RFR: 8367725: Incorrect reading of oop in SuspendResumeManager::suspend while thread is blocked [v10]

[David Holmes]

On Thu, 18 Sep 2025 05:42:01 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> ough,
>> yes, should be outside INCLUDE_JVMTI 
>> However, I just can't understand how those methods could be called if JVMTI is not included. Do we still have any mechanisms to suspend thread without jvmti nowdays?
>
> No we don't but we are left with a lot of historical code organization. JVMTI is the only client of the `JavaThread::java_suspend/java_resume` API but that code already existed independent of JVMTI. The current INCLUDE_JVMTI guards are what is needed to make a non-JVMTI configuration build. If we were so inclined we could push those guards right up to JavaThread and then exclude compiling files like `suspendResumeManager.cpp`.

Except the notion of "suspend" permeates the handshake code and is impossible to disentangle.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27317#discussion_r2357624527