| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) | |
| 3 Copyright (C) 2001 Dirk Mueller (mueller@kde.org) | |
| 4 Copyright (C) 2002 Waldo Bastian (bastian@kde.org) | |
| 5 Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) | |
| 6 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All | |
| 7 rights reserved. | |
| 8 | |
| 9 This library is free software; you can redistribute it and/or | |
| 10 modify it under the terms of the GNU Library General Public | |
| 11 License as published by the Free Software Foundation; either | |
| 12 version 2 of the License, or (at your option) any later version. | |
| 13 | |
| 14 This library is distributed in the hope that it will be useful, | |
| 15 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 Library General Public License for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU Library General Public License | |
| 20 along with this library; see the file COPYING.LIB. If not, write to | |
| 21 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 22 Boston, MA 02110-1301, USA. | |
| 23 */ | |
| 24 | |
| 25 #include "core/fetch/Resource.h" | |
| 26 | |
| 27 #include "core/fetch/CachedMetadata.h" | |
| 28 #include "core/fetch/CrossOriginAccessControl.h" | |
| 29 #include "core/fetch/FetchInitiatorTypeNames.h" | |
| 30 #include "core/fetch/FetchRequest.h" | |
| 31 #include "core/fetch/IntegrityMetadata.h" | |
| 32 #include "core/fetch/MemoryCache.h" | |
| 33 #include "core/fetch/ResourceClient.h" | |
| 34 #include "core/fetch/ResourceClientWalker.h" | |
| 35 #include "core/fetch/ResourceLoader.h" | |
| 36 #include "platform/Histogram.h" | |
| 37 #include "platform/InstanceCounters.h" | |
| 38 #include "platform/RuntimeEnabledFeatures.h" | |
| 39 #include "platform/SharedBuffer.h" | |
| 40 #include "platform/WebTaskRunner.h" | |
| 41 #include "platform/instrumentation/tracing/TraceEvent.h" | |
| 42 #include "platform/network/HTTPParsers.h" | |
| 43 #include "platform/weborigin/KURL.h" | |
| 44 #include "public/platform/Platform.h" | |
| 45 #include "public/platform/WebCachePolicy.h" | |
| 46 #include "public/platform/WebScheduler.h" | |
| 47 #include "public/platform/WebSecurityOrigin.h" | |
| 48 #include "wtf/CurrentTime.h" | |
| 49 #include "wtf/MathExtras.h" | |
| 50 #include "wtf/StdLibExtras.h" | |
| 51 #include "wtf/Vector.h" | |
| 52 #include "wtf/text/CString.h" | |
| 53 #include "wtf/text/StringBuilder.h" | |
| 54 #include <algorithm> | |
| 55 #include <cassert> | |
| 56 #include <memory> | |
| 57 #include <stdint.h> | |
| 58 | |
| 59 namespace blink { | |
| 60 | |
| 61 // These response headers are not copied from a revalidated response to the | |
| 62 // cached response headers. For compatibility, this list is based on Chromium's | |
| 63 // net/http/http_response_headers.cc. | |
| 64 const char* const headersToIgnoreAfterRevalidation[] = { | |
| 65 "allow", | |
| 66 "connection", | |
| 67 "etag", | |
| 68 "expires", | |
| 69 "keep-alive", | |
| 70 "last-modified", | |
| 71 "proxy-authenticate", | |
| 72 "proxy-connection", | |
| 73 "trailer", | |
| 74 "transfer-encoding", | |
| 75 "upgrade", | |
| 76 "www-authenticate", | |
| 77 "x-frame-options", | |
| 78 "x-xss-protection", | |
| 79 }; | |
| 80 | |
| 81 // Some header prefixes mean "Don't copy this header from a 304 response.". | |
| 82 // Rather than listing all the relevant headers, we can consolidate them into | |
| 83 // this list, also grabbed from Chromium's net/http/http_response_headers.cc. | |
| 84 const char* const headerPrefixesToIgnoreAfterRevalidation[] = { | |
| 85 "content-", "x-content-", "x-webkit-"}; | |
| 86 | |
| 87 static inline bool shouldUpdateHeaderAfterRevalidation( | |
| 88 const AtomicString& header) { | |
| 89 for (size_t i = 0; i < WTF_ARRAY_LENGTH(headersToIgnoreAfterRevalidation); | |
| 90 i++) { | |
| 91 if (equalIgnoringCase(header, headersToIgnoreAfterRevalidation[i])) | |
| 92 return false; | |
| 93 } | |
| 94 for (size_t i = 0; | |
| 95 i < WTF_ARRAY_LENGTH(headerPrefixesToIgnoreAfterRevalidation); i++) { | |
| 96 if (header.startsWith(headerPrefixesToIgnoreAfterRevalidation[i], | |
| 97 TextCaseASCIIInsensitive)) | |
| 98 return false; | |
| 99 } | |
| 100 return true; | |
| 101 } | |
| 102 | |
| 103 class Resource::CachedMetadataHandlerImpl : public CachedMetadataHandler { | |
| 104 public: | |
| 105 static Resource::CachedMetadataHandlerImpl* create(Resource* resource) { | |
| 106 return new CachedMetadataHandlerImpl(resource); | |
| 107 } | |
| 108 ~CachedMetadataHandlerImpl() override {} | |
| 109 DECLARE_VIRTUAL_TRACE(); | |
| 110 void setCachedMetadata(uint32_t, const char*, size_t, CacheType) override; | |
| 111 void clearCachedMetadata(CacheType) override; | |
| 112 PassRefPtr<CachedMetadata> cachedMetadata(uint32_t) const override; | |
| 113 String encoding() const override; | |
| 114 // Sets the serialized metadata retrieved from the platform's cache. | |
| 115 void setSerializedCachedMetadata(const char*, size_t); | |
| 116 | |
| 117 protected: | |
| 118 explicit CachedMetadataHandlerImpl(Resource*); | |
| 119 virtual void sendToPlatform(); | |
| 120 const ResourceResponse& response() const { return m_resource->response(); } | |
| 121 | |
| 122 RefPtr<CachedMetadata> m_cachedMetadata; | |
| 123 | |
| 124 private: | |
| 125 Member<Resource> m_resource; | |
| 126 }; | |
| 127 | |
| 128 Resource::CachedMetadataHandlerImpl::CachedMetadataHandlerImpl( | |
| 129 Resource* resource) | |
| 130 : m_resource(resource) {} | |
| 131 | |
| 132 DEFINE_TRACE(Resource::CachedMetadataHandlerImpl) { | |
| 133 visitor->trace(m_resource); | |
| 134 CachedMetadataHandler::trace(visitor); | |
| 135 } | |
| 136 | |
| 137 void Resource::CachedMetadataHandlerImpl::setCachedMetadata( | |
| 138 uint32_t dataTypeID, | |
| 139 const char* data, | |
| 140 size_t size, | |
| 141 CachedMetadataHandler::CacheType cacheType) { | |
| 142 // Currently, only one type of cached metadata per resource is supported. If | |
| 143 // the need arises for multiple types of metadata per resource this could be | |
| 144 // enhanced to store types of metadata in a map. | |
| 145 DCHECK(!m_cachedMetadata); | |
| 146 m_cachedMetadata = CachedMetadata::create(dataTypeID, data, size); | |
| 147 if (cacheType == CachedMetadataHandler::SendToPlatform) | |
| 148 sendToPlatform(); | |
| 149 } | |
| 150 | |
| 151 void Resource::CachedMetadataHandlerImpl::clearCachedMetadata( | |
| 152 CachedMetadataHandler::CacheType cacheType) { | |
| 153 m_cachedMetadata.clear(); | |
| 154 if (cacheType == CachedMetadataHandler::SendToPlatform) | |
| 155 sendToPlatform(); | |
| 156 } | |
| 157 | |
| 158 PassRefPtr<CachedMetadata> Resource::CachedMetadataHandlerImpl::cachedMetadata( | |
| 159 uint32_t dataTypeID) const { | |
| 160 if (!m_cachedMetadata || m_cachedMetadata->dataTypeID() != dataTypeID) | |
| 161 return nullptr; | |
| 162 return m_cachedMetadata.get(); | |
| 163 } | |
| 164 | |
| 165 String Resource::CachedMetadataHandlerImpl::encoding() const { | |
| 166 return m_resource->encoding(); | |
| 167 } | |
| 168 | |
| 169 void Resource::CachedMetadataHandlerImpl::setSerializedCachedMetadata( | |
| 170 const char* data, | |
| 171 size_t size) { | |
| 172 // We only expect to receive cached metadata from the platform once. If this | |
| 173 // triggers, it indicates an efficiency problem which is most likely | |
| 174 // unexpected in code designed to improve performance. | |
| 175 DCHECK(!m_cachedMetadata); | |
| 176 m_cachedMetadata = CachedMetadata::createFromSerializedData(data, size); | |
| 177 } | |
| 178 | |
| 179 void Resource::CachedMetadataHandlerImpl::sendToPlatform() { | |
| 180 if (m_cachedMetadata) { | |
| 181 const Vector<char>& serializedData = m_cachedMetadata->serializedData(); | |
| 182 Platform::current()->cacheMetadata( | |
| 183 response().url(), response().responseTime(), serializedData.data(), | |
| 184 serializedData.size()); | |
| 185 } else { | |
| 186 Platform::current()->cacheMetadata(response().url(), | |
| 187 response().responseTime(), nullptr, 0); | |
| 188 } | |
| 189 } | |
| 190 | |
| 191 class Resource::ServiceWorkerResponseCachedMetadataHandler | |
| 192 : public Resource::CachedMetadataHandlerImpl { | |
| 193 public: | |
| 194 static Resource::CachedMetadataHandlerImpl* create( | |
| 195 Resource* resource, | |
| 196 SecurityOrigin* securityOrigin) { | |
| 197 return new ServiceWorkerResponseCachedMetadataHandler(resource, | |
| 198 securityOrigin); | |
| 199 } | |
| 200 ~ServiceWorkerResponseCachedMetadataHandler() override {} | |
| 201 DECLARE_VIRTUAL_TRACE(); | |
| 202 | |
| 203 protected: | |
| 204 void sendToPlatform() override; | |
| 205 | |
| 206 private: | |
| 207 explicit ServiceWorkerResponseCachedMetadataHandler(Resource*, | |
| 208 SecurityOrigin*); | |
| 209 String m_cacheStorageCacheName; | |
| 210 RefPtr<SecurityOrigin> m_securityOrigin; | |
| 211 }; | |
| 212 | |
| 213 Resource::ServiceWorkerResponseCachedMetadataHandler:: | |
| 214 ServiceWorkerResponseCachedMetadataHandler(Resource* resource, | |
| 215 SecurityOrigin* securityOrigin) | |
| 216 : CachedMetadataHandlerImpl(resource), m_securityOrigin(securityOrigin) {} | |
| 217 | |
| 218 DEFINE_TRACE(Resource::ServiceWorkerResponseCachedMetadataHandler) { | |
| 219 CachedMetadataHandlerImpl::trace(visitor); | |
| 220 } | |
| 221 | |
| 222 void Resource::ServiceWorkerResponseCachedMetadataHandler::sendToPlatform() { | |
| 223 // We don't support sending the metadata to the platform when the response was | |
| 224 // directly fetched via a ServiceWorker (eg: | |
| 225 // FetchEvent.respondWith(fetch(FetchEvent.request))) to prevent an attacker's | |
| 226 // Service Worker from poisoning the metadata cache of HTTPCache. | |
| 227 if (response().cacheStorageCacheName().isNull()) | |
| 228 return; | |
| 229 | |
| 230 if (m_cachedMetadata) { | |
| 231 const Vector<char>& serializedData = m_cachedMetadata->serializedData(); | |
| 232 Platform::current()->cacheMetadataInCacheStorage( | |
| 233 response().url(), response().responseTime(), serializedData.data(), | |
| 234 serializedData.size(), WebSecurityOrigin(m_securityOrigin), | |
| 235 response().cacheStorageCacheName()); | |
| 236 } else { | |
| 237 Platform::current()->cacheMetadataInCacheStorage( | |
| 238 response().url(), response().responseTime(), nullptr, 0, | |
| 239 WebSecurityOrigin(m_securityOrigin), | |
| 240 response().cacheStorageCacheName()); | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 // This class cannot be on-heap because the first callbackHandler() call | |
| 245 // instantiates the singleton object while we can call it in the | |
| 246 // pre-finalization step. | |
| 247 class Resource::ResourceCallback final { | |
| 248 public: | |
| 249 static ResourceCallback& callbackHandler(); | |
| 250 void schedule(Resource*); | |
| 251 void cancel(Resource*); | |
| 252 bool isScheduled(Resource*) const; | |
| 253 | |
| 254 private: | |
| 255 ResourceCallback(); | |
| 256 | |
| 257 void runTask(); | |
| 258 TaskHandle m_taskHandle; | |
| 259 HashSet<Persistent<Resource>> m_resourcesWithPendingClients; | |
| 260 }; | |
| 261 | |
| 262 Resource::ResourceCallback& Resource::ResourceCallback::callbackHandler() { | |
| 263 DEFINE_STATIC_LOCAL(ResourceCallback, callbackHandler, ()); | |
| 264 return callbackHandler; | |
| 265 } | |
| 266 | |
| 267 Resource::ResourceCallback::ResourceCallback() {} | |
| 268 | |
| 269 void Resource::ResourceCallback::schedule(Resource* resource) { | |
| 270 if (!m_taskHandle.isActive()) { | |
| 271 // WTF::unretained(this) is safe because a posted task is canceled when | |
| 272 // |m_taskHandle| is destroyed on the dtor of this ResourceCallback. | |
| 273 m_taskHandle = | |
| 274 Platform::current() | |
| 275 ->currentThread() | |
| 276 ->scheduler() | |
| 277 ->loadingTaskRunner() | |
| 278 ->postCancellableTask( | |
| 279 BLINK_FROM_HERE, | |
| 280 WTF::bind(&ResourceCallback::runTask, WTF::unretained(this))); | |
| 281 } | |
| 282 m_resourcesWithPendingClients.add(resource); | |
| 283 } | |
| 284 | |
| 285 void Resource::ResourceCallback::cancel(Resource* resource) { | |
| 286 m_resourcesWithPendingClients.remove(resource); | |
| 287 if (m_taskHandle.isActive() && m_resourcesWithPendingClients.isEmpty()) | |
| 288 m_taskHandle.cancel(); | |
| 289 } | |
| 290 | |
| 291 bool Resource::ResourceCallback::isScheduled(Resource* resource) const { | |
| 292 return m_resourcesWithPendingClients.contains(resource); | |
| 293 } | |
| 294 | |
| 295 void Resource::ResourceCallback::runTask() { | |
| 296 HeapVector<Member<Resource>> resources; | |
| 297 for (const Member<Resource>& resource : m_resourcesWithPendingClients) | |
| 298 resources.push_back(resource.get()); | |
| 299 m_resourcesWithPendingClients.clear(); | |
| 300 | |
| 301 for (const auto& resource : resources) | |
| 302 resource->finishPendingClients(); | |
| 303 } | |
| 304 | |
| 305 constexpr Resource::Status Resource::NotStarted; | |
| 306 constexpr Resource::Status Resource::Pending; | |
| 307 constexpr Resource::Status Resource::Cached; | |
| 308 constexpr Resource::Status Resource::LoadError; | |
| 309 constexpr Resource::Status Resource::DecodeError; | |
| 310 | |
| 311 Resource::Resource(const ResourceRequest& request, | |
| 312 Type type, | |
| 313 const ResourceLoaderOptions& options) | |
| 314 : m_loadFinishTime(0), | |
| 315 m_identifier(0), | |
| 316 m_encodedSize(0), | |
| 317 m_encodedSizeMemoryUsage(0), | |
| 318 m_decodedSize(0), | |
| 319 m_overheadSize(calculateOverheadSize()), | |
| 320 m_preloadCount(0), | |
| 321 m_preloadDiscoveryTime(0.0), | |
| 322 m_cacheIdentifier(MemoryCache::defaultCacheIdentifier()), | |
| 323 m_preloadResult(PreloadNotReferenced), | |
| 324 m_type(type), | |
| 325 m_status(NotStarted), | |
| 326 m_needsSynchronousCacheHit(false), | |
| 327 m_linkPreload(false), | |
| 328 m_isRevalidating(false), | |
| 329 m_isAlive(false), | |
| 330 m_isAddRemoveClientProhibited(false), | |
| 331 m_integrityDisposition(ResourceIntegrityDisposition::NotChecked), | |
| 332 m_options(options), | |
| 333 m_responseTimestamp(currentTime()), | |
| 334 m_cancelTimer(Platform::current()->mainThread()->getWebTaskRunner(), | |
| 335 this, | |
| 336 &Resource::cancelTimerFired), | |
| 337 m_resourceRequest(request) { | |
| 338 InstanceCounters::incrementCounter(InstanceCounters::ResourceCounter); | |
| 339 | |
| 340 // Currently we support the metadata caching only for HTTP family. | |
| 341 if (resourceRequest().url().protocolIsInHTTPFamily()) | |
| 342 m_cacheHandler = CachedMetadataHandlerImpl::create(this); | |
| 343 MemoryCoordinator::instance().registerClient(this); | |
| 344 } | |
| 345 | |
| 346 Resource::~Resource() { | |
| 347 InstanceCounters::decrementCounter(InstanceCounters::ResourceCounter); | |
| 348 } | |
| 349 | |
| 350 DEFINE_TRACE(Resource) { | |
| 351 visitor->trace(m_loader); | |
| 352 visitor->trace(m_cacheHandler); | |
| 353 visitor->trace(m_clients); | |
| 354 visitor->trace(m_clientsAwaitingCallback); | |
| 355 visitor->trace(m_finishedClients); | |
| 356 MemoryCoordinatorClient::trace(visitor); | |
| 357 } | |
| 358 | |
| 359 void Resource::setLoader(ResourceLoader* loader) { | |
| 360 CHECK(!m_loader); | |
| 361 DCHECK(stillNeedsLoad()); | |
| 362 m_loader = loader; | |
| 363 m_status = Pending; | |
| 364 } | |
| 365 | |
| 366 void Resource::checkNotify() { | |
| 367 if (isLoading()) | |
| 368 return; | |
| 369 | |
| 370 ResourceClientWalker<ResourceClient> w(m_clients); | |
| 371 while (ResourceClient* c = w.next()) { | |
| 372 markClientFinished(c); | |
| 373 c->notifyFinished(this); | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 void Resource::markClientFinished(ResourceClient* client) { | |
| 378 if (m_clients.contains(client)) { | |
| 379 m_finishedClients.add(client); | |
| 380 m_clients.remove(client); | |
| 381 } | |
| 382 } | |
| 383 | |
| 384 void Resource::appendData(const char* data, size_t length) { | |
| 385 TRACE_EVENT0("blink", "Resource::appendData"); | |
| 386 DCHECK(!m_isRevalidating); | |
| 387 DCHECK(!errorOccurred()); | |
| 388 if (m_options.dataBufferingPolicy == DoNotBufferData) | |
| 389 return; | |
| 390 if (m_data) | |
| 391 m_data->append(data, length); | |
| 392 else | |
| 393 m_data = SharedBuffer::create(data, length); | |
| 394 setEncodedSize(m_data->size()); | |
| 395 } | |
| 396 | |
| 397 void Resource::setResourceBuffer(PassRefPtr<SharedBuffer> resourceBuffer) { | |
| 398 DCHECK(!m_isRevalidating); | |
| 399 DCHECK(!errorOccurred()); | |
| 400 DCHECK_EQ(m_options.dataBufferingPolicy, BufferData); | |
| 401 m_data = resourceBuffer; | |
| 402 setEncodedSize(m_data->size()); | |
| 403 } | |
| 404 | |
| 405 void Resource::clearData() { | |
| 406 m_data.clear(); | |
| 407 m_encodedSizeMemoryUsage = 0; | |
| 408 } | |
| 409 | |
| 410 void Resource::setDataBufferingPolicy(DataBufferingPolicy dataBufferingPolicy) { | |
| 411 m_options.dataBufferingPolicy = dataBufferingPolicy; | |
| 412 clearData(); | |
| 413 setEncodedSize(0); | |
| 414 } | |
| 415 | |
| 416 void Resource::error(const ResourceError& error) { | |
| 417 DCHECK(!error.isNull()); | |
| 418 m_error = error; | |
| 419 m_isRevalidating = false; | |
| 420 | |
| 421 if (m_error.isCancellation() || !isPreloaded()) | |
| 422 memoryCache()->remove(this); | |
| 423 | |
| 424 if (!errorOccurred()) | |
| 425 setStatus(LoadError); | |
| 426 DCHECK(errorOccurred()); | |
| 427 clearData(); | |
| 428 m_loader = nullptr; | |
| 429 checkNotify(); | |
| 430 } | |
| 431 | |
| 432 void Resource::finish(double loadFinishTime) { | |
| 433 DCHECK(!m_isRevalidating); | |
| 434 m_loadFinishTime = loadFinishTime; | |
| 435 if (!errorOccurred()) | |
| 436 m_status = Cached; | |
| 437 m_loader = nullptr; | |
| 438 checkNotify(); | |
| 439 } | |
| 440 | |
| 441 AtomicString Resource::httpContentType() const { | |
| 442 return extractMIMETypeFromMediaType( | |
| 443 response().httpHeaderField(HTTPNames::Content_Type).lower()); | |
| 444 } | |
| 445 | |
| 446 bool Resource::passesAccessControlCheck(SecurityOrigin* securityOrigin) const { | |
| 447 StoredCredentials storedCredentials = | |
| 448 lastResourceRequest().allowStoredCredentials() | |
| 449 ? AllowStoredCredentials | |
| 450 : DoNotAllowStoredCredentials; | |
| 451 CrossOriginAccessControl::AccessStatus status = | |
| 452 CrossOriginAccessControl::checkAccess(response(), storedCredentials, | |
| 453 securityOrigin); | |
| 454 | |
| 455 return status == CrossOriginAccessControl::kAccessAllowed; | |
| 456 } | |
| 457 | |
| 458 bool Resource::isEligibleForIntegrityCheck( | |
| 459 SecurityOrigin* securityOrigin) const { | |
| 460 return securityOrigin->canRequest(resourceRequest().url()) || | |
| 461 passesAccessControlCheck(securityOrigin); | |
| 462 } | |
| 463 | |
| 464 void Resource::setIntegrityDisposition( | |
| 465 ResourceIntegrityDisposition disposition) { | |
| 466 DCHECK_NE(disposition, ResourceIntegrityDisposition::NotChecked); | |
| 467 DCHECK(m_type == Resource::Script || m_type == Resource::CSSStyleSheet); | |
| 468 m_integrityDisposition = disposition; | |
| 469 } | |
| 470 | |
| 471 bool Resource::mustRefetchDueToIntegrityMetadata( | |
| 472 const FetchRequest& request) const { | |
| 473 if (request.integrityMetadata().isEmpty()) | |
| 474 return false; | |
| 475 | |
| 476 return !IntegrityMetadata::setsEqual(m_integrityMetadata, | |
| 477 request.integrityMetadata()); | |
| 478 } | |
| 479 | |
| 480 static double currentAge(const ResourceResponse& response, | |
| 481 double responseTimestamp) { | |
| 482 // RFC2616 13.2.3 | |
| 483 // No compensation for latency as that is not terribly important in practice | |
| 484 double dateValue = response.date(); | |
| 485 double apparentAge = std::isfinite(dateValue) | |
| 486 ? std::max(0., responseTimestamp - dateValue) | |
| 487 : 0; | |
| 488 double ageValue = response.age(); | |
| 489 double correctedReceivedAge = | |
| 490 std::isfinite(ageValue) ? std::max(apparentAge, ageValue) : apparentAge; | |
| 491 double residentTime = currentTime() - responseTimestamp; | |
| 492 return correctedReceivedAge + residentTime; | |
| 493 } | |
| 494 | |
| 495 double Resource::currentAge() const { | |
| 496 return blink::currentAge(response(), m_responseTimestamp); | |
| 497 } | |
| 498 | |
| 499 static double freshnessLifetime(const ResourceResponse& response, | |
| 500 double responseTimestamp) { | |
| 501 #if !OS(ANDROID) | |
| 502 // On desktop, local files should be reloaded in case they change. | |
| 503 if (response.url().isLocalFile()) | |
| 504 return 0; | |
| 505 #endif | |
| 506 | |
| 507 // Cache other non-http / non-filesystem resources liberally. | |
| 508 if (!response.url().protocolIsInHTTPFamily() && | |
| 509 !response.url().protocolIs("filesystem")) | |
| 510 return std::numeric_limits<double>::max(); | |
| 511 | |
| 512 // RFC2616 13.2.4 | |
| 513 double maxAgeValue = response.cacheControlMaxAge(); | |
| 514 if (std::isfinite(maxAgeValue)) | |
| 515 return maxAgeValue; | |
| 516 double expiresValue = response.expires(); | |
| 517 double dateValue = response.date(); | |
| 518 double creationTime = | |
| 519 std::isfinite(dateValue) ? dateValue : responseTimestamp; | |
| 520 if (std::isfinite(expiresValue)) | |
| 521 return expiresValue - creationTime; | |
| 522 double lastModifiedValue = response.lastModified(); | |
| 523 if (std::isfinite(lastModifiedValue)) | |
| 524 return (creationTime - lastModifiedValue) * 0.1; | |
| 525 // If no cache headers are present, the specification leaves the decision to | |
| 526 // the UA. Other browsers seem to opt for 0. | |
| 527 return 0; | |
| 528 } | |
| 529 | |
| 530 double Resource::freshnessLifetime() const { | |
| 531 return blink::freshnessLifetime(response(), m_responseTimestamp); | |
| 532 } | |
| 533 | |
| 534 double Resource::stalenessLifetime() const { | |
| 535 return response().cacheControlStaleWhileRevalidate(); | |
| 536 } | |
| 537 | |
| 538 static bool canUseResponse(const ResourceResponse& response, | |
| 539 double responseTimestamp) { | |
| 540 if (response.isNull()) | |
| 541 return false; | |
| 542 | |
| 543 // FIXME: Why isn't must-revalidate considered a reason we can't use the | |
| 544 // response? | |
| 545 if (response.cacheControlContainsNoCache() || | |
| 546 response.cacheControlContainsNoStore()) | |
| 547 return false; | |
| 548 | |
| 549 if (response.httpStatusCode() == 303) { | |
| 550 // Must not be cached. | |
| 551 return false; | |
| 552 } | |
| 553 | |
| 554 if (response.httpStatusCode() == 302 || response.httpStatusCode() == 307) { | |
| 555 // Default to not cacheable unless explicitly allowed. | |
| 556 bool hasMaxAge = std::isfinite(response.cacheControlMaxAge()); | |
| 557 bool hasExpires = std::isfinite(response.expires()); | |
| 558 // TODO: consider catching Cache-Control "private" and "public" here. | |
| 559 if (!hasMaxAge && !hasExpires) | |
| 560 return false; | |
| 561 } | |
| 562 | |
| 563 return currentAge(response, responseTimestamp) <= | |
| 564 freshnessLifetime(response, responseTimestamp); | |
| 565 } | |
| 566 | |
| 567 const ResourceRequest& Resource::lastResourceRequest() const { | |
| 568 if (!m_redirectChain.size()) | |
| 569 return resourceRequest(); | |
| 570 return m_redirectChain.back().m_request; | |
| 571 } | |
| 572 | |
| 573 void Resource::setRevalidatingRequest(const ResourceRequest& request) { | |
| 574 SECURITY_CHECK(m_redirectChain.isEmpty()); | |
| 575 DCHECK(!request.isNull()); | |
| 576 CHECK(!m_isRevalidationStartForbidden); | |
| 577 m_isRevalidating = true; | |
| 578 m_resourceRequest = request; | |
| 579 m_status = NotStarted; | |
| 580 } | |
| 581 | |
| 582 bool Resource::willFollowRedirect(const ResourceRequest& newRequest, | |
| 583 const ResourceResponse& redirectResponse) { | |
| 584 if (m_isRevalidating) | |
| 585 revalidationFailed(); | |
| 586 m_redirectChain.push_back(RedirectPair(newRequest, redirectResponse)); | |
| 587 return true; | |
| 588 } | |
| 589 | |
| 590 void Resource::setResponse(const ResourceResponse& response) { | |
| 591 m_response = response; | |
| 592 if (this->response().wasFetchedViaServiceWorker()) { | |
| 593 m_cacheHandler = ServiceWorkerResponseCachedMetadataHandler::create( | |
| 594 this, m_fetcherSecurityOrigin.get()); | |
| 595 } | |
| 596 } | |
| 597 | |
| 598 void Resource::responseReceived(const ResourceResponse& response, | |
| 599 std::unique_ptr<WebDataConsumerHandle>) { | |
| 600 m_responseTimestamp = currentTime(); | |
| 601 if (m_preloadDiscoveryTime) { | |
| 602 int timeSinceDiscovery = static_cast<int>( | |
| 603 1000 * (monotonicallyIncreasingTime() - m_preloadDiscoveryTime)); | |
| 604 DEFINE_STATIC_LOCAL(CustomCountHistogram, | |
| 605 preloadDiscoveryToFirstByteHistogram, | |
| 606 ("PreloadScanner.TTFB", 0, 10000, 50)); | |
| 607 preloadDiscoveryToFirstByteHistogram.count(timeSinceDiscovery); | |
| 608 } | |
| 609 | |
| 610 if (m_isRevalidating) { | |
| 611 if (response.httpStatusCode() == 304) { | |
| 612 revalidationSucceeded(response); | |
| 613 return; | |
| 614 } | |
| 615 revalidationFailed(); | |
| 616 } | |
| 617 setResponse(response); | |
| 618 String encoding = response.textEncodingName(); | |
| 619 if (!encoding.isNull()) | |
| 620 setEncoding(encoding); | |
| 621 } | |
| 622 | |
| 623 void Resource::setSerializedCachedMetadata(const char* data, size_t size) { | |
| 624 DCHECK(!m_isRevalidating); | |
| 625 DCHECK(!response().isNull()); | |
| 626 if (m_cacheHandler) | |
| 627 m_cacheHandler->setSerializedCachedMetadata(data, size); | |
| 628 } | |
| 629 | |
| 630 CachedMetadataHandler* Resource::cacheHandler() { | |
| 631 return m_cacheHandler.get(); | |
| 632 } | |
| 633 | |
| 634 String Resource::reasonNotDeletable() const { | |
| 635 StringBuilder builder; | |
| 636 if (hasClientsOrObservers()) { | |
| 637 builder.append("hasClients("); | |
| 638 builder.appendNumber(m_clients.size()); | |
| 639 if (!m_clientsAwaitingCallback.isEmpty()) { | |
| 640 builder.append(", AwaitingCallback="); | |
| 641 builder.appendNumber(m_clientsAwaitingCallback.size()); | |
| 642 } | |
| 643 if (!m_finishedClients.isEmpty()) { | |
| 644 builder.append(", Finished="); | |
| 645 builder.appendNumber(m_finishedClients.size()); | |
| 646 } | |
| 647 builder.append(')'); | |
| 648 } | |
| 649 if (m_loader) { | |
| 650 if (!builder.isEmpty()) | |
| 651 builder.append(' '); | |
| 652 builder.append("m_loader"); | |
| 653 } | |
| 654 if (m_preloadCount) { | |
| 655 if (!builder.isEmpty()) | |
| 656 builder.append(' '); | |
| 657 builder.append("m_preloadCount("); | |
| 658 builder.appendNumber(m_preloadCount); | |
| 659 builder.append(')'); | |
| 660 } | |
| 661 if (memoryCache()->contains(this)) { | |
| 662 if (!builder.isEmpty()) | |
| 663 builder.append(' '); | |
| 664 builder.append("in_memory_cache"); | |
| 665 } | |
| 666 return builder.toString(); | |
| 667 } | |
| 668 | |
| 669 void Resource::didAddClient(ResourceClient* c) { | |
| 670 if (isLoaded()) { | |
| 671 c->notifyFinished(this); | |
| 672 if (m_clients.contains(c)) { | |
| 673 m_finishedClients.add(c); | |
| 674 m_clients.remove(c); | |
| 675 } | |
| 676 } | |
| 677 } | |
| 678 | |
| 679 static bool typeNeedsSynchronousCacheHit(Resource::Type type) { | |
| 680 // Some resources types default to return data synchronously. For most of | |
| 681 // these, it's because there are layout tests that expect data to return | |
| 682 // synchronously in case of cache hit. In the case of fonts, there was a | |
| 683 // performance regression. | |
| 684 // FIXME: Get to the point where we don't need to special-case sync/async | |
| 685 // behavior for different resource types. | |
| 686 if (type == Resource::Image) | |
| 687 return true; | |
| 688 if (type == Resource::CSSStyleSheet) | |
| 689 return true; | |
| 690 if (type == Resource::Script) | |
| 691 return true; | |
| 692 if (type == Resource::Font) | |
| 693 return true; | |
| 694 return false; | |
| 695 } | |
| 696 | |
| 697 void Resource::willAddClientOrObserver(PreloadReferencePolicy policy) { | |
| 698 if (policy == MarkAsReferenced && m_preloadResult == PreloadNotReferenced) { | |
| 699 if (isLoaded()) | |
| 700 m_preloadResult = PreloadReferencedWhileComplete; | |
| 701 else if (isLoading()) | |
| 702 m_preloadResult = PreloadReferencedWhileLoading; | |
| 703 else | |
| 704 m_preloadResult = PreloadReferenced; | |
| 705 | |
| 706 if (m_preloadDiscoveryTime) { | |
| 707 int timeSinceDiscovery = static_cast<int>( | |
| 708 1000 * (monotonicallyIncreasingTime() - m_preloadDiscoveryTime)); | |
| 709 DEFINE_STATIC_LOCAL(CustomCountHistogram, preloadDiscoveryHistogram, | |
| 710 ("PreloadScanner.ReferenceTime", 0, 10000, 50)); | |
| 711 preloadDiscoveryHistogram.count(timeSinceDiscovery); | |
| 712 } | |
| 713 } | |
| 714 if (!hasClientsOrObservers()) { | |
| 715 m_isAlive = true; | |
| 716 } | |
| 717 } | |
| 718 | |
| 719 void Resource::addClient(ResourceClient* client, | |
| 720 PreloadReferencePolicy policy) { | |
| 721 CHECK(!m_isAddRemoveClientProhibited); | |
| 722 | |
| 723 willAddClientOrObserver(policy); | |
| 724 | |
| 725 if (m_isRevalidating) { | |
| 726 m_clients.add(client); | |
| 727 return; | |
| 728 } | |
| 729 | |
| 730 // If an error has occurred or we have existing data to send to the new client | |
| 731 // and the resource type supprts it, send it asynchronously. | |
| 732 if ((errorOccurred() || !response().isNull()) && | |
| 733 !typeNeedsSynchronousCacheHit(getType()) && !m_needsSynchronousCacheHit) { | |
| 734 m_clientsAwaitingCallback.add(client); | |
| 735 ResourceCallback::callbackHandler().schedule(this); | |
| 736 return; | |
| 737 } | |
| 738 | |
| 739 m_clients.add(client); | |
| 740 didAddClient(client); | |
| 741 return; | |
| 742 } | |
| 743 | |
| 744 void Resource::removeClient(ResourceClient* client) { | |
| 745 CHECK(!m_isAddRemoveClientProhibited); | |
| 746 | |
| 747 // This code may be called in a pre-finalizer, where weak members in the | |
| 748 // HashCountedSet are already swept out. | |
| 749 | |
| 750 if (m_finishedClients.contains(client)) | |
| 751 m_finishedClients.remove(client); | |
| 752 else if (m_clientsAwaitingCallback.contains(client)) | |
| 753 m_clientsAwaitingCallback.remove(client); | |
| 754 else | |
| 755 m_clients.remove(client); | |
| 756 | |
| 757 if (m_clientsAwaitingCallback.isEmpty()) | |
| 758 ResourceCallback::callbackHandler().cancel(this); | |
| 759 | |
| 760 didRemoveClientOrObserver(); | |
| 761 } | |
| 762 | |
| 763 void Resource::didRemoveClientOrObserver() { | |
| 764 if (!hasClientsOrObservers() && m_isAlive) { | |
| 765 m_isAlive = false; | |
| 766 allClientsAndObserversRemoved(); | |
| 767 | |
| 768 // RFC2616 14.9.2: | |
| 769 // "no-store: ... MUST make a best-effort attempt to remove the information | |
| 770 // from volatile storage as promptly as possible" | |
| 771 // "... History buffers MAY store such responses as part of their normal | |
| 772 // operation." | |
| 773 // We allow non-secure content to be reused in history, but we do not allow | |
| 774 // secure content to be reused. | |
| 775 if (hasCacheControlNoStoreHeader() && url().protocolIs("https")) | |
| 776 memoryCache()->remove(this); | |
| 777 } | |
| 778 } | |
| 779 | |
| 780 void Resource::allClientsAndObserversRemoved() { | |
| 781 if (!m_loader) | |
| 782 return; | |
| 783 if (!m_cancelTimer.isActive()) | |
| 784 m_cancelTimer.startOneShot(0, BLINK_FROM_HERE); | |
| 785 } | |
| 786 | |
| 787 void Resource::cancelTimerFired(TimerBase* timer) { | |
| 788 DCHECK_EQ(timer, &m_cancelTimer); | |
| 789 if (!hasClientsOrObservers() && m_loader) | |
| 790 m_loader->cancel(); | |
| 791 } | |
| 792 | |
| 793 void Resource::setDecodedSize(size_t decodedSize) { | |
| 794 if (decodedSize == m_decodedSize) | |
| 795 return; | |
| 796 size_t oldSize = size(); | |
| 797 m_decodedSize = decodedSize; | |
| 798 memoryCache()->update(this, oldSize, size()); | |
| 799 } | |
| 800 | |
| 801 void Resource::setEncodedSize(size_t encodedSize) { | |
| 802 if (encodedSize == m_encodedSize && encodedSize == m_encodedSizeMemoryUsage) | |
| 803 return; | |
| 804 size_t oldSize = size(); | |
| 805 m_encodedSize = encodedSize; | |
| 806 m_encodedSizeMemoryUsage = encodedSize; | |
| 807 memoryCache()->update(this, oldSize, size()); | |
| 808 } | |
| 809 | |
| 810 void Resource::finishPendingClients() { | |
| 811 // We're going to notify clients one by one. It is simple if the client does | |
| 812 // nothing. However there are a couple other things that can happen. | |
| 813 // | |
| 814 // 1. Clients can be added during the loop. Make sure they are not processed. | |
| 815 // 2. Clients can be removed during the loop. Make sure they are always | |
| 816 // available to be removed. Also don't call removed clients or add them | |
| 817 // back. | |
| 818 // | |
| 819 // Handle case (1) by saving a list of clients to notify. A separate list also | |
| 820 // ensure a client is either in m_clients or m_clientsAwaitingCallback. | |
| 821 HeapVector<Member<ResourceClient>> clientsToNotify; | |
| 822 copyToVector(m_clientsAwaitingCallback, clientsToNotify); | |
| 823 | |
| 824 for (const auto& client : clientsToNotify) { | |
| 825 // Handle case (2) to skip removed clients. | |
| 826 if (!m_clientsAwaitingCallback.remove(client)) | |
| 827 continue; | |
| 828 m_clients.add(client); | |
| 829 | |
| 830 // When revalidation starts after waiting clients are scheduled and | |
| 831 // before they are added here. In such cases, we just add the clients | |
| 832 // to |m_clients| without didAddClient(), as in Resource::addClient(). | |
| 833 if (!m_isRevalidating) | |
| 834 didAddClient(client); | |
| 835 } | |
| 836 | |
| 837 // It is still possible for the above loop to finish a new client | |
| 838 // synchronously. If there's no client waiting we should deschedule. | |
| 839 bool scheduled = ResourceCallback::callbackHandler().isScheduled(this); | |
| 840 if (scheduled && m_clientsAwaitingCallback.isEmpty()) | |
| 841 ResourceCallback::callbackHandler().cancel(this); | |
| 842 | |
| 843 // Prevent the case when there are clients waiting but no callback scheduled. | |
| 844 DCHECK(m_clientsAwaitingCallback.isEmpty() || scheduled); | |
| 845 } | |
| 846 | |
| 847 void Resource::prune() { | |
| 848 destroyDecodedDataIfPossible(); | |
| 849 } | |
| 850 | |
| 851 void Resource::onMemoryStateChange(MemoryState state) { | |
| 852 if (state != MemoryState::SUSPENDED) | |
| 853 return; | |
| 854 prune(); | |
| 855 if (!m_cacheHandler) | |
| 856 return; | |
| 857 m_cacheHandler->clearCachedMetadata(CachedMetadataHandler::CacheLocally); | |
| 858 } | |
| 859 | |
| 860 void Resource::onMemoryDump(WebMemoryDumpLevelOfDetail levelOfDetail, | |
| 861 WebProcessMemoryDump* memoryDump) const { | |
| 862 static const size_t kMaxURLReportLength = 128; | |
| 863 static const int kMaxResourceClientToShowInMemoryInfra = 10; | |
| 864 | |
| 865 const String dumpName = getMemoryDumpName(); | |
| 866 WebMemoryAllocatorDump* dump = | |
| 867 memoryDump->createMemoryAllocatorDump(dumpName); | |
| 868 dump->addScalar("encoded_size", "bytes", m_encodedSizeMemoryUsage); | |
| 869 if (hasClientsOrObservers()) | |
| 870 dump->addScalar("live_size", "bytes", m_encodedSizeMemoryUsage); | |
| 871 else | |
| 872 dump->addScalar("dead_size", "bytes", m_encodedSizeMemoryUsage); | |
| 873 | |
| 874 if (m_data) | |
| 875 m_data->onMemoryDump(dumpName, memoryDump); | |
| 876 | |
| 877 if (levelOfDetail == WebMemoryDumpLevelOfDetail::Detailed) { | |
| 878 String urlToReport = url().getString(); | |
| 879 if (urlToReport.length() > kMaxURLReportLength) { | |
| 880 urlToReport.truncate(kMaxURLReportLength); | |
| 881 urlToReport = urlToReport + "..."; | |
| 882 } | |
| 883 dump->addString("url", "", urlToReport); | |
| 884 | |
| 885 dump->addString("reason_not_deletable", "", reasonNotDeletable()); | |
| 886 | |
| 887 Vector<String> clientNames; | |
| 888 ResourceClientWalker<ResourceClient> walker(m_clients); | |
| 889 while (ResourceClient* client = walker.next()) | |
| 890 clientNames.push_back(client->debugName()); | |
| 891 ResourceClientWalker<ResourceClient> walker2(m_clientsAwaitingCallback); | |
| 892 while (ResourceClient* client = walker2.next()) | |
| 893 clientNames.push_back("(awaiting) " + client->debugName()); | |
| 894 ResourceClientWalker<ResourceClient> walker3(m_finishedClients); | |
| 895 while (ResourceClient* client = walker3.next()) | |
| 896 clientNames.push_back("(finished) " + client->debugName()); | |
| 897 std::sort(clientNames.begin(), clientNames.end(), | |
| 898 WTF::codePointCompareLessThan); | |
| 899 | |
| 900 StringBuilder builder; | |
| 901 for (size_t i = 0; | |
| 902 i < clientNames.size() && i < kMaxResourceClientToShowInMemoryInfra; | |
| 903 ++i) { | |
| 904 if (i > 0) | |
| 905 builder.append(" / "); | |
| 906 builder.append(clientNames[i]); | |
| 907 } | |
| 908 if (clientNames.size() > kMaxResourceClientToShowInMemoryInfra) { | |
| 909 builder.append(" / and "); | |
| 910 builder.appendNumber(clientNames.size() - | |
| 911 kMaxResourceClientToShowInMemoryInfra); | |
| 912 builder.append(" more"); | |
| 913 } | |
| 914 dump->addString("ResourceClient", "", builder.toString()); | |
| 915 } | |
| 916 | |
| 917 const String overheadName = dumpName + "/metadata"; | |
| 918 WebMemoryAllocatorDump* overheadDump = | |
| 919 memoryDump->createMemoryAllocatorDump(overheadName); | |
| 920 overheadDump->addScalar("size", "bytes", overheadSize()); | |
| 921 memoryDump->addSuballocation( | |
| 922 overheadDump->guid(), String(WTF::Partitions::kAllocatedObjectPoolName)); | |
| 923 } | |
| 924 | |
| 925 String Resource::getMemoryDumpName() const { | |
| 926 return String::format( | |
| 927 "web_cache/%s_resources/%ld", | |
| 928 resourceTypeToString(getType(), options().initiatorInfo.name), | |
| 929 m_identifier); | |
| 930 } | |
| 931 | |
| 932 void Resource::setCachePolicyBypassingCache() { | |
| 933 m_resourceRequest.setCachePolicy(WebCachePolicy::BypassingCache); | |
| 934 } | |
| 935 | |
| 936 void Resource::setPreviewsStateNoTransform() { | |
| 937 m_resourceRequest.setPreviewsState(WebURLRequest::PreviewsNoTransform); | |
| 938 } | |
| 939 | |
| 940 void Resource::clearRangeRequestHeader() { | |
| 941 m_resourceRequest.clearHTTPHeaderField("range"); | |
| 942 } | |
| 943 | |
| 944 void Resource::revalidationSucceeded( | |
| 945 const ResourceResponse& validatingResponse) { | |
| 946 SECURITY_CHECK(m_redirectChain.isEmpty()); | |
| 947 SECURITY_CHECK(equalIgnoringFragmentIdentifier(validatingResponse.url(), | |
| 948 response().url())); | |
| 949 m_response.setResourceLoadTiming(validatingResponse.resourceLoadTiming()); | |
| 950 | |
| 951 // RFC2616 10.3.5 | |
| 952 // Update cached headers from the 304 response | |
| 953 const HTTPHeaderMap& newHeaders = validatingResponse.httpHeaderFields(); | |
| 954 for (const auto& header : newHeaders) { | |
| 955 // Entity headers should not be sent by servers when generating a 304 | |
| 956 // response; misconfigured servers send them anyway. We shouldn't allow such | |
| 957 // headers to update the original request. We'll base this on the list | |
| 958 // defined by RFC2616 7.1, with a few additions for extension headers we | |
| 959 // care about. | |
| 960 if (!shouldUpdateHeaderAfterRevalidation(header.key)) | |
| 961 continue; | |
| 962 m_response.setHTTPHeaderField(header.key, header.value); | |
| 963 } | |
| 964 | |
| 965 m_isRevalidating = false; | |
| 966 } | |
| 967 | |
| 968 void Resource::revalidationFailed() { | |
| 969 SECURITY_CHECK(m_redirectChain.isEmpty()); | |
| 970 clearData(); | |
| 971 m_cacheHandler.clear(); | |
| 972 destroyDecodedDataForFailedRevalidation(); | |
| 973 m_isRevalidating = false; | |
| 974 } | |
| 975 | |
| 976 bool Resource::canReuseRedirectChain() const { | |
| 977 for (auto& redirect : m_redirectChain) { | |
| 978 if (!canUseResponse(redirect.m_redirectResponse, m_responseTimestamp)) | |
| 979 return false; | |
| 980 if (redirect.m_request.cacheControlContainsNoCache() || | |
| 981 redirect.m_request.cacheControlContainsNoStore()) | |
| 982 return false; | |
| 983 } | |
| 984 return true; | |
| 985 } | |
| 986 | |
| 987 bool Resource::hasCacheControlNoStoreHeader() const { | |
| 988 return response().cacheControlContainsNoStore() || | |
| 989 resourceRequest().cacheControlContainsNoStore(); | |
| 990 } | |
| 991 | |
| 992 bool Resource::hasVaryHeader() const { | |
| 993 return !response().httpHeaderField(HTTPNames::Vary).isNull(); | |
| 994 } | |
| 995 | |
| 996 bool Resource::mustRevalidateDueToCacheHeaders() const { | |
| 997 return !canUseResponse(response(), m_responseTimestamp) || | |
| 998 resourceRequest().cacheControlContainsNoCache() || | |
| 999 resourceRequest().cacheControlContainsNoStore(); | |
| 1000 } | |
| 1001 | |
| 1002 bool Resource::canUseCacheValidator() const { | |
| 1003 if (isLoading() || errorOccurred()) | |
| 1004 return false; | |
| 1005 | |
| 1006 if (hasCacheControlNoStoreHeader()) | |
| 1007 return false; | |
| 1008 | |
| 1009 // Do not revalidate Resource with redirects. https://crbug.com/613971 | |
| 1010 if (!redirectChain().isEmpty()) | |
| 1011 return false; | |
| 1012 | |
| 1013 return response().hasCacheValidatorFields() || | |
| 1014 resourceRequest().hasCacheValidatorFields(); | |
| 1015 } | |
| 1016 | |
| 1017 size_t Resource::calculateOverheadSize() const { | |
| 1018 static const int kAverageClientsHashMapSize = 384; | |
| 1019 return sizeof(Resource) + response().memoryUsage() + | |
| 1020 kAverageClientsHashMapSize + | |
| 1021 resourceRequest().url().getString().length() * 2; | |
| 1022 } | |
| 1023 | |
| 1024 void Resource::didChangePriority(ResourceLoadPriority loadPriority, | |
| 1025 int intraPriorityValue) { | |
| 1026 m_resourceRequest.setPriority(loadPriority, intraPriorityValue); | |
| 1027 if (m_loader) | |
| 1028 m_loader->didChangePriority(loadPriority, intraPriorityValue); | |
| 1029 } | |
| 1030 | |
| 1031 // TODO(toyoshim): Consider to generate automatically. https://crbug.com/675515. | |
| 1032 static const char* initiatorTypeNameToString( | |
| 1033 const AtomicString& initiatorTypeName) { | |
| 1034 if (initiatorTypeName == FetchInitiatorTypeNames::css) | |
| 1035 return "CSS resource"; | |
| 1036 if (initiatorTypeName == FetchInitiatorTypeNames::document) | |
| 1037 return "Document"; | |
| 1038 if (initiatorTypeName == FetchInitiatorTypeNames::icon) | |
| 1039 return "Icon"; | |
| 1040 if (initiatorTypeName == FetchInitiatorTypeNames::internal) | |
| 1041 return "Internal resource"; | |
| 1042 if (initiatorTypeName == FetchInitiatorTypeNames::link) | |
| 1043 return "Link element resource"; | |
| 1044 if (initiatorTypeName == FetchInitiatorTypeNames::processinginstruction) | |
| 1045 return "Processing instruction"; | |
| 1046 if (initiatorTypeName == FetchInitiatorTypeNames::texttrack) | |
| 1047 return "Text track"; | |
| 1048 if (initiatorTypeName == FetchInitiatorTypeNames::xml) | |
| 1049 return "XML resource"; | |
| 1050 if (initiatorTypeName == FetchInitiatorTypeNames::xmlhttprequest) | |
| 1051 return "XMLHttpRequest"; | |
| 1052 | |
| 1053 static_assert( | |
| 1054 FetchInitiatorTypeNames::FetchInitiatorTypeNamesCount == 12, | |
| 1055 "New FetchInitiatorTypeNames should be handled correctly here."); | |
| 1056 | |
| 1057 return "Resource"; | |
| 1058 } | |
| 1059 | |
| 1060 const char* Resource::resourceTypeToString( | |
| 1061 Type type, | |
| 1062 const AtomicString& fetchInitiatorName) { | |
| 1063 switch (type) { | |
| 1064 case Resource::MainResource: | |
| 1065 return "Main resource"; | |
| 1066 case Resource::Image: | |
| 1067 return "Image"; | |
| 1068 case Resource::CSSStyleSheet: | |
| 1069 return "CSS stylesheet"; | |
| 1070 case Resource::Script: | |
| 1071 return "Script"; | |
| 1072 case Resource::Font: | |
| 1073 return "Font"; | |
| 1074 case Resource::Raw: | |
| 1075 return initiatorTypeNameToString(fetchInitiatorName); | |
| 1076 case Resource::SVGDocument: | |
| 1077 return "SVG document"; | |
| 1078 case Resource::XSLStyleSheet: | |
| 1079 return "XSL stylesheet"; | |
| 1080 case Resource::LinkPrefetch: | |
| 1081 return "Link prefetch resource"; | |
| 1082 case Resource::TextTrack: | |
| 1083 return "Text track"; | |
| 1084 case Resource::ImportResource: | |
| 1085 return "Imported resource"; | |
| 1086 case Resource::Media: | |
| 1087 return "Media"; | |
| 1088 case Resource::Manifest: | |
| 1089 return "Manifest"; | |
| 1090 case Resource::Mock: | |
| 1091 return "Mock"; | |
| 1092 } | |
| 1093 NOTREACHED(); | |
| 1094 return initiatorTypeNameToString(fetchInitiatorName); | |
| 1095 } | |
| 1096 | |
| 1097 bool Resource::shouldBlockLoadEvent() const { | |
| 1098 return !m_linkPreload && isLoadEventBlockingResourceType(); | |
| 1099 } | |
| 1100 | |
| 1101 bool Resource::isLoadEventBlockingResourceType() const { | |
| 1102 switch (m_type) { | |
| 1103 case Resource::MainResource: | |
| 1104 case Resource::Image: | |
| 1105 case Resource::CSSStyleSheet: | |
| 1106 case Resource::Script: | |
| 1107 case Resource::Font: | |
| 1108 case Resource::SVGDocument: | |
| 1109 case Resource::XSLStyleSheet: | |
| 1110 case Resource::ImportResource: | |
| 1111 return true; | |
| 1112 case Resource::Raw: | |
| 1113 case Resource::LinkPrefetch: | |
| 1114 case Resource::TextTrack: | |
| 1115 case Resource::Media: | |
| 1116 case Resource::Manifest: | |
| 1117 case Resource::Mock: | |
| 1118 return false; | |
| 1119 } | |
| 1120 NOTREACHED(); | |
| 1121 return false; | |
| 1122 } | |
| 1123 | |
| 1124 } // namespace blink | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2584423002:
Loading: move core/fetch to platform/loader/fetch (Closed)
