From 6eb915c129fc90c6f4c82ae097dd6ffad5239efc Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Mon, 25 Jan 2021 14:28:30 +0800
Subject: +scripts

---
 .../Scripts/XMainClient/ProtoBuf/BufferPool.cs     | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 Client/Assets/Scripts/XMainClient/ProtoBuf/BufferPool.cs

(limited to 'Client/Assets/Scripts/XMainClient/ProtoBuf/BufferPool.cs')

diff --git a/Client/Assets/Scripts/XMainClient/ProtoBuf/BufferPool.cs b/Client/Assets/Scripts/XMainClient/ProtoBuf/BufferPool.cs
new file mode 100644
index 00000000..36aabc3a
--- /dev/null
+++ b/Client/Assets/Scripts/XMainClient/ProtoBuf/BufferPool.cs
@@ -0,0 +1,87 @@
+using System;
+using System.Threading;
+
+namespace ProtoBuf
+{
+	internal sealed class BufferPool
+	{
+		private const int PoolSize = 20;
+
+		internal const int BufferLength = 1024;
+
+		private static readonly object[] pool = new object[20];
+
+		internal static void Flush()
+		{
+			for (int i = 0; i < BufferPool.pool.Length; i++)
+			{
+				Interlocked.Exchange(ref BufferPool.pool[i], null);
+			}
+		}
+
+		private BufferPool()
+		{
+		}
+
+		internal static byte[] GetBuffer()
+		{
+			for (int i = 0; i < BufferPool.pool.Length; i++)
+			{
+				object obj;
+				bool flag = (obj = Interlocked.Exchange(ref BufferPool.pool[i], null)) != null;
+				if (flag)
+				{
+					return (byte[])obj;
+				}
+			}
+			return new byte[1024];
+		}
+
+		internal static void ResizeAndFlushLeft(ref byte[] buffer, int toFitAtLeastBytes, int copyFromIndex, int copyBytes)
+		{
+			Helpers.DebugAssert(buffer != null);
+			Helpers.DebugAssert(toFitAtLeastBytes > buffer.Length);
+			Helpers.DebugAssert(copyFromIndex >= 0);
+			Helpers.DebugAssert(copyBytes >= 0);
+			int num = buffer.Length * 2;
+			bool flag = num < toFitAtLeastBytes;
+			if (flag)
+			{
+				num = toFitAtLeastBytes;
+			}
+			byte[] array = new byte[num];
+			bool flag2 = copyBytes > 0;
+			if (flag2)
+			{
+				Helpers.BlockCopy(buffer, copyFromIndex, array, 0, copyBytes);
+			}
+			bool flag3 = buffer.Length == 1024;
+			if (flag3)
+			{
+				BufferPool.ReleaseBufferToPool(ref buffer);
+			}
+			buffer = array;
+		}
+
+		internal static void ReleaseBufferToPool(ref byte[] buffer)
+		{
+			bool flag = buffer == null;
+			if (!flag)
+			{
+				bool flag2 = buffer.Length == 1024;
+				if (flag2)
+				{
+					for (int i = 0; i < BufferPool.pool.Length; i++)
+					{
+						bool flag3 = Interlocked.CompareExchange(ref BufferPool.pool[i], buffer, null) == null;
+						if (flag3)
+						{
+							break;
+						}
+					}
+				}
+				buffer = null;
+			}
+		}
+	}
+}
-- 
cgit v1.1-26-g67d0