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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/180578">180578</a></dd>
<dt>Author</dt> <dd>akling@apple.com</dd>
<dt>Date</dt> <dd>2015-02-24 11:44:00 -0800 (Tue, 24 Feb 2015)</dd>
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<h3>Log Message</h3>
<pre>[Mac] WebKit abandons overlay scrollbar CALayers.
<https://webkit.org/b/141943>
<rdar://problem/19932199>
Reviewed by Beth Dakin.
* platform/mac/ScrollAnimatorMac.mm:
(-[WebScrollbarPartAnimation initWithScrollbar:featureToAnimate:animateFrom:animateTo:duration:]):
Use NSAnimationNonblockingThreaded to ensure that NSAnimations get cleaned up after they finish.
The animation was indirectly retaining the overlay scrollbar's CALayer, causing significant
amounts of abandoned memory to accumulate over time.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformmacScrollAnimatorMacmm">trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm</a></li>
</ul>
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<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (180577 => 180578)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2015-02-24 19:32:14 UTC (rev 180577)
+++ trunk/Source/WebCore/ChangeLog 2015-02-24 19:44:00 UTC (rev 180578)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2015-02-24 Andreas Kling <akling@apple.com>
+
+ [Mac] WebKit abandons overlay scrollbar CALayers.
+ <https://webkit.org/b/141943>
+ <rdar://problem/19932199>
+
+ Reviewed by Beth Dakin.
+
+ * platform/mac/ScrollAnimatorMac.mm:
+ (-[WebScrollbarPartAnimation initWithScrollbar:featureToAnimate:animateFrom:animateTo:duration:]):
+ Use NSAnimationNonblockingThreaded to ensure that NSAnimations get cleaned up after they finish.
+ The animation was indirectly retaining the overlay scrollbar's CALayer, causing significant
+ amounts of abandoned memory to accumulate over time.
+
</ins><span class="cx"> 2015-02-24 Anders Carlsson <andersca@apple.com>
</span><span class="cx">
</span><span class="cx"> Implement more of the data fetching API
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformmacScrollAnimatorMacmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm (180577 => 180578)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm 2015-02-24 19:32:14 UTC (rev 180577)
+++ trunk/Source/WebCore/platform/mac/ScrollAnimatorMac.mm 2015-02-24 19:44:00 UTC (rev 180578)
</span><span class="lines">@@ -315,7 +315,8 @@
</span><span class="cx"> _startValue = startValue;
</span><span class="cx"> _endValue = endValue;
</span><span class="cx">
</span><del>- [self setAnimationBlockingMode:NSAnimationNonblocking];
</del><ins>+ // FIXME: This is a workaround for <rdar://problem/19899011>.
+ [self setAnimationBlockingMode:NSAnimationNonblockingThreaded];
</ins><span class="cx">
</span><span class="cx"> return self;
</span><span class="cx"> }
</span></span></pre>
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