The Tor Browser: netwerk/base/src/nsDNSPrefetch.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nsDNSPrefetch_h___

     7 #define nsDNSPrefetch_h___

     9 #include "nsWeakReference.h"

    10 #include "nsString.h"

    11 #include "mozilla/TimeStamp.h"

    12 #include "mozilla/Attributes.h"

    14 #include "nsIDNSListener.h"

    16 class nsIURI;

    17 class nsIDNSService;

    19 class nsDNSPrefetch MOZ_FINAL : public nsIDNSListener

    20 {

    21 public:

    22     NS_DECL_THREADSAFE_ISUPPORTS

    23     NS_DECL_NSIDNSLISTENER

    25     nsDNSPrefetch(nsIURI *aURI, nsIDNSListener *aListener, bool storeTiming);

    26     bool TimingsValid() const {

    27         return !mStartTimestamp.IsNull() && !mEndTimestamp.IsNull();

    28     }

    29     // Only use the two timings if TimingsValid() returns true

    30     const mozilla::TimeStamp& StartTimestamp() const { return mStartTimestamp; }

    31     const mozilla::TimeStamp& EndTimestamp() const { return mEndTimestamp; }

    33     static nsresult Initialize(nsIDNSService *aDNSService);

    34     static nsresult Shutdown();

    36     // Call one of the following methods to start the Prefetch.

    37     nsresult PrefetchHigh(bool refreshDNS = false);

    38     nsresult PrefetchMedium(bool refreshDNS = false);

    39     nsresult PrefetchLow(bool refreshDNS = false);

    41 private:

    42     nsCString mHostname;

    43     bool mStoreTiming;

    44     mozilla::TimeStamp mStartTimestamp;

    45     mozilla::TimeStamp mEndTimestamp;

    46     nsWeakPtr mListener;

    48     nsresult Prefetch(uint16_t flags);

    49 };

    51 #endif

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