mirror of
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131 lines
4.3 KiB
C++
131 lines
4.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsPrefetchService_h__
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#define nsPrefetchService_h__
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#include "nsIObserver.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIChannelEventSink.h"
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#include "nsIPrefetchService.h"
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#include "nsIRedirectResultListener.h"
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#include "nsIWebProgressListener.h"
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#include "nsIStreamListener.h"
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#include "nsIChannel.h"
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#include "nsIURI.h"
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#include "nsWeakReference.h"
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#include "nsCOMPtr.h"
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#include "mozilla/Attributes.h"
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#include <deque>
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class nsPrefetchService;
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class nsPrefetchNode;
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class nsIReferrerInfo;
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//-----------------------------------------------------------------------------
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// nsPrefetchService
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//-----------------------------------------------------------------------------
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class nsPrefetchService final : public nsIPrefetchService,
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public nsIWebProgressListener,
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public nsIObserver,
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public nsSupportsWeakReference {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIPREFETCHSERVICE
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NS_DECL_NSIWEBPROGRESSLISTENER
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NS_DECL_NSIOBSERVER
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nsPrefetchService();
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nsresult Init();
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void RemoveNodeAndMaybeStartNextPrefetchURI(nsPrefetchNode* aFinished);
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void ProcessNextPrefetchURI();
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void NotifyLoadRequested(nsPrefetchNode* node);
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void NotifyLoadCompleted(nsPrefetchNode* node);
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void DispatchEvent(nsPrefetchNode* node, bool aSuccess);
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private:
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~nsPrefetchService();
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nsresult Prefetch(nsIURI* aURI, nsIReferrerInfo* aReferrerInfo,
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nsINode* aSource, bool aExplicit);
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nsresult Preload(nsIURI* aURI, nsIReferrerInfo* aReferrerInfo,
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nsINode* aSource, nsContentPolicyType aPolicyType);
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void AddProgressListener();
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void RemoveProgressListener();
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nsresult EnqueueURI(nsIURI* aURI, nsIReferrerInfo* aReferrerInfo,
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nsINode* aSource, nsPrefetchNode** node);
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void EmptyPrefetchQueue();
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void StartPrefetching();
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void StopPrefetching();
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void StopCurrentPrefetchsPreloads(bool aPreload);
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void StopAll();
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nsresult CheckURIScheme(nsIURI* aURI, nsIReferrerInfo* aReferrerInfo);
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std::deque<RefPtr<nsPrefetchNode>> mPrefetchQueue;
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nsTArray<RefPtr<nsPrefetchNode>> mCurrentNodes;
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int32_t mMaxParallelism;
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int32_t mStopCount;
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bool mHaveProcessed;
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bool mPrefetchDisabled;
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// In usual case prefetch does not start until all normal loads are done.
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// Aggressive mode ignores normal loads and just start prefetch ASAP.
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// It's mainly for testing purpose and discoraged for normal use;
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// see https://bugzilla.mozilla.org/show_bug.cgi?id=1281415 for details.
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bool mAggressive;
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};
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//-----------------------------------------------------------------------------
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// nsPreFetchingNode
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//-----------------------------------------------------------------------------
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class nsPrefetchNode final : public nsIStreamListener,
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public nsIInterfaceRequestor,
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public nsIChannelEventSink,
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public nsIRedirectResultListener {
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSIINTERFACEREQUESTOR
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NS_DECL_NSICHANNELEVENTSINK
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NS_DECL_NSIREDIRECTRESULTLISTENER
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nsPrefetchNode(nsPrefetchService* aPrefetchService, nsIURI* aURI,
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nsIReferrerInfo* aReferrerInfo, nsINode* aSource,
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nsContentPolicyType aPolicyType, bool aPreload);
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nsresult OpenChannel();
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nsresult CancelChannel(nsresult error);
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nsCOMPtr<nsIURI> mURI;
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nsCOMPtr<nsIReferrerInfo> mReferrerInfo;
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nsTArray<nsWeakPtr> mSources;
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// The policy type to be used for fetching the resource.
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nsContentPolicyType mPolicyType;
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// nsPrefetchNode is used for prefetching and preloading resource.
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// mPreload is true if a resource is preloaded. Preloads and
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// prefetches are fetched in different phases (during load and
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// after a page load), therefore we need to distinguish them.
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bool mPreload;
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private:
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~nsPrefetchNode() {}
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RefPtr<nsPrefetchService> mService;
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nsCOMPtr<nsIChannel> mChannel;
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nsCOMPtr<nsIChannel> mRedirectChannel;
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int64_t mBytesRead;
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bool mShouldFireLoadEvent;
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};
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#endif // !nsPrefetchService_h__
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