Attachment 349066 Details for Bug 189364 – patch

[patch] patch

prewarm-process-7.patch (text/plain), 20.84 KB, created by Antti Koivisto on 2018-09-06 13:47:16 PDT

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Creator: Antti Koivisto

Created: 2018-09-06 13:47:16 PDT

Size: 20.84 KB

patch

obsolete

>Index: Source/WebCore/ChangeLog
>===================================================================
>--- Source/WebCore/ChangeLog	(revision 235669)
>+++ Source/WebCore/ChangeLog	(working copy)
>@@ -1,3 +1,35 @@
>+2018-09-06  Antti Koivisto  <antti@apple.com>
>+
>+        Actively prewarm processes created for prewarm pool
>+        https://bugs.webkit.org/show_bug.cgi?id=189364
>+
>+        Reviewed by Chris Dumez.
>+
>+        Do some basic prewarming for newly created processes.
>+
>+        * Sources.txt:
>+        * WebCore.xcodeproj/project.pbxproj:
>+        * css/CSSDefaultStyleSheets.cpp:
>+        (WebCore::CSSDefaultStyleSheets::loadFullDefaultStyle):
>+        * css/CSSDefaultStyleSheets.h:
>+        * page/Frame.cpp:
>+        (WebCore::Frame::Frame):
>+        * page/ProcessWarming.cpp: Added.
>+        (WebCore::ProcessWarming::initializeNames):
>+
>+        Factor name initialization into a function.
>+
>+        (WebCore::ProcessWarming::prewarm):
>+
>+        Prewarm
>+        - names
>+        - settings (system fonts)
>+        - user agent stylesheet
>+        - JavaScript VM
>+        - telephone number detection
>+
>+        * page/ProcessWarming.h: Added.
>+
> 2018-09-05  Zalan Bujtas <zalan@apple.com>
> 
>         [LFC][BFC] Move MarginCollapse class under BlockFormattingContext::Geometry
>Index: Source/WebCore/Sources.txt
>===================================================================
>--- Source/WebCore/Sources.txt	(revision 235669)
>+++ Source/WebCore/Sources.txt	(working copy)
>@@ -1416,6 +1416,7 @@ page/PerformanceTiming.cpp
> page/PerformanceUserTiming.cpp
> page/PointerLockController.cpp
> page/PrintContext.cpp
>+page/ProcessWarming.cpp
> page/RemoteDOMWindow.cpp
> page/RemoteFrame.cpp
> page/ResourceUsageOverlay.cpp
>Index: Source/WebCore/WebCore.xcodeproj/project.pbxproj
>===================================================================
>--- Source/WebCore/WebCore.xcodeproj/project.pbxproj	(revision 235669)
>+++ Source/WebCore/WebCore.xcodeproj/project.pbxproj	(working copy)
>@@ -4715,6 +4715,7 @@
> 		E401C27517CE53EC00C41A35 /* ElementIteratorAssertions.h in Headers */ = {isa = PBXBuildFile; fileRef = E401C27417CE53EC00C41A35 /* ElementIteratorAssertions.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		E401E0A41C3C0B8300F34D10 /* StyleChange.h in Headers */ = {isa = PBXBuildFile; fileRef = E401E0A31C3C0B8300F34D10 /* StyleChange.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		E419041F1CC6486B00C35F5D /* FontSelectorClient.h in Headers */ = {isa = PBXBuildFile; fileRef = E419041E1CC6486B00C35F5D /* FontSelectorClient.h */; settings = {ATTRIBUTES = (Private, ); }; };
>+		E42050172141901B0066EF3B /* ProcessWarming.h in Headers */ = {isa = PBXBuildFile; fileRef = E42050142141901A0066EF3B /* ProcessWarming.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		E424A39E1330DF0100CF6DC9 /* LegacyTileGridTile.h in Headers */ = {isa = PBXBuildFile; fileRef = E424A39D1330DF0100CF6DC9 /* LegacyTileGridTile.h */; };
> 		E425A49A18292B840020CFCF /* CollectionIndexCache.h in Headers */ = {isa = PBXBuildFile; fileRef = E425A49918292B840020CFCF /* CollectionIndexCache.h */; settings = {ATTRIBUTES = (Private, ); }; };
> 		E4295FA412B0614E00D1ACE0 /* ResourceLoadPriority.h in Headers */ = {isa = PBXBuildFile; fileRef = E4295FA312B0614E00D1ACE0 /* ResourceLoadPriority.h */; settings = {ATTRIBUTES = (Private, ); }; };
>@@ -9801,10 +9802,10 @@
> 		834DFACC1F7DAE5600C2725B /* SharedStringHash.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SharedStringHash.h; sourceTree = "<group>"; };
> 		834DFACE1F7DAE5700C2725B /* SharedStringHash.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = SharedStringHash.cpp; sourceTree = "<group>"; };
> 		8350C3E71DA59B6200355424 /* ScrollLogicalPosition.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ScrollLogicalPosition.h; sourceTree = "<group>"; };
>-		8350C3E81DA59B6200355424 /* ScrollLogicalPosition.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = ScrollLogicalPosition.idl; sourceTree = "<group>"; };
> 		8350C3E71DA59B6200355435 /* ScrollIntoViewOptions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ScrollIntoViewOptions.h; sourceTree = "<group>"; };
>-		8350C3E81DA59B6200355435 /* ScrollIntoViewOptions.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = ScrollIntoViewOptions.idl; sourceTree = "<group>"; };
> 		8350C3E71DA59B6200356446 /* ScrollToOptions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ScrollToOptions.h; sourceTree = "<group>"; };
>+		8350C3E81DA59B6200355424 /* ScrollLogicalPosition.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = ScrollLogicalPosition.idl; sourceTree = "<group>"; };
>+		8350C3E81DA59B6200355435 /* ScrollIntoViewOptions.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = ScrollIntoViewOptions.idl; sourceTree = "<group>"; };
> 		8350C3E81DA59B6200356446 /* ScrollToOptions.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = ScrollToOptions.idl; sourceTree = "<group>"; };
> 		83520C7D1A71BFCC006BD2AA /* CSSFontFamily.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CSSFontFamily.h; sourceTree = "<group>"; };
> 		835657C61ECAB0E800CDE72D /* JSDOMMatrixInit.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSDOMMatrixInit.cpp; sourceTree = "<group>"; };
>@@ -9942,10 +9943,10 @@
> 		83E8667F1FBA5640008855C5 /* ServiceWorkerData.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ServiceWorkerData.cpp; sourceTree = "<group>"; };
> 		83E959E11B8BC22B004D9385 /* NativeNodeFilter.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = NativeNodeFilter.h; sourceTree = "<group>"; };
> 		83E9B3001DA5A51E00FFD8D4 /* JSScrollLogicalPosition.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSScrollLogicalPosition.cpp; sourceTree = "<group>"; };
>-		83E9B3011DA5A51E00FFD8D4 /* JSScrollLogicalPosition.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSScrollLogicalPosition.h; sourceTree = "<group>"; };
> 		83E9B3001DA5A51E00FFD8E5 /* JSScrollIntoViewOptions.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSScrollIntoViewOptions.cpp; sourceTree = "<group>"; };
>-		83E9B3011DA5A51E00FFD8E5 /* JSScrollIntoViewOptions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSScrollIntoViewOptions.h; sourceTree = "<group>"; };
> 		83E9B3001DA5A51E00FFE8F6 /* JSScrollToOptions.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSScrollToOptions.cpp; sourceTree = "<group>"; };
>+		83E9B3011DA5A51E00FFD8D4 /* JSScrollLogicalPosition.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSScrollLogicalPosition.h; sourceTree = "<group>"; };
>+		83E9B3011DA5A51E00FFD8E5 /* JSScrollIntoViewOptions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSScrollIntoViewOptions.h; sourceTree = "<group>"; };
> 		83E9B3011DA5A51E00FFE8F6 /* JSScrollToOptions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSScrollToOptions.h; sourceTree = "<group>"; };
> 		83EE598B1F50958B003E8B30 /* JSErrorCallback.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = JSErrorCallback.h; sourceTree = "<group>"; };
> 		83EE598C1F50958B003E8B30 /* JSErrorCallback.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSErrorCallback.cpp; sourceTree = "<group>"; };
>@@ -14311,6 +14312,8 @@
> 		E419041E1CC6486B00C35F5D /* FontSelectorClient.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = FontSelectorClient.h; sourceTree = "<group>"; };
> 		E41EA038119836DB00710BC5 /* CSSPropertyNames.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CSSPropertyNames.cpp; sourceTree = "<group>"; };
> 		E41EA0391198374900710BC5 /* CSSValueKeywords.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = CSSValueKeywords.cpp; sourceTree = "<group>"; };
>+		E42050142141901A0066EF3B /* ProcessWarming.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ProcessWarming.h; sourceTree = "<group>"; };
>+		E42050162141901B0066EF3B /* ProcessWarming.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ProcessWarming.cpp; sourceTree = "<group>"; };
> 		E424A39D1330DF0100CF6DC9 /* LegacyTileGridTile.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = LegacyTileGridTile.h; sourceTree = "<group>"; };
> 		E424A39F1330DF1E00CF6DC9 /* LegacyTileGridTile.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = LegacyTileGridTile.mm; sourceTree = "<group>"; };
> 		E425A49918292B840020CFCF /* CollectionIndexCache.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CollectionIndexCache.h; sourceTree = "<group>"; };
>@@ -19413,6 +19416,8 @@
> 				3772B09516535856000A49CA /* PopupOpeningObserver.h */,
> 				B776D43C1104527500BEB0EC /* PrintContext.cpp */,
> 				B776D43A1104525D00BEB0EC /* PrintContext.h */,
>+				E42050162141901B0066EF3B /* ProcessWarming.cpp */,
>+				E42050142141901A0066EF3B /* ProcessWarming.h */,
> 				46B9518D207D632A00A7D2DD /* RemoteDOMWindow.cpp */,
> 				46B9518E207D632A00A7D2DD /* RemoteDOMWindow.h */,
> 				46BCBBC3208500A700710638 /* RemoteDOMWindow.idl */,
>@@ -28760,6 +28765,7 @@
> 				D6489D26166FFCF1007C031B /* JSHTMLTemplateElement.h in Headers */,
> 				A80E7E9D0A1A83E3007FB8C5 /* JSHTMLTextAreaElement.h in Headers */,
> 				83E359A21BB1031D002CEB98 /* JSHTMLTimeElement.h in Headers */,
>+				E42050172141901B0066EF3B /* ProcessWarming.h in Headers */,
> 				A80E7B0C0A19D606007FB8C5 /* JSHTMLTitleElement.h in Headers */,
> 				070756D414239A4F00414161 /* JSHTMLTrackElement.h in Headers */,
> 				1A85B2110A1B258700D8C87C /* JSHTMLUListElement.h in Headers */,
>Index: Source/WebCore/css/CSSDefaultStyleSheets.cpp
>===================================================================
>--- Source/WebCore/css/CSSDefaultStyleSheets.cpp	(revision 235669)
>+++ Source/WebCore/css/CSSDefaultStyleSheets.cpp	(working copy)
>@@ -142,6 +142,9 @@ void CSSDefaultStyleSheets::addToDefault
> 
> void CSSDefaultStyleSheets::loadFullDefaultStyle()
> {
>+    if (defaultStyle && !simpleDefaultStyleSheet)
>+        return;
>+    
>     if (simpleDefaultStyleSheet) {
>         ASSERT(defaultStyle);
>         ASSERT(defaultPrintStyle == defaultStyle);
>Index: Source/WebCore/css/CSSDefaultStyleSheets.h
>===================================================================
>--- Source/WebCore/css/CSSDefaultStyleSheets.h	(revision 235669)
>+++ Source/WebCore/css/CSSDefaultStyleSheets.h	(working copy)
>@@ -49,9 +49,9 @@ public:
> 
>     static void initDefaultStyle(const Element*);
>     static void ensureDefaultStyleSheetsForElement(const Element&);
>+    static void loadFullDefaultStyle();
> 
> private:
>-    static void loadFullDefaultStyle();
>     static void loadSimpleDefaultStyle();
>     static void addToDefaultStyle(StyleSheetContents&);
> };
>Index: Source/WebCore/page/Frame.cpp
>===================================================================
>--- Source/WebCore/page/Frame.cpp	(revision 235669)
>+++ Source/WebCore/page/Frame.cpp	(working copy)
>@@ -69,14 +69,13 @@
> #include "InspectorInstrumentation.h"
> #include "JSWindowProxy.h"
> #include "Logging.h"
>-#include "MathMLNames.h"
>-#include "MediaFeatureNames.h"
> #include "NavigationScheduler.h"
> #include "Navigator.h"
> #include "NodeList.h"
> #include "NodeTraversal.h"
> #include "Page.h"
> #include "PageCache.h"
>+#include "ProcessWarming.h"
> #include "RenderLayerCompositor.h"
> #include "RenderTableCell.h"
> #include "RenderText.h"
>@@ -87,7 +86,6 @@
> #include "RuntimeEnabledFeatures.h"
> #include "SVGDocument.h"
> #include "SVGDocumentExtensions.h"
>-#include "SVGNames.h"
> #include "ScriptController.h"
> #include "ScriptSourceCode.h"
> #include "ScrollingCoordinator.h"
>@@ -101,10 +99,6 @@
> #include "UserScript.h"
> #include "UserTypingGestureIndicator.h"
> #include "VisibleUnits.h"
>-#include "WebKitFontFamilyNames.h"
>-#include "XLinkNames.h"
>-#include "XMLNSNames.h"
>-#include "XMLNames.h"
> #include "markup.h"
> #include "npruntime_impl.h"
> #include "runtime_root.h"
>@@ -171,16 +165,7 @@ Frame::Frame(Page& page, HTMLFrameOwnerE
>     , m_activeDOMObjectsAndAnimationsSuspendedCount(0)
>     , m_eventHandler(makeUniqueRef<EventHandler>(*this))
> {
>-    AtomicString::init();
>-    HTMLNames::init();
>-    QualifiedName::init();
>-    MediaFeatureNames::init();
>-    SVGNames::init();
>-    XLinkNames::init();
>-    MathMLNames::init();
>-    XMLNSNames::init();
>-    XMLNames::init();
>-    WebKitFontFamilyNames::init();
>+    ProcessWarming::initializeNames();
> 
>     if (ownerElement) {
>         m_mainFrame.selfOnlyRef();
>Index: Source/WebCore/page/ProcessWarming.cpp
>===================================================================
>--- Source/WebCore/page/ProcessWarming.cpp	(nonexistent)
>+++ Source/WebCore/page/ProcessWarming.cpp	(working copy)
>@@ -0,0 +1,79 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#include "config.h"
>+#include "ProcessWarming.h"
>+
>+#include "CSSDefaultStyleSheets.h"
>+#include "CommonVM.h"
>+#include "Font.h"
>+#include "FontCache.h"
>+#include "HTMLNames.h"
>+#include "MathMLNames.h"
>+#include "MediaFeatureNames.h"
>+#include "QualifiedName.h"
>+#include "SVGNames.h"
>+#include "Settings.h"
>+#include "TelephoneNumberDetector.h"
>+#include "WebKitFontFamilyNames.h"
>+#include "XLinkNames.h"
>+#include "XMLNSNames.h"
>+#include "XMLNames.h"
>+
>+namespace WebCore {
>+
>+void ProcessWarming::initializeNames()
>+{
>+    AtomicString::init();
>+    HTMLNames::init();
>+    QualifiedName::init();
>+    MediaFeatureNames::init();
>+    SVGNames::init();
>+    XLinkNames::init();
>+    MathMLNames::init();
>+    XMLNSNames::init();
>+    XMLNames::init();
>+    WebKitFontFamilyNames::init();
>+}
>+    
>+void ProcessWarming::prewarm()
>+{
>+    initializeNames();
>+    
>+    // Initializes default font families.
>+    Settings::create(nullptr);
>+    
>+    // Prewarms user agent stylesheet.
>+    CSSDefaultStyleSheets::loadFullDefaultStyle();
>+    
>+    // Prewarms JS VM.
>+    commonVM();
>+    
>+#if ENABLE(TELEPHONE_NUMBER_DETECTION)
>+    TelephoneNumberDetector::isSupported();
>+#endif
>+}
>+
>+}
>Index: Source/WebCore/page/ProcessWarming.h
>===================================================================
>--- Source/WebCore/page/ProcessWarming.h	(nonexistent)
>+++ Source/WebCore/page/ProcessWarming.h	(working copy)
>@@ -0,0 +1,36 @@
>+/*
>+ * Copyright (C) 2018 Apple Inc. All rights reserved.
>+ *
>+ * Redistribution and use in source and binary forms, with or without
>+ * modification, are permitted provided that the following conditions
>+ * are met:
>+ * 1. Redistributions of source code must retain the above copyright
>+ *    notice, this list of conditions and the following disclaimer.
>+ * 2. Redistributions in binary form must reproduce the above copyright
>+ *    notice, this list of conditions and the following disclaimer in the
>+ *    documentation and/or other materials provided with the distribution.
>+ *
>+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
>+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
>+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
>+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
>+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
>+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
>+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
>+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>+ * THE POSSIBILITY OF SUCH DAMAGE.
>+ */
>+
>+#pragma once
>+
>+namespace WebCore {
>+
>+class WEBCORE_EXPORT ProcessWarming {
>+public:
>+    static void initializeNames();
>+    static void prewarm();
>+};
>+
>+}
>Index: Source/WebKit/ChangeLog
>===================================================================
>--- Source/WebKit/ChangeLog	(revision 235749)
>+++ Source/WebKit/ChangeLog	(working copy)
>@@ -1,3 +1,17 @@
>+2018-09-06  Antti Koivisto  <antti@apple.com>
>+
>+        Actively prewarm processes created for prewarm pool
>+        https://bugs.webkit.org/show_bug.cgi?id=189364
>+
>+        Reviewed by Chris Dumez.
>+
>+        * UIProcess/WebProcessPool.cpp:
>+        (WebKit::WebProcessPool::createNewWebProcess):
>+        * WebProcess/WebProcess.cpp:
>+        (WebKit::WebProcess::prewarm):
>+        * WebProcess/WebProcess.h:
>+        * WebProcess/WebProcess.messages.in:
>+
> 2018-09-06  Wenson Hsieh  <wenson_hsieh@apple.com>
> 
>         [macOS] Cannot change font size at selection until font panel is shown
>Index: Source/WebKit/UIProcess/WebProcessPool.cpp
>===================================================================
>--- Source/WebKit/UIProcess/WebProcessPool.cpp	(revision 235669)
>+++ Source/WebKit/UIProcess/WebProcessPool.cpp	(working copy)
>@@ -777,6 +777,8 @@ WebProcessProxy& WebProcessPool::createN
>     if (isPrewarmed == WebProcessProxy::IsPrewarmed::Yes) {
>         ASSERT(!m_prewarmedProcess);
>         m_prewarmedProcess = &process;
>+        
>+        m_prewarmedProcess->send(Messages::WebProcess::Prewarm(), 0);
>     }
> 
>     if (m_serviceWorkerProcessesTerminationTimer.isActive())
>Index: Source/WebKit/WebProcess/WebProcess.cpp
>===================================================================
>--- Source/WebKit/WebProcess/WebProcess.cpp	(revision 235669)
>+++ Source/WebKit/WebProcess/WebProcess.cpp	(working copy)
>@@ -107,6 +107,7 @@
> #include <WebCore/PageCache.h>
> #include <WebCore/PageGroup.h>
> #include <WebCore/PlatformMediaSessionManager.h>
>+#include <WebCore/ProcessWarming.h>
> #include <WebCore/ResourceLoadObserver.h>
> #include <WebCore/ResourceLoadStatistics.h>
> #include <WebCore/RuntimeApplicationChecks.h>
>@@ -601,6 +602,11 @@ void WebProcess::removeWebPage(uint64_t 
>     enableTermination();
>     updateCPULimit();
> }
>+    
>+void WebProcess::prewarm()
>+{
>+    WebCore::ProcessWarming::prewarm();
>+}
> 
> bool WebProcess::shouldTerminate()
> {
>Index: Source/WebKit/WebProcess/WebProcess.h
>===================================================================
>--- Source/WebKit/WebProcess/WebProcess.h	(revision 235669)
>+++ Source/WebKit/WebProcess/WebProcess.h	(working copy)
>@@ -129,6 +129,8 @@ public:
>     void createWebPage(uint64_t pageID, WebPageCreationParameters&&);
>     void removeWebPage(uint64_t pageID);
>     WebPage* focusedWebPage() const;
>+    
>+    void prewarm();
> 
>     InjectedBundle* injectedBundle() const { return m_injectedBundle.get(); }
> 
>Index: Source/WebKit/WebProcess/WebProcess.messages.in
>===================================================================
>--- Source/WebKit/WebProcess/WebProcess.messages.in	(revision 235669)
>+++ Source/WebKit/WebProcess/WebProcess.messages.in	(working copy)
>@@ -26,6 +26,8 @@ messages -> WebProcess LegacyReceiver {
>     # Create a new page.
>     CreateWebPage(uint64_t newPageID, struct WebKit::WebPageCreationParameters pageCreationParameters)
> 
>+    Prewarm();
>+ 
>     # Global preferences.
>     SetCacheModel(uint32_t cacheModel)
>

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Attachments on bug 189364: 349055 | 349058 | 349059 | 349066 | 349069