RFR: 8373366: HandshakeState should disallow suspend ops for disabler threads [v13]

[Serguei Spitsyn]

On Wed, 21 Jan 2026 18:13:39 GMT, Patricio Chilano Mateo <pchilanomate at openjdk.org> wrote:

> I see, could we keep the original assert? Should not be possible to request suspend on a transition disabler.

Even though such a request is not possible, it should be allowed in general as it does not break anything at this execution point. :) But I do not see a problem to restore the assert.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28740#discussion_r2714084109