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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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121
uriloader/prefetch/nsPrefetchService.h Normal file
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsPrefetchService_h__
#define nsPrefetchService_h__
#include "nsCPrefetchService.h"
#include "nsIObserver.h"
#include "nsIInterfaceRequestor.h"
#include "nsIChannelEventSink.h"
#include "nsIRedirectResultListener.h"
#include "nsIWebProgressListener.h"
#include "nsIStreamListener.h"
#include "nsIChannel.h"
#include "nsIURI.h"
#include "nsWeakReference.h"
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "mozilla/Attributes.h"
#include <deque>
class nsPrefetchService;
class nsPrefetchNode;
//-----------------------------------------------------------------------------
// nsPrefetchService
//-----------------------------------------------------------------------------
class nsPrefetchService final : public nsIPrefetchService
, public nsIWebProgressListener
, public nsIObserver
, public nsSupportsWeakReference
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIPREFETCHSERVICE
NS_DECL_NSIWEBPROGRESSLISTENER
NS_DECL_NSIOBSERVER
nsPrefetchService();
nsresult Init();
void ProcessNextURI(nsPrefetchNode *aFinished);
void NotifyLoadRequested(nsPrefetchNode *node);
void NotifyLoadCompleted(nsPrefetchNode *node);
void DispatchEvent(nsPrefetchNode *node, bool aSuccess);
private:
~nsPrefetchService();
nsresult Prefetch(nsIURI *aURI,
nsIURI *aReferrerURI,
nsIDOMNode *aSource,
bool aExplicit);
void AddProgressListener();
void RemoveProgressListener();
nsresult EnqueueURI(nsIURI *aURI, nsIURI *aReferrerURI,
nsIDOMNode *aSource, nsPrefetchNode **node);
void EmptyQueue();
void StartPrefetching();
void StopPrefetching();
std::deque<RefPtr<nsPrefetchNode>> mQueue;
nsTArray<RefPtr<nsPrefetchNode>> mCurrentNodes;
int32_t mMaxParallelism;
int32_t mStopCount;
// true if pending document loads have ever reached zero.
int32_t mHaveProcessed;
bool mDisabled;
// In usual case prefetch does not start until all normal loads are done.
// Aggressive mode ignores normal loads and just start prefetch ASAP.
// It's mainly for testing purpose and discoraged for normal use;
// see https://bugzilla.mozilla.org/show_bug.cgi?id=1281415 for details.
bool mAggressive;
};
//-----------------------------------------------------------------------------
// nsPrefetchNode
//-----------------------------------------------------------------------------
class nsPrefetchNode final : public nsIStreamListener
, public nsIInterfaceRequestor
, public nsIChannelEventSink
, public nsIRedirectResultListener
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSICHANNELEVENTSINK
NS_DECL_NSIREDIRECTRESULTLISTENER
nsPrefetchNode(nsPrefetchService *aPrefetchService,
nsIURI *aURI,
nsIURI *aReferrerURI,
nsIDOMNode *aSource);
nsresult OpenChannel();
nsresult CancelChannel(nsresult error);
nsCOMPtr<nsIURI> mURI;
nsCOMPtr<nsIURI> mReferrerURI;
nsTArray<nsCOMPtr<nsIWeakReference>> mSources;
private:
~nsPrefetchNode() {}
RefPtr<nsPrefetchService> mService;
nsCOMPtr<nsIChannel> mChannel;
nsCOMPtr<nsIChannel> mRedirectChannel;
int64_t mBytesRead;
bool mShouldFireLoadEvent;
};
#endif // !nsPrefetchService_h__