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) ?
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.
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.
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) ?
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