Class: Gestalt

Inherits:
Object
  • Object
show all
Defined in:
lib/gestalt.rb,
lib/gestalt/call.rb

Defined Under Namespace

Classes: Call

Constant Summary collapse

VERSION = 
'0.0.11'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Gestalt

Returns a new instance of Gestalt.



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# File 'lib/gestalt.rb', line 12

def initialize(options = {})
  options = {
    'call'      => true,
    'c-call'    => false,
    'formatador' => Formatador.new
  }.merge!(options)

  @traceable_calls = []
  @traceable_returns = []
  if options['call']
    @traceable_calls << 'call'
    @traceable_returns << 'return'
  end
  if options ['c-call']
    @traceable_calls << 'c-call'
    @traceable_returns << 'c-return'
  end

  @bindings = []
  @calls = []
  @formatador = options['formatador']
  @stack = []
  @totals = {}
end

Instance Attribute Details

#bindings ⇒ Object

Returns the value of attribute bindings.



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

def bindings
  @bindings
end

#calls ⇒ Object

Returns the value of attribute calls.



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

def calls
  @calls
end

Class Method Details

.profile(options = {}, &block) ⇒ Object 



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# File 'lib/gestalt.rb', line 120

def self.profile(options = {}, &block)
  gestalt = new(options)
  gestalt.run(&block)
  gestalt.display_profile
end

.trace(options = {}, &block) ⇒ Object 



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# File 'lib/gestalt.rb', line 126

def self.trace(options = {}, &block)
  gestalt = new(options)
  gestalt.run(&block)
  gestalt.display_calls
end

Instance Method Details

#display_calls ⇒ Object 



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# File 'lib/gestalt.rb', line 37

def display_calls
  @formatador.display_line
  condensed = []
  total = 0.0
  for call in @calls
    if condensed.last && condensed.last == call
      condensed.last.durations.concat(call.durations)
    else
      condensed << call
    end
    total += call.duration
  end
  for call in condensed
    call.display(total, @formatador)
  end
  @formatador.display_line
end

#display_profile ⇒ Object 



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# File 'lib/gestalt.rb', line 55

def display_profile
  for call in calls
    parse_call(call)
  end

  table = []
  for key, value in @totals
    table << {
      :action => "#{value[:occurances]}x #{key}",
      :duration => format("%.6f", value[:duration])
    }
  end
  table = table.sort {|x,y| y[:duration] <=> x[:duration]}

  @formatador.display_line
  @formatador.display_table(table)
  @formatador.display_line
end

#run(&block) ⇒ Object 



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# File 'lib/gestalt.rb', line 74

def run(&block)
  Kernel.set_trace_func(
    lambda do |event, file, line, id, binding, classname|
      @bindings << binding
      case event
      when *@traceable_calls
        call = Gestalt::Call.new(
          :action     => "#{classname}##{id}",
          :location   => "#{file}:#{line}"
        )
        unless @stack.empty?
          @stack.last.children.push(call)
        end
        @stack.push(call)
      when *@traceable_returns
        unless @stack.empty? # we get one of these when we set the trace_func
          call = @stack.pop
          call.finish
          if @stack.empty?
            @calls << call
          end
        end
      end
    end
  )
  begin
    value = yield
  rescue StandardError, Interrupt => value
    # noop
  end
  Kernel.set_trace_func(nil)
  @bindings.pop # pop Kernel#set_trace_func(nil)
  @bindings.pop # pop Gestalt.run
  @stack.pop # pop Kernel#set_trace_func(nil)
  unless @stack.empty?
    @stack.last.children.pop # pop Kernel#set_trace_func(nil)
  end
  while call = @stack.pop # leftovers, not sure why...
    call.finish
    if @stack.empty?
      @calls << call
    end
  end
  value
end