remove httpcontext from rolename initializer

[TimothyMothra]

No description provided.

[TimothyMothra]

@Dmitry-Matveev, we need to re-test performance after this merges

[lmolkova]

why not using Interlocked.CompareExchange for comparison and exchange?

[TimothyMothra]

Simple answer is, i didn't know the correct way to use CompareExchange.
Now that I have better test coverage, i'll take another look at this. :)

[TimothyMothra]

If you know something I don't, please share. :)

From what I'm reading, CompareExchange will always replace the ref variable with an incoming value.
In my use case, I only need to replace the ref variable when the incoming value does not match.
Specifically, when a VIP SWAP occurs, we need to update the role name.
My understanding is, replacing this with a CompareExchange will always replace the ref variable with the incoming value regardless of if it's new.

I believe CompareExchange doesn't help me in this use case.
But please correct me if i'm wrong.