Can you spot where I'm leaking?

Director Class
#1

I appear to be leaking moving between two menu scenes:

main menu

module(..., package.seeall)  
function new()  
 collectgarbage('collect')  
 print( "main, MemUsage: " .. collectgarbage("count") )  
  
 local local\_group = display.newGroup()  
  
 ----------------------------------------------------------------------------------------   
 function ChangeScene(e)  
 if e.target.GameMode then  
 \_G.GAME\_MODE = e.target.GameMode  
 end  
  
 CleanupButtonListeners()  
 director:changeScene(e.target.Scene)  
 end  
  
 ----------------------------------------------------------------------------------------   
 function OpenFeintDashboard()  
 \_G.openfeint.launchDashboard()  
 end  
  
 ----------------------------------------------------------------------------------------   
 function SendEmail()  
 system.openURL("")  
 end  
  
 ----------------------------------------------------------------------------------------   
 function ViewWebsite()  
 system.openURL("")  
 end  
  
 ----------------------------------------------------------------------------------------   
 -- buttons  
 local title\_screen  
 local score\_attack  
 local time\_attack  
 local endless  
 local scores  
 local options  
 local help  
 local mail  
 local web  
  
 ----------------------------------------------------------------------------------------   
 function init()  
  
 local buttonfactory = require "buttonfactory"  
  
 title\_screen = display.newImageRect('titlescreen.png', 320, 480)  
 title\_screen:setReferencePoint(display.TopLeftReferencePoint)  
 title\_screen.x = 0  
 title\_screen.y = 0  
 local\_group:insert(title\_screen)  
  
 local x\_pos = 15  
  
 score\_attack = buttonfactory.GetNewButton('Score Attack', "button", "button\_over", ChangeScene)  
 score\_attack:setReferencePoint(display.TopLeftReferencePoint)  
 score\_attack.x = x\_pos  
 score\_attack.y = 137.5  
 score\_attack.Scene = 'scoreattackmenu'  
 score\_attack.GameMode = 'SCORE\_ATTACK'  
  
 local\_group:insert(score\_attack)  
  
 time\_attack = buttonfactory.GetNewButton('Time Attack', "button", "button\_over", ChangeScene)  
 time\_attack:setReferencePoint(display.TopLeftReferencePoint)  
 time\_attack.x = x\_pos  
 time\_attack.y = 185.  
 time\_attack.Scene = 'timeattackmenu'  
 time\_attack.GameMode = 'TIME\_ATTACK'  
  
 local\_group:insert(time\_attack)   
  
 endless = buttonfactory.GetNewButton('Endless', "button", "button\_over", ChangeScene)  
 endless:setReferencePoint(display.TopLeftReferencePoint)  
 endless.x = x\_pos  
 endless.y = 234.  
 endless.Scene = 'gamemain'  
 endless.GameMode = 'ENDLESS'  
  
 local\_group:insert(endless)  
  
 scores = buttonfactory.GetNewButton('', "button\_of", "button\_of\_over", OpenFeintDashboard)  
 scores:setReferencePoint(display.TopLeftReferencePoint)  
 scores.x = x\_pos  
 scores.y = 283.  
  
 local\_group:insert(scores)  
  
 options = buttonfactory.GetNewButton('Options', "button", "button\_over", ChangeScene)  
 options:setReferencePoint(display.TopLeftReferencePoint)  
 options.x = x\_pos  
 options.y = 332.  
 options.Scene = 'options'  
  
 local\_group:insert(options)  
  
 help = buttonfactory.GetNewButton('', "help", "help\_over", ChangeScene)  
 help:setReferencePoint(display.CenterReferencePoint)  
 help.x = centerX - 53  
 help.y = 415  
 help.Scene = 'options'  
  
 local\_group:insert(help)  
  
 mail = buttonfactory.GetNewButton('', "mail", "mail\_over", SendEmail)  
 mail:setReferencePoint(display.CenterReferencePoint)  
 mail.x = centerX  
 mail.y = 415  
  
 local\_group:insert(mail)  
  
 web = buttonfactory.GetNewButton('', "web", "web\_over", ViewWebsite)  
 web:setReferencePoint(display.CenterReferencePoint)  
 web.x = centerX + 53  
 web.y = 415  
  
 local\_group:insert(web)  
  
 local copyright\_text = display.newText("Blah Blah Blah", 13)  
 copyright\_text:setTextColor(255, 255, 255)  
  
 local\_group:insert(copyright\_text)  
  
 local rights\_text = display.newText("All rights reservered", centerX, 465, 'Varela', 13)  
 rights\_text:setTextColor(255, 255, 255)  
  
 local\_group:insert(rights\_text)   
 end  
  
 ----------------------------------------------------------------------------------------   
 function CleanupButtonListeners()  
 title\_screen:removeEventListener("touch", title\_screen)  
 score\_attack:removeEventListener("touch", score\_attack)  
 time\_attack:removeEventListener("touch", time\_attack)  
 endless:removeEventListener("touch", endless)  
 scores:removeEventListener("touch", scores)  
 options:removeEventListener("touch", options)  
 help:removeEventListener("touch", help)  
 mail:removeEventListener("touch", mail)  
 web:removeEventListener("touch", web)  
 end  
  
 init()  
  
 return local\_group  
end

options menu

module(..., package.seeall)  
  
----------------------------------------------------------------------------------------  
function new()  
  
 collectgarbage('collect')  
 print("options, MemUsage: " .. collectgarbage("count") )  
  
 local local\_group = display.newGroup()  
  
 ----------------------------------------------------------------------------------------  
 local title\_screen = display.newImageRect('options\_menu.png', 320, 480)  
 title\_screen:setReferencePoint(display.TopLeftReferencePoint)  
 title\_screen.x = 0  
 title\_screen.y = 0  
 local\_group:insert(title\_screen)  
  
 ----------------------------------------------------------------------------------------   
 -- add volume controls  
 local StartX = 50  
 local EndX = 270  
  
 local music\_text = display.newText("Music", 80, 120, 'Varela', 20)  
 music\_text:setTextColor(255, 255, 255)  
  
 local music\_y = 160  
  
 local music\_line = display.newLine(StartX, music\_y, EndX, music\_y)   
 music\_line:setColor(255, 255, 255)  
 music\_line.width = 1  
  
 local sound\_text = display.newText("Sound FX", 100, 200, 'Varela', 20)  
 sound\_text:setTextColor(255, 255, 255)  
  
 local sound\_y = 240  
  
 local sound\_line = display.newLine(StartX, sound\_y, EndX, sound\_y)   
 sound\_line:setColor(255, 255, 255)  
 sound\_line.width = 1  
  
 local\_group:insert(music\_text)  
 local\_group:insert(music\_line)  
 local\_group:insert(sound\_text)  
 local\_group:insert(sound\_line)  
  
 ----------------------------------------------------------------------------------------   
 local back\_button  
 local credits\_button  
  
 ----------------------------------------------------------------------------------------  
 function ChangeScene(e)  
 if e.target.Scene then  
 \_G.GameAudio.SaveSoundSettings()  
  
 back\_button:removeEventListener("touch", back\_button)  
 credits\_button:removeEventListener("touch", credits\_button)  
  
 director:changeScene(e.target.Scene)  
 end  
 end  
  
 ----------------------------------------------------------------------------------------  
 back\_button = buttonfactory.GetNewButton('Back', "button\_medium", "button\_medium\_over", ChangeScene)  
 back\_button.x = centerX  
 back\_button.y = screenHeight \* 0.80  
 back\_button.Scene = 'mainmenu'  
  
 local\_group:insert(back\_button)  
  
 credits\_button = buttonfactory.GetNewButton('Credits', "button\_medium", "button\_medium\_over", ChangeScene)  
 credits\_button.x = centerX  
 credits\_button.y = screenHeight \* 0.70  
 credits\_button.Scene = 'credits'  
  
 local\_group:insert(credits\_button)  
  
 return local\_group  
end

output:

  
Output string :: main, MemUsage: 197.5576171875  
  
Output string :: options, MemUsage: 234.517578125  
  
Output string :: main, MemUsage: 238.8447265625  
  
Output string :: options, MemUsage: 242.0849609375  
  
Output string :: main, MemUsage: 239.2744140625  
  
Output string :: options, MemUsage: 242.5615234375

I’m at a complete loss on this one, I cannot see where I am leaking [import]uid: 68937 topic_id: 12808 reply_id: 312808[/import]

#2

This is with director 1.2 btw. [import]uid: 68937 topic_id: 12808 reply_id: 46967[/import]

#3

Add

local_group:removeSelf() below the director change scene call in both your ChangeScene functions [import]uid: 6981 topic_id: 12808 reply_id: 46971[/import]

#4

Part of what I did to clean up the memory leaks in my app (using Director 1.2) was to use Jonathan Beebe’s cleangroup replacement.

http://jonbeebe.tumblr.com/post/3760389212/proper-group-cleaning-in-corona-script-download

[import]uid: 17085 topic_id: 12808 reply_id: 47018[/import]