[ruby-core:117727] [Ruby master Bug#20459] Ractor.select() deadlock?
From:
"esad (Esad Hajdarevic) via ruby-core" <ruby-core@...>
Date:
2024-04-26 12:27:02 UTC
List:
ruby-core #117727
Issue #20459 has been reported by esad (Esad Hajdarevic).
----------------------------------------
Bug #20459: Ractor.select() deadlock?
https://bugs.ruby-lang.org/issues/20459
* Author: esad (Esad Hajdarevic)
* Status: Open
* ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [arm64-darwin20]
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
When I run this script
```
echo = Ractor.new { Ractor.receive }
Thread.new { puts Ractor.select(echo).inspect }
sleep 0.1
echo.send "test"
```
the script never terminates. If I change thread body to
```
Thread.new { puts echo.take.inspect }
```
or introduce a small delay before #select like:
```
Thread.new { sleep 1; puts Ractor.select(echo).inspect }
```
then it works/terminates.
--
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