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Bug #20459

closed

Ractor.select() deadlock?

Added by esad (Esad Hajdarevic) 7 months ago. Updated 6 months ago.

Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [arm64-darwin20]
[ruby-core:117727]

Description

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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