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using Ryujinx.Horizon.Sdk.OsTypes;
using Ryujinx.Horizon.Sdk.Sf.Cmif;
using Ryujinx.Horizon.Sdk.Sm;
using System;
using System.Collections.Generic;
using System.Numerics;
namespace Ryujinx.Horizon.Sdk.Sf.Hipc
{
class ServerManager : ServerManagerBase, IDisposable
{
private readonly SmApi _sm;
private readonly int _pointerBufferSize;
private readonly bool _canDeferInvokeRequest;
private readonly int _maxSessions;
private ulong _pointerBuffersBaseAddress;
private ulong _savedMessagesBaseAddress;
private readonly object _resourceLock;
private readonly ulong[] _sessionAllocationBitmap;
private readonly HashSet<ServerSession> _sessions;
private readonly HashSet<Server> _servers;
public ServerManager(HeapAllocator allocator, SmApi sm, int maxPorts, ManagerOptions options, int maxSessions) : base(sm, options)
{
_sm = sm;
_pointerBufferSize = options.PointerBufferSize;
_canDeferInvokeRequest = options.CanDeferInvokeRequest;
_maxSessions = maxSessions;
if (allocator != null)
{
_pointerBuffersBaseAddress = allocator.Allocate((ulong)maxSessions * (ulong)options.PointerBufferSize);
if (options.CanDeferInvokeRequest)
{
_savedMessagesBaseAddress = allocator.Allocate((ulong)maxSessions * (ulong)Api.TlsMessageBufferSize);
}
}
_resourceLock = new object();
_sessionAllocationBitmap = new ulong[(maxSessions + 63) / 64];
_sessions = new HashSet<ServerSession>();
_servers = new HashSet<Server>();
}
private PointerAndSize GetObjectBySessionIndex(ServerSession session, ulong baseAddress, ulong size)
{
return new PointerAndSize(baseAddress + (ulong)session.SessionIndex * size, size);
}
protected override ServerSession AllocateSession(int sessionHandle, ServiceObjectHolder obj)
{
int sessionIndex = -1;
lock (_resourceLock)
{
if (_sessions.Count >= _maxSessions)
{
return null;
}
for (int i = 0; i <_sessionAllocationBitmap.Length; i++)
{
ref ulong mask = ref _sessionAllocationBitmap[i];
if (mask != ulong.MaxValue)
{
int bit = BitOperations.TrailingZeroCount(~mask);
sessionIndex = i * 64 + bit;
mask |= 1UL << bit;
break;
}
}
if (sessionIndex == -1)
{
return null;
}
ServerSession session = new(sessionIndex, sessionHandle, obj);
_sessions.Add(session);
return session;
}
}
protected override void FreeSession(ServerSession session)
{
if (session.ServiceObjectHolder.ServiceObject is IDisposable disposableObj)
{
disposableObj.Dispose();
}
lock (_resourceLock)
{
_sessionAllocationBitmap[session.SessionIndex / 64] &= ~(1UL << (session.SessionIndex & 63));
_sessions.Remove(session);
}
}
protected override Server AllocateServer(
int portIndex,
int portHandle,
ServiceName name,
bool managed,
ServiceObjectHolder staticHoder)
{
lock (_resourceLock)
{
Server server = new(portIndex, portHandle, name, managed, staticHoder);
_servers.Add(server);
return server;
}
}
protected override void DestroyServer(Server server)
{
lock (_resourceLock)
{
server.UnlinkFromMultiWaitHolder();
Os.FinalizeMultiWaitHolder(server);
if (server.Managed)
{
// We should AbortOnFailure, but sometimes SM is already gone when this is called,
// so let's just ignore potential errors.
_sm.UnregisterService(server.Name);
HorizonStatic.Syscall.CloseHandle(server.PortHandle);
}
_servers.Remove(server);
}
}
protected override PointerAndSize GetSessionPointerBuffer(ServerSession session)
{
if (_pointerBufferSize > 0)
{
return GetObjectBySessionIndex(session, _pointerBuffersBaseAddress, (ulong)_pointerBufferSize);
}
else
{
return PointerAndSize.Empty;
}
}
protected override PointerAndSize GetSessionSavedMessageBuffer(ServerSession session)
{
if (_canDeferInvokeRequest)
{
return GetObjectBySessionIndex(session, _savedMessagesBaseAddress, Api.TlsMessageBufferSize);
}
else
{
return PointerAndSize.Empty;
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
lock (_resourceLock)
{
ServerSession[] sessionsToClose = new ServerSession[_sessions.Count];
_sessions.CopyTo(sessionsToClose);
foreach (ServerSession session in sessionsToClose)
{
CloseSessionImpl(session);
}
Server[] serversToClose = new Server[_servers.Count];
_servers.CopyTo(serversToClose);
foreach (Server server in serversToClose)
{
DestroyServer(server);
}
}
}
}
public void Dispose()
{
Dispose(true);
}
}
}
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