From: "luke-gru (Luke Gruber) via ruby-core" <ruby-core@ml.ruby-lang.org>
To: ruby-core@ml.ruby-lang.org
Cc: "luke-gru (Luke Gruber)" <noreply@ruby-lang.org>
Subject: [ruby-core:117730] [Ruby master Misc#20272] Ambiguity around Ractor message sending FIFO semantics
Date: Fri, 26 Apr 2024 17:51:52 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-108137.20240426175152.53072@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-20272.20240216182609.53072@ruby-lang.org
Issue #20272 has been updated by luke-gru (Luke Gruber).
The messages in that case would be guaranteed to be received in order (first "hello" then "world").
If you have 2 different ractors or 2 different threads both receiving messages from the same ractor, then there is no guarantee of the order.
----------------------------------------
Misc #20272: Ambiguity around Ractor message sending FIFO semantics
https://bugs.ruby-lang.org/issues/20272#change-108137
* Author: forthoney (Seong-Heon Jung)
* Status: Open
----------------------------------------
The docs should explicitly state the semantics/properties of Ractor message, especially when it comes to FIFO.
For example, assume I have two Ractors, Ractor A and Ractor B. Ractor A sends two messages `"hello"` and `"world"` in this order to Ractor B.
If I call `Ractor.receive` on Ractor B, am I guaranteed to see `"hello"` and then `"world"` or is it possible the messages are delivered out of order?
--
https://bugs.ruby-lang.org/
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prev parent reply other threads:[~2024-04-26 17:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-16 18:26 [ruby-core:116802] [Ruby master Misc#20272] Ambiguity around Ractor message sending FIFO semantics forthoney (Seong-Heon Jung) via ruby-core
2024-04-26 17:51 ` luke-gru (Luke Gruber) via ruby-core [this message]
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