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<title>[175342] trunk/Source/WebCore</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/175342">175342</a></dd>
<dt>Author</dt> <dd>antti@apple.com</dd>
<dt>Date</dt> <dd>2014-10-29 13:54:45 -0700 (Wed, 29 Oct 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Factor cache validity computation functions out of CachedResource
https://bugs.webkit.org/show_bug.cgi?id=138156
Reviewed by Andreas Kling.
These can be used to implement cache logic on WebKit level.
* CMakeLists.txt:
* WebCore.exp.in:
* WebCore.vcxproj/WebCore.vcxproj:
* WebCore.xcodeproj/project.pbxproj:
* loader/CacheValidation.cpp: Added.
(WebCore::computeCurrentAge):
(WebCore::computeFreshnessLifetimeForHTTPFamily):
(WebCore::updateRedirectChainStatus):
(WebCore::redirectChainAllowsReuse):
* loader/CacheValidation.h: Added.
(WebCore::RedirectChainCacheStatus::RedirectChainCacheStatus):
* loader/cache/CachedResource.cpp:
(WebCore::updateResponseHeadersAfterRevalidation):
(WebCore::CachedResource::CachedResource):
(WebCore::CachedResource::isExpired):
(WebCore::CachedResource::freshnessLifetime):
(WebCore::CachedResource::willSendRequest):
(WebCore::CachedResource::updateResponseAfterRevalidation):
(WebCore::CachedResource::redirectChainAllowsReuse):
(WebCore::currentAge): Deleted.
* loader/cache/CachedResource.h:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreCMakeListstxt">trunk/Source/WebCore/CMakeLists.txt</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreWebCoreexpin">trunk/Source/WebCore/WebCore.exp.in</a></li>
<li><a href="#trunkSourceWebCoreWebCorevcxprojWebCorevcxproj">trunk/Source/WebCore/WebCore.vcxproj/WebCore.vcxproj</a></li>
<li><a href="#trunkSourceWebCoreWebCorexcodeprojprojectpbxproj">trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj</a></li>
<li><a href="#trunkSourceWebCoreloadercacheCachedResourcecpp">trunk/Source/WebCore/loader/cache/CachedResource.cpp</a></li>
<li><a href="#trunkSourceWebCoreloadercacheCachedResourceh">trunk/Source/WebCore/loader/cache/CachedResource.h</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreloaderCacheValidationcpp">trunk/Source/WebCore/loader/CacheValidation.cpp</a></li>
<li><a href="#trunkSourceWebCoreloaderCacheValidationh">trunk/Source/WebCore/loader/CacheValidation.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreCMakeListstxt"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/CMakeLists.txt (175341 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/CMakeLists.txt 2014-10-29 20:48:31 UTC (rev 175341)
+++ trunk/Source/WebCore/CMakeLists.txt 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -1857,6 +1857,7 @@
</span><span class="cx"> loader/cache/CachedSVGDocumentReference.cpp
</span><span class="cx"> loader/cache/CachedScript.cpp
</span><span class="cx"> loader/cache/CachedXSLStyleSheet.cpp
</span><ins>+ loader/cache/CacheValidation.cpp
</ins><span class="cx"> loader/cache/MemoryCache.cpp
</span><span class="cx">
</span><span class="cx"> loader/icon/IconController.cpp
</span></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (175341 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2014-10-29 20:48:31 UTC (rev 175341)
+++ trunk/Source/WebCore/ChangeLog 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -1,3 +1,34 @@
</span><ins>+2014-10-29 Antti Koivisto <antti@apple.com>
+
+ Factor cache validity computation functions out of CachedResource
+ https://bugs.webkit.org/show_bug.cgi?id=138156
+
+ Reviewed by Andreas Kling.
+
+ These can be used to implement cache logic on WebKit level.
+
+ * CMakeLists.txt:
+ * WebCore.exp.in:
+ * WebCore.vcxproj/WebCore.vcxproj:
+ * WebCore.xcodeproj/project.pbxproj:
+ * loader/CacheValidation.cpp: Added.
+ (WebCore::computeCurrentAge):
+ (WebCore::computeFreshnessLifetimeForHTTPFamily):
+ (WebCore::updateRedirectChainStatus):
+ (WebCore::redirectChainAllowsReuse):
+ * loader/CacheValidation.h: Added.
+ (WebCore::RedirectChainCacheStatus::RedirectChainCacheStatus):
+ * loader/cache/CachedResource.cpp:
+ (WebCore::updateResponseHeadersAfterRevalidation):
+ (WebCore::CachedResource::CachedResource):
+ (WebCore::CachedResource::isExpired):
+ (WebCore::CachedResource::freshnessLifetime):
+ (WebCore::CachedResource::willSendRequest):
+ (WebCore::CachedResource::updateResponseAfterRevalidation):
+ (WebCore::CachedResource::redirectChainAllowsReuse):
+ (WebCore::currentAge): Deleted.
+ * loader/cache/CachedResource.h:
+
</ins><span class="cx"> 2014-10-28 Ada Chan <adachan@apple.com>
</span><span class="cx">
</span><span class="cx"> Add API to mute/unmute a page.
</span></span></pre></div>
<a id="trunkSourceWebCoreWebCoreexpin"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/WebCore.exp.in (175341 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/WebCore.exp.in 2014-10-29 20:48:31 UTC (rev 175341)
+++ trunk/Source/WebCore/WebCore.exp.in 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -779,6 +779,7 @@
</span><span class="cx"> __ZN7WebCore17SQLiteTransactionD1Ev
</span><span class="cx"> __ZN7WebCore17SubresourceLoader6createEPNS_5FrameEPNS_14CachedResourceERKNS_15ResourceRequestERKNS_21ResourceLoaderOptionsE
</span><span class="cx"> __ZN7WebCore17cacheDOMStructureEPNS_17JSDOMGlobalObjectEPN3JSC9StructureEPKNS2_9ClassInfoE
</span><ins>+__ZN7WebCore17computeCurrentAgeERKNS_16ResourceResponseEd
</ins><span class="cx"> __ZN7WebCore17encodeForFileNameERKN3WTF6StringE
</span><span class="cx"> __ZN7WebCore17execStateFromPageERNS_15DOMWrapperWorldEPNS_4PageE
</span><span class="cx"> __ZN7WebCore17languageDidChangeEv
</span><span class="lines">@@ -844,6 +845,7 @@
</span><span class="cx"> __ZN7WebCore19ResourceRequestBase13setHTTPMethodERKN3WTF6StringE
</span><span class="cx"> __ZN7WebCore19ResourceRequestBase15setHTTPReferrerERKN3WTF6StringE
</span><span class="cx"> __ZN7WebCore19ResourceRequestBase18setHTTPContentTypeERKN3WTF6StringE
</span><ins>+__ZN7WebCore19ResourceRequestBase18setHTTPHeaderFieldENS_14HTTPHeaderNameERKN3WTF6StringE
</ins><span class="cx"> __ZN7WebCore19ResourceRequestBase19setHTTPHeaderFieldsENS_13HTTPHeaderMapE
</span><span class="cx"> __ZN7WebCore19ResourceRequestBase22defaultTimeoutIntervalEv
</span><span class="cx"> __ZN7WebCore19ResourceRequestBase24s_defaultTimeoutIntervalE
</span><span class="lines">@@ -1042,10 +1044,12 @@
</span><span class="cx"> __ZN7WebCore24fileSystemRepresentationERKN3WTF6StringE
</span><span class="cx"> __ZN7WebCore24notifyHistoryItemChangedE
</span><span class="cx"> __ZN7WebCore24pathByAppendingComponentERKN3WTF6StringES3_
</span><ins>+__ZN7WebCore24redirectChainAllowsReuseENS_24RedirectChainCacheStatusE
</ins><span class="cx"> __ZN7WebCore25addLanguageChangeObserverEPvPFvS0_E
</span><span class="cx"> __ZN7WebCore25computeViewportAttributesENS_17ViewportArgumentsEiiifNS_7IntSizeE
</span><span class="cx"> __ZN7WebCore25createCanonicalUUIDStringEv
</span><span class="cx"> __ZN7WebCore25getOutOfLineCachedWrapperEPNS_17JSDOMGlobalObjectEPNS_4NodeE
</span><ins>+__ZN7WebCore25updateRedirectChainStatusERNS_24RedirectChainCacheStatusERKNS_16ResourceResponseE
</ins><span class="cx"> __ZN7WebCore26ContextDestructionObserver16contextDestroyedEv
</span><span class="cx"> __ZN7WebCore26ContextDestructionObserverC2EPNS_22ScriptExecutionContextE
</span><span class="cx"> __ZN7WebCore26ContextDestructionObserverD2Ev
</span><span class="lines">@@ -1087,6 +1091,8 @@
</span><span class="cx"> __ZN7WebCore36standardUserAgentWithApplicationNameERKN3WTF6StringES3_
</span><span class="cx"> __ZN7WebCore37WidgetHierarchyUpdatesSuspensionScope11moveWidgetsEv
</span><span class="cx"> __ZN7WebCore37WidgetHierarchyUpdatesSuspensionScope35s_widgetHierarchyUpdateSuspendCountE
</span><ins>+__ZN7WebCore37computeFreshnessLifetimeForHTTPFamilyERKNS_16ResourceResponseEd
+__ZN7WebCore38updateResponseHeadersAfterRevalidationERNS_16ResourceResponseERKS0_
</ins><span class="cx"> __ZN7WebCore3URL10invalidateEv
</span><span class="cx"> __ZN7WebCore3URL11setProtocolERKN3WTF6StringE
</span><span class="cx"> __ZN7WebCore3URL7setPathERKN3WTF6StringE
</span><span class="lines">@@ -1842,7 +1848,11 @@
</span><span class="cx"> __ZNK7WebCore19ProtectionSpaceBase5realmEv
</span><span class="cx"> __ZNK7WebCore19ProtectionSpaceBase7isProxyEv
</span><span class="cx"> __ZNK7WebCore19ResourceRequestBase10httpMethodEv
</span><ins>+__ZNK7WebCore19ResourceRequestBase11cachePolicyEv
+__ZNK7WebCore19ResourceRequestBase13isConditionalEv
</ins><span class="cx"> __ZNK7WebCore19ResourceRequestBase15httpContentTypeEv
</span><ins>+__ZNK7WebCore19ResourceRequestBase15httpHeaderFieldENS_14HTTPHeaderNameE
+__ZNK7WebCore19ResourceRequestBase15httpHeaderFieldERKN3WTF6StringE
</ins><span class="cx"> __ZNK7WebCore19ResourceRequestBase20firstPartyForCookiesEv
</span><span class="cx"> __ZNK7WebCore19ResourceRequestBase3urlEv
</span><span class="cx"> __ZNK7WebCore19ResourceRequestBase6isNullEv
</span><span class="lines">@@ -1863,6 +1873,10 @@
</span><span class="cx"> __ZNK7WebCore20ResourceResponseBase17suggestedFilenameEv
</span><span class="cx"> __ZNK7WebCore20ResourceResponseBase21expectedContentLengthEv
</span><span class="cx"> __ZNK7WebCore20ResourceResponseBase22includeCertificateInfoEv
</span><ins>+__ZNK7WebCore20ResourceResponseBase23hasCacheValidatorFieldsEv
+__ZNK7WebCore20ResourceResponseBase27cacheControlContainsNoCacheEv
+__ZNK7WebCore20ResourceResponseBase27cacheControlContainsNoStoreEv
+__ZNK7WebCore20ResourceResponseBase34cacheControlContainsMustRevalidateEv
</ins><span class="cx"> __ZNK7WebCore20ResourceResponseBase3urlEv
</span><span class="cx"> __ZNK7WebCore20ResourceResponseBase6isHTTPEv
</span><span class="cx"> __ZNK7WebCore20ResourceResponseBase8lazyInitENS0_9InitLevelE
</span><span class="lines">@@ -2279,6 +2293,7 @@
</span><span class="cx"> __ZN7WebCore15ResourceRequest41updateFromDelegatePreservingOldPropertiesERKS0_
</span><span class="cx"> __ZN7WebCore16FontPlatformDataC1EP6NSFontfbbbNS_15FontOrientationENS_16FontWidthVariantE
</span><span class="cx"> __ZN7WebCore16FontPlatformDataC2EP6NSFontfbbbNS_15FontOrientationENS_16FontWidthVariantE
</span><ins>+__ZN7WebCore16JSXMLHttpRequest9toWrappedEN3JSC7JSValueE
</ins><span class="cx"> __ZN7WebCore16colorFromNSColorEP7NSColor
</span><span class="cx"> __ZN7WebCore16deleteAllCookiesERKNS_21NetworkStorageSessionE
</span><span class="cx"> __ZN7WebCore16enclosingIntRectERK7_NSRect
</span></span></pre></div>
<a id="trunkSourceWebCoreWebCorevcxprojWebCorevcxproj"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/WebCore.vcxproj/WebCore.vcxproj (175341 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/WebCore.vcxproj/WebCore.vcxproj 2014-10-29 20:48:31 UTC (rev 175341)
+++ trunk/Source/WebCore/WebCore.vcxproj/WebCore.vcxproj 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -7340,6 +7340,7 @@
</span><span class="cx"> <ClCompile Include="..\loader\cache\CachedSVGDocumentReference.cpp" />
</span><span class="cx"> <ClCompile Include="..\loader\cache\CachedTextTrack.cpp" />
</span><span class="cx"> <ClCompile Include="..\loader\cache\CachedXSLStyleSheet.cpp" />
</span><ins>+ <ClCompile Include="..\loader\cache\CacheValidation.cpp" />
</ins><span class="cx"> <ClCompile Include="..\loader\cache\MemoryCache.cpp" />
</span><span class="cx"> <ClCompile Include="..\platform\audio\AudioHardwareListener.cpp" />
</span><span class="cx"> <ClCompile Include="..\platform\CalculationValue.cpp" />
</span><span class="lines">@@ -19308,6 +19309,7 @@
</span><span class="cx"> <ClInclude Include="..\loader\cache\CachedTextTrack.h" />
</span><span class="cx"> <ClInclude Include="..\loader\cache\CachedXSLStyleSheet.h" />
</span><span class="cx"> <ClInclude Include="..\loader\cache\CachePolicy.h" />
</span><ins>+ <ClInclude Include="..\loader\cache\CacheValidation.h" />
</ins><span class="cx"> <ClInclude Include="..\loader\cache\MemoryCache.h" />
</span><span class="cx"> <ClInclude Include="..\platform\audio\AudioHardwareListener.h" />
</span><span class="cx"> <ClInclude Include="..\platform\CalculationValue.h" />
</span></span></pre></div>
<a id="trunkSourceWebCoreWebCorexcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj (175341 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2014-10-29 20:48:31 UTC (rev 175341)
+++ trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -6164,6 +6164,8 @@
</span><span class="cx"> E453904D0EAFD637003695C8 /* WidgetIOS.mm in Sources */ = {isa = PBXBuildFile; fileRef = E453903C0EAFD637003695C8 /* WidgetIOS.mm */; };
</span><span class="cx"> E45390AE0EAFF4B5003695C8 /* SystemMemoryIOS.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E45390AD0EAFF4B5003695C8 /* SystemMemoryIOS.cpp */; };
</span><span class="cx"> E462A4A1113E71BE004A4220 /* IntPointHash.h in Headers */ = {isa = PBXBuildFile; fileRef = E462A4A0113E71BE004A4220 /* IntPointHash.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><ins>+ E467680E1A0177EE00B9E26B /* CacheValidation.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E467680D1A0177EE00B9E26B /* CacheValidation.cpp */; };
+ E46768101A0177F900B9E26B /* CacheValidation.h in Headers */ = {isa = PBXBuildFile; fileRef = E467680F1A0177F900B9E26B /* CacheValidation.h */; settings = {ATTRIBUTES = (Private, ); }; };
</ins><span class="cx"> E46A2B1C17CA65B9000DBCD8 /* TypedElementDescendantIterator.h in Headers */ = {isa = PBXBuildFile; fileRef = E46A2B1B17CA65B9000DBCD8 /* TypedElementDescendantIterator.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><span class="cx"> E46A2B1E17CA76B1000DBCD8 /* ElementChildIterator.h in Headers */ = {isa = PBXBuildFile; fileRef = E46A2B1D17CA76B1000DBCD8 /* ElementChildIterator.h */; settings = {ATTRIBUTES = (Private, ); }; };
</span><span class="cx"> E47127CA163438A100ED6F5A /* StyleInvalidationAnalysis.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E47A97CE163059FC005DCD99 /* StyleInvalidationAnalysis.cpp */; };
</span><span class="lines">@@ -13693,6 +13695,8 @@
</span><span class="cx"> E453903C0EAFD637003695C8 /* WidgetIOS.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = WidgetIOS.mm; path = ios/WidgetIOS.mm; sourceTree = "<group>"; };
</span><span class="cx"> E45390AD0EAFF4B5003695C8 /* SystemMemoryIOS.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SystemMemoryIOS.cpp; path = ios/SystemMemoryIOS.cpp; sourceTree = "<group>"; };
</span><span class="cx"> E462A4A0113E71BE004A4220 /* IntPointHash.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IntPointHash.h; sourceTree = "<group>"; };
</span><ins>+ E467680D1A0177EE00B9E26B /* CacheValidation.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = CacheValidation.cpp; path = loader/CacheValidation.cpp; sourceTree = SOURCE_ROOT; };
+ E467680F1A0177F900B9E26B /* CacheValidation.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = CacheValidation.h; path = loader/CacheValidation.h; sourceTree = SOURCE_ROOT; };
</ins><span class="cx"> E46A2B1B17CA65B9000DBCD8 /* TypedElementDescendantIterator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TypedElementDescendantIterator.h; sourceTree = "<group>"; };
</span><span class="cx"> E46A2B1D17CA76B1000DBCD8 /* ElementChildIterator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ElementChildIterator.h; sourceTree = "<group>"; };
</span><span class="cx"> E4778B7D115A581A00B5D372 /* JSCustomEvent.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = JSCustomEvent.cpp; sourceTree = "<group>"; };
</span><span class="lines">@@ -19625,6 +19629,8 @@
</span><span class="cx"> BCB16C0E0979C3BD00467741 /* CachedXSLStyleSheet.cpp */,
</span><span class="cx"> BCB16C0F0979C3BD00467741 /* CachedXSLStyleSheet.h */,
</span><span class="cx"> F587864902DE3A9A01EA4122 /* CachePolicy.h */,
</span><ins>+ E467680D1A0177EE00B9E26B /* CacheValidation.cpp */,
+ E467680F1A0177F900B9E26B /* CacheValidation.h */,
</ins><span class="cx"> BCB16BFE0979C3BD00467741 /* MemoryCache.cpp */,
</span><span class="cx"> BCB16BFF0979C3BD00467741 /* MemoryCache.h */,
</span><span class="cx"> );
</span><span class="lines">@@ -23669,6 +23675,7 @@
</span><span class="cx"> 975CA28B130365F800E99AD9 /* Crypto.h in Headers */,
</span><span class="cx"> E172AF6E180F24C600FBADB9 /* CryptoAlgorithm.h in Headers */,
</span><span class="cx"> E125F8421824253A00D84CD9 /* CryptoAlgorithmAES_CBC.h in Headers */,
</span><ins>+ E46768101A0177F900B9E26B /* CacheValidation.h in Headers */,
</ins><span class="cx"> E1FE137B184D21BB00892F13 /* CryptoAlgorithmAES_KW.h in Headers */,
</span><span class="cx"> E125F83A1824104800D84CD9 /* CryptoAlgorithmAesCbcParams.h in Headers */,
</span><span class="cx"> E19AC3F71824E5D100349426 /* CryptoAlgorithmAesKeyGenParams.h in Headers */,
</span><span class="lines">@@ -27189,6 +27196,7 @@
</span><span class="cx"> FD3160BB12B0272A00C1A359 /* AudioBusMac.mm in Sources */,
</span><span class="cx"> FD31607D12B026F700C1A359 /* AudioChannel.cpp in Sources */,
</span><span class="cx"> FD31600412B0267600C1A359 /* AudioContext.cpp in Sources */,
</span><ins>+ E467680E1A0177EE00B9E26B /* CacheValidation.cpp in Sources */,
</ins><span class="cx"> CD0EEE0E14743F39003EAFA2 /* AudioDestinationIOS.cpp in Sources */,
</span><span class="cx"> FD3160BC12B0272A00C1A359 /* AudioDestinationMac.cpp in Sources */,
</span><span class="cx"> FD31600712B0267600C1A359 /* AudioDestinationNode.cpp in Sources */,
</span></span></pre></div>
<a id="trunkSourceWebCoreloaderCacheValidationcpp"></a>
<div class="addfile"><h4>Added: trunk/Source/WebCore/loader/CacheValidation.cpp (0 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/CacheValidation.cpp (rev 0)
+++ trunk/Source/WebCore/loader/CacheValidation.cpp 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -0,0 +1,92 @@
</span><ins>+/*
+ Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
+ Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
+ Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
+ Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
+ Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+#include "config.h"
+#include "CacheValidation.h"
+
+#include "ResourceResponse.h"
+#include <wtf/CurrentTime.h>
+
+namespace WebCore {
+
+double computeCurrentAge(const ResourceResponse& response, double responseTimestamp)
+{
+ // RFC2616 13.2.3
+ // No compensation for latency as that is not terribly important in practice
+ double dateValue = response.date();
+ double apparentAge = std::isfinite(dateValue) ? std::max(0., responseTimestamp - dateValue) : 0;
+ double ageValue = response.age();
+ double correctedReceivedAge = std::isfinite(ageValue) ? std::max(apparentAge, ageValue) : apparentAge;
+ double residentTime = currentTime() - responseTimestamp;
+ return correctedReceivedAge + residentTime;
+}
+
+double computeFreshnessLifetimeForHTTPFamily(const ResourceResponse& response, double responseTimestamp)
+{
+ ASSERT(response.url().protocolIsInHTTPFamily());
+ // RFC2616 13.2.4
+ double maxAgeValue = response.cacheControlMaxAge();
+ if (std::isfinite(maxAgeValue))
+ return maxAgeValue;
+ double expiresValue = response.expires();
+ double dateValue = response.date();
+ double creationTime = std::isfinite(dateValue) ? dateValue : responseTimestamp;
+ if (std::isfinite(expiresValue))
+ return expiresValue - creationTime;
+ double lastModifiedValue = response.lastModified();
+ if (std::isfinite(lastModifiedValue))
+ return (creationTime - lastModifiedValue) * 0.1;
+ // If no cache headers are present, the specification leaves the decision to the UA. Other browsers seem to opt for 0.
+ return 0;
+}
+
+void updateRedirectChainStatus(RedirectChainCacheStatus& redirectChainCacheStatus, const ResourceResponse& response)
+{
+ if (redirectChainCacheStatus.status == RedirectChainCacheStatus::NotCachedRedirection)
+ return;
+ if (response.cacheControlContainsNoStore() || response.cacheControlContainsNoCache() || response.cacheControlContainsMustRevalidate()) {
+ redirectChainCacheStatus.status = RedirectChainCacheStatus::NotCachedRedirection;
+ return;
+ }
+ redirectChainCacheStatus.status = RedirectChainCacheStatus::CachedRedirection;
+ double responseTimestamp = currentTime();
+ // Store the nearest end of cache validity date
+ double endOfValidity = responseTimestamp + computeFreshnessLifetimeForHTTPFamily(response, responseTimestamp) - computeCurrentAge(response, responseTimestamp);
+ redirectChainCacheStatus.endOfValidity = std::min(redirectChainCacheStatus.endOfValidity, endOfValidity);
+}
+
+bool redirectChainAllowsReuse(RedirectChainCacheStatus redirectChainCacheStatus)
+{
+ switch (redirectChainCacheStatus.status) {
+ case RedirectChainCacheStatus::NoRedirection:
+ return true;
+ case RedirectChainCacheStatus::NotCachedRedirection:
+ return false;
+ case RedirectChainCacheStatus::CachedRedirection:
+ return currentTime() <= redirectChainCacheStatus.endOfValidity;
+ }
+ ASSERT_NOT_REACHED();
+ return false;
+}
+
+}
</ins></span></pre></div>
<a id="trunkSourceWebCoreloaderCacheValidationh"></a>
<div class="addfile"><h4>Added: trunk/Source/WebCore/loader/CacheValidation.h (0 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/CacheValidation.h (rev 0)
+++ trunk/Source/WebCore/loader/CacheValidation.h 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -0,0 +1,52 @@
</span><ins>+/*
+ Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
+ Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
+ Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
+ Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+#ifndef CacheValidation_h
+#define CacheValidation_h
+
+namespace WebCore {
+
+class ResourceResponse;
+
+struct RedirectChainCacheStatus {
+ enum Status {
+ NoRedirection,
+ NotCachedRedirection,
+ CachedRedirection
+ };
+ RedirectChainCacheStatus()
+ : status(NoRedirection)
+ , endOfValidity(std::numeric_limits<double>::max())
+ { }
+ Status status;
+ double endOfValidity;
+};
+
+double computeCurrentAge(const ResourceResponse&, double responseTimestamp);
+double computeFreshnessLifetimeForHTTPFamily(const ResourceResponse&, double responseTimestamp);
+void updateResponseHeadersAfterRevalidation(ResourceResponse&, const ResourceResponse& validatingResponse);
+void updateRedirectChainStatus(RedirectChainCacheStatus&, const ResourceResponse&);
+bool redirectChainAllowsReuse(RedirectChainCacheStatus);
+
+}
+
+#endif
</ins></span></pre></div>
<a id="trunkSourceWebCoreloadercacheCachedResourcecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/loader/cache/CachedResource.cpp (175341 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/cache/CachedResource.cpp 2014-10-29 20:48:31 UTC (rev 175341)
+++ trunk/Source/WebCore/loader/cache/CachedResource.cpp 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -3,7 +3,7 @@
</span><span class="cx"> Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
</span><span class="cx"> Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
</span><span class="cx"> Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
</span><del>- Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
</del><ins>+ Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
</ins><span class="cx">
</span><span class="cx"> This library is free software; you can redistribute it and/or
</span><span class="cx"> modify it under the terms of the GNU Library General Public
</span><span class="lines">@@ -104,6 +104,22 @@
</span><span class="cx"> return true;
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+void updateResponseHeadersAfterRevalidation(ResourceResponse& response, const ResourceResponse& validatingResponse)
+{
+ // RFC2616 10.3.5
+ // Update cached headers from the 304 response
+ for (const auto& header : validatingResponse.httpHeaderFields()) {
+ // Entity headers should not be sent by servers when generating a 304
+ // response; misconfigured servers send them anyway. We shouldn't allow
+ // such headers to update the original request. We'll base this on the
+ // list defined by RFC2616 7.1, with a few additions for extension headers
+ // we care about.
+ if (!shouldUpdateHeaderAfterRevalidation(header.key))
+ continue;
+ response.setHTTPHeaderField(header.key, header.value);
+ }
+}
+
</ins><span class="cx"> static ResourceLoadPriority defaultPriorityForResourceType(CachedResource::Type type)
</span><span class="cx"> {
</span><span class="cx"> switch (type) {
</span><span class="lines">@@ -146,18 +162,6 @@
</span><span class="cx"> return memoryCache()->deadDecodedDataDeletionInterval();
</span><span class="cx"> }
</span><span class="cx">
</span><del>-static double currentAge(const ResourceResponse& response, double responseTimestamp)
-{
- // RFC2616 13.2.3
- // No compensation for latency as that is not terribly important in practice
- double dateValue = response.date();
- double apparentAge = std::isfinite(dateValue) ? std::max(0., responseTimestamp - dateValue) : 0;
- double ageValue = response.age();
- double correctedReceivedAge = std::isfinite(ageValue) ? std::max(apparentAge, ageValue) : apparentAge;
- double residentTime = currentTime() - responseTimestamp;
- return correctedReceivedAge + residentTime;
-}
-
</del><span class="cx"> DEFINE_DEBUG_ONLY_GLOBAL(RefCountedLeakCounter, cachedResourceLeakCounter, ("CachedResource"));
</span><span class="cx">
</span><span class="cx"> CachedResource::CachedResource(const ResourceRequest& request, Type type, SessionID sessionID)
</span><span class="lines">@@ -192,8 +196,6 @@
</span><span class="cx"> , m_owningCachedResourceLoader(0)
</span><span class="cx"> , m_resourceToRevalidate(0)
</span><span class="cx"> , m_proxyResource(0)
</span><del>- , m_redirectChainCacheStatus(NoRedirection)
- , m_redirectChainEndOfValidity(std::numeric_limits<double>::max())
</del><span class="cx"> {
</span><span class="cx"> ASSERT(m_type == unsigned(type)); // m_type is a bitfield, so this tests careless updates of the enum.
</span><span class="cx"> ASSERT(sessionID.isValid());
</span><span class="lines">@@ -400,7 +402,7 @@
</span><span class="cx"> if (m_response.isNull())
</span><span class="cx"> return false;
</span><span class="cx">
</span><del>- return currentAge(m_response, m_responseTimestamp) > freshnessLifetime(m_response);
</del><ins>+ return computeCurrentAge(m_response, m_responseTimestamp) > freshnessLifetime(m_response);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> double CachedResource::freshnessLifetime(const ResourceResponse& response) const
</span><span class="lines">@@ -415,20 +417,7 @@
</span><span class="cx"> return std::numeric_limits<double>::max();
</span><span class="cx"> }
</span><span class="cx">
</span><del>- // RFC2616 13.2.4
- double maxAgeValue = response.cacheControlMaxAge();
- if (std::isfinite(maxAgeValue))
- return maxAgeValue;
- double expiresValue = response.expires();
- double dateValue = response.date();
- double creationTime = std::isfinite(dateValue) ? dateValue : m_responseTimestamp;
- if (std::isfinite(expiresValue))
- return expiresValue - creationTime;
- double lastModifiedValue = response.lastModified();
- if (std::isfinite(lastModifiedValue))
- return (creationTime - lastModifiedValue) * 0.1;
- // If no cache headers are present, the specification leaves the decision to the UA. Other browsers seem to opt for 0.
- return 0;
</del><ins>+ return computeFreshnessLifetimeForHTTPFamily(response, m_responseTimestamp);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void CachedResource::willSendRequest(ResourceRequest&, const ResourceResponse& response)
</span><span class="lines">@@ -436,19 +425,7 @@
</span><span class="cx"> m_requestedFromNetworkingLayer = true;
</span><span class="cx"> if (response.isNull())
</span><span class="cx"> return;
</span><del>- if (m_redirectChainCacheStatus == NotCachedRedirection)
- return;
- if (response.cacheControlContainsNoStore()
- || response.cacheControlContainsNoCache()
- || response.cacheControlContainsMustRevalidate())
- m_redirectChainCacheStatus = NotCachedRedirection;
- else {
- m_redirectChainCacheStatus = CachedRedirection;
- double responseTimestamp = currentTime();
- // Store the nearest end of cache validity date
- m_redirectChainEndOfValidity = std::min(m_redirectChainEndOfValidity,
- responseTimestamp + freshnessLifetime(response) - currentAge(response, responseTimestamp));
- }
</del><ins>+ updateRedirectChainStatus(m_redirectChainCacheStatus, response);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void CachedResource::responseReceived(const ResourceResponse& response)
</span><span class="lines">@@ -733,18 +710,7 @@
</span><span class="cx"> {
</span><span class="cx"> m_responseTimestamp = currentTime();
</span><span class="cx">
</span><del>- // RFC2616 10.3.5
- // Update cached headers from the 304 response
- for (const auto& header : validatingResponse.httpHeaderFields()) {
- // Entity headers should not be sent by servers when generating a 304
- // response; misconfigured servers send them anyway. We shouldn't allow
- // such headers to update the original request. We'll base this on the
- // list defined by RFC2616 7.1, with a few additions for extension headers
- // we care about.
- if (!shouldUpdateHeaderAfterRevalidation(header.key))
- continue;
- m_response.setHTTPHeaderField(header.key, header.value);
- }
</del><ins>+ updateResponseHeadersAfterRevalidation(m_response, validatingResponse);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void CachedResource::registerHandle(CachedResourceHandleBase* h)
</span><span class="lines">@@ -807,15 +773,7 @@
</span><span class="cx">
</span><span class="cx"> bool CachedResource::redirectChainAllowsReuse() const
</span><span class="cx"> {
</span><del>- switch (m_redirectChainCacheStatus) {
- case NoRedirection:
- return true;
- case NotCachedRedirection:
- return false;
- case CachedRedirection:
- return currentTime() <= m_redirectChainEndOfValidity;
- }
- return true;
</del><ins>+ return WebCore::redirectChainAllowsReuse(m_redirectChainCacheStatus);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> unsigned CachedResource::overheadSize() const
</span></span></pre></div>
<a id="trunkSourceWebCoreloadercacheCachedResourceh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/loader/cache/CachedResource.h (175341 => 175342)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/loader/cache/CachedResource.h 2014-10-29 20:48:31 UTC (rev 175341)
+++ trunk/Source/WebCore/loader/cache/CachedResource.h 2014-10-29 20:54:45 UTC (rev 175342)
</span><span class="lines">@@ -24,6 +24,7 @@
</span><span class="cx"> #define CachedResource_h
</span><span class="cx">
</span><span class="cx"> #include "CachePolicy.h"
</span><ins>+#include "CacheValidation.h"
</ins><span class="cx"> #include "FrameLoaderTypes.h"
</span><span class="cx"> #include "ResourceError.h"
</span><span class="cx"> #include "ResourceLoadPriority.h"
</span><span class="lines">@@ -88,12 +89,6 @@
</span><span class="cx"> DecodeError
</span><span class="cx"> };
</span><span class="cx">
</span><del>- enum RedirectChainCacheStatus {
- NoRedirection,
- NotCachedRedirection,
- CachedRedirection
- };
-
</del><span class="cx"> CachedResource(const ResourceRequest&, Type, SessionID);
</span><span class="cx"> virtual ~CachedResource();
</span><span class="cx">
</span><span class="lines">@@ -358,7 +353,6 @@
</span><span class="cx"> HashSet<CachedResourceHandleBase*> m_handlesToRevalidate;
</span><span class="cx">
</span><span class="cx"> RedirectChainCacheStatus m_redirectChainCacheStatus;
</span><del>- double m_redirectChainEndOfValidity;
</del><span class="cx"> };
</span><span class="cx">
</span><span class="cx"> } // namespace WebCore
</span></span></pre>
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