Class: Pwrake::Executor

Inherits:
Object
  • Object
show all
Defined in:
lib/pwrake/worker/executor.rb

Constant Summary collapse

ENV = 
{
"OMPI_APP_CTX_NUM_PROCS" => nil,
"OMPI_COMM_WORLD_LOCAL_RANK" => nil,
"OMPI_COMM_WORLD_LOCAL_SIZE" => nil,
"OMPI_COMM_WORLD_NODE_RANK" => nil,
"OMPI_COMM_WORLD_RANK" => nil,
"OMPI_COMM_WORLD_SIZE" => nil,
"OMPI_FILE_LOCATION" => nil,
"OMPI_FIRST_RANKS" => nil,
"OMPI_MCA_db" => nil,
"OMPI_MCA_ess" => nil,
"OMPI_MCA_ess_base_jobid" => nil,
"OMPI_MCA_ess_base_vpid" => nil,
"OMPI_MCA_grpcomm" => nil,
"OMPI_MCA_initial_wdir" => nil,
"OMPI_MCA_mpi_yield_when_idle" => nil,
"OMPI_MCA_orte_app_num" => nil,
"OMPI_MCA_orte_bound_at_launch" => nil,
"OMPI_MCA_orte_ess_jobid" => nil,
"OMPI_MCA_orte_ess_node_rank" => nil,
"OMPI_MCA_orte_ess_num_procs" => nil,
"OMPI_MCA_orte_ess_vpid" => nil,
"OMPI_MCA_orte_hnp_uri" => nil,
"OMPI_MCA_orte_local_daemon_uri" => nil,
"OMPI_MCA_orte_num_nodes" => nil,
"OMPI_MCA_orte_num_restarts" => nil,
"OMPI_MCA_orte_tmpdir_base" => nil,
"OMPI_MCA_plm" => nil,
"OMPI_MCA_pubsub" => nil,
"OMPI_MCA_shmem_RUNTIME_QUERY_hint" => nil,
"OMPI_NUM_APP_CTX" => nil,
"OMPI_UNIVERSE_SIZE" => nil,
"PMI_RANK" => nil,
"PMI_FD" => nil,
"PMI_SIZE" => nil,
}

Instance Method Summary collapse

Constructor Details

#initialize(selector, dir_class, id) ⇒ Executor

Returns a new instance of Executor.



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# File 'lib/pwrake/worker/executor.rb', line 42

def initialize(selector,dir_class,id)
  @selector = selector
  @id = id
  @out = Writer.instance
  @log = LogExecutor.instance
  @queue = FiberQueue.new
  @rd_list = []
  @dir = dir_class.new
  @dir.open
  @dir.open_messages.each{|m| @log.info(m)}
  @out.puts "#{@id}:open"

  r,w = IO.pipe
  @command_pipe_r = NBIO::Reader.new(@selector,r)
  @command_pipe_w = NBIO::Writer.new(@selector,w)
  @start_process_fiber = Fiber.new do
    while line = @queue.deq
      cmd = line
      while /\\$/ =~ line  # line continues
        line = @queue.deq
        break if !line
        cmd += line
      end
      break if @stopped
      cmd.chomp!
      if !cmd.empty?
        start_process(cmd)
      end
      Fiber.yield
    end
  end
end

Instance Method Details

#callback(rd, mode) ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 138

def callback(rd,mode)
  while s = rd.gets
    @out.puts "#{@id}:#{mode}:#{s.chomp}"
  end
  if rd.eof?
    @rd_list.delete(rd)
    if @rd_list.empty?  # process_end
      @thread = @pid = nil
      @log.info inspect_status
      @out.puts "#{@id}:z:#{exit_status}"
      @sh_in.close
      @sh_out.close
      @sh_err.close
      @start_process_fiber.resume # next process
    end
  end
rescue => exc
  @log.error(([exc.to_s]+exc.backtrace).join("\n"))
  stop
end

#close ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 80

def close
  if @thread
    @thread.join(15)
    sleep 0.1
  end
  @thread = Thread.new do
    @dir.close_messages.each{|m| @log.info(m)}
    @dir.close
  end
rescue => exc
  @log.error(([exc.to_s]+exc.backtrace).join("\n"))
end

#execute(cmd) ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 101

def execute(cmd)
  return if @stopped
  @queue.enq(cmd)
  @start_process_fiber.resume
end

#exit_status ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 177

def exit_status
  s = @status
  case
  when s.signaled?
    if s.coredump?
      "core_dumped"
    else
      "killed:#{s.termsig}"
    end
  when s.stopped?
    "stopped:#{s.stopsig}"
  when s.exited?
    "#{s.exitstatus}"
  else
    "unknown:%#x" % s.to_i
  end
end

#inspect_status ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 159

def inspect_status
  s = @status
  case
  when s.signaled?
    if s.coredump?
      "pid=#{s.pid} dumped core."
    else
      "pid=#{s.pid} was killed by signal #{s.termsig}"
    end
  when s.stopped?
    "pid=#{s.pid} was stopped by signal #{s.stopsig}"
  when s.exited?
    "pid=#{s.pid} exited normally. status=#{s.exitstatus}"
  else
    "unknown status %#x" % s.to_i
  end
end

#join ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 93

def join
  if @thread
    @thread.join(15)
  end
rescue => exc
  @log.error(([exc.to_s]+exc.backtrace).join("\n"))
end

#kill(sig) ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 195

def kill(sig)
  stop
  if @pid
    Process.kill(sig,-@pid)
    @log.warn "Executor(id=#{@id})#kill pid=#{@pid} sig=#{sig}"
  end
end

#start_process(command) ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 107

def start_process(command)
  return if @thread      # running
  return if !command     # empty queue
  @spawn_in, @sh_in = IO.pipe
  @sh_out, @spawn_out = IO.pipe
  @sh_err, @spawn_err = IO.pipe

  @pid = Kernel.spawn(ENV, command,
                      :in=>@spawn_in,
                      :out=>@spawn_out,
                      :err=>@spawn_err,
                      :chdir=>@dir.current,
                      :pgroup=>true
                     )
  @log.info "pid=#{@pid} started. command=#{command.inspect}"

  @thread = Thread.new do
    @pid2,@status = Process.waitpid2(@pid)
    @spawn_in.close
    @spawn_out.close
    @spawn_err.close
  end

  @rd_out = NBIO::Reader.new(@selector,@sh_out)
  @rd_err = NBIO::Reader.new(@selector,@sh_err)
  @rd_list = [@rd_out,@rd_err]

  Fiber.new{callback(@rd_err,"e")}.resume
  Fiber.new{callback(@rd_out,"o")}.resume
end

#stop ⇒ Object 



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# File 'lib/pwrake/worker/executor.rb', line 75

def stop
  @stopped = true
  @queue.finish
end