gecko-dev/netwerk/base/nsDNSPrefetch.h
Tim Huang 2d4b6a79e2 Bug 1337893 - Part 3: Updating Necko for DNS changes. r=valentin
MozReview-Commit-ID: AVEp3hP7XqB

--HG--
extra : rebase_source : ab7bccfc0336a92f837c16eacbf3ae9290f3803b
2017-02-15 17:48:15 +08:00

57 lines
1.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 nsDNSPrefetch_h___
#define nsDNSPrefetch_h___
#include "nsWeakReference.h"
#include "nsString.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/Attributes.h"
#include "mozilla/BasePrincipal.h"
#include "nsIDNSListener.h"
class nsIURI;
class nsIDNSService;
class nsDNSPrefetch final : public nsIDNSListener
{
~nsDNSPrefetch() {}
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIDNSLISTENER
nsDNSPrefetch(nsIURI *aURI, mozilla::OriginAttributes& aOriginAttributes,
nsIDNSListener *aListener, bool storeTiming);
bool TimingsValid() const {
return !mStartTimestamp.IsNull() && !mEndTimestamp.IsNull();
}
// Only use the two timings if TimingsValid() returns true
const mozilla::TimeStamp& StartTimestamp() const { return mStartTimestamp; }
const mozilla::TimeStamp& EndTimestamp() const { return mEndTimestamp; }
static nsresult Initialize(nsIDNSService *aDNSService);
static nsresult Shutdown();
// Call one of the following methods to start the Prefetch.
nsresult PrefetchHigh(bool refreshDNS = false);
nsresult PrefetchMedium(bool refreshDNS = false);
nsresult PrefetchLow(bool refreshDNS = false);
private:
nsCString mHostname;
mozilla::OriginAttributes mOriginAttributes;
bool mStoreTiming;
mozilla::TimeStamp mStartTimestamp;
mozilla::TimeStamp mEndTimestamp;
nsWeakPtr mListener;
nsresult Prefetch(uint16_t flags);
};
#endif