Class: OrigenSim::Simulator

Inherits:
Object
  • Object
show all
Includes:
Origen::PersistentCallbacks
Defined in:
lib/origen_sim/simulator.rb

Overview

Responsible for managing and communicating with the simulator process, a single instance of this class is instantiated as OrigenSim.simulator

Constant Summary collapse

VENDORS = 
[:icarus, :cadence, :synopsys, :generic]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Simulator

Returns a new instance of Simulator.



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# File 'lib/origen_sim/simulator.rb', line 19

def initialize
  @simulations = []
  @simulation_open = false
end

Instance Attribute Details

#configuration ⇒ Object (readonly) Also known as: config

Returns the value of attribute configuration.



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# File 'lib/origen_sim/simulator.rb', line 11

def configuration
  @configuration
end

#simulation ⇒ Object (readonly)

The instance of OrigenSim::Simulation for the current simulation



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# File 'lib/origen_sim/simulator.rb', line 14

def simulation
  @simulation
end

#simulations ⇒ Object (readonly)

Returns an array containing all instances of OrigenSim::Simulation that were created in the order that they were created



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# File 'lib/origen_sim/simulator.rb', line 17

def simulations
  @simulations
end

Instance Method Details

#before_pattern(name) ⇒ Object

Called before every pattern is generated, but we only use it the first time it is called to kick off the simulator process if the current tester is an OrigenSim::Tester



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# File 'lib/origen_sim/simulator.rb', line 505

def before_pattern(name)
  if simulation_tester?
    if OrigenSim.flow || !simulation
      # When running patterns back-to-back, only want to launch the simulator the first time
      start unless simulation
    else
      simulation.completed_cleanly = true
      stop
      start
    end
    # Set the current pattern name in the simulation
    put("a^#{name.sub(/\..*/, '')}")
    @pattern_count ||= 0
    # If running a flow, give the user some feedback about pass/fail status after
    # each individual pattern has completed
    if @pattern_count > 0 && OrigenSim.flow
      simulation.log_results(true)
      # Require each pattern to set this upon successful completion
      simulation.completed_cleanly = false unless @flow_running
    end
    @pattern_count += 1
  end
end

#commit_simulation_objects(options = {}) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 90

def commit_simulation_objects(options = {})
  sid = options[:id] || id
  ldir = "#{Origen.root}/simulation/#{sid}"
  tmp_dir = "#{Origen.root}/tmp/origen_sim/tmp"
  unless File.exist?(ldir)
    fail "The simulation directory to check in does not exist: #{ldir}"
  end
  Dir.chdir "#{Origen.root}/simulation/" do
    system "tar -cvzf #{sid}.tar.gz #{sid}"
  end

  FileUtils.rm_rf(tmp_dir) if File.exist?(tmp_dir)
  FileUtils.mkdir_p(tmp_dir)
  FileUtils.cp "#{ldir}.tar.gz", tmp_dir

  rc = Origen::RevisionControl.new remote: config[:rc_dir_url], local: tmp_dir
  rc.checkin "#{sid}.tar.gz", unmanaged: true, force: true, comment: 'Checked in via sim:rc command'
ensure
  FileUtils.rm_f "#{ldir}.tar.gz" if File.exist?("#{ldir}.tar.gz")
  FileUtils.rm_rf tmp_dir if File.exist?(tmp_dir)
end

#compiled_dir ⇒ Object

Returns the directory where the compiled simulation object lives, this should be checked into your Origen app’s repository



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# File 'lib/origen_sim/simulator.rb', line 138

def compiled_dir
  @compiled_dir ||= begin
    d = "#{Origen.root}/simulation/#{id}/#{config[:vendor]}"
    FileUtils.mkdir_p(d)
    d
  end
end

#config_changed? ⇒ Boolean

Returns true if the config has been changed since the last time we called save_config_signature

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 806

def config_changed?
  Origen.app.session.origen_sim["#{id}_config"] != config
end

#configure(options, &block) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 112

def configure(options, &block)
  fail 'A vendor must be supplied, e.g. OrigenSim::Tester.new(vendor: :icarus)' unless options[:vendor]
  unless VENDORS.include?(options[:vendor])
    fail "Unknown vendor #{options[:vendor]}, valid values are: #{VENDORS.map { |v| ':' + v.to_s }.join(', ')}"
  end
  @configuration = options
  @tmp_dir = nil
end

#cycle(number_of_cycles) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 613

def cycle(number_of_cycles)
  put("3^#{number_of_cycles}")
end

#define_pins ⇒ Object

Tells the simulator about the pins in the current device so that it can set up internal handles to efficiently access them



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# File 'lib/origen_sim/simulator.rb', line 569

def define_pins
  dut.rtl_pins.each_with_index do |(name, pin), i|
    pin.simulation_index = i
    put("0^#{pin.rtl_name}^#{i}^#{pin.drive_wave.index}^#{pin.compare_wave.index}")
  end
  dut.rtl_pins.each do |name, pin|
    pin.apply_force
  end
end

#define_waves ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 595

def define_waves
  dut.timeset.drive_waves.each_with_index do |wave, i|
    put("6^#{i}^0^#{wave_to_str(wave)}")
  end
  dut.timeset.compare_waves.each_with_index do |wave, i|
    put("6^#{i}^1^#{wave_to_str(wave)}")
  end
end

#dut_version ⇒ Object

Returns the version of Origen Sim that the current DUT object was compiled with



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# File 'lib/origen_sim/simulator.rb', line 817

def dut_version
  @dut_version ||= begin
    put('i^')
    Origen::VersionString.new(get.strip)
  end
end

#end_simulation ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 604

def end_simulation
  put('8^')
end

#error(message) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 627

def error(message)
  simulation.logged_errors = true
  Origen.log.error message
end

#error_count ⇒ Object

Returns the current simulation error count



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# File 'lib/origen_sim/simulator.rb', line 633

def error_count
  peek("#{testbench_top}.debug.errors").to_i
end

#fetch_simulation_objects(options = {}) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 51

def fetch_simulation_objects(options = {})
  sid = options[:id] || id
  ldir = "#{Origen.root}/simulation/#{sid}"
  tmp_dir = "#{Origen.root}/tmp/origen_sim/tmp"
  if config[:rc_dir_url]
    unless config[:rc_version]
      puts "You must supply an :rc_version option when using :rc_dir_url (you can set this to something like 'Trunk' or 'master' if you want)"
      exit 1
    end
    if !File.exist?(compiled_dir) ||
       (File.exist?(compiled_dir) && Dir.entries(compiled_dir).size <= 2) ||
       (Origen.app.session.origen_sim[sid] != config[:rc_version]) ||
       options[:force]
      Origen.log.info "Fetching the simulation object for #{sid}..."
      Origen.app.session.origen_sim[sid] = nil # Clear this up front, if the checkout fails we won't know what we have
      FileUtils.rm_rf(tmp_dir) if File.exist?(tmp_dir)
      FileUtils.mkdir_p(tmp_dir)
      FileUtils.mkdir_p("#{Origen.root}/simulation")
      rc = Origen::RevisionControl.new remote: config[:rc_dir_url], local: tmp_dir
      rc.checkout "#{sid}.tar.gz", force: true, version: config[:rc_version]
      FileUtils.mv "#{tmp_dir}/#{sid}.tar.gz", "#{Origen.root}/simulation"
      FileUtils.rm_rf(ldir) if File.exist?(ldir)
      Dir.chdir "#{Origen.root}/simulation/" do
        system "tar -xvf #{sid}.tar.gz"
      end
      Origen.app.session.origen_sim[sid] = config[:rc_version]
    end
  else
    if !File.exist?(compiled_dir) ||
       (File.exist?(compiled_dir) && Dir.entries(compiled_dir).size <= 2)
      puts "There is no previously compiled simulation object in: #{compiled_dir}"
      exit 1
    end
  end
ensure
  FileUtils.rm_f "#{ldir}.tar.gz" if File.exist?("#{ldir}.tar.gz")
  FileUtils.rm_rf tmp_dir if File.exist?(tmp_dir)
end

#generic_run_cmd ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 43

def generic_run_cmd
  config[:generic_run_cmd]
end

#get ⇒ Object

Get a message from the simulator, will block until one is received



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# File 'lib/origen_sim/simulator.rb', line 479

def get
  simulation.socket.readline
end

#id ⇒ Object

The ID assigned to the current simulation target, falls back to to the Origen target name if an :id option is not supplied when instantiating the tester



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# File 'lib/origen_sim/simulator.rb', line 124

def id
  config[:id] || Origen.target.name
end

#interactive_shutdown ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 724

def interactive_shutdown
  @interactive_mode = true
end

#log_messages=(val) ⇒ Object

When set to true the simulator will log all messages it receives, note that this must be run in conjunction with -d supplied to the Origen command to actually see the messages



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# File 'lib/origen_sim/simulator.rb', line 27

def log_messages=(val)
  if val
    put('d^1')
  else
    put('d^0')
  end
end

#on_flow_end(options) ⇒ Object

At the end of a test program flow generation/simulation



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# File 'lib/origen_sim/simulator.rb', line 494

def on_flow_end(options)
  if simulation_tester? && options[:top_level]
    @flow_running = false
    simulation.completed_cleanly = true
    stop
  end
end

#on_flow_start(options) ⇒ Object

At the start of a test program flow generation/simulation



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# File 'lib/origen_sim/simulator.rb', line 484

def on_flow_start(options)
  if simulation_tester? && options[:top_level]
    @flow_running = true
    OrigenSim.flow = Origen.interface.flow.name
    start
    @pattern_count = 0
  end
end

#on_origen_shutdown ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 742

def on_origen_shutdown
  unless simulations.empty?
    failed = false
    stop if simulation_open?
    unless @interactive_mode
      if simulations.size == 1
        failed = simulation.failed?
      else
        failed_simulation_count = simulations.count(&:failed?)
        if failed_simulation_count > 0
          Origen.log.error "#{failed_simulation_count} of #{simulations.size} simulations failed!"
          failed = true
        end
      end
      if failed
        Origen.app.stats.report_fail
      else
        Origen.app.stats.report_pass
      end
    end
    puts
    if simulations.size == 1
      puts 'To view the simulation run the following command:'
      puts
      puts "  #{simulation.view_wave_command}"
    else
      puts 'To view the simulations run the following commands:'
      puts
      simulations.each do |simulation|
        if simulation.failed?
          puts "  #{simulation.view_wave_command}".red
        else
          puts "  #{simulation.view_wave_command}"
        end
      end
    end
    puts
    unless @interactive_mode
      failed ? exit(1) : exit(0)
    end
  end
end

#on_timeset_changed ⇒ Object

This will be called automatically whenever tester.set_timeset has been called



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# File 'lib/origen_sim/simulator.rb', line 556

def on_timeset_changed
  # Important that this is done first, since it is used to clear the pin
  # and wave definitions in the bridge
  set_period(dut.current_timeset_period)
  # Clear pins and waves
  define_pins
  define_waves
  # Apply the pin reset values / re-apply the existing states
  put_all_pin_states
end

#pattern_generated(path) ⇒ Object

This will be called at the end of every pattern, make sure the simulator is not running behind before potentially moving onto another pattern



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# File 'lib/origen_sim/simulator.rb', line 532

def pattern_generated(path)
  if simulation_tester?
    sync_up
    simulation.completed_cleanly = true unless @flow_running
  end
end

#peek(net) ⇒ Object

Returns the current value of the given net, or nil if the given path does not resolve to a valid node

The value is returned as an instance of Origen::Value



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# File 'lib/origen_sim/simulator.rb', line 641

def peek(net)
  # The Verilog spec does not specify that underlying VPI put method should
  # handle a part select, so some simulators do not handle it. Therefore we
  # deal with it here to ensure cross simulator compatibility.

  # http://rubular.com/r/eTVGzrYmXQ
  if net =~ /(.*)\[(\d+):?(\.\.)?(\d*)\]$/
    net = Regexp.last_match(1)
    msb = Regexp.last_match(2).to_i
    lsb = Regexp.last_match(4)
    lsb = lsb.empty? ? nil : lsb.to_i
  end

  sync_up
  put("9^#{clean(net)}")
  m = get.strip

  if m == 'FAIL'
    return nil
  else
    if msb
      # Setting a range of bits
      if lsb
        Origen::Value.new('b' + m[(m.size - 1 - msb)..(m.size - 1 - lsb)])
      else
        Origen::Value.new('b' + m[m.size - 1 - msb])
      end
    else
      Origen::Value.new('b' + m)
    end
  end
end

#poke(net, value) ⇒ Object

Forces the given value to the given net. Note that no error checking is done and no error will be communicated if an illegal net is supplied. The user should follow up with a peek if they want to verify that the poke was applied.



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# File 'lib/origen_sim/simulator.rb', line 678

def poke(net, value)
  # The Verilog spec does not specify that underlying VPI put method should
  # handle a part select, so some simulators do not handle it. Therefore we
  # deal with it here to ensure cross simulator compatibility.

  # http://rubular.com/r/eTVGzrYmXQ
  if !config[:vendor] == :synopsys && net =~ /(.*)\[(\d+):?(\.\.)?(\d*)\]$/
    path = Regexp.last_match(1)
    msb = Regexp.last_match(2).to_i
    lsb = Regexp.last_match(4)
    lsb = lsb.empty? ? nil : lsb.to_i

    v = peek(path)
    return nil unless v
    # Setting a range of bits
    if lsb
      upper = v >> (msb + 1)
      # Make sure value does not overflow
      value = value[(msb - lsb)..0]
      if lsb == 0
        value = (upper << (msb + 1)) | value
      else
        lower = v[(lsb - 1)..0]
        value = (upper << (msb + 1)) |
                (value << lsb) | lower
      end

    # Setting a single bit
    else
      if msb == 0
        upper = v >> 1
        value = (upper << 1) | value[0]
      else
        lower = v[(msb - 1)..0]
        upper = v >> (msb + 1)
        value = (upper << (msb + 1)) |
                (value[0] << msb) | lower
      end
    end
    net = path
  end

  sync_up
  put("b^#{clean(net)}^#{value}")
end

#post_process_run_cmd ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 47

def post_process_run_cmd
  config[:post_process_run_cmd]
end

#put(msg) ⇒ Object

Send the given message string to the simulator



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# File 'lib/origen_sim/simulator.rb', line 473

def put(msg)
  simulation.socket.write(msg + "\n")
end

#put_all_pin_states ⇒ Object

Applies the current state of all pins to the simulation



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# File 'lib/origen_sim/simulator.rb', line 547

def put_all_pin_states
  dut.rtl_pins.each do |name, pin|
    pin.reset_simulator_state
    pin.update_simulation
  end
end

#rtl_top ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 39

def rtl_top
  config[:rtl_top] || 'dut'
end

#run_cmd ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 197

def run_cmd
  case config[:vendor]
  when :icarus
    cmd = configuration[:vvp] || 'vvp'
    cmd += " -M#{compiled_dir} -morigen #{compiled_dir}/origen.vvp +socket+#{socket_id}"

  when :cadence
    input_file = "#{tmp_dir}/#{wave_file_basename}.tcl"
    if !File.exist?(input_file) || config_changed?
      Origen.app.runner.launch action:            :compile,
                               files:             "#{Origen.root!}/templates/probe.tcl.erb",
                               output:            tmp_dir,
                               check_for_changes: false,
                               quiet:             true,
                               options:           { dir: wave_dir, wave_file: wave_file_basename, force: config[:force], setup: config[:setup], depth: :all },
                               output_file_name:  "#{wave_file_basename}.tcl"
    end
    input_file_fast = "#{tmp_dir}/#{wave_file_basename}_fast.tcl"
    if !File.exist?(input_file_fast) || config_changed?
      fast_probe_depth = config[:fast_probe_depth] || 1
      Origen.app.runner.launch action:            :compile,
                               files:             "#{Origen.root!}/templates/probe.tcl.erb",
                               output:            tmp_dir,
                               check_for_changes: false,
                               quiet:             true,
                               options:           { dir: wave_dir, wave_file: wave_file_basename, force: config[:force], setup: config[:setup], depth: fast_probe_depth },
                               output_file_name:  "#{wave_file_basename}_fast.tcl"
    end
    save_config_signature
    wave_dir  # Ensure this exists since it won't be referenced above if the input file is already generated

    cmd = configuration[:irun] || 'irun'
    cmd += " -r origen -snapshot origen +socket+#{socket_id}"
    cmd += $use_fast_probe_depth ? " -input #{input_file_fast}" : " -input #{input_file}"
    cmd += " -nclibdirpath #{compiled_dir}"

  when :synopsys
    cmd = "#{compiled_dir}/simv +socket+#{socket_id} -vpd_file #{wave_file_basename}.vpd"

  when :generic
    # Generic tester requires that a generic_run_command option/block be provided.
    # This should either be a string, an array (which will be joined here), or a block that needs to return either
    # a string or array. In the event of a block, the block will be given the simulator.
    if generic_run_cmd
      cmd = generic_run_cmd
      if cmd.is_a?(Proc)
        cmd = cmd.call(self)
      end

      if cmd.is_a?(Array)
        # We'll join this together with the '; ' string. This means that each array element will be run
        # sequentially.
        cmd = cmd.join(' && ')
      elsif !cmd.is_a?(String)
        # If its Proc, it was already run, and if its a Array if would have gone into the other case.
        # So, this is either another proc, not an array and not a string, so not sure what to do with this.
        # Complain about the cmd.
        fail "OrigenSim :generic_run_cmd is of class #{generic_run_cmd.class}. It must be either an Array, String, or a Proc that returns an Array or String."
      end
    else
      fail 'OrigenSim Generic Toolchain/Vendor requires a :generic_run_cmd option/block to be provided. No options/block provided!'
    end

  else
    fail "Run cmd not defined yet for simulator #{config[:vendor]}"

  end

  # Allow the user to post-process the command. This should be a block which will be given two parameters:
  # 1. the command, and 2. the simulation object (self).
  # In the event of a generic tester, this *could* replace the launch command, but that's not the real intention,
  # since a simulator could be made that inherits from a generic simulator setup and still post process the command.
  cmd = post_process_run_cmd.call(cmd, self) if post_process_run_cmd
  fail "OrigenSim: :post_process_run_cmd returned object of class #{cmd.class}. Must return a String." unless cmd.is_a?(String)

  cmd
end

#run_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 336

def run_dir
  case config[:vendor]
  when :icarus
    d = File.join(wave_dir, wave_file_basename)
    FileUtils.mkdir_p(d)
    d
  when :synopsys
    wave_dir
  else
    tmp_dir
  end
end

#save_config_signature ⇒ Object

Locally saves a signature for the current config, this will cause config_changed? to return false until its contents change



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# File 'lib/origen_sim/simulator.rb', line 812

def save_config_signature
  Origen.app.session.origen_sim["#{id}_config"] = config
end

#set_period(period_in_ns) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 608

def set_period(period_in_ns)
  period_in_ps = period_in_ns * time_conversion_factor * (config[:time_factor] || 1)
  put("1^#{period_in_ps}")
end

#simulation_open? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 349

def simulation_open?
  @simulation_open
end

#simulation_tester? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 789

def simulation_tester?
  (tester && tester.is_a?(OrigenSim::Tester))
end

#socket_id ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 785

def socket_id
  simulation.socket_id
end

#start ⇒ Object

Starts up the simulator process



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# File 'lib/origen_sim/simulator.rb', line 354

def start
  Origen.log.level = :verbose if Origen.debugger_enabled?
  @simulation_open = true
  @simulation = Simulation.new(wave_file_basename, view_wave_command)
  simulations << @simulation

  fetch_simulation_objects

  cmd = run_cmd + ' & echo \$!'

  launch_simulator = %(
    require 'open3'
    require 'socket'
    require 'io/wait'
    require 'origen'

    pid = nil

    def kill_simulation(pid)
      begin
        # If the process already finished, then we will see an Errno exception.
        # It does not harm anything, but looks ugly, so catch it here and ignore.
        Process.kill('KILL', pid)
      rescue Errno::ESRCH => e
      end
      exit!
    end

    status = UNIXSocket.new('#{simulation.socket_id(:status)}')
    stdout_socket = UNIXSocket.new('#{simulation.socket_id(:stdout)}')
    stderr_socket = UNIXSocket.new('#{simulation.socket_id(:stderr)}')
    heartbeat = UNIXSocket.new('#{simulation.socket_id(:heartbeat)}')

    begin

      status.puts('Starting the simulator...')

      Dir.chdir '#{run_dir}' do
        Open3.popen3('#{cmd}') do |stdin, stdout, stderr, thread|
          status.puts('The simulator has started')
          pid = stdout.gets.strip.to_i
          status.puts(pid.to_s)

          # Listen for a heartbeat from the main Origen process every 5 seconds, kill the
          # simulator after two missed heartbeats
          Thread.new do
            missed_heartbeats = 0
            loop do
              sleep 5

              # If the socket read hangs, count that as a reason to shutdown
              socket_read = false
              Thread.new do
                sleep 1
                kill_simulation(pid) unless socket_read
              end

              if heartbeat.ready?
                while heartbeat.ready? do
                  heartbeat.gets
                end
                missed_heartbeats = 0
              else
                missed_heartbeats += 1
              end
              socket_read = true
              if missed_heartbeats > 1
                kill_simulation(pid)
              end
            end
          end

          threads = []
          threads << Thread.new do
            until (line = stdout.gets).nil?
              stdout_socket.puts line
            end
          end
          threads << Thread.new do
            until (line = stderr.gets).nil?
              stderr_socket.puts line
            end
          end
          threads.each(&:join)
        end
      end

      status.puts 'The simulator has finished'

    ensure
      # Make sure this process never finishes and leaves the simulator running
      kill_simulation(pid) if pid
    end
  )

  Origen.log.debug 'Starting the simulation monitor...'

  simulator_parent_process = spawn("ruby -e \"#{launch_simulator}\"")
  Process.detach(simulator_parent_process)

  simulation.open(config[:startup_timeout] || 60) # This will block until the simulation process has started

  # The VPI extension will send 'READY!' when it starts, make sure we get it before proceeding
  data = get
  unless data.strip == 'READY!'
    simulation.failed_to_start = true
    simulation.log_results
    exit  # Assume it is not worth trying another pattern in this case, some kind of environment/config issue
  end
  # Tick the simulation on, this seems to be required since any VPI puts operations before
  # the simulation has started are not applied.
  # Note that this is not setting a tester timeset, so the application will still have to
  # do that before generating any vectors.
  set_period(100)
  cycle(1)
  Origen.listeners_for(:simulation_startup).each(&:simulation_startup)
end

#stop ⇒ Object

Stop the simulator



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# File 'lib/origen_sim/simulator.rb', line 729

def stop
  @simulation_open = false
  simulation.error_count = error_count
  Origen.listeners_for(:simulation_shutdown).each(&:simulation_shutdown)
  end_simulation
  # Give the simulator time to shut down
  sleep 0.1 while simulation.running?
  simulation.close
  simulation.log_results unless Origen.current_command == 'interactive'
rescue
  simulation.completed_cleanly = false
end

#sync ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 793

def sync
  put('f')
  @sync_active = true
  yield
  put('g')
  @sync_active = false
end

#sync_active? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/origen_sim/simulator.rb', line 801

def sync_active?
  @sync_active
end

#sync_up ⇒ Object

Blocks the Origen process until the simulator indicates that it has processed all operations up to this point



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# File 'lib/origen_sim/simulator.rb', line 619

def sync_up
  put('7^')
  data = get
  unless data.strip == 'OK!'
    fail 'Origen and the simulator are out of sync!'
  end
end

#testbench_top ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 35

def testbench_top
  config[:testbench_top] || 'origen'
end

#tmp_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 128

def tmp_dir
  @tmp_dir ||= begin
    d = "#{Origen.root}/tmp/origen_sim/#{id}/#{config[:vendor]}"
    FileUtils.mkdir_p(d)
    d
  end
end

#view_wave_command ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 287

def view_wave_command
  cmd = nil
  case config[:vendor]
  when :icarus
    edir = Pathname.new(wave_config_dir).relative_path_from(Pathname.pwd)
    cmd = "cd #{edir} && "
    cmd += configuration[:gtkwave] || 'gtkwave'
    dir = Pathname.new(wave_dir).relative_path_from(edir.expand_path)
    cmd += " #{dir}/#{wave_file_basename}/dump.vcd "
    f = Pathname.new(wave_config_file).relative_path_from(edir.expand_path)
    cmd += " --save #{f} &"

  when :cadence
    edir = Pathname.new(wave_config_dir).relative_path_from(Pathname.pwd)
    cmd = "cd #{edir} && "
    cmd += configuration[:simvision] || 'simvision'
    dir = Pathname.new(wave_dir).relative_path_from(edir.expand_path)
    cmd += " #{dir}/#{wave_file_basename}/#{wave_file_basename}.dsn #{dir}/#{wave_file_basename}/#{wave_file_basename}.trn"
    f = Pathname.new(wave_config_file).relative_path_from(edir.expand_path)
    cmd += " -input #{f} &"

  when :synopsys
    edir = Pathname.new(wave_config_dir).relative_path_from(Pathname.pwd)
    cmd = "cd #{edir} && "
    cmd += configuration[:dve] || 'dve'
    dir = Pathname.new(wave_dir).relative_path_from(edir.expand_path)
    cmd += " -vpd #{dir}/#{wave_file_basename}.vpd"
    f = Pathname.new(wave_config_file).relative_path_from(edir.expand_path)
    cmd += " -session #{f}"
    cmd += ' &'

  when :generic
    # Since this could be anything, the simulator will need to set this up. But, once it is, we can print it here.
    if config[:view_waveform_cmd]
      cmd = config[:view_waveform_cmd]
    else
      Origen.log.warn 'OrigenSim cannot provide a view-waveform command for a :generic vendor.'
      Origen.log.warn 'Please supply a view-waveform command though the :view_waveform_cmd option during the OrigenSim::Generic instantiation.'
    end

  else
    # Print a warning stating an unknown vendor was reached here.
    # This shouldn't happen, but just in case.
    Origen.log.warn "OrigenSim does not know the command to view waveforms for vendor :#{config[:vendor]}!"

  end
  cmd
end

#wave_config_dir ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 154

def wave_config_dir
  @wave_config_dir ||= begin
    d = "#{Origen.root}/config/waves/#{id}"
    FileUtils.mkdir_p(d)
    d
  end
end

#wave_config_ext ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 186

def wave_config_ext
  case config[:vendor]
  when :icarus
    'gtkw'
  when :cadence
    'svcf'
  when :synopsys
    'tcl'
  end
end

#wave_config_file ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 162

def wave_config_file
  @wave_config_file ||= begin
    f = "#{wave_config_dir}/#{User.current.id}.#{wave_config_ext}"
    unless File.exist?(f)
      # Take a default wave if one has been set up
      d = "#{wave_config_dir}/default.#{wave_config_ext}"
      if File.exist?(d)
        FileUtils.cp(d, f)
      else
        # Otherwise seed it with the latest existing setup by someone else
        d = Dir.glob("#{wave_config_dir}/*.#{wave_config_ext}").max { |a, b| File.ctime(a) <=> File.ctime(b) }
        if d
          FileUtils.cp(d, f)
        else
          # We tried our best, start from scratch
          d = "#{Origen.root!}/templates/empty.#{wave_config_ext}"
          FileUtils.cp(d, f) if File.exist?(d)
        end
      end
    end
    f
  end
end

#wave_dir(subdir = nil) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 146

def wave_dir(subdir = nil)
  @wave_dir ||= begin
    d = "#{Origen.root}/waves/#{id}"
    FileUtils.mkdir_p(d)
    d
  end
end

#wave_file_basename ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 275

def wave_file_basename
  if OrigenSim.flow
    OrigenSim.flow.to_s
  else
    if Origen.app.current_job
      @last_wafe_file_basename = Pathname.new(Origen.app.current_job.output_file).basename('.*').to_s
    else
      @last_wafe_file_basename
    end
  end
end

#wave_to_str(wave) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 579

def wave_to_str(wave)
  wave.evaluated_events.map do |time, data|
    time = time * time_conversion_factor * (config[:time_factor] || 1)
    if data == :x
      data = 'X'
    elsif data == :data
      data = wave.drive? ? 'D' : 'C'
    end
    if data == 'C'
      "#{time}_#{data}_#{time + (time_conversion_factor * (config[:time_factor] || 1))}_X"
    else
      "#{time}_#{data}"
    end
  end.join('_')
end

#write_comment(comment) ⇒ Object 



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# File 'lib/origen_sim/simulator.rb', line 539

def write_comment(comment)
  # Not sure what the limiting factor here is, the comment memory in the test bench should
  # be able to handle 1024 / 8 length strings, but any bigger than this hangs the simulation
  comment = comment[0..96]
  put("c^#{comment}")
end