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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - The DOM should have an advancing wavefront opaque root barrier"
href="https://bugs.webkit.org/show_bug.cgi?id=165712">165712</a>
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<th>Summary</th>
<td>The DOM should have an advancing wavefront opaque root barrier
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>WebCore JavaScript
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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</tr>
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<th>Reporter</th>
<td>fpizlo@apple.com
</td>
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<p>
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<pre>I thought that I wouldn't need a barrier because of how the weak fixpoint works, but we still do need a barrier when root relationships change.
Fortunately, this isn't so difficult.
We could do a retreating wavefront barrier eventually, which would improve performance in programs that churn a lot of DOM things during an eden collection. But I think that's a rare enough case - since eden collections are short - that I'm OK with not caring initially.
Thanks @rniwa for coming up with the algorithm on IRC.</pre>
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