Feature #7082

Process.kill 0 in windows can return spurious success

Added by Roger Pack over 1 year ago. Updated over 1 year ago.

[ruby-core:47719]
Status:Assigned
Priority:Normal
Assignee:Usaku NAKAMURA
Category:-
Target version:next minor

Description

a = IO.popen('ls "."', 'w')
=> #
a.pid
=> 2104
Process.kill 0, 2104
=> 1 # should raise an exception since that process is dead now, shouldn't it? [it can be checked with GetExitCodeProcess != STILL_ACTIVE) ?

Thanks!
-r

History

#1 Updated by Roger Pack over 1 year ago

I see that the current way in windows somewhat mimic's how it operates in Unix (process is a zombie, so still responds to signals). If so, perhaps it would be nice to create a new method

Process.alive?(pid)

that would be useful in certain cases, like checking if a process is dead before closing streams to it.

So maybe change this to a feature request, if anybody can confirm the above.

Thanks.
-roger-

#2 Updated by Usaku NAKAMURA over 1 year ago

  • Tracker changed from Bug to Feature

#3 Updated by Yusuke Endoh over 1 year ago

  • Status changed from Open to Assigned
  • Assignee set to Usaku NAKAMURA
  • Target version set to next minor

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