Ryujinx/Ryujinx.Common/SystemInterop/StdErrAdapter.cs

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2023-03-04 14:43:08 +01:00
using Ryujinx.Common.Logging;
using System;
using System.IO;
2023-03-04 14:43:08 +01:00
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using System.Threading;
namespace Ryujinx.Common.SystemInterop
{
public partial class StdErrAdapter : IDisposable
{
private bool _disposable = false;
private UnixStream _pipeReader;
private UnixStream _pipeWriter;
private Thread _worker;
public StdErrAdapter()
{
if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
RegisterPosix();
}
}
[SupportedOSPlatform("linux")]
[SupportedOSPlatform("macos")]
private void RegisterPosix()
{
const int stdErrFileno = 2;
(int readFd, int writeFd) = MakePipe();
dup2(writeFd, stdErrFileno);
_pipeReader = new UnixStream(readFd);
_pipeWriter = new UnixStream(writeFd);
_worker = new Thread(EventWorker);
_disposable = true;
_worker.Start();
}
[SupportedOSPlatform("linux")]
[SupportedOSPlatform("macos")]
private void EventWorker()
{
TextReader reader = new StreamReader(_pipeReader);
string line;
while ((line = reader.ReadLine()) != null)
{
Logger.Error?.PrintRawMsg(line);
}
}
private void Dispose(bool disposing)
{
if (_disposable)
{
if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
{
_pipeReader?.Close();
_pipeWriter?.Close();
}
_disposable = false;
}
}
public void Dispose()
{
Dispose(true);
}
[LibraryImport("libc", SetLastError = true)]
private static partial int dup2(int fd, int fd2);
[LibraryImport("libc", SetLastError = true)]
private static unsafe partial int pipe(int* pipefd);
private static unsafe (int, int) MakePipe()
{
int *pipefd = stackalloc int[2];
if (pipe(pipefd) == 0)
{
return (pipefd[0], pipefd[1]);
}
else
{
throw new();
}
}
}
}