LCOV - code coverage report
Current view: directory - netwerk/base/src - nsDNSPrefetch.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 32 24 75.0 %
Date: 2012-06-02 Functions: 11 9 81.8 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Mozilla Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2008
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Patrick McManus <mcmanus@ducksong.com>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsDNSPrefetch.h"
      40                 : #include "nsCOMPtr.h"
      41                 : #include "nsString.h"
      42                 : 
      43                 : #include "nsNetUtil.h"
      44                 : 
      45                 : #include "nsIDNSListener.h"
      46                 : #include "nsIDNSRecord.h"
      47                 : #include "nsIDNSService.h"
      48                 : #include "nsICancelable.h"
      49                 : 
      50                 : static NS_DEFINE_CID(kDNSServiceCID, NS_DNSSERVICE_CID);
      51                 : static nsIDNSService *sDNSService = nsnull;
      52                 : 
      53                 : nsresult
      54            2863 : nsDNSPrefetch::Initialize(nsIDNSService *aDNSService)
      55                 : {
      56            2863 :     NS_IF_RELEASE(sDNSService);
      57            2863 :     sDNSService =  aDNSService;
      58            2863 :     NS_IF_ADDREF(sDNSService);
      59            2863 :     return NS_OK;
      60                 : }
      61                 : 
      62                 : nsresult
      63            1419 : nsDNSPrefetch::Shutdown()
      64                 : {
      65            1419 :     NS_IF_RELEASE(sDNSService);
      66            1419 :     return NS_OK;
      67                 : }
      68                 : 
      69            3471 : nsDNSPrefetch::nsDNSPrefetch(nsIURI *aURI, bool storeTiming)
      70            3471 :     : mStoreTiming(storeTiming)
      71                 : {
      72            3471 :     aURI->GetAsciiHost(mHostname);
      73            3471 : }
      74                 : 
      75                 : nsresult 
      76            3471 : nsDNSPrefetch::Prefetch(PRUint16 flags)
      77                 : {
      78            3471 :     if (mHostname.IsEmpty())
      79               0 :         return NS_ERROR_NOT_AVAILABLE;
      80                 :   
      81            3471 :     if (!sDNSService)
      82               0 :         return NS_ERROR_NOT_AVAILABLE;
      83                 :     
      84            6942 :     nsCOMPtr<nsICancelable> tmpOutstanding;  
      85                 : 
      86            3471 :     if (mStoreTiming)
      87               0 :         mStartTimestamp = mozilla::TimeStamp::Now();
      88                 :     // If AsyncResolve fails, for example because prefetching is disabled,
      89                 :     // then our timing will be useless. However, in such a case,
      90                 :     // mEndTimestamp will be a null timestamp and callers should check
      91                 :     // TimingsValid() before using the timing.
      92                 :     return sDNSService->AsyncResolve(mHostname, flags | nsIDNSService::RESOLVE_SPECULATE,
      93            3471 :                                      this, nsnull, getter_AddRefs(tmpOutstanding));
      94                 : }
      95                 : 
      96                 : nsresult
      97               0 : nsDNSPrefetch::PrefetchLow()
      98                 : {
      99               0 :     return Prefetch(nsIDNSService::RESOLVE_PRIORITY_LOW);
     100                 : }
     101                 : 
     102                 : nsresult
     103               0 : nsDNSPrefetch::PrefetchMedium()
     104                 : {
     105               0 :     return Prefetch(nsIDNSService::RESOLVE_PRIORITY_MEDIUM);
     106                 : }
     107                 : 
     108                 : nsresult
     109            3471 : nsDNSPrefetch::PrefetchHigh()
     110                 : {
     111            3471 :     return Prefetch(0);
     112                 : }
     113                 : 
     114                 : 
     115           27205 : NS_IMPL_THREADSAFE_ISUPPORTS1(nsDNSPrefetch, nsIDNSListener)
     116                 : 
     117                 : NS_IMETHODIMP
     118            3468 : nsDNSPrefetch::OnLookupComplete(nsICancelable *request,
     119                 :                                 nsIDNSRecord  *rec,
     120                 :                                 nsresult       status)
     121                 : {
     122            3468 :     if (mStoreTiming)
     123               0 :         mEndTimestamp = mozilla::TimeStamp::Now();
     124            3468 :     return NS_OK;
     125                 : }

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