Opened 9 years ago
Closed 9 years ago
#11587 closed defect (fixed)
Subscription in Dialog._setup causes memory leak
| Reported by: | Roberto Mosqueda | Owned by: | bill |
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| Priority: | high | Milestone: | 1.5.1 |
| Component: | Dijit | Version: | 1.5 |
| Keywords: | memory leak | Cc: | David Schwartz, [email protected]…, [email protected]…, Katie Vance |
| Blocked By: | Blocking: |
Description
Testing Type: Memory leaks
Widget: dijit.Dialog
Description: on IE 8 every time a new Dialog is created, memory is reserved but when the dialog is closed the memory is not released
Steps to reproduce:
1.- Open IE 8 on the /dijit/tests/test_Dialog.html sample page
2.- Open the process explorer tool to monitor the memory used by IE 8
3.- Create/show a new dialog using the buttons on the page (Show dialog, show 2 dialogs, etc)
4.- Delete/close the dialog created, using the "close" button in the dialog.
5.- Repeat the last 2 instructions several times.
Actual results: As you can see on the process explorer tool(image1 attached), every time that a new dialog is shown, new memory is reserved, but when the dialog is closed, the memory is not released, it causes a constantly increase in memory usage by the test page.
Expected results: If new memory is reserved when a dialog is shown, the memory should be released when the dialog is closed.
Note: it is necessary to back-port this issue when fixed to previous versions of IBM dojo Toolkit (at least 1.4.3)
Attachments (2)
Change History (10)
Changed 9 years ago by
| Attachment: | image1.jpg added |
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comment:1 Changed 9 years ago by
| Cc: | Nathan Toone removed |
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| Summary: | on IE 8 every time a new Dialog is created, memory is reserved but when the dialog is closed the memory is not release → Dilaog: initially opening a Dialog increases memory usage, and closing it doesn't release memory (IE8) |
comment:2 Changed 9 years ago by
| Summary: | Dilaog: initially opening a Dialog increases memory usage, and closing it doesn't release memory (IE8) → Dialog: initially opening a Dialog increases memory usage, and closing it doesn't release memory (IE8) |
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And also, note that closing a Dialog is not the same thing as deleting (aka destroying) it. The dialog still exists, ready to be reopened at a later time.
comment:3 Changed 9 years ago by
| Cc: | Katie Vance added |
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| Owner: | set to bill |
| Summary: | Dialog: initially opening a Dialog increases memory usage, and closing it doesn't release memory (IE8) → Subscription in Dialog._setup causes memory leak |
There is an initial increase in memory the very first time a dialog is shown and that is because of some initialization that needs to be done. However, continuing to show/hide the dialogs does not increase memory usage. The initialization taking up memory is not proof of a memory leak.
Instead to prove a leak you must create and destroy dialogs repeatedly. After creating, showing, hiding and destroying 1000+ dialogs it's obvious there is a leak. (I used chrome) There is a subscription that is not cleaned up in the _setup method. Cleaning the subscription fixes the issue.
Changed 9 years ago by
| Attachment: | Dialog_leak.patch added |
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Patch to cleanup subscription on destroy
comment:5 Changed 9 years ago by
| Resolution: | → fixed |
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| Status: | new → closed |
comment:7 Changed 9 years ago by
| Milestone: | 1.6 → 1.5.1 |
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| Resolution: | fixed |
| Status: | closed → reopened |
OK sure.
comment:8 Changed 9 years ago by
| Resolution: | → fixed |
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| Status: | reopened → closed |
Your description confused creating a Dialog with opening it for the first time. Not sure if there's a bug here, since opening the Dialog for the first time does some initialization work.