How to safely get array pointer by Unsafe.AsPointer without fixed it?

[mkjeff]

How to safely get array pointer by Unsafe.AsPointer without fixed it?

[mkjeff]

Seems dotnet codefx team use a trick doing this.

    [StructLayout(LayoutKind.Sequential)]
    internal sealed class Pinnable<T>
    {
        public T Data;
    }

https://github.com/dotnet/corefx/blob/757de9ef5e3964c8ca56d088854230feb2da23a5/src/System.Memory/src/System/ReadOnlySpan.cs#L93

I do not know exactly how it works.

[SEPTEMBER998767]

Hi, any max device support limit? I still not sure for how it will work with multi threading environment. I would suggest for more detail document and example for multi device/thread. Thank you.

sorry I am quite not familiar with git if i post wrongly here, code plex user here 🍡 ,
can't find correct discussion tab.

Oh, the project is evolving so much, I was checking the old one from code plex. gotta browse through.

[mkjeff]

Yeah, code changes a lot.
At present, all of the change were POC merely. It's just fun for me.

In fact, I'm not in the industry a while. I hope somebody can contribute this project or even take over and made it works in real world.

Back to topic,
I think this why C# 7.0 need to provide ref return feature. It's the key role for open up performance gain and keep language still safe.

Code for fun :)

[mkjeff]

Seems this is an answer: Span has undefined behavior off the stack