Ryujinx/Ryujinx.HLE/HOS/Kernel/KernelContext.cs
gdkchan 48278905d1
Rewrite scheduler context switch code (#1786)
* Rewrite scheduler context switch code

* Fix race in UnmapIpcRestorePermission

* Fix thread exit issue that could leave the scheduler in a invalid state

* Change context switch method to not wait on guest thread, remove spin wait, use SignalAndWait to pass control

* Remove multi-core setting (it is always on now)

* Re-enable assert

* Remove multicore from default config and schema

* Fix race in KTimeManager
2020-12-09 19:20:05 -03:00

139 lines
4.3 KiB
C#

using Ryujinx.HLE.HOS.Kernel.Common;
using Ryujinx.HLE.HOS.Kernel.Memory;
using Ryujinx.HLE.HOS.Kernel.Process;
using Ryujinx.HLE.HOS.Kernel.SupervisorCall;
using Ryujinx.HLE.HOS.Kernel.Threading;
using Ryujinx.Memory;
using System;
using System.Collections.Concurrent;
using System.Threading;
namespace Ryujinx.HLE.HOS.Kernel
{
class KernelContext : IDisposable
{
public long PrivilegedProcessLowestId { get; set; } = 1;
public long PrivilegedProcessHighestId { get; set; } = 8;
public bool EnableVersionChecks { get; set; }
public bool KernelInitialized { get; }
public bool Running { get; private set; }
public Switch Device { get; }
public MemoryBlock Memory { get; }
public Syscall Syscall { get; }
public SyscallHandler SyscallHandler { get; }
public KResourceLimit ResourceLimit { get; }
public KMemoryRegionManager[] MemoryRegions { get; }
public KMemoryBlockAllocator LargeMemoryBlockAllocator { get; }
public KMemoryBlockAllocator SmallMemoryBlockAllocator { get; }
public KSlabHeap UserSlabHeapPages { get; }
public KCriticalSection CriticalSection { get; }
public KScheduler[] Schedulers { get; }
public KPriorityQueue PriorityQueue { get; }
public KTimeManager TimeManager { get; }
public KSynchronization Synchronization { get; }
public KContextIdManager ContextIdManager { get; }
public ConcurrentDictionary<long, KProcess> Processes { get; }
public ConcurrentDictionary<string, KAutoObject> AutoObjectNames { get; }
public bool ThreadReselectionRequested { get; set; }
private long _kipId;
private long _processId;
private long _threadUid;
public KernelContext(Switch device, MemoryBlock memory)
{
Device = device;
Memory = memory;
Running = true;
Syscall = new Syscall(this);
SyscallHandler = new SyscallHandler(this);
ResourceLimit = new KResourceLimit(this);
KernelInit.InitializeResourceLimit(ResourceLimit);
MemoryRegions = KernelInit.GetMemoryRegions();
LargeMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize * 2);
SmallMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize);
UserSlabHeapPages = new KSlabHeap(
KernelConstants.UserSlabHeapBase,
KernelConstants.UserSlabHeapItemSize,
KernelConstants.UserSlabHeapSize);
CriticalSection = new KCriticalSection(this);
Schedulers = new KScheduler[KScheduler.CpuCoresCount];
PriorityQueue = new KPriorityQueue();
TimeManager = new KTimeManager(this);
Synchronization = new KSynchronization(this);
ContextIdManager = new KContextIdManager();
for (int core = 0; core < KScheduler.CpuCoresCount; core++)
{
Schedulers[core] = new KScheduler(this, core);
}
StartPreemptionThread();
KernelInitialized = true;
Processes = new ConcurrentDictionary<long, KProcess>();
AutoObjectNames = new ConcurrentDictionary<string, KAutoObject>();
_kipId = KernelConstants.InitialKipId;
_processId = KernelConstants.InitialProcessId;
}
private void StartPreemptionThread()
{
void PreemptionThreadStart()
{
KScheduler.PreemptionThreadLoop(this);
}
new Thread(PreemptionThreadStart) { Name = "HLE.PreemptionThread" }.Start();
}
public long NewThreadUid()
{
return Interlocked.Increment(ref _threadUid) - 1;
}
public long NewKipId()
{
return Interlocked.Increment(ref _kipId) - 1;
}
public long NewProcessId()
{
return Interlocked.Increment(ref _processId) - 1;
}
public void Dispose()
{
Running = false;
for (int i = 0; i < KScheduler.CpuCoresCount; i++)
{
Schedulers[i].Dispose();
}
TimeManager.Dispose();
}
}
}