Class: Procview::Runner

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

Constant Summary collapse

FORMAT = 
"%7s"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/procview/runner.rb', line 18

def initialize(argv)
  @opts = Options.new(argv)
end

Instance Attribute Details

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



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# File 'lib/procview/runner.rb', line 14

def opts
  @opts
end

Instance Method Details

#printCalls(pva) ⇒ Object 



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# File 'lib/procview/runner.rb', line 142

def printCalls pva
  puts "Duration by Call Type"
  totalType = 0.0
  pva.calls.keys.sort{|a,b| pva.calls[b][1] <=> pva.calls[a][1]}.each do |k|
    v = pva.calls[k]
    printf "#{FORMAT} #{k}: #{v[0]}\n", v[1].to_duration(@opts.digits)
    totalType += v[1]
  end
  printf "#{FORMAT} Total duration \n\n", totalType.to_duration(@opts.digits)

  if pva.sigmap.size > 0
    puts "Signals"
    pva.sigmap.keys.sort{|a,b| pva.sigmap[b] <=> pva.sigmap[a]}.each do |k|
      puts "\t#{k}: #{pva.sigmap[k]}"
    end
  end
end

#printReport(pva) ⇒ Object 



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# File 'lib/procview/runner.rb', line 109

def printReport pva

  ioformat = Array.new(4, FORMAT).join(' ')

  puts "Duration by Source"
  printf "#{ioformat} %s\n", 'OTHER', 'WAIT', 'READ', 'WRITE', 'Name'
  totalSource = Procview::Stats.new
  pva.iomap.keys.sort{|a,b| pva.iomap[b].sum <=> pva.iomap[a].sum}.each do |k|
    binned = false
    @opts.buckets.values.each do |v|
      binned = k =~ v[0]
      if binned
        v[1].add! pva.iomap[k]
        break
      end
    end
    unless binned
      printf "#{ioformat} ", *(pva.iomap[k].map{|m|m.to_duration(@opts.digits)})
      puts k # as it may contain %
    end
    totalSource.add! pva.iomap[k]
  end
  @opts.buckets.each do |k,v|
    name = k.is_a?(Symbol) ? k.to_s: "Sum: #{k}"
    printf "#{ioformat} #{name}\n", *(v[1].map{|m|m.to_duration(@opts.digits)})
  end
  printf "#{ioformat} Total duration\n", *(totalSource.map{|m|m.to_duration(@opts.digits)})
  printf "#{FORMAT} %34s\n", pva.dregs.to_duration(@opts.digits), 'Unassigned'

  return totalSource.sum

end

#run ⇒ Object 



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# File 'lib/procview/runner.rb', line 22

def run
  if @opts.debug
    @opts.debug = File.open("/tmp/procview.debug.#{$$}", "w")
    $stderr.puts "Writing debug output to file #{@opts.debug.path}"
  end

  unless @opts.filename
    Procview.checklsof @opts.quiet
    Procview.checkstrace @opts.quiet
  end

  pva = Analyzer.new @opts.to_h

  if @opts.filename
    file = File.open(@opts.filename, "r")
    unless file
      $stderr.puts "Can't open input file #{@opts.filename}"
      exit 2
    end
    if @opts.raw
      pva.pwd = FileUtils.pwd
      pva.inithandles = { 0 => :stdin, 1 => :stdout, 2 => :stderr }
    end
    pva.load(file)
  else
    fifoname = "/tmp/procview.fifo.#{$$}"
    res = `mkfifo #{fifoname}`
    begin
      cmdargs = Procview::STRACE + [ "-o", fifoname ]
      if @opts.pid
        puts "Tracing PID #{@opts.pid} (Ctrl-C to disconnect)"
        cmdargs += [ "-p", @opts.pid.to_s ]
      else
        cmdargs += ARGV
      end
      stpid = spawn *cmdargs
      trap 'INT' do
        Process.kill("INT", stpid)
        puts "Sent #{stpid} SIGINT"
      end
      if @opts.pid
        IO.popen(Procview::LSOF + ["-p", @opts.pid.to_s]) do |lsof|
          while line = lsof.gets
            fields = line.split /\s+/
            next unless fields[3] =~ /(\d+\w|cwd)/
            @opts.debug.puts "LSOF #{line}\n" if @opts.debug
            pva.digest "LSOF #{line}"
          end
        end
      else
        pva.pwd = FileUtils.pwd
        pva.inithandles = { 0 => :stdin, 1 => :stdout, 2 => :stderr }
        # We don't know the actual traced process PID so put -1
        # and let the analyzer work things out
        @opts.debug.puts <<-FAKELSOF.gsub(/^\s+/,'')  if @opts.debug
          LSOF bash    -1 root  cwd    DIR  253,0     4096 655363 #{pva.pwd}
          LSOF bash    -1 root    0u   CHR  136,0      0t0      3 stdin
          LSOF bash    -1 root    1u   CHR  136,0      0t0      3 stdout
          LSOF bash    -1 root    2u   CHR  136,0      0t0      3 stderr
          FAKELSOF
      end
      File.open(fifoname, "r") do |fifo|
        pva.load(fifo)
      end
      Process.wait(stpid)
    ensure
      FileUtils.rm_f fifoname
    end
  end

  totalBySource = printReport pva
  totalByCall   = pva.calls.values.inject(0.0){|s,v| s + v[1]}

  unless @opts.quiet
    $stderr.puts "Warnings (#{pva.warnings.size})\n" if pva.warnings.size > 0
    pva.warnings.each { |w| $stderr.puts w }
  end

  unless totalByCall.near? totalBySource + pva.dregs, 0.001
    puts "WARNING IO and call totals don't add up!"
    printf "\tDelta %s (The dregs were %s)\n", (totalByCall - totalBySource).to_duration(@opts.digits), pva.dregs.to_duration(@opts.digits)
  end

  printCalls(pva) if @opts.calls

end