public ReadOnlyBuffer(OwnedMemory <byte> data, int offset, int length)
{
if (data == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.data);
}
if (offset < 0)
{
ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument.offset);
}
if (length < 0 || length > data.Length - offset)
{
ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument.length);
}
BufferStart = new Position(data, offset);
BufferEnd = new Position(data, offset + length);
}
public sealed override MemoryHandle Pin(int byteOffset = 0)
{
unsafe
{
Retain(); // this checks IsDisposed
try
{
if ((IntPtr.Size == 4 && (uint)byteOffset > (uint)_array.Length * (uint)Unsafe.SizeOf <T>()) ||
(IntPtr.Size != 4 && (ulong)byteOffset > (uint)_array.Length * (ulong)Unsafe.SizeOf <T>()))
{
ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument.byteOffset);
}
GCHandle handle = GCHandle.Alloc(_array, GCHandleType.Pinned);
return(new MemoryHandle(this, ((byte *)handle.AddrOfPinnedObject()) + byteOffset, handle));
}
catch
{
Release();
throw;
}
}
}
