RESOLVED FIXED147898
Add a tool that dumps class and struct member layout, showing padding 
https://bugs.webkit.org/show_bug.cgi?id=147898
Summary Add a tool that dumps class and struct member layout, showing padding
Simon Fraser (smfr)
Reported 2015-08-11 13:58:19 PDT
Add a tool that dumps class and struct member layout, showing padding
Attachments
Patch (10.01 KB, patch)
2015-08-11 14:01 PDT, Simon Fraser (smfr) 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2015-08-11 14:01:50 PDT
Created attachment 258753 [details] Patch
Simon Fraser (smfr)
Comment 2 2015-08-11 14:03:06 PDT
Here's what it says for RenderElement: 97$ $ ./Tools/Scripts/dump-class-layout WebCore RenderElement Found 1 types matching "RenderElement" in "/Volumes/Data/Development/OSX/webkit/OpenSource/WebKitBuild/Release/WebCore.framework/WebCore" +0 { 72} RenderElement +0 { 48} WebCore::RenderObject +0 { 8} WebCore::CachedImageClient +0 { 8} WebCore::CachedResourceClient +0 < 8> __vtbl_ptr_type * _vptr; +8 < 8> WebCore::Node & m_node; +16 < 8> WebCore::RenderElement * m_parent; +24 < 8> WebCore::RenderObject * m_previous; +32 < 8> WebCore::RenderObject * m_next; +40 < 4> WebCore::RenderObject::RenderObjectBitfields m_bitfields; +40 < 4> unsigned int:1 m_hasRareData; +40 < 4> unsigned int:1 m_beingDestroyed; +40 < 4> unsigned int:1 m_needsLayout; +40 < 4> unsigned int:1 m_needsPositionedMovementLayout; +40 < 4> unsigned int:1 m_normalChildNeedsLayout; +40 < 4> unsigned int:1 m_posChildNeedsLayout; +40 < 4> unsigned int:1 m_needsSimplifiedNormalFlowLayout; +40 < 4> unsigned int:1 m_preferredLogicalWidthsDirty; +41 < 4> unsigned int:1 m_floating; +41 < 4> unsigned int:1 m_isAnonymous; +41 < 4> unsigned int:1 m_isTextOrRenderView; +41 < 4> unsigned int:1 m_isBox; +41 < 4> unsigned int:1 m_isInline; +41 < 4> unsigned int:1 m_isReplaced; +41 < 4> unsigned int:1 m_isLineBreak; +41 < 4> unsigned int:1 m_horizontalWritingMode; +42 < 4> unsigned int:1 m_hasLayer; +42 < 4> unsigned int:1 m_hasOverflowClip; +42 < 4> unsigned int:1 m_hasTransformRelatedProperty; +42 < 4> unsigned int:1 m_unused; +42 < 4> unsigned int:1 m_everHadLayout; +42 < 4> unsigned int:1 m_childrenInline; +42 < 4> unsigned int:2 m_positionedState; +43 < 4> unsigned int:3 m_selectionState; +43 < 4> unsigned int:2 m_flowThreadState; +43 < 4> unsigned int:2 m_boxDecorationState; +47 < 1> <PADDING> +44 < 4> unsigned int:6 m_baseTypeFlags; +44 < 4> unsigned int:1 m_ancestorLineBoxDirty; +44 < 4> unsigned int:1 m_hasInitializedStyle; +45 < 4> unsigned int:1 m_renderInlineAlwaysCreatesLineBoxes; +45 < 4> unsigned int:1 m_renderBoxNeedsLazyRepaint; +45 < 4> unsigned int:1 m_hasPausedImageAnimations; +45 < 4> unsigned int:1 m_hasCounterNodeMap; +45 < 4> unsigned int:1 m_isCSSAnimating; +45 < 4> unsigned int:1 m_hasContinuation; +45 < 4> unsigned int:1 m_renderBlockHasMarginBeforeQuirk; +45 < 4> unsigned int:1 m_renderBlockHasMarginAfterQuirk; +46 < 4> unsigned int:1 m_renderBlockHasBorderOrPaddingLogicalWidthChanged; +46 < 4> unsigned int:1 m_renderBlockFlowHasMarkupTruncation; +46 < 4> unsigned int:2 m_renderBlockFlowLineLayoutPath; +48 < 8> WebCore::RenderObject * m_firstChild; +56 < 8> WebCore::RenderObject * m_lastChild; +64 < 8> WTF::Ref<WebCore::RenderStyle> m_style; +64 < 8> WebCore::RenderStyle * m_ptr; Total byte size: 72 Total pad bytes: 1 Padding percentage: 1.39 %
alan
Comment 3 2015-08-11 14:05:37 PDT
Comment on attachment 258753 [details] Patch rs=me! very nice! Any documentation on how to use it?
alan
Comment 4 2015-08-11 14:06:46 PDT
(In reply to comment #3) > Comment on attachment 258753 [details] > Patch > > rs=me! > very nice! > > Any documentation on how to use it? Never mind!
WebKit Commit Bot
Comment 5 2015-08-12 12:32:00 PDT
Comment on attachment 258753 [details] Patch Clearing flags on attachment: 258753 Committed r188350: <http://trac.webkit.org/changeset/188350>
WebKit Commit Bot
Comment 6 2015-08-12 12:32:05 PDT
All reviewed patches have been landed. Closing bug.
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