From: Eric Wong <normalperson@...>
Date: 2017-12-23T08:03:30+00:00
Subject: [ruby-core:84416] Re: [Ruby trunk Misc#14222] Mutex.lock is not safe inside signal handler: what is?

nobu@ruby-lang.org wrote:
> `Thread.handle_interrupt` doesn't work.

Oops, the main thread may already have a Mutex locked, right?

> You can use `Queue` inside trap context.

Since 2.1 when Queue was reimplemented in C.  Old (pure-Ruby)
Queue used Mutex, but I guess those versions are no longer
supported (and I still have old crap on 1.9.3 :<)

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