Class: After

Inherits:
Object
  • Object
show all
Defined in:
lib/after.rb

Class Method Summary collapse

Class Method Details

.find_and_wait_for(args) ⇒ Object 



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# File 'lib/after.rb', line 36

def self.find_and_wait_for(args)
  pids = find_pids args
  if pids.length > 1
    puts "found more than one -- waiting for all -- #{pids.map{|pid, name| name}.inspect}" if $VERBOSE
  end
  pids.each{|pid, name|
    puts "waiting for #{pid} (#{name.strip})" if $VERBOSE
    WaitPid.wait_nonchild_pid pid
  }
end

.find_pids(many_args) ⇒ Object 



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# File 'lib/after.rb', line 10

def self.find_pids(many_args)

  procs_by_pid = {}
  if OS.windows?
    procs = WMI::Win32_Process.find(:all)
    for proc in procs
      procs_by_pid[proc.ProcessId] = ("% 20s" % proc.Name.to_s) + ' ' + proc.CommandLine.to_s
    end
  else
    a = `ps -ef` # my linux support isn't very good yet...
    a.lines.to_a[1..-1].each{|l| pid = l.split(/\s+/)[1]; procs_by_pid[pid.to_i] = l}
  end

  good_pids = []
  for pid, description in procs_by_pid
    if description.contain?(many_args)
      next if pid == Process.pid
      good_pids << [pid, description]
      if $DISPLAY_ALL
       pps 'found', "% 5d" % pid, description
      end
    end
  end
  good_pids
end

.go ⇒ Object

main, really



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# File 'lib/after.rb', line 53

def self.go
  if ARGV.delete('-q')
    $VERBOSE = false
  else
    $VERBOSE = true
  end

  $DISPLAY_ALL = false
  # TODO real command line parsing, yikes for this stuff!
  if ARGV[0].in? ['-l', '--list', '-ls']
    ARGV.shift
    $DISPLAY_ALL = true
    query = ARGV.shift || ''
    got = After.find_pids(query)
    if got.empty?
      puts "none found #{query}"
    end
    exit # early exit
  elsif ARGV[0] == '-p'
    ARGV.shift
    pids = ARGV.shift
    pids = pids.split(',')      
    puts "waiting for pids #{pids.join(',')}" if $VERBOSE and pids.length > 1
    for pid in pids
      puts "waiting for pid #{pid}" if $VERBOSE
      begin
        After.wait_pid pid.to_i
      rescue Errno::EPERM
        p 'pid does not exist maybe it already has exited ' + pid if $VERBOSE
      end
    end
  else
    After.find_and_wait_for(ARGV.shift)
  end

  puts 'after: now running:', ARGV if $VERBOSE
  system(*ARGV) if ARGV.length > 0
end

.wait_pid(pid) ⇒ Object 



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# File 'lib/after.rb', line 47

def self.wait_pid pid
  WaitPid.wait_nonchild_pid pid
end