The Tor Browser: editor/txmgr/src/nsTransactionItem.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: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     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 nsTransactionItem_h__

     7 #define nsTransactionItem_h__

     9 #include "nsCOMPtr.h"

    10 #include "nsCOMArray.h"

    11 #include "nsCycleCollectionParticipant.h"

    12 #include "nsISupportsImpl.h"

    13 #include "nscore.h"

    15 class nsITransaction;

    16 class nsTransactionManager;

    17 class nsTransactionStack;

    19 class nsTransactionItem

    20 {

    21   nsCOMArray<nsISupports>  mData;

    22   nsCOMPtr<nsITransaction> mTransaction;

    23   nsTransactionStack      *mUndoStack;

    24   nsTransactionStack      *mRedoStack;

    26 public:

    28   nsTransactionItem(nsITransaction *aTransaction);

    29   virtual ~nsTransactionItem();

    30   NS_METHOD_(MozExternalRefCountType) AddRef();

    31   NS_METHOD_(MozExternalRefCountType) Release();

    33   NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(nsTransactionItem)

    35   virtual nsresult AddChild(nsTransactionItem *aTransactionItem);

    36   already_AddRefed<nsITransaction> GetTransaction();

    37   virtual nsresult GetIsBatch(bool *aIsBatch);

    38   virtual nsresult GetNumberOfChildren(int32_t *aNumChildren);

    39   virtual nsresult GetChild(int32_t aIndex, nsTransactionItem **aChild);

    41   virtual nsresult DoTransaction(void);

    42   virtual nsresult UndoTransaction(nsTransactionManager *aTxMgr);

    43   virtual nsresult RedoTransaction(nsTransactionManager *aTxMgr);

    45   nsCOMArray<nsISupports>& GetData()

    46   {

    47     return mData;

    48   }

    50 private:

    52   virtual nsresult UndoChildren(nsTransactionManager *aTxMgr);

    53   virtual nsresult RedoChildren(nsTransactionManager *aTxMgr);

    55   virtual nsresult RecoverFromUndoError(nsTransactionManager *aTxMgr);

    56   virtual nsresult RecoverFromRedoError(nsTransactionManager *aTxMgr);

    58   virtual nsresult GetNumberOfUndoItems(int32_t *aNumItems);

    59   virtual nsresult GetNumberOfRedoItems(int32_t *aNumItems);

    61   void CleanUp();

    62 protected:

    63   nsCycleCollectingAutoRefCnt mRefCnt;

    64   NS_DECL_OWNINGTHREAD

    65 };

    67 #endif // nsTransactionItem_h__

The Tor Browser / file revision

editor/txmgr/src/nsTransactionItem.h@97036ab72558

editor/txmgr/src/nsTransactionItem.h