IO.popen4 returns the wrong pid in Linux
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Key: JRUBY-4908
URL: http://jira.codehaus.org/browse/JRUBY-4908
Project: JRuby
Issue Type: Bug
Environment: jruby 1.6.0.dev (ruby 1.8.7 patchlevel 249) (2010-06-25
fatal: unrecognized argument: --format=format:%h) (Java HotSpot(TM) Client VM
1.6.0_17) [i386-java]
Reporter: Roger Pack
Assignee: Thomas E Enebo
In irb, I see this:
>> IO.popen4("ruby -e 'loop {}'")
=> [21498, #<IO:0x90fa05>, #<IO:0xe7d53>, #<IO:0x145fe3b>]
However, killing that process doesn't actually kill ruby. In this instance
(and, indeed, all instances, it appears), ruby's "real" process id is that + 1:
top shows it as:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
21499 rdp 20 0 6960 3092 1952 R 89 0.1 2:20.07 ruby
Thanks much.
-rp
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