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-Following are examples of running js_objgc.d.
-
-This script reports on the garbage collection of Java objects. That is it
-will keep track of when resources are allocated to an object, and when
-resources are freed from an object. It is useful for providing information on
-when garbage collection is not working correctly, as this can cause the
-browser to have a memory leak.
-
-We trace object creation (+1) and destruction (-1), and provide a summary
-each second of the running tally of the object class and originating filename.
-
-Here we can see it running on Code/JavaScript/func_clock.html
-
-# js_objgc.d
-Tracing... Hit Ctrl-C to end.
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:24
- func_clock.html 1 Date
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:25
- func_clock.html 2 Date
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:26
- func_clock.html 3 Date
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:27
- func_clock.html 4 Date
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:28
- func_clock.html 5 Date
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:29
- browser.js 3 Function
- <null> 5 Function
- func_clock.html 6 Date
- <null> 7 MouseEvent
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:30
- browser.js 3 Function
- <null> 5 Function
- func_clock.html 7 Date
- <null> 10 MouseEvent
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:31
- <null> 1 Constructor
- <null> 1 HTMLBodyElement
- <null> 1 XPCNativeWrapper
- <null> 1 XPC_WN_ModsAllowed_Proto_JSClass
- browser.js 1 Array
- browser.js 1 XPCNativeWrapper
- popup.xml 1 Array
- func_clock.html 7 Date
- <null> 13 MouseEvent
- <null> 18 Function
- browser.js 20 Function
-
- FILE TOTAL CLASS 2007 Sep 23 22:59:32
- <null> 1 BoxObject
- <null> 1 Constructor
- <null> 1 HTMLBodyElement
- <null> 1 NodeList
- <null> 1 UIEvent
- <null> 1 XPCNativeWrapper
- <null> 1 XPC_WN_ModsAllowed_Proto_JSClass
- <null> 1 chrome://global/content/bindings/menu.xml#menu-iconic 84ff45a
- <null> 1 chrome://global/content/bindings/menu.xml#menu-iconic 8befbba
- bookmarksMenu.js 1 Function
- browser.js 1 Array
- browser.js 1 XPCNativeWrapper
- popup.xml 1 Function
- scrollbox.xml 1 Function
- <null> 2 Event
- popup.xml 2 Array
- bookmarks.js 3 With
- firebug-service.js 3 Object
- bookmarks.js 6 Object
- bookmarks.js 6 XPCWrappedNative_NoHelper
- func_clock.html 8 Date
- firebug-service.js 10 Function
- <null> 15 MouseEvent
- bookmarks.js 19 Error
- browser.js 20 Function
- bookmarks.js 22 Function
- <null> 39 XPCWrappedNative_NoHelper
- <null> 44 Function
- <null> 60 RegExp
- <null> 191 XULElement
-
-[... 39 seconds deleted ...]
-
- FILE TOTAL CLASS 2007 Sep 23 23:00:10
- <null> 1 HTMLBodyElement
- <null> 1 HTMLCollection
- <null> 1 TreeColumns
- <null> 1 XPCNativeWrapper
- <null> 1 XPC_WN_NoMods_Proto_JSClass
- <null> 1 XULTreeBuilder
- <null> 1 chrome://global/content/bindings/menu.xml#menu-iconic 84ff45a
- <null> 1 chrome://global/content/bindings/menu.xml#menu-iconic 8befbba
- <null> 1 chrome://global/content/bindings/tree.xml#treebody 84caa3a
- <null> 1 chrome://global/content/bindings/tree.xml#treebody 84e3a72
- <null> 1 nsXPCComponents_Interfaces
- <null> 1 nsXPCComponents_Results
- bookmarksMenu.js 1 Function
- browser.js 1 Array
- browser.js 1 XPCNativeWrapper
- browser.js 1 XPC_WN_NoMods_Proto_JSClass
- nsUpdateService.js 1 XPC_WN_NoMods_Proto_JSClass
- nsUpdateService.js 1 nsJSCID
- popup.xml 1 Function
- scrollbar.xml 1 String
- scrollbox.xml 1 Function
- tree.xml 1 Array
- <null> 2 Constructor
- <null> 2 UIEvent
- <null> 2 XPC_WN_ModsAllowed_Proto_JSClass
- <null> 2 nsXPCComponents_Classes
- browser.js 2 nsJSCID
- browser.js 2 nsJSIID
- utilityOverlay.js 2 nsJSCID
- utilityOverlay.js 2 nsJSIID
- <null> 3 Array
- <null> 3 NodeList
- nsUpdateService.js 3 Array
- nsUpdateService.js 3 Object
- nsUpdateService.js 3 With
- utilityOverlay.js 3 Call
- tree.xml 4 Function
- utilityOverlay.js 4 Function
- nsUpdateService.js 7 nsJSIID
- nsUpdateService.js 15 Function
- bookmarks.js 22 Function
- text.xml 23 String
- <null> 36 BoxObject
- func_clock.html 42 Date
- bookmarks.js 57 With
- firebug-service.js 57 Object
- bookmarks.js 73 Error
- browser.js 78 Function
- popup.xml 82 Array
- bookmarks.js 114 Object
- bookmarks.js 114 XPCWrappedNative_NoHelper
- <null> 157 MouseEvent
- firebug-service.js 172 Function
- <null> 307 XPCWrappedNative_NoHelper
- <null> 388 RegExp
- <null> 488 Event
- <null> 876 XULElement
- <null> 1221 Function
-
- FILE TOTAL CLASS 2007 Sep 23 23:00:11
- <missed> -94 Date
- <missed> -34 Function
- <missed> -4 MouseEvent
- <missed> -2 Array
- <missed> -1 HTMLBodyElement
- <missed> -1 HTMLCollection
- <missed> -1 XPCNativeWrapper
- <missed> -1 XPC_WN_ModsAllowed_Proto_JSClass
- <null> 0 Array
- <null> 0 HTMLBodyElement
- <null> 0 HTMLCollection
- <null> 0 RegExp
- <null> 0 TreeColumns
- <null> 0 UIEvent
- <null> 0 XPC_WN_NoMods_Proto_JSClass
- <null> 0 XULTreeBuilder
- <null> 0 nsXPCComponents_Classes
- <null> 0 nsXPCComponents_Interfaces
- <null> 0 nsXPCComponents_Results
- browser.js 0 Array
- browser.js 0 XPCNativeWrapper
- browser.js 0 XPC_WN_NoMods_Proto_JSClass
- browser.js 0 nsJSCID
- nsUpdateService.js 0 Array
- nsUpdateService.js 0 Function
- nsUpdateService.js 0 Object
- nsUpdateService.js 0 With
- nsUpdateService.js 0 XPC_WN_NoMods_Proto_JSClass
- nsUpdateService.js 0 nsJSCID
- nsUpdateService.js 0 nsJSIID
- scrollbar.xml 0 String
- text.xml 0 String
- tree.xml 0 Array
- utilityOverlay.js 0 Call
- utilityOverlay.js 0 Function
- utilityOverlay.js 0 nsJSCID
- <null> 1 NodeList
- <null> 1 XPCNativeWrapper
- <null> 1 chrome://global/content/bindings/menu.xml#menu-iconic 84ff45a
- <null> 1 chrome://global/content/bindings/menu.xml#menu-iconic 8befbba
- <null> 1 chrome://global/content/bindings/tree.xml#treebody 84caa3a
- <null> 1 chrome://global/content/bindings/tree.xml#treebody 84e3a72
- bookmarksMenu.js 1 Function
- browser.xul 1 Function
- func_clock.html 1 Date
- popup.xml 1 Function
- scrollbox.xml 1 XULElement
- scrollbox.xml 1 nsJSIID
- <null> 2 Constructor
- <null> 2 XPC_WN_ModsAllowed_Proto_JSClass
- browser.js 2 nsJSIID
- scrollbox.xml 2 Function
- tree.xml 2 Function
- utilityOverlay.js 2 nsJSIID
- popup.xml 3 Array
- bookmarks.js 5 With
- firebug-service.js 5 Object
- <null> 6 Event
- <null> 6 MouseEvent
- bookmarks.js 9 XPCWrappedNative_NoHelper
- <null> 10 XPCWrappedNative_NoHelper
- bookmarks.js 10 Object
- browser.js 10 Function
- bookmarks.js 15 Function
- firebug-service.js 16 Function
- <null> 18 BoxObject
- bookmarks.js 75 Error
- <null> 79 Function
- <null> 315 XULElement
-^C
-
-Just after time 23:00:10, garbage collection fired cleaning up many objects.
-The final output shows a much reduced object count including a negative
-count for objects created before this script was tracing.
-
-If over the period of several minutes an object type is still steadily
-increasing, then that would be of interest. Be patient, depending on the rate
-of object creation it can take over ten minutes for garbage collect to kick in.
-
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