Determining if a process is alive on windows

ruby-talk
1

on *nix i use this

···

#
# returns true if pid is running, false otherwise
#
   def alive pid
#--{{{
     pid = Integer("#{ pid }")
     begin
       Process::kill 0, pid
       true
     rescue Errno::ESRCH
       false
     end
#--}}}
   end
   alias alive? alive
   export 'alive', 'alive?'

i expect it won't work on windows but maybe i'm wrong? if so can someone suggest code to accomplish this task?

cheers.

a @ http://drawohara.com/
--
we can deny everything, except that we have the possibility of being better. simply reflect on that.
h.h. the 14th dalai lama

2

i expect it won't work on windows but maybe i'm wrong? if so can
someone suggest code to accomplish this task?

cheers.

a @ http://drawohara.com/

It works for me on Windows XP, with the Ruby 1.86 OCI.

alive?(6012) # firefox

=> true

alive?(5352) # task manager

=> true

alive?(6000) # doesn't exist

=> false

regards,

Gordon

···

On 10/3/07, ara.t.howard <ara.t.howard@gmail.com> wrote:

3

It works for me on windows too, but I've got 2 questions:

I get "undefined method `export' for main:Object (NoMethodError)"
What does export do? Where is it defined?

And what are these comments for?
#---{{{
#---}}}

thanks,
-Adam

···

On 10/3/07, ara.t.howard <ara.t.howard@gmail.com> wrote:

#
  def alive pid
#--{{{
    pid = Integer("#{ pid }")
    begin
      Process::kill 0, pid
      true
    rescue Errno::ESRCH
      false
    end
#--}}}
  end
  alias alive? alive
  export 'alive', 'alive?'

i expect it won't work on windows but maybe i'm wrong? if so can
someone suggest code to accomplish this task?

4

It works for me on windows too,

thanks!

but I've got 2 questions:

I get "undefined method `export' for main:Object (NoMethodError)"
What does export do? Where is it defined?

it's in alib:

   module Util
     def self.export *syms
       syms.each do |sym|
         module_function sym
         public sym
       end
     end
   end

And what are these comments for?
#---{{{
#---}}}

the #{{{ and #}}} mark folds in vim so, to me, all that code is one line. the leading --- keeps rdoc from choking on them. cheers.

a @ http://drawohara.com/

···

On Oct 3, 2007, at 11:27 AM, Adam Shelly wrote:
--
we can deny everything, except that we have the possibility of being better. simply reflect on that.
h.h. the 14th dalai lama

5

well i'll be!

thanks a bunch.

a @ http://drawohara.com/

···

On Oct 3, 2007, at 9:31 AM, Gordon Thiesfeld wrote:

It works for me on Windows XP, with the Ruby 1.86 OCI.

--
we can deny everything, except that we have the possibility of being better. simply reflect on that.
h.h. the 14th dalai lama