Integrated: 8297600: Check current thread in selected JRT_LEAF methods

[Aleksey Shipilev]

On Thu, 24 Nov 2022 19:23:29 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> With [JDK-8275286](https://bugs.openjdk.org/browse/JDK-8275286), we added the `Thread::current()` checks for most of the JRT entries. But `JRT_LEAF` is still not checked, because not every `JRT_LEAF` carries a `JavaThread` argument. Having assertions there helps for two reasons. First, these methods can be called from the stub/compiler code, which might be erroneous with thread handling (especially in x86_32 that does not have a dedicated thread register). Second, in the post-Loom world, current thread can change suddenly, as evidenced here: https://mail.openjdk.org/pipermail/hotspot-compiler-dev/2022-November/060779.html.
> 
> We can add the thread checks to relevant `JRT_LEAF` methods that accept `JavaThread*` too.
> 
> Additional testing:
>  - [x] Linux x86_64 fastdebug `tier1`
>  - [x] Linux x86_64 fastdebug `tier2`
>  - [x] Linux x86_32 fastdebug `tier1`
>  - [x] Linux x86_32 fastdebug `tier2`

This pull request has now been integrated.

Changeset: b3501fd1
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/b3501fd11c59813515b46f80283e22b094c6e251
Stats:     19 lines in 7 files changed: 19 ins; 0 del; 0 mod

8297600: Check current thread in selected JRT_LEAF methods

Reviewed-by: dholmes, coleenp

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PR: https://git.openjdk.org/jdk/pull/11359