コード例 #1
0
        private KernelResult StartThread(int handle)
        {
            KThread thread = _process.HandleTable.GetKThread(handle);

            if (thread != null)
            {
                thread.IncrementReferenceCount();

                KernelResult result = thread.Start();

                if (result == KernelResult.Success)
                {
                    thread.IncrementReferenceCount();
                }

                thread.DecrementReferenceCount();

                return(result);
            }
            else
            {
                return(KernelResult.InvalidHandle);
            }
        }
コード例 #2
0
ファイル: KProcess.cs プロジェクト: thejonwong/Ryujinx
        public KernelResult Start(int mainThreadPriority, ulong stackSize)
        {
            lock (_processLock)
            {
                if (_state > ProcessState.CreatedAttached)
                {
                    return(KernelResult.InvalidState);
                }

                if (ResourceLimit != null && !ResourceLimit.Reserve(LimitableResource.Thread, 1))
                {
                    return(KernelResult.ResLimitExceeded);
                }

                KResourceLimit threadResourceLimit = ResourceLimit;
                KResourceLimit memoryResourceLimit = null;

                if (_mainThreadStackSize != 0)
                {
                    throw new InvalidOperationException("Trying to start a process with a invalid state!");
                }

                ulong stackSizeRounded = BitUtils.AlignUp(stackSize, KMemoryManager.PageSize);

                ulong neededSize = stackSizeRounded + _imageSize;

                // Check if the needed size for the code and the stack will fit on the
                // memory usage capacity of this Process. Also check for possible overflow
                // on the above addition.
                if (neededSize > _memoryUsageCapacity ||
                    neededSize < stackSizeRounded)
                {
                    threadResourceLimit?.Release(LimitableResource.Thread, 1);

                    return(KernelResult.OutOfMemory);
                }

                if (stackSizeRounded != 0 && ResourceLimit != null)
                {
                    memoryResourceLimit = ResourceLimit;

                    if (!memoryResourceLimit.Reserve(LimitableResource.Memory, stackSizeRounded))
                    {
                        threadResourceLimit?.Release(LimitableResource.Thread, 1);

                        return(KernelResult.ResLimitExceeded);
                    }
                }

                KernelResult result;

                KThread mainThread = null;

                ulong stackTop = 0;

                void CleanUpForError()
                {
                    HandleTable.Destroy();

                    mainThread?.DecrementReferenceCount();

                    if (_mainThreadStackSize != 0)
                    {
                        ulong stackBottom = stackTop - _mainThreadStackSize;

                        ulong stackPagesCount = _mainThreadStackSize / KMemoryManager.PageSize;

                        MemoryManager.UnmapForKernel(stackBottom, stackPagesCount, MemoryState.Stack);

                        _mainThreadStackSize = 0;
                    }

                    memoryResourceLimit?.Release(LimitableResource.Memory, stackSizeRounded);
                    threadResourceLimit?.Release(LimitableResource.Thread, 1);
                }

                if (stackSizeRounded != 0)
                {
                    ulong stackPagesCount = stackSizeRounded / KMemoryManager.PageSize;

                    ulong regionStart = MemoryManager.StackRegionStart;
                    ulong regionSize  = MemoryManager.StackRegionEnd - regionStart;

                    ulong regionPagesCount = regionSize / KMemoryManager.PageSize;

                    result = MemoryManager.AllocateOrMapPa(
                        stackPagesCount,
                        KMemoryManager.PageSize,
                        0,
                        false,
                        regionStart,
                        regionPagesCount,
                        MemoryState.Stack,
                        MemoryPermission.ReadAndWrite,
                        out ulong stackBottom);

                    if (result != KernelResult.Success)
                    {
                        CleanUpForError();

                        return(result);
                    }

                    _mainThreadStackSize += stackSizeRounded;

                    stackTop = stackBottom + stackSizeRounded;
                }

                ulong heapCapacity = _memoryUsageCapacity - _mainThreadStackSize - _imageSize;

                result = MemoryManager.SetHeapCapacity(heapCapacity);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                HandleTable = new KHandleTable(System);

                result = HandleTable.Initialize(Capabilities.HandleTableSize);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                mainThread = new KThread(System);

                result = mainThread.Initialize(
                    _entrypoint,
                    0,
                    stackTop,
                    mainThreadPriority,
                    DefaultCpuCore,
                    this);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                result = HandleTable.GenerateHandle(mainThread, out int mainThreadHandle);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                mainThread.SetEntryArguments(0, mainThreadHandle);

                ProcessState oldState = _state;
                ProcessState newState = _state != ProcessState.Created
                    ? ProcessState.Attached
                    : ProcessState.Started;

                SetState(newState);

                // TODO: We can't call KThread.Start from a non-guest thread.
                // We will need to make some changes to allow the creation of
                // dummy threads that will be used to initialize the current
                // thread on KCoreContext so that GetCurrentThread doesn't fail.

                /* Result = MainThread.Start();
                 *
                 * if (Result != KernelResult.Success)
                 * {
                 *  SetState(OldState);
                 *
                 *  CleanUpForError();
                 * } */

                mainThread.Reschedule(ThreadSchedState.Running);

                if (result == KernelResult.Success)
                {
                    mainThread.IncrementReferenceCount();
                }

                mainThread.DecrementReferenceCount();

                return(result);
            }
        }
コード例 #3
0
        public KernelResult Start(int mainThreadPriority, ulong stackSize)
        {
            lock (_processLock)
            {
                if (State > ProcessState.CreatedAttached)
                {
                    return(KernelResult.InvalidState);
                }

                if (ResourceLimit != null && !ResourceLimit.Reserve(LimitableResource.Thread, 1))
                {
                    return(KernelResult.ResLimitExceeded);
                }

                KResourceLimit threadResourceLimit = ResourceLimit;
                KResourceLimit memoryResourceLimit = null;

                if (_mainThreadStackSize != 0)
                {
                    throw new InvalidOperationException("Trying to start a process with a invalid state!");
                }

                ulong stackSizeRounded = BitUtils.AlignUp(stackSize, KPageTableBase.PageSize);

                ulong neededSize = stackSizeRounded + _imageSize;

                // Check if the needed size for the code and the stack will fit on the
                // memory usage capacity of this Process. Also check for possible overflow
                // on the above addition.
                if (neededSize > _memoryUsageCapacity || neededSize < stackSizeRounded)
                {
                    threadResourceLimit?.Release(LimitableResource.Thread, 1);

                    return(KernelResult.OutOfMemory);
                }

                if (stackSizeRounded != 0 && ResourceLimit != null)
                {
                    memoryResourceLimit = ResourceLimit;

                    if (!memoryResourceLimit.Reserve(LimitableResource.Memory, stackSizeRounded))
                    {
                        threadResourceLimit?.Release(LimitableResource.Thread, 1);

                        return(KernelResult.ResLimitExceeded);
                    }
                }

                KernelResult result;

                KThread mainThread = null;

                ulong stackTop = 0;

                void CleanUpForError()
                {
                    HandleTable.Destroy();

                    mainThread?.DecrementReferenceCount();

                    if (_mainThreadStackSize != 0)
                    {
                        ulong stackBottom = stackTop - _mainThreadStackSize;

                        ulong stackPagesCount = _mainThreadStackSize / KPageTableBase.PageSize;

                        MemoryManager.UnmapForKernel(stackBottom, stackPagesCount, MemoryState.Stack);

                        _mainThreadStackSize = 0;
                    }

                    memoryResourceLimit?.Release(LimitableResource.Memory, stackSizeRounded);
                    threadResourceLimit?.Release(LimitableResource.Thread, 1);
                }

                if (stackSizeRounded != 0)
                {
                    ulong stackPagesCount = stackSizeRounded / KPageTableBase.PageSize;

                    ulong regionStart = MemoryManager.StackRegionStart;
                    ulong regionSize  = MemoryManager.StackRegionEnd - regionStart;

                    ulong regionPagesCount = regionSize / KPageTableBase.PageSize;

                    result = MemoryManager.MapPages(
                        stackPagesCount,
                        KPageTableBase.PageSize,
                        0,
                        false,
                        regionStart,
                        regionPagesCount,
                        MemoryState.Stack,
                        KMemoryPermission.ReadAndWrite,
                        out ulong stackBottom);

                    if (result != KernelResult.Success)
                    {
                        CleanUpForError();

                        return(result);
                    }

                    _mainThreadStackSize += stackSizeRounded;

                    stackTop = stackBottom + stackSizeRounded;
                }

                ulong heapCapacity = _memoryUsageCapacity - _mainThreadStackSize - _imageSize;

                result = MemoryManager.SetHeapCapacity(heapCapacity);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                HandleTable = new KHandleTable(KernelContext);

                result = HandleTable.Initialize(Capabilities.HandleTableSize);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                mainThread = new KThread(KernelContext);

                result = mainThread.Initialize(
                    _entrypoint,
                    0,
                    stackTop,
                    mainThreadPriority,
                    DefaultCpuCore,
                    this,
                    ThreadType.User,
                    _customThreadStart);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                result = HandleTable.GenerateHandle(mainThread, out int mainThreadHandle);

                if (result != KernelResult.Success)
                {
                    CleanUpForError();

                    return(result);
                }

                mainThread.SetEntryArguments(0, mainThreadHandle);

                ProcessState oldState = State;
                ProcessState newState = State != ProcessState.Created
                    ? ProcessState.Attached
                    : ProcessState.Started;

                SetState(newState);

                result = mainThread.Start();

                if (result != KernelResult.Success)
                {
                    SetState(oldState);

                    CleanUpForError();
                }

                if (result == KernelResult.Success)
                {
                    mainThread.IncrementReferenceCount();
                }

                mainThread.DecrementReferenceCount();

                return(result);
            }
        }