mirror of
https://github.com/ryujinx-mirror/ryujinx.git
synced 2024-12-22 22:36:25 +00:00
ServerBase thread safety (#4577)
* Add guard against ServerBase.Dispose() being called multiple times. Add reset event to avoid Dispose() being called while the ServerLoop is still running. * remove unused usings * rework ServerBase to use one collection each for sessions and ports, and make all accesses thread-safe. * fix Logger call * use GetSessionObj(int) instead of using _sessions directly * move _threadStopped check inside "dispose once" test * - Replace _threadStopped event with attempt to Join() the ending thread (if that isn't the current thread) instead. - Use the instance-local _selfProcess and (new) _selfThread variables to avoid suggesting that the current KProcess and KThread could change. Per gdkchan, they can't currently, and this old IPC system will be removed before that changes. - Re-order Dispose() so that the Interlocked _isDisposed check is the last check before disposing, to increase the likelihood that multiple callers will result in one of them succeeding. * code style suggestions per AcK77 * add infinite wait for thread termination
This commit is contained in:
jhorv
GitHub
parent
5626f2ca1c
commit
21e88f17f6
@ -1,4 +1,5 @@
|
||||
using Ryujinx.Common;
|
||||
using Ryujinx.Common.Logging;
|
||||
using Ryujinx.Common.Memory;
|
||||
using Ryujinx.HLE.HOS.Ipc;
|
||||
using Ryujinx.HLE.HOS.Kernel;
|
||||
@ -32,13 +33,14 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
0x01007FFF
|
||||
};
|
||||
|
||||
private readonly object _handleLock = new();
|
||||
// The amount of time Dispose() will wait to Join() the thread executing the ServerLoop()
|
||||
private static readonly TimeSpan ThreadJoinTimeout = TimeSpan.FromSeconds(3);
|
||||
|
||||
private readonly KernelContext _context;
|
||||
private KProcess _selfProcess;
|
||||
private KThread _selfThread;
|
||||
|
||||
private readonly List<int> _sessionHandles = new List<int>();
|
||||
private readonly List<int> _portHandles = new List<int>();
|
||||
private readonly ReaderWriterLockSlim _handleLock = new ReaderWriterLockSlim();
|
||||
private readonly Dictionary<int, IpcService> _sessions = new Dictionary<int, IpcService>();
|
||||
private readonly Dictionary<int, Func<IpcService>> _ports = new Dictionary<int, Func<IpcService>>();
|
||||
|
||||
@ -48,6 +50,8 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
private readonly MemoryStream _responseDataStream;
|
||||
private readonly BinaryWriter _responseDataWriter;
|
||||
|
||||
private int _isDisposed = 0;
|
||||
|
||||
public ManualResetEvent InitDone { get; }
|
||||
public string Name { get; }
|
||||
public Func<IpcService> SmObjectFactory { get; }
|
||||
@ -79,12 +83,21 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
private void AddPort(int serverPortHandle, Func<IpcService> objectFactory)
|
||||
{
|
||||
lock (_handleLock)
|
||||
bool lockTaken = false;
|
||||
try
|
||||
{
|
||||
_portHandles.Add(serverPortHandle);
|
||||
}
|
||||
lockTaken = _handleLock.TryEnterWriteLock(Timeout.Infinite);
|
||||
|
||||
_ports.Add(serverPortHandle, objectFactory);
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lockTaken)
|
||||
{
|
||||
_handleLock.ExitWriteLock();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public void AddSessionObj(KServerSession serverSession, IpcService obj)
|
||||
{
|
||||
@ -92,17 +105,63 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
InitDone.WaitOne();
|
||||
|
||||
_selfProcess.HandleTable.GenerateHandle(serverSession, out int serverSessionHandle);
|
||||
|
||||
AddSessionObj(serverSessionHandle, obj);
|
||||
}
|
||||
|
||||
public void AddSessionObj(int serverSessionHandle, IpcService obj)
|
||||
{
|
||||
lock (_handleLock)
|
||||
bool lockTaken = false;
|
||||
try
|
||||
{
|
||||
_sessionHandles.Add(serverSessionHandle);
|
||||
}
|
||||
lockTaken = _handleLock.TryEnterWriteLock(Timeout.Infinite);
|
||||
|
||||
_sessions.Add(serverSessionHandle, obj);
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lockTaken)
|
||||
{
|
||||
_handleLock.ExitWriteLock();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private IpcService GetSessionObj(int serverSessionHandle)
|
||||
{
|
||||
bool lockTaken = false;
|
||||
try
|
||||
{
|
||||
lockTaken = _handleLock.TryEnterReadLock(Timeout.Infinite);
|
||||
|
||||
return _sessions[serverSessionHandle];
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lockTaken)
|
||||
{
|
||||
_handleLock.ExitReadLock();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private bool RemoveSessionObj(int serverSessionHandle, out IpcService obj)
|
||||
{
|
||||
bool lockTaken = false;
|
||||
try
|
||||
{
|
||||
lockTaken = _handleLock.TryEnterWriteLock(Timeout.Infinite);
|
||||
|
||||
return _sessions.Remove(serverSessionHandle, out obj);
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (lockTaken)
|
||||
{
|
||||
_handleLock.ExitWriteLock();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void Main()
|
||||
{
|
||||
@ -112,6 +171,7 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
private void ServerLoop()
|
||||
{
|
||||
_selfProcess = KernelStatic.GetCurrentProcess();
|
||||
_selfThread = KernelStatic.GetCurrentThread();
|
||||
|
||||
if (SmObjectFactory != null)
|
||||
{
|
||||
@ -122,8 +182,7 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
InitDone.Set();
|
||||
|
||||
KThread thread = KernelStatic.GetCurrentThread();
|
||||
ulong messagePtr = thread.TlsAddress;
|
||||
ulong messagePtr = _selfThread.TlsAddress;
|
||||
_context.Syscall.SetHeapSize(out ulong heapAddr, 0x200000);
|
||||
|
||||
_selfProcess.CpuMemory.Write(messagePtr + 0x0, 0);
|
||||
@ -134,27 +193,39 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
while (true)
|
||||
{
|
||||
int handleCount;
|
||||
int portHandleCount;
|
||||
int handleCount;
|
||||
int[] handles;
|
||||
|
||||
lock (_handleLock)
|
||||
bool handleLockTaken = false;
|
||||
try
|
||||
{
|
||||
portHandleCount = _portHandles.Count;
|
||||
handleCount = portHandleCount + _sessionHandles.Count;
|
||||
handleLockTaken = _handleLock.TryEnterReadLock(Timeout.Infinite);
|
||||
|
||||
portHandleCount = _ports.Count;
|
||||
|
||||
handleCount = portHandleCount + _sessions.Count;
|
||||
|
||||
handles = ArrayPool<int>.Shared.Rent(handleCount);
|
||||
|
||||
_portHandles.CopyTo(handles, 0);
|
||||
_sessionHandles.CopyTo(handles, portHandleCount);
|
||||
_ports.Keys.CopyTo(handles, 0);
|
||||
|
||||
_sessions.Keys.CopyTo(handles, portHandleCount);
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (handleLockTaken)
|
||||
{
|
||||
_handleLock.ExitReadLock();
|
||||
}
|
||||
}
|
||||
|
||||
// We still need a timeout here to allow the service to pick up and listen new sessions...
|
||||
var rc = _context.Syscall.ReplyAndReceive(out int signaledIndex, handles.AsSpan(0, handleCount), replyTargetHandle, 1000000L);
|
||||
|
||||
thread.HandlePostSyscall();
|
||||
_selfThread.HandlePostSyscall();
|
||||
|
||||
if (!thread.Context.Running)
|
||||
if (!_selfThread.Context.Running)
|
||||
{
|
||||
break;
|
||||
}
|
||||
@ -178,9 +249,20 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
// We got a new connection, accept the session to allow servicing future requests.
|
||||
if (_context.Syscall.AcceptSession(out int serverSessionHandle, handles[signaledIndex]) == Result.Success)
|
||||
{
|
||||
bool handleWriteLockTaken = false;
|
||||
try
|
||||
{
|
||||
handleWriteLockTaken = _handleLock.TryEnterWriteLock(Timeout.Infinite);
|
||||
IpcService obj = _ports[handles[signaledIndex]].Invoke();
|
||||
|
||||
AddSessionObj(serverSessionHandle, obj);
|
||||
_sessions.Add(serverSessionHandle, obj);
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (handleWriteLockTaken)
|
||||
{
|
||||
_handleLock.ExitWriteLock();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -197,11 +279,7 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
private bool Process(int serverSessionHandle, ulong recvListAddr)
|
||||
{
|
||||
KProcess process = KernelStatic.GetCurrentProcess();
|
||||
KThread thread = KernelStatic.GetCurrentThread();
|
||||
ulong messagePtr = thread.TlsAddress;
|
||||
|
||||
IpcMessage request = ReadRequest(process, messagePtr);
|
||||
IpcMessage request = ReadRequest();
|
||||
|
||||
IpcMessage response = new IpcMessage();
|
||||
|
||||
@ -247,15 +325,15 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
ServiceCtx context = new ServiceCtx(
|
||||
_context.Device,
|
||||
process,
|
||||
process.CpuMemory,
|
||||
thread,
|
||||
_selfProcess,
|
||||
_selfProcess.CpuMemory,
|
||||
_selfThread,
|
||||
request,
|
||||
response,
|
||||
_requestDataReader,
|
||||
_responseDataWriter);
|
||||
|
||||
_sessions[serverSessionHandle].CallCmifMethod(context);
|
||||
GetSessionObj(serverSessionHandle).CallCmifMethod(context);
|
||||
|
||||
response.RawData = _responseDataStream.ToArray();
|
||||
}
|
||||
@ -268,7 +346,7 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
switch (cmdId)
|
||||
{
|
||||
case 0:
|
||||
FillHipcResponse(response, 0, _sessions[serverSessionHandle].ConvertToDomain());
|
||||
FillHipcResponse(response, 0, GetSessionObj(serverSessionHandle).ConvertToDomain());
|
||||
break;
|
||||
|
||||
case 3:
|
||||
@ -278,17 +356,31 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
// TODO: Whats the difference between IpcDuplicateSession/Ex?
|
||||
case 2:
|
||||
case 4:
|
||||
int unknown = _requestDataReader.ReadInt32();
|
||||
{
|
||||
_ = _requestDataReader.ReadInt32();
|
||||
|
||||
_context.Syscall.CreateSession(out int dupServerSessionHandle, out int dupClientSessionHandle, false, 0);
|
||||
|
||||
AddSessionObj(dupServerSessionHandle, _sessions[serverSessionHandle]);
|
||||
bool writeLockTaken = false;
|
||||
try
|
||||
{
|
||||
writeLockTaken = _handleLock.TryEnterWriteLock(Timeout.Infinite);
|
||||
_sessions[dupServerSessionHandle] = _sessions[serverSessionHandle];
|
||||
}
|
||||
finally
|
||||
{
|
||||
if (writeLockTaken)
|
||||
{
|
||||
_handleLock.ExitWriteLock();
|
||||
}
|
||||
}
|
||||
|
||||
response.HandleDesc = IpcHandleDesc.MakeMove(dupClientSessionHandle);
|
||||
|
||||
FillHipcResponse(response, 0);
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
default: throw new NotImplementedException(cmdId.ToString());
|
||||
}
|
||||
@ -296,13 +388,10 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
else if (request.Type == IpcMessageType.CmifCloseSession || request.Type == IpcMessageType.TipcCloseSession)
|
||||
{
|
||||
_context.Syscall.CloseHandle(serverSessionHandle);
|
||||
lock (_handleLock)
|
||||
if (RemoveSessionObj(serverSessionHandle, out var session))
|
||||
{
|
||||
_sessionHandles.Remove(serverSessionHandle);
|
||||
(session as IDisposable)?.Dispose();
|
||||
}
|
||||
IpcService service = _sessions[serverSessionHandle];
|
||||
(service as IDisposable)?.Dispose();
|
||||
_sessions.Remove(serverSessionHandle);
|
||||
shouldReply = false;
|
||||
}
|
||||
// If the type is past 0xF, we are using TIPC
|
||||
@ -317,20 +406,20 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
ServiceCtx context = new ServiceCtx(
|
||||
_context.Device,
|
||||
process,
|
||||
process.CpuMemory,
|
||||
thread,
|
||||
_selfProcess,
|
||||
_selfProcess.CpuMemory,
|
||||
_selfThread,
|
||||
request,
|
||||
response,
|
||||
_requestDataReader,
|
||||
_responseDataWriter);
|
||||
|
||||
_sessions[serverSessionHandle].CallTipcMethod(context);
|
||||
GetSessionObj(serverSessionHandle).CallTipcMethod(context);
|
||||
|
||||
response.RawData = _responseDataStream.ToArray();
|
||||
|
||||
using var responseStream = response.GetStreamTipc();
|
||||
process.CpuMemory.Write(messagePtr, responseStream.GetReadOnlySequence());
|
||||
_selfProcess.CpuMemory.Write(_selfThread.TlsAddress, responseStream.GetReadOnlySequence());
|
||||
}
|
||||
else
|
||||
{
|
||||
@ -339,27 +428,24 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
if (!isTipcCommunication)
|
||||
{
|
||||
using var responseStream = response.GetStream((long)messagePtr, recvListAddr | ((ulong)PointerBufferSize << 48));
|
||||
process.CpuMemory.Write(messagePtr, responseStream.GetReadOnlySequence());
|
||||
using var responseStream = response.GetStream((long)_selfThread.TlsAddress, recvListAddr | ((ulong)PointerBufferSize << 48));
|
||||
_selfProcess.CpuMemory.Write(_selfThread.TlsAddress, responseStream.GetReadOnlySequence());
|
||||
}
|
||||
|
||||
return shouldReply;
|
||||
}
|
||||
|
||||
private static IpcMessage ReadRequest(KProcess process, ulong messagePtr)
|
||||
private IpcMessage ReadRequest()
|
||||
{
|
||||
const int messageSize = 0x100;
|
||||
|
||||
byte[] reqData = ArrayPool<byte>.Shared.Rent(messageSize);
|
||||
using IMemoryOwner<byte> reqDataOwner = ByteMemoryPool.Shared.Rent(messageSize);
|
||||
|
||||
Span<byte> reqDataSpan = reqData.AsSpan(0, messageSize);
|
||||
reqDataSpan.Clear();
|
||||
Span<byte> reqDataSpan = reqDataOwner.Memory.Span;
|
||||
|
||||
process.CpuMemory.Read(messagePtr, reqDataSpan);
|
||||
_selfProcess.CpuMemory.Read(_selfThread.TlsAddress, reqDataSpan);
|
||||
|
||||
IpcMessage request = new IpcMessage(reqDataSpan, (long)messagePtr);
|
||||
|
||||
ArrayPool<byte>.Shared.Return(reqData);
|
||||
IpcMessage request = new IpcMessage(reqDataSpan, (long)_selfThread.TlsAddress);
|
||||
|
||||
return request;
|
||||
}
|
||||
@ -392,19 +478,27 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
|
||||
protected virtual void Dispose(bool disposing)
|
||||
{
|
||||
if (disposing)
|
||||
if (disposing && _selfThread != null)
|
||||
{
|
||||
if (_selfThread.HostThread.ManagedThreadId != Environment.CurrentManagedThreadId && _selfThread.HostThread.Join(ThreadJoinTimeout) == false)
|
||||
{
|
||||
Logger.Warning?.Print(LogClass.Service, $"The ServerBase thread didn't terminate within {ThreadJoinTimeout:g}, waiting longer.");
|
||||
|
||||
_selfThread.HostThread.Join(Timeout.Infinite);
|
||||
}
|
||||
|
||||
if (Interlocked.Exchange(ref _isDisposed, 1) == 0)
|
||||
{
|
||||
foreach (IpcService service in _sessions.Values)
|
||||
{
|
||||
if (service is IDisposable disposableObj)
|
||||
{
|
||||
disposableObj.Dispose();
|
||||
}
|
||||
(service as IDisposable)?.Dispose();
|
||||
|
||||
service.DestroyAtExit();
|
||||
}
|
||||
|
||||
_sessions.Clear();
|
||||
_ports.Clear();
|
||||
_handleLock.Dispose();
|
||||
|
||||
_requestDataReader.Dispose();
|
||||
_requestDataStream.Dispose();
|
||||
@ -414,6 +508,7 @@ namespace Ryujinx.HLE.HOS.Services
|
||||
InitDone.Dispose();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public void Dispose()
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user