Kernel.system and ThreadDeath

Detlef_R · February 7, 2014, 3:15am

Hi Gurus,

it seems well known that Kernel.system() can cause java ThreadDeath
errors
due to calling java.lang.Thread.stop() - see

github.com/jruby/jruby

Use of deprecated Thread.stop() causes ThreadDeath exceptions propagating to caller

opened 04:53PM - 29 Oct 13 UTC

closed 07:43PM - 19 Sep 18 UTC

headius

core internal

This was originally at: https://jira.codehaus.org/browse/JRUBY-7074 A change in…troduced in jruby 1.6.8 is a call (well, three calls) to the deprecated Thread.stop() method in org.jruby.util.ShellLauncher.handleStreams(). This causes a problem in an embedded interpreter that runs ruby scripts which in turn start a shell due to ThreadDeath exceptions being propagated up into the embedding code. Should the jruby framework itself be catching and dealing with any cleanup resulting from these exceptions? Or perhaps the use of deprecated methods should be reviewed?

My understanding is, apart from the error message it’s harmless. Is this
right?

What I’m wondering now, is there any way to avoid the error message in
the
client code?

Thanks for any hints.
Gergo