03d0a4664e
- [X] Adds support for `SkipLocalsInitAttribute`. SkipLocalsInitAttribute skips initializing stack variables including `stackalloc`. I don't think it is wired/working yet but should be implemented soon. - [X] Optimizes broadcasted packets by checking if the first byte (packet ID) is non-zero. If it is already set, it reuses the buffer. - [X] Removes unnecessary refs to Spans. I don't think the Span struct itself is mutable, so a ref is not helpful.
67 lines
2.6 KiB
C#
67 lines
2.6 KiB
C#
/*************************************************************************
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* ModernUO *
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* Copyright 2019-2020 - ModernUO Development Team *
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* Email: hi@modernuo.com *
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* File: PacketUtilities.cs *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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*************************************************************************/
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using System;
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using System.Buffers;
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using System.IO;
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using System.Runtime.CompilerServices;
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namespace Server.Network
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{
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public static class PacketUtilities
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void WritePacketLength(this CircularBufferWriter writer)
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{
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var length = writer.Position;
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writer.Seek(1, SeekOrigin.Begin);
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writer.Write((ushort)length);
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writer.Seek(length, SeekOrigin.Begin);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void WritePacketLength(this SpanWriter writer)
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{
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var length = writer.Position;
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writer.Seek(1, SeekOrigin.Begin);
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writer.Write((ushort)length);
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writer.Seek(length, SeekOrigin.Begin);
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}
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// If LOCAL INIT is off, then stack/heap allocations have garbage data
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// Initializes the first byte (Packet ID) so it can be used as a flag.
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void InitializePacket(this Span<byte> buffer)
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{
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#if NO_LOCAL_INIT
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buffer[0] = 0;
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#endif
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void InitializePackets(this Span<byte> buffer, int chunkLength)
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{
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#if NO_LOCAL_INIT
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var index = 0;
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while (index < buffer.Length)
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{
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buffer[index] = 0;
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index += chunkLength;
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}
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#endif
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}
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}
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}
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