public void CopyPointerToPointer_Unsafe()
{
var size = _container.Size;
unsafe
{
using var destContainer0 = new UnmanagedMemoryContainer(size);
void *srcPointer = _container.IntPtr.ToPointer();
void *destPointer = destContainer0.IntPtr.ToPointer();
// void* srcPointer / void* destPointer
Unsafe.CopyBlock(srcPointer, destPointer, (uint)size);
Assert.Equal(_container.GetSum(), destContainer0.GetSum());
}
unsafe
{
using var destContainer1 = new UnmanagedMemoryContainer(size);
void *srcPointer = _container.IntPtr.ToPointer();
void *destPointer = destContainer1.IntPtr.ToPointer();
// Unalignedにする必要ない(使いたいだけ)
Unsafe.CopyBlockUnaligned(srcPointer, destPointer, (uint)size);
Assert.Equal(_container.GetSum(), destContainer1.GetSum());
}
}
public static ulong GetSum(this UnmanagedMemoryContainer container)
{
ulong sum = 0;
for (var i = 0; i < container.Size; ++i)
{
sum += Marshal.ReadByte(container.IntPtr, i);
}
return(sum);
}
public static UnmanagedMemoryContainer GetInstanceBurst256Byte()
{
var container = new UnmanagedMemoryContainer(256);
for (var i = 0; i < container.Size; ++i)
{
Marshal.WriteByte(container.IntPtr, i, (byte)i);
}
return(container);
}
public void CopyPointerToPointer_memcpy()
{
var size = _container.Size;
using var destContainer = new UnmanagedMemoryContainer(size);
var srcIntPtr = _container.IntPtr;
var destIntPtr = destContainer.IntPtr;
_ = memcpy(destIntPtr, srcIntPtr, (UIntPtr)size);
Assert.Equal(_container.GetSum(), destContainer.GetSum());
}
public void CopyPointerToPointer_Buffer()
{
unsafe
{
var size = _container.Size;
using var destContainer = new UnmanagedMemoryContainer(size);
void *srcPointer = _container.IntPtr.ToPointer();
void *destPointer = destContainer.IntPtr.ToPointer();
// void* srcPointer / void* destPointer
Buffer.MemoryCopy(srcPointer, destPointer, destinationSizeInBytes: size, sourceBytesToCopy: size);
Assert.Equal(_container.GetSum(), destContainer.GetSum());
}
}
public void CopyArrayToPointer()
{
var size = 256;
var srcArray = Enumerable.Range(0, size).Select(x => (byte)x).ToArray();
using var destContainer = new UnmanagedMemoryContainer(size);
var destIntPtr = destContainer.IntPtr;
Marshal.Copy(srcArray, startIndex: 0, destIntPtr, srcArray.Length);
ulong sum = 0;
foreach (var b in srcArray)
{
sum += b;
}
Assert.Equal(sum, destContainer.GetSum());
}
public ConvertTests()
{
// テスト開始の度にコールされる
_container = UnmanagedMemoryContainerExtension.GetInstanceBurst256Byte();
}