class garbage collection question

Performance & Profiling Runtime Performance
1

Hi :slight_smile:

Let’s say I have a javascript class in a script on a gameobject.

If I create an instance of the class into a variable and then set the variable back to null, does that effectively destroy the instanced class or is it hanging out in memory somewhere?

for example:

myscript.js

//var declarations, etc...
var myClass : UbahClass;

function Update()
{
// update stuff
}

function OnGUI()
{
// gooey stuff

 if (GUI.Button(Rect(10,10,100,100),"Oobafy")
 {
  myClass = new UbahClass;
 }

 if (GUI.Button(Rect(150,10,100,100),"Reech!")
 {
  print(myClass.blah+myClass.bleh);
 }
 
 if (GUI.Button(Rect(300,10,100,100),"Po!")
 {
  myClass.DeUbah;
  print(myClass.blah+myClass.bleh+ "You is Po!");
 }

 if (GUI.Button(Rect(450,10,100,100),"No Mo Po!")
 {
  myClass = null;
  print("You No Mo Po!");

//// Is the class instance still in memory without a handle or is it truly gone and memory released?

 }


}

class UbahClass
{
 var blah;
 var bleh;

  function UbahClass()
  {
   blah = "One Beeelion Dollars";
   bleh = blah; // now you have 2 beelion dollars!
  }

  function DeUbah()
  {
   bleh = "penny";
   blah = bleh; // now you have two pennies!
  }
}

function Start()
{
 //start stuff, etc
}

Thanks,

Jason

2

Well the way the garbage collection works is that if the code can not find any more references to a particular object, it will then be deleted so if that is you only reference to that object, then yes, the garbage collection will delete that object next time it cleans up.