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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/198055">198055</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2016-03-11 16:36:17 -0800 (Fri, 11 Mar 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>Move prevalent resource classifier from WebCore to WebKit.
https://bugs.webkit.org/show_bug.cgi?id=155242
&lt;rdar://problem/24913272&gt;

Patch by John Wilander &lt;wilander@apple.com&gt; on 2016-03-11
Reviewed by Andy Estes.

Source/WebCore:

No new tests since we have yet to decide how to set up tests for prevalent resources.

* loader/ResourceLoadObserver.cpp:
(WebCore::ResourceLoadObserver::logFrameNavigation):
(WebCore::ResourceLoadObserver::logSubresourceLoading):
    - Removed calls to old classifier in WebCore.
* loader/ResourceLoadStatistics.cpp:
(WebCore::encodeHashCountedSet):
(WebCore::ResourceLoadStatistics::checkAndSetAsPrevalentResourceIfNecessary): Deleted.
(WebCore::ResourceLoadStatistics::hasPrevalentResourceCharacteristics): Deleted.
* loader/ResourceLoadStatistics.h:
    - Deleted old classification functions.
* loader/ResourceLoadStatisticsStore.cpp:
(WebCore::ResourceLoadStatisticsStore::create):
(WebCore::ResourceLoadStatisticsStore::fireDataModificationHandler):
(WebCore::ResourceLoadStatisticsStore::hasEnoughDataForStatisticsProcessing):
    - New function to allow for checks before calls to processStatistics.
(WebCore::ResourceLoadStatisticsStore::processStatistics):
    - New function that receives a lamda and executes it on every entry in its statistics map.
* loader/ResourceLoadStatisticsStore.h:

Source/WebKit2:

* UIProcess/WebResourceLoadStatisticsStore.cpp:
(WebKit::WebResourceLoadStatisticsStore::create):
(WebKit::WebResourceLoadStatisticsStore::~WebResourceLoadStatisticsStore):
(WebKit::hasPrevalentResourceCharacteristics):
(WebKit::classifyPrevalentResources):
    - Moved these two functions from WebCore.
(WebKit::WebResourceLoadStatisticsStore::resourceLoadStatisticsUpdated):
    - Calls processStatistics with a lamda function to classify prevalent resources.
* WebKit2.xcodeproj/project.pbxproj:
    - Fixed the ordering of source files.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreloaderResourceLoadObservercpp">trunk/Source/WebCore/loader/ResourceLoadObserver.cpp</a></li>
<li><a href="#trunkSourceWebCoreloaderResourceLoadStatisticscpp">trunk/Source/WebCore/loader/ResourceLoadStatistics.cpp</a></li>
<li><a href="#trunkSourceWebCoreloaderResourceLoadStatisticsh">trunk/Source/WebCore/loader/ResourceLoadStatistics.h</a></li>
<li><a href="#trunkSourceWebCoreloaderResourceLoadStatisticsStorecpp">trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.cpp</a></li>
<li><a href="#trunkSourceWebCoreloaderResourceLoadStatisticsStoreh">trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.h</a></li>
<li><a href="#trunkSourceWebKit2ChangeLog">trunk/Source/WebKit2/ChangeLog</a></li>
<li><a href="#trunkSourceWebKit2UIProcessWebResourceLoadStatisticsStorecpp">trunk/Source/WebKit2/UIProcess/WebResourceLoadStatisticsStore.cpp</a></li>
<li><a href="#trunkSourceWebKit2WebKit2xcodeprojprojectpbxproj">trunk/Source/WebKit2/WebKit2.xcodeproj/project.pbxproj</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebCore/ChangeLog        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -1,3 +1,32 @@
</span><ins>+2016-03-11  John Wilander  &lt;wilander@apple.com&gt;
+
+        Move prevalent resource classifier from WebCore to WebKit.
+        https://bugs.webkit.org/show_bug.cgi?id=155242
+        &lt;rdar://problem/24913272&gt;
+
+        Reviewed by Andy Estes.
+
+        No new tests since we have yet to decide how to set up tests for prevalent resources.
+
+        * loader/ResourceLoadObserver.cpp:
+        (WebCore::ResourceLoadObserver::logFrameNavigation):
+        (WebCore::ResourceLoadObserver::logSubresourceLoading):
+            - Removed calls to old classifier in WebCore.
+        * loader/ResourceLoadStatistics.cpp:
+        (WebCore::encodeHashCountedSet):
+        (WebCore::ResourceLoadStatistics::checkAndSetAsPrevalentResourceIfNecessary): Deleted.
+        (WebCore::ResourceLoadStatistics::hasPrevalentResourceCharacteristics): Deleted.
+        * loader/ResourceLoadStatistics.h:
+            - Deleted old classification functions.
+        * loader/ResourceLoadStatisticsStore.cpp:
+        (WebCore::ResourceLoadStatisticsStore::create):
+        (WebCore::ResourceLoadStatisticsStore::fireDataModificationHandler):
+        (WebCore::ResourceLoadStatisticsStore::hasEnoughDataForStatisticsProcessing):
+            - New function to allow for checks before calls to processStatistics.
+        (WebCore::ResourceLoadStatisticsStore::processStatistics):
+            - New function that receives a lamda and executes it on every entry in its statistics map.
+        * loader/ResourceLoadStatisticsStore.h:
+
</ins><span class="cx"> 2016-03-11  Jiewen Tan  &lt;jiewen_tan@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         WebKit should not be redirected to an invalid URL
</span></span></pre></div>
<a id="trunkSourceWebCoreloaderResourceLoadObservercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/loader/ResourceLoadObserver.cpp (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/ResourceLoadObserver.cpp        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebCore/loader/ResourceLoadObserver.cpp        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -142,7 +142,6 @@
</span><span class="cx">         }
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    targetStatistics.checkAndSetAsPrevalentResourceIfNecessary(m_store-&gt;size());
</del><span class="cx">     m_store-&gt;fireDataModificationHandler();
</span><span class="cx"> }
</span><span class="cx">     
</span><span class="lines">@@ -205,7 +204,6 @@
</span><span class="cx">         targetStatistics.subresourceHasBeenSubresourceCountDividedByTotalNumberOfOriginsVisited = static_cast&lt;double&gt;(targetStatistics.subresourceHasBeenSubresourceCount) / totalVisited;
</span><span class="cx">     }
</span><span class="cx">     
</span><del>-    targetStatistics.checkAndSetAsPrevalentResourceIfNecessary(m_store-&gt;size());
</del><span class="cx">     m_store-&gt;fireDataModificationHandler();
</span><span class="cx"> }
</span><span class="cx">     
</span></span></pre></div>
<a id="trunkSourceWebCoreloaderResourceLoadStatisticscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/loader/ResourceLoadStatistics.cpp (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/ResourceLoadStatistics.cpp        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebCore/loader/ResourceLoadStatistics.cpp        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -32,37 +32,6 @@
</span><span class="cx"> 
</span><span class="cx"> namespace WebCore {
</span><span class="cx"> 
</span><del>-static const unsigned minimumOriginsVisitedForPrevalenceClassification = 100;
-
-// Sub frame thresholds
-static const unsigned subframeUnderTopFrameOriginsThresholdAbsolute = 3;
-
-// Subresource thresholds
-static const unsigned subresourceUnderTopFrameOriginsThresholdAbsolute = 5;
-static const unsigned subresourceHasBeenRedirectedFromToUniqueDomainsThresholdAbsolute = 3;
-static const unsigned redirectedToOtherPrevalentResourceOriginsThresholdAbsolute = 2;
-
-bool ResourceLoadStatistics::checkAndSetAsPrevalentResourceIfNecessary(unsigned originsVisitedSoFar)
-{
-    if (originsVisitedSoFar &lt; minimumOriginsVisitedForPrevalenceClassification || isPrevalentResource)
-        return false;
-
-    if (hasPrevalentResourceCharacteristics()) {
-        isPrevalentResource = true;
-        return true;
-    }
-
-    return false;
-}
-
-bool ResourceLoadStatistics::hasPrevalentResourceCharacteristics() const
-{
-    return subframeUnderTopFrameOrigins.size() &gt; subframeUnderTopFrameOriginsThresholdAbsolute
-        || subresourceUnderTopFrameOrigins.size() &gt; subresourceUnderTopFrameOriginsThresholdAbsolute
-        || subresourceUniqueRedirectsTo.size() &gt; subresourceHasBeenRedirectedFromToUniqueDomainsThresholdAbsolute
-        || redirectedToOtherPrevalentResourceOrigins.size() &gt; redirectedToOtherPrevalentResourceOriginsThresholdAbsolute;
-}
-
</del><span class="cx"> typedef WTF::HashMap&lt;String, unsigned, StringHash, HashTraits&lt;String&gt;, HashTraits&lt;unsigned&gt;&gt;::KeyValuePairType ResourceLoadStatisticsValue;
</span><span class="cx"> 
</span><span class="cx"> static void encodeHashCountedSet(KeyedEncoder&amp; encoder, const String&amp; label, const HashCountedSet&lt;String&gt;&amp; hashCountedSet)
</span></span></pre></div>
<a id="trunkSourceWebCoreloaderResourceLoadStatisticsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/loader/ResourceLoadStatistics.h (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/ResourceLoadStatistics.h        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebCore/loader/ResourceLoadStatistics.h        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -42,11 +42,6 @@
</span><span class="cx"> 
</span><span class="cx">     ResourceLoadStatistics() = default;
</span><span class="cx"> 
</span><del>-    bool checkAndSetAsPrevalentResourceIfNecessary(unsigned originsVisitedSoFar);
-
-    bool hasPrevalentRedirection() const;
-    bool hasPrevalentResourceCharacteristics() const;
-
</del><span class="cx">     void encode(KeyedEncoder&amp;) const;
</span><span class="cx">     bool decode(KeyedDecoder&amp;);
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebCoreloaderResourceLoadStatisticsStorecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.cpp (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.cpp        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.cpp        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -41,6 +41,8 @@
</span><span class="cx"> 
</span><span class="cx"> namespace WebCore {
</span><span class="cx"> 
</span><ins>+static const unsigned minimumOriginsLoadedForProcessing = 100;
+
</ins><span class="cx"> Ref&lt;ResourceLoadStatisticsStore&gt; ResourceLoadStatisticsStore::create()
</span><span class="cx"> {
</span><span class="cx">     return adoptRef(*new ResourceLoadStatisticsStore());
</span><span class="lines">@@ -137,4 +139,15 @@
</span><span class="cx">         m_dataAddedHandler();
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+bool ResourceLoadStatisticsStore::hasEnoughDataForStatisticsProcessing()
+{
+    return m_resourceStatisticsMap.size() &gt;= minimumOriginsLoadedForProcessing;
</ins><span class="cx"> }
</span><ins>+
+void ResourceLoadStatisticsStore::processStatistics(std::function&lt;void(ResourceLoadStatistics&amp;)&gt;&amp;&amp; processFunction)
+{
+    ASSERT(hasEnoughDataForStatisticsProcessing());
+    for (auto&amp; resourceStatistic : m_resourceStatisticsMap.values())
+        processFunction(resourceStatistic);
+}
+}
</ins></span></pre></div>
<a id="trunkSourceWebCoreloaderResourceLoadStatisticsStoreh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.h (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.h        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebCore/loader/ResourceLoadStatisticsStore.h        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -60,6 +60,8 @@
</span><span class="cx"> 
</span><span class="cx">     void fireDataModificationHandler();
</span><span class="cx"> 
</span><ins>+    WEBCORE_EXPORT bool hasEnoughDataForStatisticsProcessing();
+    WEBCORE_EXPORT void processStatistics(std::function&lt;void(ResourceLoadStatistics&amp;)&gt;&amp;&amp;);
</ins><span class="cx"> private:
</span><span class="cx">     ResourceLoadStatisticsStore() = default;
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/ChangeLog (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/ChangeLog        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebKit2/ChangeLog        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -1,3 +1,22 @@
</span><ins>+2016-03-11  John Wilander  &lt;wilander@apple.com&gt;
+
+        Move prevalent resource classifier from WebCore to WebKit.
+        https://bugs.webkit.org/show_bug.cgi?id=155242
+        &lt;rdar://problem/24913272&gt;
+
+        Reviewed by Andy Estes.
+
+        * UIProcess/WebResourceLoadStatisticsStore.cpp:
+        (WebKit::WebResourceLoadStatisticsStore::create):
+        (WebKit::WebResourceLoadStatisticsStore::~WebResourceLoadStatisticsStore):
+        (WebKit::hasPrevalentResourceCharacteristics):
+        (WebKit::classifyPrevalentResources):
+            - Moved these two functions from WebCore.
+        (WebKit::WebResourceLoadStatisticsStore::resourceLoadStatisticsUpdated):
+            - Calls processStatistics with a lamda function to classify prevalent resources.
+        * WebKit2.xcodeproj/project.pbxproj:
+            - Fixed the ordering of source files.
+
</ins><span class="cx"> 2016-03-11  Sam Weinig  &lt;sam@webkit.org&gt;
</span><span class="cx"> 
</span><span class="cx">         WebKit needs a new sandbox profile addition for DataDetectors
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessWebResourceLoadStatisticsStorecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/WebResourceLoadStatisticsStore.cpp (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebResourceLoadStatisticsStore.cpp        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebKit2/UIProcess/WebResourceLoadStatisticsStore.cpp        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -30,13 +30,21 @@
</span><span class="cx"> #include &quot;WebProcessPool.h&quot;
</span><span class="cx"> #include &quot;WebResourceLoadStatisticsStoreMessages.h&quot;
</span><span class="cx"> #include &lt;WebCore/KeyedCoding.h&gt;
</span><del>-#include &lt;WebCore/ResourceLoadStatisticsStore.h&gt;
</del><ins>+#include &lt;WebCore/ResourceLoadStatistics.h&gt;
</ins><span class="cx"> #include &lt;wtf/threads/BinarySemaphore.h&gt;
</span><span class="cx"> 
</span><span class="cx"> using namespace WebCore;
</span><span class="cx"> 
</span><span class="cx"> namespace WebKit {
</span><span class="cx"> 
</span><ins>+// Sub frame classification thresholds
+static const unsigned subframeUnderTopFrameOriginsThreshold = 3;
+    
+// Subresource classification thresholds
+static const unsigned subresourceUnderTopFrameOriginsThreshold = 5;
+static const unsigned subresourceHasBeenRedirectedFromToUniqueDomainsThreshold = 3;
+static const unsigned redirectedToOtherPrevalentResourceOriginsThreshold = 2;
+
</ins><span class="cx"> Ref&lt;WebResourceLoadStatisticsStore&gt; WebResourceLoadStatisticsStore::create(const String&amp; resourceLoadStatisticsDirectory)
</span><span class="cx"> {
</span><span class="cx">     return adoptRef(*new WebResourceLoadStatisticsStore(resourceLoadStatisticsDirectory));
</span><span class="lines">@@ -53,11 +61,37 @@
</span><span class="cx"> {
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+static inline bool hasPrevalentResourceCharacteristics(const ResourceLoadStatistics&amp; resourceStatistic)
+{
+    return resourceStatistic.subframeUnderTopFrameOrigins.size() &gt; subframeUnderTopFrameOriginsThreshold
+        || resourceStatistic.subresourceUnderTopFrameOrigins.size() &gt; subresourceUnderTopFrameOriginsThreshold
+        || resourceStatistic.subresourceUniqueRedirectsTo.size() &gt; subresourceHasBeenRedirectedFromToUniqueDomainsThreshold
+        || resourceStatistic.redirectedToOtherPrevalentResourceOrigins.size() &gt; redirectedToOtherPrevalentResourceOriginsThreshold;
+}
+    
+static inline void classifyPrevalentResources(ResourceLoadStatistics&amp; resourceStatistic, Vector&lt;String&gt;&amp; prevalentResources, Vector&lt;String&gt;&amp; prevalentResourcesWithUserInteraction)
+{
+    if (resourceStatistic.isPrevalentResource || hasPrevalentResourceCharacteristics(resourceStatistic)) {
+        resourceStatistic.isPrevalentResource = true;
+        if (resourceStatistic.hadUserInteraction)
+            prevalentResourcesWithUserInteraction.append(resourceStatistic.highLevelDomain);
+        else
+            prevalentResources.append(resourceStatistic.highLevelDomain);
+    }
+}
+
</ins><span class="cx"> void WebResourceLoadStatisticsStore::resourceLoadStatisticsUpdated(const Vector&lt;WebCore::ResourceLoadStatistics&gt;&amp; origins)
</span><span class="cx"> {
</span><span class="cx">     coreStore().mergeStatistics(origins);
</span><del>-    // TODO: Analyze statistics to recognize prevalent domains. &lt;rdar://problem/24913272&gt;
-    // TODO: Notify individual WebProcesses of prevalent domains. &lt;rdar://problem/24703099&gt;
</del><ins>+
+    Vector&lt;String&gt; prevalentResources, prevalentResourcesWithUserInteraction;
+    if (coreStore().hasEnoughDataForStatisticsProcessing()) {
+        coreStore().processStatistics([this, &amp;prevalentResources, &amp;prevalentResourcesWithUserInteraction] (ResourceLoadStatistics&amp; resourceStatistic) {
+            classifyPrevalentResources(resourceStatistic, prevalentResources, prevalentResourcesWithUserInteraction);
+        });
+    }
+
+    // FIXME: Notify individual WebProcesses of prevalent domains using the two vectors populated by the classifier. &lt;rdar://problem/24703099&gt;
</ins><span class="cx">     auto encoder = coreStore().createEncoderFromData();
</span><span class="cx">     
</span><span class="cx">     writeEncoderToDisk(*encoder.get(), &quot;full_browsing_session&quot;);
</span></span></pre></div>
<a id="trunkSourceWebKit2WebKit2xcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/WebKit2.xcodeproj/project.pbxproj (198054 => 198055)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/WebKit2.xcodeproj/project.pbxproj        2016-03-11 23:59:04 UTC (rev 198054)
+++ trunk/Source/WebKit2/WebKit2.xcodeproj/project.pbxproj        2016-03-12 00:36:17 UTC (rev 198055)
</span><span class="lines">@@ -5824,9 +5824,6 @@
</span><span class="cx">                                 86E67A22190F411800004AB7 /* ProcessThrottler.cpp */,
</span><span class="cx">                                 86E67A21190F411800004AB7 /* ProcessThrottler.h */,
</span><span class="cx">                                 83048AE51ACA45DC0082C832 /* ProcessThrottlerClient.h */,
</span><del>-                                7A9CD8C01C77984900D9F6C7 /* WebResourceLoadStatisticsStore.cpp */,
-                                7A9CD8C11C77984900D9F6C7 /* WebResourceLoadStatisticsStore.h */,
-                                7A9CD8C21C779AD600D9F6C7 /* WebResourceLoadStatisticsStore.messages.in */,
</del><span class="cx">                                 BC111B08112F5E3C00337BAB /* ResponsivenessTimer.cpp */,
</span><span class="cx">                                 1A30066C1110F4F70031937C /* ResponsivenessTimer.h */,
</span><span class="cx">                                 51A4D5A816CAC4FF000E615E /* StatisticsRequest.cpp */,
</span><span class="lines">@@ -5923,6 +5920,9 @@
</span><span class="cx">                                 BC111B0D112F5E4F00337BAB /* WebProcessProxy.cpp */,
</span><span class="cx">                                 BC032DCF10F4389F0058C15A /* WebProcessProxy.h */,
</span><span class="cx">                                 BCEE7AB312817095009827DA /* WebProcessProxy.messages.in */,
</span><ins>+                                7A9CD8C01C77984900D9F6C7 /* WebResourceLoadStatisticsStore.cpp */,
+                                7A9CD8C11C77984900D9F6C7 /* WebResourceLoadStatisticsStore.h */,
+                                7A9CD8C21C779AD600D9F6C7 /* WebResourceLoadStatisticsStore.messages.in */,
</ins><span class="cx">                         );
</span><span class="cx">                         path = UIProcess;
</span><span class="cx">                         sourceTree = &quot;&lt;group&gt;&quot;;
</span></span></pre>
</div>
</div>

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