Ryujinx/Ryujinx.Horizon/LogManager/Ipc/LmLogger.cs

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using Ryujinx.Common.Logging;
using Ryujinx.Common.Memory;
using Ryujinx.Horizon.Common;
using Ryujinx.Horizon.Sdk.Lm;
using Ryujinx.Horizon.Sdk.Sf;
using Ryujinx.Horizon.Sdk.Sf.Hipc;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
namespace Ryujinx.Horizon.LogManager.Ipc
{
partial class LmLogger : ILmLogger
{
private readonly LogService _log;
private readonly ulong _pid;
public LmLogger(LogService log, ulong pid)
{
_log = log;
_pid = pid;
}
[CmifCommand(0)]
public Result Log([Buffer(HipcBufferFlags.In | HipcBufferFlags.AutoSelect)] Span<byte> message)
{
if (!SetProcessId(message, _pid))
{
return Result.Success;
}
Logger.Guest?.Print(LogClass.ServiceLm, LogImpl(message));
return Result.Success;
}
[CmifCommand(1)] // 3.0.0+
public Result SetDestination(LogDestination destination)
{
_log.LogDestination = destination;
return Result.Success;
}
private static bool SetProcessId(Span<byte> message, ulong processId)
{
ref LogPacketHeader header = ref MemoryMarshal.Cast<byte, LogPacketHeader>(message)[0];
uint expectedMessageSize = (uint)Unsafe.SizeOf<LogPacketHeader>() + header.PayloadSize;
if (expectedMessageSize != (uint)message.Length)
{
Logger.Warning?.Print(LogClass.ServiceLm, $"Invalid message size (expected 0x{expectedMessageSize:X} but got 0x{message.Length:X}).");
return false;
}
header.ProcessId = processId;
return true;
}
private static string LogImpl(ReadOnlySpan<byte> message)
{
SpanReader reader = new(message);
LogPacketHeader header = reader.Read<LogPacketHeader>();
StringBuilder builder = new();
builder.AppendLine($"Guest Log:\n Log level: {header.Severity}");
while (reader.Length > 0)
{
int type = ReadUleb128(ref reader);
int size = ReadUleb128(ref reader);
LogDataChunkKey field = (LogDataChunkKey)type;
string fieldStr;
if (field == LogDataChunkKey.Start)
{
reader.Skip(size);
continue;
}
else if (field == LogDataChunkKey.Stop)
{
break;
}
else if (field == LogDataChunkKey.Line)
{
fieldStr = $"{field}: {reader.Read<int>()}";
}
else if (field == LogDataChunkKey.DropCount)
{
fieldStr = $"{field}: {reader.Read<long>()}";
}
else if (field == LogDataChunkKey.Time)
{
fieldStr = $"{field}: {reader.Read<long>()}s";
}
else if (field < LogDataChunkKey.Count)
{
fieldStr = $"{field}: '{Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd()}'";
}
else
{
fieldStr = $"Field{field}: '{Encoding.UTF8.GetString(reader.GetSpan(size)).TrimEnd()}'";
}
builder.AppendLine($" {fieldStr}");
}
return builder.ToString();
}
private static int ReadUleb128(ref SpanReader reader)
{
int result = 0;
int count = 0;
byte encoded;
do
{
encoded = reader.Read<byte>();
result += (encoded & 0x7F) << (7 * count);
count++;
} while ((encoded & 0x80) != 0);
return result;
}
}
}