Feature #7082
openProcess.kill 0 in windows can return spurious success
Description
a = IO.popen('ls "."', 'w')
=> #<IO:fd 4>
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
Updated by rogerdpack (Roger Pack) almost 12 years 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-
Updated by usa (Usaku NAKAMURA) almost 12 years ago
- Tracker changed from Bug to Feature
Updated by mame (Yusuke Endoh) over 11 years ago
- Status changed from Open to Assigned
- Assignee set to usa (Usaku NAKAMURA)
- Target version set to 2.6
Updated by usa (Usaku NAKAMURA) almost 7 years ago
- Status changed from Assigned to Open
- Assignee deleted (
usa (Usaku NAKAMURA))
Updated by rrroybbbean (RRRoy BBBean) almost 7 years ago
Sorry to jump in, but this might help.
In the past, I have had problems with the 'kill' command on Windows 7,
and I stopped using 'kill' on Windows over 4 years ago.
This problem with 'kill' was independent of Ruby. I found that 'kill'
did not (always/sometimes) work from the bash/cygwin command line. No
error. It just didn't work. I figured it was a just a windows thing.
I use the Windows Task Manager on Windows 7 to terminate processes
instead. It always works.
I only mention this because the problem raised may be caused by
underlying software libraries, and not Ruby.
On 10/21/2017 07:02 AM, usa@garbagecollect.jp wrote:
Issue #7082 has been updated by usa (Usaku NAKAMURA).
Status changed from Assigned to Open
Assignee deleted (usa (Usaku NAKAMURA))
Feature #7082: Process.kill 0 in windows can return spurious success
https://bugs.ruby-lang.org/issues/7082#change-67433
- Author: rogerdpack (Roger Pack)
- Status: Open
- Priority: Normal
- Assignee:
- Target version: next minor
a = IO.popen('ls "."', 'w')
=> #<IO:fd 4>
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