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RESOLVED FIXED
87642
Web Inspector: REGRESSION: load heap snapshot doesn't work
https://bugs.webkit.org/show_bug.cgi?id=87642
Summary
Web Inspector: REGRESSION: load heap snapshot doesn't work
Ilya Tikhonovsky
Reported
2012-05-28 02:32:09 PDT
Uncaught TypeError: Cannot call method 'finishLoading' of null
Attachments
Patch
(26.66 KB, patch)
2012-05-29 01:04 PDT
,
Ilya Tikhonovsky
yurys
: review+
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proposed patch, testcase, etc.
Ilya Tikhonovsky
Comment 1
2012-05-29 01:04:31 PDT
Created
attachment 144469
[details]
Patch
Yury Semikhatsky
Comment 2
2012-05-29 01:34:55 PDT
Comment on
attachment 144469
[details]
Patch View in context:
https://bugs.webkit.org/attachment.cgi?id=144469&action=review
> Source/WebCore/ChangeLog:7 > + It declares the API for HSLoader, HSLoaderProxy and HSSaveToFileReceiver.
Please don't abbreviate, use HeapSnapshotLoader etc.
> Source/WebCore/inspector/front-end/HeapSnapshotLoader.js:52 > + this._reset();
It looks as if you were going to reuse the object after dispose.
> Source/WebCore/inspector/front-end/HeapSnapshotView.js:839 > + this._loader = null;
_loader -> _receiver
> Source/WebCore/inspector/front-end/HeapSnapshotView.js:936 > + this.sidebarElement.subtitle = Number.bytesToString(this._snapshotProxy.totalSize);
This will fail if _snapshotProxy is null.
> Source/WebCore/inspector/front-end/HeapSnapshotView.js:1016 > + this._file = file;
All file loading stuff can be extracted into a separate entity.
> LayoutTests/inspector/profiler/heap-snapshot-loader.html:42 > + maxJSObjectId: 6
Can you extract this value from the snapshot mock?
Ilya Tikhonovsky
Comment 3
2012-05-29 02:17:55 PDT
Committed
r118742
: <
http://trac.webkit.org/changeset/118742
>
Ilya Tikhonovsky
Comment 4
2012-05-29 04:40:25 PDT
(In reply to
comment #2
)
> (From update of
attachment 144469
[details]
) > View in context:
https://bugs.webkit.org/attachment.cgi?id=144469&action=review
> > > Source/WebCore/ChangeLog:7 > > + It declares the API for HSLoader, HSLoaderProxy and HSSaveToFileReceiver. > > Please don't abbreviate, use HeapSnapshotLoader etc. >
done
> > Source/WebCore/inspector/front-end/HeapSnapshotLoader.js:52 > > + this._reset(); > > It looks as if you were going to reuse the object after dispose. >
technically it is possible but practically it lives in a worker and is using only once.
> > Source/WebCore/inspector/front-end/HeapSnapshotView.js:839 > > + this._loader = null; > > _loader -> _receiver
done
> > > Source/WebCore/inspector/front-end/HeapSnapshotView.js:936 > > + this.sidebarElement.subtitle = Number.bytesToString(this._snapshotProxy.totalSize); > > This will fail if _snapshotProxy is null.
We can save a snapshot only if it has been loaded. In such case _snapshotProxy property is set.
> > > Source/WebCore/inspector/front-end/HeapSnapshotView.js:1016 > > + this._file = file; > > All file loading stuff can be extracted into a separate entity.
I'll do that in a separate patch.
> > > LayoutTests/inspector/profiler/heap-snapshot-loader.html:42 > > + maxJSObjectId: 6 > > Can you extract this value from the snapshot mock?
Ádám Kallai
Comment 5
2012-05-29 07:01:38 PDT
This test fails on Lion and Qt. * inspector/profiler/heap-snapshot-loader.html I created a new bug report. *
https://bugs.webkit.org/show_bug.cgi?id=87741
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