Problem report on the usage of Structured Concurrency (5th preview)

[Viktor Klang]

It seems like there's an opportunity to further constrain the usage of Subtask::get to avoid race conditions.

Cheers,
√


Viktor Klang
Software Architect, Java Platform Group
Oracle
________________________________
From: loom-dev <loom-dev-retn at openjdk.org> on behalf of Alan Bateman <alan.bateman at oracle.com>
Sent: Friday, 26 September 2025 16:25
To: Remi Forax <forax at univ-mlv.fr>
Cc: loom-dev <loom-dev at openjdk.org>
Subject: Re: Problem report on the usage of Structured Concurrency (5th preview)



On 26/09/2025 14:01, Remi Forax wrote:

In that case, maybe Subtask.get() should not throw an exception when called from the main thread.

That seat belt is there to catch mis-use, need to call join before processing the outcome.

-Alan
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