Only unreachable objects will be garbage-collected. As long as you still
have a (direct or indirect) reference to them, rest assured that they will
stay around.
On Wed, May 21, 2014 at 2:13 PM, Si Robertson <retromodu...@gmail.com>wrote:
> I think I understand. The concern I have is nothing within the closure
> would be attached to anything outside of the closure, except for a few
> persistent event listeners, so I'm unsure if V8 would flag everything as
> volatile and/or garbage collect a load of objects because they are only
> referenced by other objects within the closure. Would V8 not see the entire
> closure as being eligible for garbage collection?
>
>
> On Wednesday, 21 May 2014 10:29:45 UTC+1, Andreas Rossberg wrote:
>
>> On 21 May 2014 06:43, Si Robertson <retrom...@gmail.com> wrote:
>> > Let's say someone has quite a large amount of code, possibly for a game
>> or
>> > application, and they wrapped all of that code in a closure ...
>> >
>> > (function(){
>> > // all code goes here
>> > })()
>> >
>> > Would that cause any problems with V8 as far as optimisation and/or
>> garbage
>> > collection is concerned?
>>
>> If it is the closure environment you are worrying about, then this
>> will be empty (assuming this expression occurs on the toplevel). A
>> closure only closes over lexical or local variables, and (before ES6)
>> the toplevel has neither.
>>
>> Generated code might actually be better, because all outermost
>> variables of 'code' become local instead of polluting the global
>> object, which should be more efficient in both time and space.
>>
>> /Andreas
>>
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