Gc Atomic

Garbage Collection Alex Harui Flex SDK Adobe Systems , Inc.

Garbage Collection: Atomic Model ,[object Object],[object Object],[object Object],[object Object]

Flash Player Memory Management ,[object Object],[object Object],[object Object],[object Object],[object Object],256 bytes 256 bytes 256 bytes 256 bytes 256 bytes 256 bytes 256 bytes 256 bytes 256 bytes … 256 bytes 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Flash Player Memory Management ,[object Object],Used Unused 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes … 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Does Not Run Constantly ,[object Object],[object Object],[object Object],Used Unused System.totalMemory = 100000 bytes 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Does Not Run Constantly ,[object Object],[object Object],Used Unused System.totalMemory = 100512 bytes foo = new Foo() 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Does Not Run Constantly ,[object Object],[object Object],[object Object],Used Unused System.totalMemory = 100512 bytes foo = new Foo(); foo = null; Unused But not GC’d 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Does Not Run Constantly ,[object Object],[object Object],Used Unused System.totalMemory = 101024 bytes foo = new Foo(); foo = null; foo = new Foo(); Unused But not GC’d 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Is Only Triggered By Allocations ,[object Object],[object Object],Used Unused Unused But not GC’d Almost out!, Run GC! 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Is Only Triggered By Allocations ,[object Object]

Garbage Collection Does Not Run Completely ,[object Object],[object Object],[object Object],Used Unused Unused But not GC’d Before 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes … 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Does Not Run Completely ,[object Object],[object Object],[object Object],Used Unused Unused But not GC’d After 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes … 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Does Not Always Free OS Memory ,[object Object],[object Object],[object Object],Used Unused Unused But not GC’d Before 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes … 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Does Not Always Free OS Memory ,[object Object],[object Object],[object Object],Used Unused Unused But not GC’d After Eligible for Release to OS 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes … 512 bytes 512 bytes 512 bytes 512 bytes 512 bytes …

Garbage Collection Is Not Predictable ,[object Object],[object Object]

Detecting Memory Leaks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Detecting Memory Leaks ,[object Object],[object Object],[object Object],[object Object]

Detecting Memory Leaks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Where To Find Memory Leaks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How Garbage Collection Works ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How Garbage Collection Works ,[object Object],[object Object],[object Object],Used Unused Unused But not GC’d .root .application Application Stage SystemManager Model Removed Popup VBox Popup’s Button Button

How Garbage Collection Works ,[object Object],[object Object],[object Object],Used Unused Unused But not GC’d .application Application ApplicationDomain mx.core.Application Model Removed Popup VBox Popup’s Button Button

How Garbage Collection Works ,[object Object],[object Object],Used Unused Unused But not GC’d Stack Dialog instance Application instance ApplicationDomain class Dialog popUp return address Dialog this

Removing EventListeners ,[object Object],[object Object],[object Object],Used Unused Unused But not GC’d .root .application .child Application clickHandler Stage SystemManager ChildComponent clickListeners

Removing EventListeners ,[object Object],[object Object],Used Unused Unused But not GC’d .root .application Application clickHandler Stage SystemManager ChildComponent clickListeners

Removing EventListeners ,[object Object],[object Object],[object Object],[object Object],Used Unused Unused But not GC’d .root .popupChildren PopUp mouseUpHandler Stage SystemManager mouseUpListeners

Removing EventListeners ,[object Object],[object Object],[object Object],[object Object],Used Unused Unused But not GC’d .root .popupChildren weak ref PopUp mouseUpHandler Stage SystemManager mouseUpListeners

Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Gc Atomic

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