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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/201563">201563</a></dd>
<dt>Author</dt> <dd>bshafiei@apple.com</dd>
<dt>Date</dt> <dd>2016-06-01 12:47:19 -0700 (Wed, 01 Jun 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merged <a href="http://trac.webkit.org/projects/webkit/changeset/201561">r201561</a>. rdar://problem/26475175</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari601146branchSourceWebCoreChangeLog">branches/safari-601.1.46-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari601146branchSourceWebCorebindingsjsJSDocumentCustomcpp">branches/safari-601.1.46-branch/Source/WebCore/bindings/js/JSDocumentCustom.cpp</a></li>
<li><a href="#branchessafari601146branchSourceWebCoredomNodeh">branches/safari-601.1.46-branch/Source/WebCore/dom/Node.h</a></li>
<li><a href="#branchessafari601146branchSourceWebCoreplatformgraphicsImageh">branches/safari-601.1.46-branch/Source/WebCore/platform/graphics/Image.h</a></li>
<li><a href="#branchessafari601146branchSourceWebCoresvgSVGGraphicsElementh">branches/safari-601.1.46-branch/Source/WebCore/svg/SVGGraphicsElement.h</a></li>
<li><a href="#branchessafari601146branchSourceWebCoresvgSVGPathElementcpp">branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.cpp</a></li>
<li><a href="#branchessafari601146branchSourceWebCoresvgSVGPathElementh">branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.h</a></li>
<li><a href="#branchessafari601146branchSourceWebCoresvgSVGPolyElementcpp">branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.cpp</a></li>
<li><a href="#branchessafari601146branchSourceWebCoresvgSVGPolyElementh">branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.h</a></li>
<li><a href="#branchessafari601146branchSourceWebCoresvggraphicsSVGImagecpp">branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.cpp</a></li>
<li><a href="#branchessafari601146branchSourceWebCoresvggraphicsSVGImageh">branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari601146branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/ChangeLog (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/ChangeLog 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/ChangeLog 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -1,3 +1,57 @@
</span><ins>+2016-06-01 Babak Shafiei <bshafiei@apple.com>
+
+ Merge r201561.
+
+ 2016-06-01 Said Abou-Hallawa <sabouhallawa@apple.com>
+
+ SVGImage should report its memory cost to JS garbage collector
+ https://bugs.webkit.org/show_bug.cgi?id=158139
+
+ Reviewed by Geoffrey Garen.
+
+ Like what we do in HTMLImageLoader::notifyFinished() by reporting the memory
+ cost of the BitmapImage, we need to do something similar for the SVGImage. In
+ SVGImage::dataChange() and when allDataReceived is true, we can calculate
+ the size of all DOM nodes and their renderers. The size of the encoded data
+ has to be added as well to the total memory cost. An approximation for the
+ memory cost has to be used since it is costly to get an accurate number.
+
+ * bindings/js/JSDocumentCustom.cpp:
+ (WebCore::reportMemoryForDocumentIfFrameless): Use Node::approximateMemoryCost()
+ instead of sizeof(Node). A Node's descendant can override this function and
+ return a more accurate memory cost.
+
+ * dom/Node.h:
+ (WebCore::Node::approximateMemoryCost): Define this new virtual function in the
+ Node class. Its default value is sizeof(Node) but any descendant can return a
+ more accurate number.
+
+ * platform/graphics/Image.h:
+ (WebCore::Image::data): Define a const version of data() so it can be called
+ the const function SVGImage::reportApproximateMemoryCost().
+
+ * svg/SVGGraphicsElement.h: Override approximateMemoryCost() to return
+ sizeof(SVGGraphicsElement).
+
+ * svg/SVGPathElement.cpp:
+ (WebCore::SVGPathElement::approximateMemoryCost): Override this function to return
+ the memory cost of the points and the m_path of the renderer.
+ * svg/SVGPathElement.h:
+
+ * svg/SVGPolyElement.cpp:
+ (WebCore::SVGPolyElement::approximateMemoryCost): Override this function to return
+ the memory cost of the points and the m_path of the renderer.
+ * svg/SVGPolyElement.h:
+
+ * svg/graphics/SVGImage.cpp:
+ (WebCore::SVGImage::reportApproximateMemoryCost): Calculate the memory cost of the
+ nodes in the SVGDocument of an SVGImage. Then report this number to the JS garbage
+ collector.
+
+ (WebCore::SVGImage::dataChanged): After loading all the SVG encoded data and building
+ its DOM tree and the render tree, report the total memory cost to the JS garbage collector.
+ * svg/graphics/SVGImage.h:
+
</ins><span class="cx"> 2016-05-16 Babak Shafiei <bshafiei@apple.com>
</span><span class="cx">
</span><span class="cx"> Merge r200986.
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCorebindingsjsJSDocumentCustomcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/bindings/js/JSDocumentCustom.cpp (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/bindings/js/JSDocumentCustom.cpp 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/bindings/js/JSDocumentCustom.cpp 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -105,13 +105,13 @@
</span><span class="cx"> // Make sure the document is kept around by the window object, and works right with the
</span><span class="cx"> // back/forward cache.
</span><span class="cx"> if (!document->frame()) {
</span><del>- size_t nodeCount = 0;
</del><ins>+ size_t memoryCost = 0;
</ins><span class="cx"> for (Node* n = document; n; n = NodeTraversal::next(*n))
</span><del>- nodeCount++;
</del><ins>+ memoryCost += n->approximateMemoryCost();
</ins><span class="cx">
</span><span class="cx"> // FIXME: Adopt reportExtraMemoryVisited, and switch to reportExtraMemoryAllocated.
</span><span class="cx"> // https://bugs.webkit.org/show_bug.cgi?id=142595
</span><del>- exec->heap()->deprecatedReportExtraMemory(nodeCount * sizeof(Node));
</del><ins>+ exec->heap()->deprecatedReportExtraMemory(memoryCost);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> return wrapper;
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoredomNodeh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/dom/Node.h (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/dom/Node.h 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/dom/Node.h 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -164,6 +164,7 @@
</span><span class="cx"> virtual String nodeValue() const;
</span><span class="cx"> virtual void setNodeValue(const String&, ExceptionCode&);
</span><span class="cx"> virtual NodeType nodeType() const = 0;
</span><ins>+ virtual size_t approximateMemoryCost() const { return sizeof(*this); }
</ins><span class="cx"> ContainerNode* parentNode() const;
</span><span class="cx"> static ptrdiff_t parentNodeMemoryOffset() { return OBJECT_OFFSETOF(Node, m_parentNode); }
</span><span class="cx"> Element* parentElement() const;
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoreplatformgraphicsImageh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/platform/graphics/Image.h (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/platform/graphics/Image.h 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/platform/graphics/Image.h 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -119,6 +119,7 @@
</span><span class="cx"> virtual bool decodedDataIsPurgeable() const { return false; }
</span><span class="cx">
</span><span class="cx"> SharedBuffer* data() { return m_encodedImageData.get(); }
</span><ins>+ const SharedBuffer* data() const { return m_encodedImageData.get(); }
</ins><span class="cx">
</span><span class="cx"> // Animation begins whenever someone draws the image, so startAnimation() is not normally called.
</span><span class="cx"> // It will automatically pause once all observers no longer want to render the image anywhere.
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoresvgSVGGraphicsElementh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/svg/SVGGraphicsElement.h (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/svg/SVGGraphicsElement.h 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/svg/SVGGraphicsElement.h 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -53,6 +53,8 @@
</span><span class="cx"> virtual void toClipPath(Path&);
</span><span class="cx"> virtual RenderPtr<RenderElement> createElementRenderer(Ref<RenderStyle>&&, const RenderTreePosition&) override;
</span><span class="cx">
</span><ins>+ size_t approximateMemoryCost() const override { return sizeof(*this); }
+
</ins><span class="cx"> protected:
</span><span class="cx"> SVGGraphicsElement(const QualifiedName&, Document&);
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoresvgSVGPathElementcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.cpp (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.cpp 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.cpp 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -359,6 +359,14 @@
</span><span class="cx"> return nullptr;
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+size_t SVGPathElement::approximateMemoryCost() const
+{
+ // This is an approximation for path memory cost since the path is parsed on demand.
+ size_t pathMemoryCost = (m_pathByteStream->size() / 10) * sizeof(FloatPoint);
+ // We need to account for the memory which is allocated by the RenderSVGPath::m_path.
+ return sizeof(*this) + (renderer() ? pathMemoryCost * 2 + sizeof(RenderSVGPath) : pathMemoryCost);
+}
+
</ins><span class="cx"> void SVGPathElement::pathSegListChanged(SVGPathSegRole role, ListModification listModification)
</span><span class="cx"> {
</span><span class="cx"> switch (role) {
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoresvgSVGPathElementh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.h (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.h 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPathElement.h 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -99,6 +99,8 @@
</span><span class="cx">
</span><span class="cx"> void animatedPropertyWillBeDeleted();
</span><span class="cx">
</span><ins>+ size_t approximateMemoryCost() const override;
+
</ins><span class="cx"> private:
</span><span class="cx"> SVGPathElement(const QualifiedName&, Document&);
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoresvgSVGPolyElementcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.cpp (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.cpp 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.cpp 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -130,4 +130,11 @@
</span><span class="cx"> return static_cast<SVGListPropertyTearOff<SVGPointList>*>(static_reference_cast<SVGAnimatedPointList>(lookupOrCreatePointsWrapper(this))->animVal().get());
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+size_t SVGPolyElement::approximateMemoryCost() const
+{
+ size_t pointsCost = pointList().size() * sizeof(FloatPoint);
+ // We need to account for the memory which is allocated by the RenderSVGPath::m_path.
+ return sizeof(*this) + (renderer() ? pointsCost * 2 + sizeof(RenderSVGPath) : pointsCost);
</ins><span class="cx"> }
</span><ins>+
+}
</ins></span></pre></div>
<a id="branchessafari601146branchSourceWebCoresvgSVGPolyElementh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.h (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.h 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/svg/SVGPolyElement.h 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -38,6 +38,8 @@
</span><span class="cx">
</span><span class="cx"> static const SVGPropertyInfo* pointsPropertyInfo();
</span><span class="cx">
</span><ins>+ size_t approximateMemoryCost() const override;
+
</ins><span class="cx"> protected:
</span><span class="cx"> SVGPolyElement(const QualifiedName&, Document&);
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoresvggraphicsSVGImagecpp"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.cpp (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.cpp 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.cpp 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -29,6 +29,7 @@
</span><span class="cx"> #include "SVGImage.h"
</span><span class="cx">
</span><span class="cx"> #include "Chrome.h"
</span><ins>+#include "DOMWindow.h"
</ins><span class="cx"> #include "DocumentLoader.h"
</span><span class="cx"> #include "ElementIterator.h"
</span><span class="cx"> #include "FrameLoader.h"
</span><span class="lines">@@ -36,6 +37,7 @@
</span><span class="cx"> #include "ImageBuffer.h"
</span><span class="cx"> #include "ImageObserver.h"
</span><span class="cx"> #include "IntRect.h"
</span><ins>+#include "JSDOMWindowBase.h"
</ins><span class="cx"> #include "MainFrame.h"
</span><span class="cx"> #include "PageConfiguration.h"
</span><span class="cx"> #include "RenderSVGRoot.h"
</span><span class="lines">@@ -47,6 +49,8 @@
</span><span class="cx"> #include "SVGImageElement.h"
</span><span class="cx"> #include "SVGSVGElement.h"
</span><span class="cx"> #include "Settings.h"
</span><ins>+#include <runtime/JSCInlines.h>
+#include <runtime/JSLock.h>
</ins><span class="cx">
</span><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><span class="lines">@@ -351,6 +355,21 @@
</span><span class="cx"> stopAnimation();
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+void SVGImage::reportApproximateMemoryCost() const
+{
+ Document* document = m_page->mainFrame().document();
+ size_t decodedImageMemoryCost = 0;
+
+ for (Node* node = document; node; node = NodeTraversal::next(*node))
+ decodedImageMemoryCost += node->approximateMemoryCost();
+
+ JSC::VM& vm = JSDOMWindowBase::commonVM();
+ JSC::JSLockHolder lock(vm);
+ // FIXME: Adopt reportExtraMemoryVisited, and switch to reportExtraMemoryAllocated.
+ // https://bugs.webkit.org/show_bug.cgi?id=142595
+ vm.heap.deprecatedReportExtraMemory(decodedImageMemoryCost + data()->size());
+}
+
</ins><span class="cx"> bool SVGImage::dataChanged(bool allDataReceived)
</span><span class="cx"> {
</span><span class="cx"> // Don't do anything if is an empty image.
</span><span class="lines">@@ -393,6 +412,7 @@
</span><span class="cx">
</span><span class="cx"> // Set the intrinsic size before a container size is available.
</span><span class="cx"> m_intrinsicSize = containerSize();
</span><ins>+ reportApproximateMemoryCost();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> return m_page != nullptr;
</span></span></pre></div>
<a id="branchessafari601146branchSourceWebCoresvggraphicsSVGImageh"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.h (201562 => 201563)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.h 2016-06-01 19:32:34 UTC (rev 201562)
+++ branches/safari-601.1.46-branch/Source/WebCore/svg/graphics/SVGImage.h 2016-06-01 19:47:19 UTC (rev 201563)
</span><span class="lines">@@ -87,6 +87,8 @@
</span><span class="cx">
</span><span class="cx"> virtual bool dataChanged(bool allDataReceived) override;
</span><span class="cx">
</span><ins>+ void reportApproximateMemoryCost() const;
+
</ins><span class="cx"> // FIXME: SVGImages will be unable to prune because this function is not implemented yet.
</span><span class="cx"> virtual void destroyDecodedData(bool) override { }
</span><span class="cx">
</span></span></pre>
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