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2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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6 : * 1.1 (the "License"); you may not use this file except in compliance with
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19 : * Portions created by the Initial Developer are Copyright (C) 2008
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22 : * Contributor(s):
23 : * Patrick McManus <mcmanus@ducksong.com>
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38 :
39 : #ifndef nsDNSPrefetch_h___
40 : #define nsDNSPrefetch_h___
41 :
42 : #include "nsCOMPtr.h"
43 : #include "nsString.h"
44 : #include "mozilla/TimeStamp.h"
45 :
46 : #include "nsIDNSListener.h"
47 :
48 : class nsIURI;
49 : class nsIDNSService;
50 :
51 : class nsDNSPrefetch : public nsIDNSListener
52 3197 : {
53 : public:
54 : NS_DECL_ISUPPORTS
55 : NS_DECL_NSIDNSLISTENER
56 :
57 : nsDNSPrefetch(nsIURI *aURI, bool storeTiming);
58 2942 : bool TimingsValid() const {
59 2942 : return !mStartTimestamp.IsNull() && !mEndTimestamp.IsNull();
60 : }
61 : // Only use the two timings if TimingsValid() returns true
62 0 : const mozilla::TimeStamp& StartTimestamp() const { return mStartTimestamp; }
63 0 : const mozilla::TimeStamp& EndTimestamp() const { return mEndTimestamp; }
64 :
65 : static nsresult Initialize(nsIDNSService *aDNSService);
66 : static nsresult Shutdown();
67 :
68 : // Call one of the following methods to start the Prefetch.
69 : nsresult PrefetchHigh();
70 : nsresult PrefetchMedium();
71 : nsresult PrefetchLow();
72 :
73 : private:
74 : nsCString mHostname;
75 : bool mStoreTiming;
76 : mozilla::TimeStamp mStartTimestamp;
77 : mozilla::TimeStamp mEndTimestamp;
78 :
79 : nsresult Prefetch(PRUint16 flags);
80 : };
81 :
82 : #endif
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