The Tor Browser: xpfe/components/windowds/nsWindowDataSource.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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 #include "nsIRDFDataSource.h"

     7 #include "nsIWindowMediatorListener.h"

     8 #include "nsIWindowDataSource.h"

     9 #include "nsIObserver.h"

    11 #include "nsHashKeys.h"

    12 #include "nsIRDFService.h"

    13 #include "nsIRDFContainer.h"

    14 #include "nsInterfaceHashtable.h"

    15 #include "nsCycleCollectionParticipant.h"

    17 // {C744CA3D-840B-460a-8D70-7CE63C51C958}

    18 #define NS_WINDOWDATASOURCE_CID \

    19 { 0xc744ca3d, 0x840b, 0x460a, \

    20  { 0x8d, 0x70, 0x7c, 0xe6, 0x3c, 0x51, 0xc9, 0x58 } }

    23 class nsWindowDataSource : public nsIRDFDataSource,

    24                            public nsIObserver,

    25                            public nsIWindowMediatorListener,

    26                            public nsIWindowDataSource

    27 {

    28  public:

    29     nsWindowDataSource() { }

    30     virtual ~nsWindowDataSource();

    32     nsresult Init();

    34     NS_DECL_CYCLE_COLLECTING_ISUPPORTS

    35     NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsWindowDataSource,

    36                                              nsIRDFDataSource)

    37     NS_DECL_NSIOBSERVER

    38     NS_DECL_NSIWINDOWMEDIATORLISTENER

    39     NS_DECL_NSIWINDOWDATASOURCE

    40     NS_DECL_NSIRDFDATASOURCE

    42  private:

    44     // mapping of window -> RDF resource

    45     nsInterfaceHashtable<nsPtrHashKey<nsIXULWindow>, nsIRDFResource> mWindowResources;

    47     static uint32_t windowCount;

    48     static uint32_t gRefCnt;

    50     nsCOMPtr<nsIRDFDataSource> mInner;

    51     nsCOMPtr<nsIRDFContainer> mContainer;

    53     static nsIRDFResource* kNC_Name;

    54     static nsIRDFResource* kNC_KeyIndex;

    55     static nsIRDFResource* kNC_WindowRoot;

    56     static nsIRDFService* gRDFService;

    57 };

The Tor Browser / file revision

xpfe/components/windowds/nsWindowDataSource.h@97036ab72558

xpfe/components/windowds/nsWindowDataSource.h