Don't force creation of process pool when enabling resource load stat…

…istics

https://bugs.webkit.org/show_bug.cgi?id=180374
<rdar://problem/35545639>

Reviewed by Alex Christensen.

Pass appropriate arguments to the 'processPool' accessor so that we only get the
set of existing process pools. We don't want to pay the cost of launching new
process pools just to set this flag. The flag will be properly set when the pools
are created as soon as a WebView is instantiated.

* UIProcess/WebsiteData/WebsiteDataStore.cpp:
(WebKit::WebsiteDataStore::setResourceLoadStatisticsEnabled):


Canonical link: https://commits.webkit.org/196349@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@225508 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebKit/ChangeLog

@@ -1,3 +1,19 @@
+2017-12-04  Brent Fulgham  <bfulgham@apple.com>
+
+        Don't force creation of process pool when enabling resource load statistics
+        https://bugs.webkit.org/show_bug.cgi?id=180374
+        <rdar://problem/35545639>
+
+        Reviewed by Alex Christensen.
+
+        Pass appropriate arguments to the 'processPool' accessor so that we only get the
+        set of existing process pools. We don't want to pay the cost of launching new
+        process pools just to set this flag. The flag will be properly set when the pools
+        are created as soon as a WebView is instantiated.
+
+        * UIProcess/WebsiteData/WebsiteDataStore.cpp:
+        (WebKit::WebsiteDataStore::setResourceLoadStatisticsEnabled):
+
 2017-12-04  David Quesada  <david_quesada@apple.com>
 
         Add a class for parsing application manifests

Source/WebKit/UIProcess/WebsiteData/WebsiteDataStore.cpp

@@ -1326,7 +1326,9 @@ void WebsiteDataStore::setResourceLoadStatisticsEnabled(bool enabled)
     }
 
     m_resourceLoadStatistics = nullptr;
-    for (auto& processPool : processPools())
+
+    auto existingProcessPools = processPools(std::numeric_limits<size_t>::max(), false);
+    for (auto& processPool : existingProcessPools)
         processPool->setResourceLoadStatisticsEnabled(false);
 }