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Add thead safety to terrain data (#1999)

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Allow safely reading terrain data from other threads
This commit is contained in:
ORelio 2022-04-23 12:00:50 +02:00
parent d6220ff779
commit aeca6a8f53
3 changed files with 101 additions and 25 deletions
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24
MinecraftClient/Mapping/Chunk.cs
View file

@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace MinecraftClient.Mapping
{
@ -19,6 +20,11 @@ namespace MinecraftClient.Mapping
/// </summary>
private readonly Block[,,] blocks = new Block[SizeX, SizeY, SizeZ];
/// <summary>
/// Lock for thread safety
/// </summary>
private readonly ReaderWriterLockSlim blockLock = new ReaderWriterLockSlim();
/// <summary>
/// Read, or set the specified block
/// </summary>
@ -36,8 +42,17 @@ namespace MinecraftClient.Mapping
throw new ArgumentOutOfRangeException("blockY", "Must be between 0 and " + (SizeY - 1) + " (inclusive)");
if (blockZ < 0 || blockZ >= SizeZ)
throw new ArgumentOutOfRangeException("blockZ", "Must be between 0 and " + (SizeZ - 1) + " (inclusive)");
blockLock.EnterReadLock();
try
{
return blocks[blockX, blockY, blockZ];
}
finally
{
blockLock.ExitReadLock();
}
}
set
{
if (blockX < 0 || blockX >= SizeX)
@ -46,8 +61,17 @@ namespace MinecraftClient.Mapping
throw new ArgumentOutOfRangeException("blockY", "Must be between 0 and " + (SizeY - 1) + " (inclusive)");
if (blockZ < 0 || blockZ >= SizeZ)
throw new ArgumentOutOfRangeException("blockZ", "Must be between 0 and " + (SizeZ - 1) + " (inclusive)");
blockLock.EnterWriteLock();
try
{
blocks[blockX, blockY, blockZ] = value;
}
finally
{
blockLock.ExitWriteLock();
}
}
}
/// <summary>

22
MinecraftClient/Mapping/ChunkColumn.cs
View file

@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace MinecraftClient.Mapping
{
@ -17,6 +18,11 @@ namespace MinecraftClient.Mapping
/// </summary>
private readonly Chunk[] chunks = new Chunk[ColumnSize];
/// <summary>
/// Lock for thread safety
/// </summary>
private readonly ReaderWriterLockSlim chunkLock = new ReaderWriterLockSlim();
/// <summary>
/// Get or set the specified chunk column
/// </summary>
@ -26,13 +32,29 @@ namespace MinecraftClient.Mapping
public Chunk this[int chunkY]
{
get
{
chunkLock.EnterReadLock();
try
{
return chunks[chunkY];
}
finally
{
chunkLock.ExitReadLock();
}
}
set
{
chunkLock.EnterWriteLock();
try
{
chunks[chunkY] = value;
}
finally
{
chunkLock.ExitWriteLock();
}
}
}
/// <summary>

32
MinecraftClient/Mapping/World.cs
View file

@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace MinecraftClient.Mapping
{
@ -15,6 +16,11 @@ namespace MinecraftClient.Mapping
/// </summary>
private Dictionary<int, Dictionary<int, ChunkColumn>> chunks = new Dictionary<int, Dictionary<int, ChunkColumn>>();
/// <summary>
/// Lock for thread safety
/// </summary>
private readonly ReaderWriterLockSlim chunksLock = new ReaderWriterLockSlim();
/// <summary>
/// Read, set or unload the specified chunk column
/// </summary>
@ -24,6 +30,9 @@ namespace MinecraftClient.Mapping
public ChunkColumn this[int chunkX, int chunkZ]
{
get
{
chunksLock.EnterReadLock();
try
{
//Read a chunk
if (chunks.ContainsKey(chunkX))
@ -31,7 +40,15 @@ namespace MinecraftClient.Mapping
return chunks[chunkX][chunkZ];
return null;
}
finally
{
chunksLock.ExitReadLock();
}
}
set
{
chunksLock.EnterWriteLock();
try
{
if (value != null)
{
@ -54,6 +71,11 @@ namespace MinecraftClient.Mapping
}
}
}
finally
{
chunksLock.ExitWriteLock();
}
}
}
/// <summary>
@ -117,7 +139,7 @@ namespace MinecraftClient.Mapping
{
Location doneloc = new Location(x, y, z);
Block doneblock = GetBlock(doneloc);
Material blockType = GetBlock(doneloc).Type;
Material blockType = doneblock.Type;
if (blockType == block)
{
list.Add(doneloc);
@ -149,9 +171,17 @@ namespace MinecraftClient.Mapping
/// Clear all terrain data from the world
/// </summary>
public void Clear()
{
chunksLock.EnterWriteLock();
try
{
chunks = new Dictionary<int, Dictionary<int, ChunkColumn>>();
}
finally
{
chunksLock.ExitWriteLock();
}
}
/// <summary>
/// Get the location of block of the entity is looking