private unsafe FileVersionInfo(string fileName)
{
_fileName = fileName;
uint infoSize = Interop.Version.GetFileVersionInfoSizeEx(Interop.Version.FileVersionInfoType.FILE_VER_GET_LOCALISED, _fileName, out _);
if (infoSize != 0)
{
void *memPtr = NativeMemory.Alloc(infoSize);
try
{
if (Interop.Version.GetFileVersionInfoEx(
Interop.Version.FileVersionInfoType.FILE_VER_GET_LOCALISED | Interop.Version.FileVersionInfoType.FILE_VER_GET_NEUTRAL,
_fileName,
0U,
infoSize,
memPtr))
{
// Some dlls might not contain correct codepage information, in which case the lookup will fail. Explorer will take
// a few shots in dark. We'll simulate similar behavior by falling back to the following lang-codepages.
uint lcp = GetLanguageAndCodePage(memPtr);
_ = GetVersionInfoForCodePage(memPtr, lcp.ToString("X8")) ||
(lcp != 0x040904B0 && GetVersionInfoForCodePage(memPtr, "040904B0")) || // US English + CP_UNICODE
(lcp != 0x040904E4 && GetVersionInfoForCodePage(memPtr, "040904E4")) || // US English + CP_USASCII
(lcp != 0x04090000 && GetVersionInfoForCodePage(memPtr, "04090000")); // US English + unknown codepage
}
}
finally
{
NativeMemory.Free(memPtr);
}
}
}
/// <summary>
/// Initialize the marshaller with a managed string and requested buffer.
/// </summary>
/// <param name="managed">The managed string</param>
/// <param name="buffer">A request buffer of at least size, <see cref="BufferSize"/>.</param>
public void FromManaged(string?managed, Span <byte> buffer)
{
_allocated = false;
if (managed is null)
{
_unmanagedValue = null;
return;
}
// >= for null terminator
// Use the cast to long to avoid the checked operation
if ((long)Marshal.SystemMaxDBCSCharSize * managed.Length >= buffer.Length)
{
// Calculate accurate byte count when the provided stack-allocated buffer is not sufficient
int exactByteCount = Marshal.GetAnsiStringByteCount(managed); // Includes null terminator
if (exactByteCount > buffer.Length)
{
buffer = new Span <byte>((byte *)NativeMemory.Alloc((nuint)exactByteCount), exactByteCount);
_allocated = true;
}
}
_unmanagedValue = (byte *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(buffer));
Marshal.GetAnsiStringBytes(managed, buffer); // Includes null terminator
}
/// <summary>
/// The factory method for <see cref="ID2D1Factory1.RegisterEffectFromString"/>.
/// </summary>
/// <param name="shaderId">The <see cref="Guid"/> for the shader.</param>
/// <param name="numberOfInputs">The number of inputs for the shader.</param>
/// <param name="bytecode">The shader bytecode.</param>
/// <param name="bytecodeSize">The size of <paramref name="bytecode"/>.</param>
/// <param name="d2D1TransformMapper">The <see cref="D2D1TransformMapper"/> instance to use for the effect.</param>
/// <param name="effectImpl">The resulting effect instance.</param>
/// <returns>This always returns <c>0</c>.</returns>
private static int Factory(
Guid shaderId,
int numberOfInputs,
byte *bytecode,
int bytecodeSize,
D2D1TransformMapper?d2D1TransformMapper,
IUnknown **effectImpl)
{
PixelShaderEffect * @this = (PixelShaderEffect *)NativeMemory.Alloc((nuint)sizeof(PixelShaderEffect));
*@this = default;
@this->lpVtblForID2D1EffectImpl = VtblForID2D1EffectImpl;
@this->lpVtblForID2D1DrawTransform = VtblForID2D1DrawTransform;
@this->referenceCount = 1;
@this->shaderId = shaderId;
@this->numberOfInputs = numberOfInputs;
@this->bytecode = bytecode;
@this->bytecodeSize = bytecodeSize;
@this->d2D1TransformMapperHandle = GCHandle.Alloc(d2D1TransformMapper);
*effectImpl = (IUnknown *)@this;
return(S.S_OK);
}
public PixelZone(int row, int column, int xMin, int xMax, int yMin, int yMax, int stride, int bitDepth, PixelZonesTotals totals, int totalsIndex)
{
Row = row;
Column = column;
TopLeft = new Point(xMin, yMin);
BottomRight = new Point(xMax, yMax);
Width = BottomRight.X - TopLeft.X;
Height = BottomRight.Y - TopLeft.Y;
TotalR = totals.TotalR + totalsIndex;
TotalG = totals.TotalG + totalsIndex;
TotalB = totals.TotalB + totalsIndex;
Count = totals.Count + totalsIndex;
AvgR = totals.AvgR + totalsIndex;
AvgG = totals.AvgG + totalsIndex;
AvgB = totals.AvgB + totalsIndex;
//The zones cover a rectangular area of the image, but the images are stored in a sequential array, so we need to have a range
// for each y coordinate that the rectangle covers.
nuint bytesLength = (nuint)(sizeof(ZonePixelRange) * Height);
PixelRanges = (ZonePixelRange *)NativeMemory.Alloc(bytesLength);
for (int y = TopLeft.Y, i = 0; y < BottomRight.Y; ++y, ++i)
{
var start = GetImageCoordinate(stride, TopLeft.X, y, bitDepth);
var length = GetImageCoordinate(stride, BottomRight.X, y, bitDepth) - start;
PixelRanges[i] = new ZonePixelRange(start, length);
}
}
public void AllocZeroByteCountTest()
{
void *ptr = NativeMemory.Alloc(0);
Assert.True(ptr != null);
NativeMemory.Free(ptr);
}
/// <summary>
/// Initializes the marshaller with a managed string and requested buffer.
/// </summary>
/// <param name="managed">The managed string with which to initialize the marshaller.</param>
/// <param name="buffer">The request buffer whose size is at least <see cref="BufferSize"/>.</param>
public void FromManaged(string?managed, Span <byte> buffer)
{
_allocated = false;
if (managed is null)
{
_unmanagedValue = null;
return;
}
const int MaxUtf8BytesPerChar = 3;
// >= for null terminator
// Use the cast to long to avoid the checked operation
if ((long)MaxUtf8BytesPerChar * managed.Length >= buffer.Length)
{
// Calculate accurate byte count when the provided stack-allocated buffer is not sufficient
int exactByteCount = checked (Encoding.UTF8.GetByteCount(managed) + 1); // + 1 for null terminator
if (exactByteCount > buffer.Length)
{
buffer = new Span <byte>((byte *)NativeMemory.Alloc((nuint)exactByteCount), exactByteCount);
_allocated = true;
}
}
_unmanagedValue = (byte *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(buffer));
int byteCount = Encoding.UTF8.GetBytes(managed, buffer);
buffer[byteCount] = 0; // null-terminate
}
public void AllocZeroElementCountTest()
{
void *ptr = NativeMemory.Alloc(0, 1);
Assert.True(ptr != null);
NativeMemory.Free(ptr);
}
private static unsafe void AllocNullTerminatedArray(string[] arr, ref byte **arrPtr)
{
nuint arrLength = (nuint)arr.Length + 1; // +1 is for null termination
// Allocate the unmanaged array to hold each string pointer.
// It needs to have an extra element to null terminate the array.
// Zero the memory so that if any of the individual string allocations fails,
// we can loop through the array to free any that succeeded.
// The last element will remain null.
arrPtr = (byte **)NativeMemory.AllocZeroed(arrLength, (nuint)sizeof(byte *));
// Now copy each string to unmanaged memory referenced from the array.
// We need the data to be an unmanaged, null-terminated array of UTF8-encoded bytes.
for (int i = 0; i < arr.Length; i++)
{
string str = arr[i];
int byteLength = Encoding.UTF8.GetByteCount(str);
arrPtr[i] = (byte *)NativeMemory.Alloc((nuint)byteLength + 1); //+1 for null termination
int bytesWritten = Encoding.UTF8.GetBytes(str, new Span <byte>(arrPtr[i], byteLength));
Debug.Assert(bytesWritten == byteLength);
arrPtr[i][bytesWritten] = (byte)'\0'; // null terminate
}
}
public void AllocZeroElementSizeTest()
{
void *ptr = NativeMemory.Alloc(1, 0);
Assert.True(ptr != null);
NativeMemory.Free(ptr);
}
public void NativeLibTest()
{
const nuint i = 256;
var a = NativeMemory.Alloc(i);
Assert.AreEqual(Mem._msize(a), i);
}
/// <summary>
/// Creates and initializes a new <see cref="ID3DIncludeForD2DHelpers"/> instance.
/// </summary>
/// <returns>A pointer to a new <see cref="ID3DIncludeForD2DHelpers"/> instance.</returns>
public static ID3DIncludeForD2DHelpers *Create()
{
ID3DIncludeForD2DHelpers * @this = (ID3DIncludeForD2DHelpers *)NativeMemory.Alloc((nuint)sizeof(ID3DIncludeForD2DHelpers));
@this->lpVtbl = Vtbl;
return(@this);
}
// From the same source:
// "Each buffer must be at least the size of a system memory page and must be aligned on a system
// memory page size boundary. The system reads/writes one system memory page of data into/from each buffer."
// This method returns true if the buffers can be used by
// the Windows scatter/gather API, which happens when they are:
// 1. aligned at page size boundaries
// 2. exactly one page long each (our own requirement to prevent partial reads)
// 3. not bigger than 2^32 - 1 in total
// This function is also responsible for pinning the buffers if they
// are suitable and they must be unpinned after the I/O operation completes.
// It also returns a pointer with the segments to be passed to the
// Windows API, and the total size of the buffers that is needed as well.
// The pinned MemoryHandles and the pointer to the segments must be cleaned-up
// with the CleanupScatterGatherBuffers method.
private static unsafe bool TryPrepareScatterGatherBuffers <T, THandler>(IReadOnlyList <T> buffers,
THandler handler, out MemoryHandle[] handlesToDispose, out IntPtr segmentsPtr, out int totalBytes)
where THandler : struct, IMemoryHandler <T>
{
int pageSize = s_cachedPageSize;
Debug.Assert(BitOperations.IsPow2(pageSize), "Page size is not a power of two.");
// We take advantage of the fact that the page size is
// a power of two to avoid an expensive modulo operation.
long alignedAtPageSizeMask = pageSize - 1;
int buffersCount = buffers.Count;
handlesToDispose = new MemoryHandle[buffersCount];
segmentsPtr = IntPtr.Zero;
totalBytes = 0;
// "The array must contain enough elements to store nNumberOfBytesToWrite bytes of data, and one element for the terminating NULL. "
long *segments = (long *)NativeMemory.Alloc((nuint)(buffersCount + 1), sizeof(long));
segments[buffersCount] = 0;
bool success = false;
try
{
long totalBytes64 = 0;
for (int i = 0; i < buffersCount; i++)
{
T buffer = buffers[i];
int length = handler.GetLength(in buffer);
totalBytes64 += length;
if (length != pageSize || totalBytes64 > int.MaxValue)
{
return(false);
}
MemoryHandle handle = handlesToDispose[i] = handler.Pin(in buffer);
long ptr = segments[i] = (long)handle.Pointer;
if ((ptr & alignedAtPageSizeMask) != 0)
{
return(false);
}
}
segmentsPtr = (IntPtr)segments;
totalBytes = (int)totalBytes64;
success = true;
return(true);
}
finally
{
if (!success)
{
CleanupScatterGatherBuffers(handlesToDispose, (IntPtr)segments);
}
}
}
public void TestNativeAlloc()
{
for (var i = 0; i < IterCount; i++)
{
var p = (byte *)NativeMemory.Alloc((nuint)Size);
Consume(&p);
NativeMemory.Free(p);
}
}
private void Resize()
{
int newCapacity = data->capacity * 2;
byte *newArr = NativeMemory.Alloc(data->structSize * newCapacity, NativeMemory.NativeMemoryType.RawList);
NativeMemory.Copy(newArr, data->arrayPtr, data->structSize * data->capacity);
NativeMemory.Free(data->arrayPtr);
data->arrayPtr = newArr;
data->capacity = newCapacity;
}
/**
* Allocates 128 byte aligned memory block for binary serialized data
* Stores pointer to memory in gMemBlocks for later deallocation
*/
static void *createAlignedBlock(uint size)
{
Debug.Assert(gMemBlockCount < MAX_MEMBLOCKS);
byte *baseAddr = (byte *)NativeMemory.Alloc(size + PX_SERIAL_FILE_ALIGN - 1);
gMemBlocks[gMemBlockCount++] = baseAddr;
void *alignedBlock = (void *)(((nint)(baseAddr) + PX_SERIAL_FILE_ALIGN - 1) & ~(PX_SERIAL_FILE_ALIGN - 1));
return(alignedBlock);
}
private void Reserve(int count)
{
if (_handles.Length < count)
{
_handles = new MemoryHandle[count];
FreeNativeMemory();
_buffers = (QUIC_BUFFER *)NativeMemory.Alloc((nuint)count, (nuint)sizeof(QUIC_BUFFER));
}
_count = count;
}
public void ReallocZeroSizeTest()
{
void *ptr = NativeMemory.Alloc(1);
Assert.True(ptr != null);
void *newPtr = NativeMemory.Realloc(ptr, 0);
Assert.True(newPtr != null);
NativeMemory.Free(newPtr);
}
public static unsafe IntPtr GetGenericMethodFunctionPointer(IntPtr canonFunctionPointer, IntPtr instantiationArgument)
{
if (instantiationArgument == IntPtr.Zero)
{
return(canonFunctionPointer);
}
lock (s_genericFunctionPointerDictionary)
{
var key = new GenericMethodDescriptorInfo
{
MethodFunctionPointer = canonFunctionPointer,
InstantiationArgument = instantiationArgument
};
uint index = 0;
if (!s_genericFunctionPointerDictionary.TryGetValue(key, out index))
{
// Capture new index value
index = s_genericFunctionPointerNextIndex;
int newChunkIndex = (int)(index / c_genericDictionaryChunkSize);
uint newSubChunkIndex = index % c_genericDictionaryChunkSize;
// Generate new chunk if existing chunks are insufficient
if (s_genericFunctionPointerCollection.Count <= newChunkIndex)
{
System.Diagnostics.Debug.Assert(newSubChunkIndex == 0);
// New generic descriptors are allocated on the native heap and not tracked in the GC.
IntPtr pNewMem = (IntPtr)NativeMemory.Alloc(c_genericDictionaryChunkSize, (nuint)sizeof(GenericMethodDescriptor));
s_genericFunctionPointerCollection.Add(pNewMem);
}
((GenericMethodDescriptor *)s_genericFunctionPointerCollection[newChunkIndex])[newSubChunkIndex] =
new GenericMethodDescriptor(canonFunctionPointer, instantiationArgument);
s_genericFunctionPointerDictionary.LookupOrAdd(key, index);
// Now that we can no longer have failed, update the next index.
s_genericFunctionPointerNextIndex++;
}
// Lookup within list
int chunkIndex = (int)(index / c_genericDictionaryChunkSize);
uint subChunkIndex = index % c_genericDictionaryChunkSize;
GenericMethodDescriptor *genericFunctionPointer = &((GenericMethodDescriptor *)s_genericFunctionPointerCollection[chunkIndex])[subChunkIndex];
System.Diagnostics.Debug.Assert(canonFunctionPointer == genericFunctionPointer->MethodFunctionPointer);
System.Diagnostics.Debug.Assert(instantiationArgument == genericFunctionPointer->InstantiationArgument);
return((IntPtr)((byte *)genericFunctionPointer + FatFunctionPointerOffset));
}
}
public IOCompletionPoller(nint port)
{
Debug.Assert(port != 0);
_port = port;
if (!UnsafeInlineIOCompletionCallbacks)
{
_nativeEvents =
(Interop.Kernel32.OVERLAPPED_ENTRY *)
NativeMemory.Alloc(NativeEventCapacity, (nuint)sizeof(Interop.Kernel32.OVERLAPPED_ENTRY));
_events = new(default);
/// <summary>
/// Creates and initializes a new <see cref="IDXGIFactory4As6Backcompat"/> instance.
/// </summary>
/// <param name="dxgiFactory4">The <see cref="IDXGIFactory4"/> instance to wrap.</param>
/// <param name="dxgiFactory6">The resulting <see cref="IDXGIFactory6"/> instance.</param>
public static void Create(IDXGIFactory4 *dxgiFactory4, IDXGIFactory6 **dxgiFactory6)
{
IDXGIFactory4As6Backcompat * @this = (IDXGIFactory4As6Backcompat *)NativeMemory.Alloc((nuint)sizeof(IDXGIFactory4As6Backcompat));
@this->lpVtbl = Vtbl;
@this->dxgiFactory4 = dxgiFactory4;
_ = dxgiFactory4->AddRef();
*dxgiFactory6 = (IDXGIFactory6 *)@this;
}
public MessageBufferHG(MessageBufferHG right)
{
_wpos = right._wpos;
_rpos = right._rpos;
_size = right._size;
_capacity = BitOperations.RoundUpToPowerOf2((uint)_size);
_storage = NativeMemory.Alloc(_capacity);
Buffer.MemoryCopy(right._storage, _storage, (ulong)_size, (ulong)_size);
}
public MessageBufferHG(int initialSize)
{
if (initialSize <= 0)
{
throw new ArgumentOutOfRangeException(nameof(initialSize));
}
_size = initialSize;
_capacity = BitOperations.RoundUpToPowerOf2((uint)_size);
_storage = NativeMemory.Alloc(_capacity);
}
public NativeList(int capacity = 10)
{
if (capacity < 1)
{
capacity = 1;
}
data = (NativeListData *)NativeMemory.Alloc(NativeListData.SIZE, NativeMemory.NativeMemoryType.RawList);
data->structSize = Marshal.SizeOf <NativeListData>();
data->capacity = capacity;
data->length = 0;
data->arrayPtr = NativeMemory.Alloc(data->structSize * data->capacity, NativeMemory.NativeMemoryType.RawList);
}
/// <summary>
/// 在指定地址创建对象
/// </summary>
/// <param name="ptr"></param>
/// <returns></returns>
public static T Create(void *ptr = null)
{
if (ptr == null)
ptr = NativeMemory.Alloc(size);
fixed(void *headerPtr = header) Buffer.MemoryCopy(headerPtr, ptr, header.Length, header.Length);
T ret = cast2T(new IntPtr(ptr));
ret.SetPtr(ptr);
return(ret);
}
public PixelZonesTotals(int length)
{
_length = length;
nuint bytesLength = (nuint)(sizeof(int) * length);
TotalR = (int *)NativeMemory.Alloc(bytesLength);
TotalG = (int *)NativeMemory.Alloc(bytesLength);
TotalB = (int *)NativeMemory.Alloc(bytesLength);
Count = (int *)NativeMemory.Alloc(bytesLength);
AvgR = (int *)NativeMemory.Alloc(bytesLength);
AvgG = (int *)NativeMemory.Alloc(bytesLength);
AvgB = (int *)NativeMemory.Alloc(bytesLength);
}
public static SKBitmap?Decode(this UTexture2D texture, FTexture2DMipMap?mip, ETexturePlatform platform = ETexturePlatform.DesktopMobile)
{
if (!texture.IsVirtual && mip != null)
{
byte[] data;
SKColorType colorType;
switch (platform)
{
case ETexturePlatform.Playstation:
PlaystationDecoder.DecodeTexturePlaystation(mip, texture.Format, texture.isNormalMap, out data, out colorType);
break;
case ETexturePlatform.NintendoSwitch:
NintendoSwitchDecoder.DecodeTextureNSW(mip, texture.Format, texture.isNormalMap, out data, out colorType);
break;
default:
DecodeTexture(mip, texture.Format, texture.isNormalMap, out data, out colorType);
break;
}
var width = mip.SizeX;
var height = mip.SizeY;
var info = new SKImageInfo(width, height, colorType, SKAlphaType.Unpremul);
var bitmap = new SKBitmap();
unsafe
{
var pixelsPtr = NativeMemory.Alloc((nuint)data.Length);
fixed(byte *p = data)
{
Unsafe.CopyBlockUnaligned(pixelsPtr, p, (uint)data.Length);
}
bitmap.InstallPixels(info, new IntPtr(pixelsPtr), info.RowBytes, (address, _) => NativeMemory.Free(address.ToPointer()));
}
if (!texture.bRenderNearestNeighbor)
{
return(bitmap);
}
var resized = bitmap.Resize(new SKImageInfo(width, height), SKFilterQuality.None);
bitmap.Dispose();
return(resized);
}
return(null);
}
public unsafe IntPtr ToIntPtr()
{
lock (s_internedResolverHash)
{
IntPtr returnValue;
if (s_internedResolverHash.TryGetValue(this, out returnValue))
{
return(returnValue);
}
returnValue = (IntPtr)NativeMemory.Alloc((nuint)sizeof(OpenMethodResolver));
*((OpenMethodResolver *)returnValue) = this;
s_internedResolverHash.Add(this, returnValue);
return(returnValue);
}
}
/// <summary>
/// The factory method for <see cref="ID2D1Factory1.RegisterEffectFromString"/>.
/// </summary>
/// <param name="shaderId">The <see cref="Guid"/> for the shader.</param>
/// <param name="inputCount">The number of inputs for the shader.</param>
/// <param name="inputTypes">The buffer with the types of inputs for the shader.</param>
/// <param name="inputDescriptionCount">The number of available input descriptions.</param>
/// <param name="inputDescriptions">The buffer with the available input descriptions for the shader.</param>
/// <param name="pixelOptions">The pixel options for the shader.</param>
/// <param name="bytecode">The shader bytecode.</param>
/// <param name="bytecodeSize">The size of <paramref name="bytecode"/>.</param>
/// <param name="bufferPrecision">The buffer precision for the resulting output buffer.</param>
/// <param name="channelDepth">The channel depth for the resulting output buffer.</param>
/// <param name="d2D1TransformMapper">The <see cref="D2D1TransformMapper"/> instance to use for the effect.</param>
/// <param name="effectImpl">The resulting effect instance.</param>
/// <returns>This always returns <c>0</c>.</returns>
private static int Factory(
Guid shaderId,
int inputCount,
D2D1PixelShaderInputType *inputTypes,
int inputDescriptionCount,
D2D1InputDescription *inputDescriptions,
D2D1PixelOptions pixelOptions,
byte *bytecode,
int bytecodeSize,
D2D1BufferPrecision bufferPrecision,
D2D1ChannelDepth channelDepth,
D2D1TransformMapper?d2D1TransformMapper,
IUnknown **effectImpl)
{
PixelShaderEffect * @this;
try
{
@this = (PixelShaderEffect *)NativeMemory.Alloc((nuint)sizeof(PixelShaderEffect));
}
catch (OutOfMemoryException)
{
*effectImpl = null;
return(E.E_OUTOFMEMORY);
}
*@this = default;
@this->lpVtblForID2D1EffectImpl = VtblForID2D1EffectImpl;
@this->lpVtblForID2D1DrawTransform = VtblForID2D1DrawTransform;
@this->referenceCount = 1;
@this->shaderId = shaderId;
@this->inputCount = inputCount;
@this->inputTypes = inputTypes;
@this->inputDescriptionCount = inputDescriptionCount;
@this->inputDescriptions = inputDescriptions;
@this->pixelOptions = pixelOptions;
@this->bytecode = bytecode;
@this->bytecodeSize = bytecodeSize;
@this->bufferPrecision = bufferPrecision;
@this->channelDepth = channelDepth;
@this->d2D1TransformMapperHandle = GCHandle.Alloc(d2D1TransformMapper);
*effectImpl = (IUnknown *)@this;
return(S.S_OK);
}
public static int SetConstantBuffer(IUnknown *effect, byte *data, uint dataSize)
{
PixelShaderEffect * @this = (PixelShaderEffect *)effect;
if (@this->constantBuffer is not null)
{
NativeMemory.Free(@this->constantBuffer);
}
void *buffer = NativeMemory.Alloc(dataSize);
Buffer.MemoryCopy(data, buffer, dataSize, dataSize);
@this->constantBuffer = (byte *)buffer;
@this->constantBufferSize = (int)dataSize;
return(S.S_OK);
}
public static bool HashData(string str, Span <byte> destination, out int byteCount)
{
var count = Encoding.UTF8.GetByteCount(str);
void *buff = NativeMemory.Alloc((uint)count);
Span <byte> dataSpan = new Span <byte>(buff, count);
Encoding.UTF8.GetBytes(str, dataSpan);
try
{
return(HashData(dataSpan, destination, out byteCount));
}
finally
{
NativeMemory.Free(buff);
}
}
