Class: MemInspect::AquatermViewer

Inherits:
Viewer
  • Object
show all
Defined in:
lib/mem_inspect/aquaterm_viewer.rb

Overview

Prints plots of memory to an AquaTerm window.

Requires RubyCocoa and the AquaTerm framework.

Constant Summary collapse

BLACK =

unalloc

0
WHITE = 
1
RED = 
2
GREEN = 
3
GRAY =

free

4

Instance Method Summary collapse

Methods inherited from Viewer

#coords_for

Constructor Details

#initialize(width, height) ⇒ AquatermViewer

Creates a new AquatermViewer.



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# File 'lib/mem_inspect/aquaterm_viewer.rb', line 23

def initialize(width, height)
  super

  @adapter = OSX::AQTAdapter.alloc.init
  @adapter.openPlotWithIndex 1
  @adapter.setPlotSize [@width, @height]
  @adapter.setPlotTitle 'Memory Map'

  @adapter.setColormapEntry_red_green_blue 0, 0.0, 0.0, 0.0 # black
  @adapter.setColormapEntry_red_green_blue 1, 1.0, 1.0, 1.0 # white
  @adapter.setColormapEntry_red_green_blue 2, 1.0, 0.0, 0.0 # red
  @adapter.setColormapEntry_red_green_blue 3, 0.0, 1.0, 0.0 # green
  @adapter.setColormapEntry_red_green_blue 4, 0.7, 0.7, 0.7 # gray
end

Instance Method Details

#close ⇒ Object

Close the plot



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# File 'lib/mem_inspect/aquaterm_viewer.rb', line 79

def close
  @adapter.closePlot
end

#draw ⇒ Object

Draws a plot and renders it in the active plot window.



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# File 'lib/mem_inspect/aquaterm_viewer.rb', line 41

def draw
  fill_background
  color = BLACK
  last_color = color
  x = 0
  y = 0

  @mem_inspect.walk do |address, size, object|
    x, y = coords_for address

    color = case object
            when :__free then GRAY
            when :__node then RED
            when :__varmap, :__scope, :__unknown then WHITE
            else GREEN
            end

    @adapter.takeColorFromColormapEntry color unless color == last_color
    @adapter.moveToPoint [x, y] if x == 0
    @adapter.addLineToPoint [x + 1, y + 1]
    last_color = color
  end

ensure # coords_for raises when out-of-bounds
  @adapter.renderPlot
end

#fill_background ⇒ Object

Fills the background of the plot, erasing the current contents.



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# File 'lib/mem_inspect/aquaterm_viewer.rb', line 71

def fill_background
  @adapter.takeColorFromColormapEntry BLACK
  @adapter.addFilledRect [0, 0, @width, @height] # background
end