RFR: 8275286: Check current thread when calling JRT methods that expect it

[Zhengyu Gu]

On Thu, 14 Oct 2021 13:49:11 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> I found this oddity when porting Loom to x86_32. There are JRT entries that have `JavaThread* current` in their signature, and I believe that sets the expectation that JRT entry is to be called with the current thread as the argument. But, that is not mechanically checked, unless we call into some other class like `ThreadInVMfromJava`, etc. To simplify debugging, we should check current thread explicitly.
> 
> Additional testing:
>  - [x] Linux x86_64 fastdebug `tier1`
>  - [x] Linux x86_64 fastdebug `tier2`

Looks good to me.

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Marked as reviewed by zgu (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5949