public unsafe void ShaderWithAssemblyLevelAttributesAndOverriddenOptions()
{
ReadOnlyMemory <byte> bytecode = D2D1PixelShader.LoadBytecode <ShaderWithOverriddenOptions>();
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager(bytecode, out MemoryManager <byte>?manager));
Assert.AreEqual("PinnedBufferMemoryManager", manager !.GetType().Name);
D2D1PixelShader.LoadBytecode <ShaderWithOverriddenOptions>(
shaderProfile: D2D1ShaderProfile.PixelShader41,
options: D2D1CompileOptions.Debug | D2D1CompileOptions.AvoidFlowControl | D2D1CompileOptions.PartialPrecision);
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager(bytecode, out manager));
Assert.AreEqual("PinnedBufferMemoryManager", manager !.GetType().Name);
}
public static void MemoryPoolPinBadOffsetTooLarge()
{
MemoryPool <int> pool = MemoryPool <int> .Shared;
IMemoryOwner <int> block = pool.Rent(10);
Memory <int> memory = block.Memory;
Span <int> sp = memory.Span;
Assert.Equal(memory.Length, sp.Length);
int elementIndex = memory.Length + 1;
Assert.True(MemoryMarshal.TryGetMemoryManager <int, MemoryManager <int> >(memory, out MemoryManager <int> manager));
Assert.Throws <ArgumentOutOfRangeException>(() => manager.Pin(elementIndex: elementIndex));
}
public unsafe void ShaderWithAssemblyLevelAttributesAndOverriddenProfile()
{
ReadOnlyMemory <byte> bytecode = D2D1PixelShader.LoadBytecode <ShaderWithOverriddenProfile>();
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager(bytecode, out MemoryManager <byte>?manager));
Assert.AreEqual("PinnedBufferMemoryManager", manager !.GetType().Name);
D2D1PixelShader.LoadBytecode <ShaderWithOverriddenProfile>(
shaderProfile: D2D1ShaderProfile.PixelShader50,
options: D2D1CompileOptions.IeeeStrictness | D2D1CompileOptions.OptimizationLevel2 | D2D1CompileOptions.PartialPrecision);
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager(bytecode, out manager));
Assert.AreEqual("PinnedBufferMemoryManager", manager !.GetType().Name);
}
public static void TryGetMemoryManager()
{
int[] array = new int[10];
MemoryManager <int> originalManager = new CustomMemoryForTest <int>(array);
ReadOnlyMemory <int> memory = originalManager.Memory;
Assert.True(MemoryMarshal.TryGetMemoryManager(memory, out CustomMemoryForTest <int> customManager));
Assert.Same(originalManager, customManager);
Assert.True(MemoryMarshal.TryGetMemoryManager(memory, out MemoryManager <int> manager));
Assert.Same(originalManager, manager);
Assert.False(MemoryMarshal.TryGetMemoryManager(memory, out OtherMemoryForTest <int> notManager));
Assert.Null(notManager);
}
public unsafe void ShaderWithAssemblyLevelAttributes()
{
ReadOnlyMemory <byte> bytecode = D2D1PixelShader.LoadBytecode <ShaderWithNoCompileAttributes>();
// Verify the shader was precompiled
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager(bytecode, out MemoryManager <byte>?manager));
Assert.AreEqual("PinnedBufferMemoryManager", manager !.GetType().Name);
D2D1PixelShader.LoadBytecode <ShaderWithNoCompileAttributes>(
shaderProfile: D2D1ShaderProfile.PixelShader41,
options: D2D1CompileOptions.IeeeStrictness | D2D1CompileOptions.OptimizationLevel2 | D2D1CompileOptions.PartialPrecision);
// Verify the expected options were used
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager(bytecode, out manager));
Assert.AreEqual("PinnedBufferMemoryManager", manager !.GetType().Name);
}
public static void MemoryPoolTryGetArray()
{
using (IMemoryOwner <int> block = MemoryPool <int> .Shared.Rent(42))
{
Memory <int> memory = block.Memory;
bool success = MemoryMarshal.TryGetArray(memory, out ArraySegment <int> arraySegment);
Assert.True(success);
Assert.Equal(memory.Length, arraySegment.Count);
unsafe
{
Assert.True(MemoryMarshal.TryGetMemoryManager <int, MemoryManager <int> >(memory, out MemoryManager <int> manager));
void *pSpan = Unsafe.AsPointer(ref MemoryMarshal.GetReference(manager.GetSpan()));
fixed(int *pArray = arraySegment.Array)
{
Assert.Equal((IntPtr)pSpan, (IntPtr)pArray);
}
}
}
}
public static void EachRentalIsUniqueUntilDisposed()
{
MemoryPool <int> pool = MemoryPool <int> .Shared;
List <IMemoryOwner <int> > priorBlocks = new List <IMemoryOwner <int> >();
Random r = new Random(42);
List <int> testInputs = new List <int>();
for (int i = 0; i < 100; i++)
{
testInputs.Add((Math.Abs(r.Next() % 1000)) + 1);
}
foreach (int minBufferSize in testInputs)
{
IMemoryOwner <int> newBlock = pool.Rent(minBufferSize);
Memory <int> memory = newBlock.Memory;
Assert.True(memory.Length >= minBufferSize);
Assert.True(MemoryMarshal.TryGetMemoryManager <int, MemoryManager <int> >(newBlock.Memory, out MemoryManager <int> newManager));
foreach (IMemoryOwner <int> prior in priorBlocks)
{
Assert.True(MemoryMarshal.TryGetMemoryManager <int, MemoryManager <int> >(prior.Memory, out MemoryManager <int> priorManager));
using (MemoryHandle priorMemoryHandle = priorManager.Pin())
{
using (MemoryHandle newMemoryHandle = newManager.Pin())
{
unsafe
{
Assert.NotEqual((IntPtr)priorMemoryHandle.Pointer, (IntPtr)newMemoryHandle.Pointer);
}
}
}
}
priorBlocks.Add(newBlock);
}
foreach (IMemoryOwner <int> prior in priorBlocks)
{
Assert.True(MemoryMarshal.TryGetMemoryManager <int, MemoryManager <int> >(prior.Memory, out MemoryManager <int> priorManager));
priorManager.Unpin();
prior.Dispose();
}
}
public static void MemoryPoolPin(int elementIndex)
{
MemoryPool <int> pool = MemoryPool <int> .Shared;
using (IMemoryOwner <int> block = pool.Rent(10))
{
Memory <int> memory = block.Memory;
Span <int> sp = memory.Span;
Assert.Equal(memory.Length, sp.Length);
Assert.True(MemoryMarshal.TryGetMemoryManager <int, MemoryManager <int> >(memory, out MemoryManager <int> manager));
using (MemoryHandle newMemoryHandle = manager.Pin(elementIndex: elementIndex))
{
unsafe
{
void *pSpan = Unsafe.AsPointer(ref MemoryMarshal.GetReference(sp.Slice(elementIndex)));
Assert.Equal((IntPtr)pSpan, ((IntPtr)newMemoryHandle.Pointer));
}
}
}
}
public RetainedMemory(Memory <T> memory, bool pin = true) // TODO pin param added later and before it behaved like with true, but better to change to false and review usage
{
if (MemoryMarshal.TryGetMemoryManager <T, RetainableMemory <T> >(memory, out var manager))
{
if (!manager.IsPinned && pin)
{
// TODO review. This uses implementation detail of RetainableMemory:
// if pointer is null then it is an non-pinned array for which we did not create
// a GCHandle (very expensive). Call to Pin() checks if pointer is null and
// creates a GCHandle + pointer. Try to avoid pinning non-pooled ArrayMemory
// because it is very expensive.
manager.Pin();
}
else
{
manager.Increment();
}
_manager = manager;
_offset = 0;
_length = memory.Length;
}
else if (MemoryMarshal.TryGetArray <T>(memory, out var segment))
{
_manager = ArrayMemory <T> .Create(segment.Array, segment.Offset, segment.Count, externallyOwned : true, pin);
_manager.Increment();
_offset = 0;
_length = _manager.Length;
}
else
{
ThrowNotSupportedMemoryType();
_manager = default;
_offset = 0;
_length = 0;
}
#if DETECT_LEAKS
_finalizeChecker = new PanicOnFinalize();
#endif
}
public void Test_MemoryExtensions_FromMemoryManager_CastFromByteAndBack_WithSlice()
{
// Just like the one above, but with the slice
var data = new ArrayMemoryManager <byte>(512);
Memory <byte> memoryOfBytes = data.Memory.Slice(128, 128);
Memory <float> memoryOfFloats = memoryOfBytes.Cast <byte, float>();
Memory <byte> memoryBack = memoryOfFloats.Cast <float, byte>();
Assert.AreEqual(memoryOfBytes.Length, memoryBack.Length);
// Here we also need to validate that the offset was maintained
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager <byte, ArrayMemoryManager <byte> >(memoryBack, out var manager, out var start, out var length));
Assert.AreSame(manager !, data);
Assert.AreEqual(start, 128);
Assert.AreEqual(length, 128);
Assert.IsTrue(memoryOfBytes.Equals(memoryBack));
Span <byte> span1 = memoryOfBytes.Span;
Span <byte> span2 = memoryBack.Span;
Assert.IsTrue(span1 == span2);
}
public void Test_MemoryExtensions_FromMemoryManager_CastFromByteAndBack()
{
// Equivalent to the one with an array, but with a memory manager
var data = new ArrayMemoryManager <byte>(128);
Memory <byte> memoryOfBytes = data;
Memory <float> memoryOfFloats = memoryOfBytes.Cast <byte, float>();
Memory <byte> memoryBack = memoryOfFloats.Cast <float, byte>();
Assert.AreEqual(memoryOfBytes.Length, memoryBack.Length);
// Here we expect to get back the original memory manager, due to the same optimization we
// checked for when using an array. We need to check they're the same, and the other parameters.
Assert.IsTrue(MemoryMarshal.TryGetMemoryManager <byte, ArrayMemoryManager <byte> >(memoryBack, out var manager, out var start, out var length));
Assert.AreSame(manager !, data);
Assert.AreEqual(start, 0);
Assert.AreEqual(length, 128);
Assert.IsTrue(memoryOfBytes.Equals(memoryBack));
Span <byte> span1 = memoryOfBytes.Span;
Span <byte> span2 = memoryBack.Span;
Assert.IsTrue(span1 == span2);
}
public static Stream Create(ReadOnlyMemory <byte> memory, bool isReadOnly)
{
if (memory.IsEmpty)
{
// Return an empty stream if the memory was empty
return(new MemoryStream <ArrayOwner>(ArrayOwner.Empty, isReadOnly));
}
if (MemoryMarshal.TryGetArray(memory, out ArraySegment <byte> segment))
{
var arraySpanSource = new ArrayOwner(segment.Array !, segment.Offset, segment.Count);
return(new MemoryStream <ArrayOwner>(arraySpanSource, isReadOnly));
}
if (MemoryMarshal.TryGetMemoryManager <byte, MemoryManager <byte> >(memory, out var memoryManager, out int start, out int length))
{
MemoryManagerOwner memoryManagerSpanSource = new MemoryManagerOwner(memoryManager, start, length);
return(new MemoryStream <MemoryManagerOwner>(memoryManagerSpanSource, isReadOnly));
}
return(ThrowNotSupportedExceptionForInvalidMemory());
}