RESOLVED FIXED 126025
Storing new CopiedSpace memory into a JSObject should fire a write barrier 
https://bugs.webkit.org/show_bug.cgi?id=126025
Summary Storing new CopiedSpace memory into a JSObject should fire a write barrier
Mark Hahnenberg
Reported 2013-12-19 15:58:15 PST
Technically this is creating a pointer between a (potentially) old generation object and a young generation chunk of memory, thus there needs to be a barrier.
Attachments
Patch (16.08 KB, patch)
2013-12-20 19:01 PST, Mark Hahnenberg 		no flags
DetailsFormatted DiffDiff
Patch (31.30 KB, patch)
2014-01-02 13:19 PST, Mark Hahnenberg 		no flags
DetailsFormatted DiffDiff
Patch (30.71 KB, patch)
2014-01-02 13:31 PST, Mark Hahnenberg 		no flags
DetailsFormatted DiffDiff
Patch (30.75 KB, patch)
2014-01-02 13:45 PST, Mark Hahnenberg 		no flags
DetailsFormatted DiffDiff
Show Obsolete (3) View All Add attachment proposed patch, testcase, etc.
Mark Hahnenberg
Comment 1 2013-12-20 19:01:25 PST
Created attachment 219830 [details] Patch
Build Bot
Comment 2 2013-12-20 20:37:13 PST
Comment on attachment 219830 [details] Patch Attachment 219830 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.appspot.com/results/49728087
Build Bot
Comment 3 2013-12-20 20:47:17 PST
Comment on attachment 219830 [details] Patch Attachment 219830 [details] did not pass mac-ews (mac): Output: http://webkit-queues.appspot.com/results/45518107
Mark Hahnenberg
Comment 4 2014-01-02 13:19:27 PST
Created attachment 220245 [details] Patch
WebKit Commit Bot
Comment 5 2014-01-02 13:21:01 PST
Attachment 220245 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source/JavaScriptCore/GNUmakefile.list.am', u'Source/JavaScriptCore/JavaScriptCore.vcxproj/JavaScriptCore.vcxproj', u'Source/JavaScriptCore/JavaScriptCore.vcxproj/JavaScriptCore.vcxproj.filters', u'Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj', u'Source/JavaScriptCore/dfg/DFGOperations.cpp', u'Source/JavaScriptCore/heap/CopyWriteBarrier.h', u'Source/JavaScriptCore/heap/Heap.h', u'Source/JavaScriptCore/runtime/JSArray.cpp', u'Source/JavaScriptCore/runtime/JSCell.h', u'Source/JavaScriptCore/runtime/JSGenericTypedArrayViewInlines.h', u'Source/JavaScriptCore/runtime/JSObject.cpp', u'Source/JavaScriptCore/runtime/JSObject.h', u'Source/JavaScriptCore/runtime/MapData.cpp', u'Source/JavaScriptCore/runtime/Structure.cpp', '--commit-queue']" exit_code: 1 ERROR: Source/JavaScriptCore/runtime/JSObject.cpp:2388: Declaration has space between type name and * in newVectorLength * sizeof [whitespace/declaration] [3] Total errors found: 1 in 15 files If any of these errors are false positives, please file a bug against check-webkit-style.
EFL EWS Bot
Comment 6 2014-01-02 13:23:59 PST
Comment on attachment 220245 [details] Patch Attachment 220245 [details] did not pass efl-ews (efl): Output: http://webkit-queues.appspot.com/results/5114447056076800
Mark Hahnenberg
Comment 7 2014-01-02 13:31:37 PST
Created attachment 220247 [details] Patch
WebKit Commit Bot
Comment 8 2014-01-02 13:32:41 PST
Attachment 220247 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source/JavaScriptCore/GNUmakefile.list.am', u'Source/JavaScriptCore/JavaScriptCore.vcxproj/JavaScriptCore.vcxproj', u'Source/JavaScriptCore/JavaScriptCore.vcxproj/JavaScriptCore.vcxproj.filters', u'Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj', u'Source/JavaScriptCore/dfg/DFGOperations.cpp', u'Source/JavaScriptCore/heap/CopyWriteBarrier.h', u'Source/JavaScriptCore/runtime/JSArray.cpp', u'Source/JavaScriptCore/runtime/JSCell.h', u'Source/JavaScriptCore/runtime/JSGenericTypedArrayViewInlines.h', u'Source/JavaScriptCore/runtime/JSObject.cpp', u'Source/JavaScriptCore/runtime/JSObject.h', u'Source/JavaScriptCore/runtime/MapData.cpp', u'Source/JavaScriptCore/runtime/Structure.cpp', '--commit-queue']" exit_code: 1 ERROR: Source/JavaScriptCore/runtime/JSObject.cpp:2388: Declaration has space between type name and * in newVectorLength * sizeof [whitespace/declaration] [3] Total errors found: 1 in 14 files If any of these errors are false positives, please file a bug against check-webkit-style.
Mark Hahnenberg
Comment 9 2014-01-02 13:45:55 PST
Created attachment 220248 [details] Patch
WebKit Commit Bot
Comment 10 2014-01-02 13:47:29 PST
Attachment 220248 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source/JavaScriptCore/GNUmakefile.list.am', u'Source/JavaScriptCore/JavaScriptCore.vcxproj/JavaScriptCore.vcxproj', u'Source/JavaScriptCore/JavaScriptCore.vcxproj/JavaScriptCore.vcxproj.filters', u'Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj', u'Source/JavaScriptCore/dfg/DFGOperations.cpp', u'Source/JavaScriptCore/heap/CopyWriteBarrier.h', u'Source/JavaScriptCore/runtime/JSArray.cpp', u'Source/JavaScriptCore/runtime/JSCell.h', u'Source/JavaScriptCore/runtime/JSGenericTypedArrayViewInlines.h', u'Source/JavaScriptCore/runtime/JSObject.cpp', u'Source/JavaScriptCore/runtime/JSObject.h', u'Source/JavaScriptCore/runtime/MapData.cpp', u'Source/JavaScriptCore/runtime/Structure.cpp', '--commit-queue']" exit_code: 1 ERROR: Source/JavaScriptCore/runtime/JSObject.cpp:2388: Declaration has space between type name and * in newVectorLength * sizeof [whitespace/declaration] [3] Total errors found: 1 in 14 files If any of these errors are false positives, please file a bug against check-webkit-style.
Filip Pizlo
Comment 11 2014-01-02 14:18:54 PST
Comment on attachment 220248 [details] Patch r=me.
WebKit Commit Bot
Comment 12 2014-01-02 14:53:29 PST
Comment on attachment 220248 [details] Patch Clearing flags on attachment: 220248 Committed r161230: <http://trac.webkit.org/changeset/161230>
WebKit Commit Bot
Comment 13 2014-01-02 14:53:31 PST
All reviewed patches have been landed. Closing bug.
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