Integrated: 8359820: Improve handshake/safepoint timeout diagnostic messages

[Anton Artemov]

On Tue, 15 Jul 2025 08:37:38 GMT, Anton Artemov <duke at openjdk.org> wrote:

> Hi, please consider the following changes:
> 
> The problem in the issue description is not a problem by itself, the behavior is not unexpected, but it is somewhat difficult to find out what caused SIGILL to be fired.
> 
> We propagate this information from `handshake::handle_timeout()` to `VMError::report()` with a help of a global variable.  The same mechanism is used to address a similar issue in the safepoint timeout handler. 
> 
> Tested in tiers 1-3.

This pull request has now been integrated.

Changeset: 6656e767
Author:    Anton Artemov <anton.artemov at oracle.com>
Committer: David Holmes <dholmes at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/6656e767db05e8e11ea17385674d8aa4385c60ed
Stats:     34 lines in 5 files changed: 31 ins; 0 del; 3 mod

8359820: Improve handshake/safepoint timeout diagnostic messages

Reviewed-by: dholmes, stuefe

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PR: https://git.openjdk.org/jdk/pull/26309