uint nullChunkCount, nullMapCount, updatedChunksTotal;
 		private Vec2i startChunkColumn;
 
 		private readonly int chunkSize;
@@ -184,7 +184,7 @@ namespace Automap
 						if (mapChunk == null)
 						{
 							Logger.Warning("SKIP CHUNK: ({0}) - Map Chunk NULL!", mostActiveCol.Key);
-							nullChunkCount++;
+							nullMapCount++;
 							columnCounter.TryRemove(mostActiveCol.Key, out ejectedItem);
 							continue;
 						}
@@ -219,8 +219,9 @@ namespace Automap
 							columnCounter.TryRemove(mostActiveCol.Key, out ejectedItem);
 							Logger.VerboseDebug("Un-painted chunk: ({0}) ", mostActiveCol.Key);
 						}
-
 					}
+				//Cleanup persisted Metadata...
+				chunkTopMetadata.ClearMetadata( );
 				}
 
 				UpdateStatus(this.updatedChunksTotal, this.nullChunkCount, updatedChunks);
@@ -500,6 +501,7 @@ namespace Automap
 			#if DEBUG
 			Logger.VerboseDebug("Chunk null or empty X{0} Y{1} Z{2}", key.X, targetChunkY, key.Y);
 			#endif
+			nullChunkCount++;
 			continue;
 			}
 
@@ -512,14 +514,12 @@ namespace Automap
 
 					foreach (var blockEnt in chunkData.BlockEntities)
 					{
-
 						if (blockEnt != null && blockEnt.Block != null && BlockID_Designators.ContainsKey(blockEnt.Block.BlockId))
 						{
 							var designator = BlockID_Designators[blockEnt.Block.BlockId];
 							designator.SpecialAction(ClientAPI, POIs, blockEnt.Pos.Copy(), blockEnt.Block);
 						}
 					}
-
 				}
 				/********************* Chunk/Column BLOCKs scanning ****************/
 				//Heightmap, Stats, block tally
@@ -528,6 +528,10 @@ namespace Automap
 				int X_index, Y_index, Z_index;
 				X_index = Y_index = Z_index = 0;
 
+				//Ensure ChunkData Metadata fields arn't null...due to being tossed out
+				if (chunkMeta.HeightMap == null) { chunkMeta.HeightMap = new ushort[chunkSize, chunkSize]; }
+				if (chunkMeta.RockRatio == null) { chunkMeta.RockRatio = new Dictionary<int, uint>(10); }
+
 				do
 				{
 					do