RFR: 8373439: Deadlock between flight recorder & VMDeath

[Erik Gahlin]

On Thu, 11 Dec 2025 15:19:51 GMT, Bara' Hasheesh <duke at openjdk.org> wrote:

> A simple `PlatformRecorder.isInShutDown` check is added to `PlatformRecording.start` to prevent any new recording from start after the JVM initiates it's shutdown hooks  
> 
> A new test was added that fails without the change & passes with it 
> 
> I also ran `tier1`, `tier2` as well as `jdk_jfr` on Linux x86

src/jdk.jfr/share/classes/jdk/jfr/internal/PlatformRecording.java line 108:

> 106:         synchronized (recorder) {
> 107:             if (PlatformRecorder.isInShutDown()) {
> 108:                 throw new IllegalStateException("Flight recorder is already shutdown");

I need to think about if throwing ISE is the best alternative here.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28767#discussion_r2614980643