The Tor Browser: xpcom/glue/nsMemory.cpp@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 "nsXPCOM.h"

     7 #include "nsMemory.h"

     8 #include "nsIMemory.h"

     9 #include "nsXPCOMPrivate.h"

    10 #include "nsDebug.h"

    11 #include "nsISupportsUtils.h"

    12 #include "nsCOMPtr.h"

    14 ////////////////////////////////////////////////////////////////////////////////

    15 // nsMemory static helper routines

    17 NS_COM_GLUE nsresult

    18 nsMemory::HeapMinimize(bool aImmediate)

    19 {

    20     nsCOMPtr<nsIMemory> mem;

    21     nsresult rv = NS_GetMemoryManager(getter_AddRefs(mem));

    22     if (NS_WARN_IF(NS_FAILED(rv)))

    23         return rv;

    25     return mem->HeapMinimize(aImmediate);

    26 }

    28 NS_COM_GLUE void*

    29 nsMemory::Clone(const void* ptr, size_t size)

    30 {

    31     void* newPtr = NS_Alloc(size);

    32     if (newPtr)

    33         memcpy(newPtr, ptr, size);

    34     return newPtr;

    35 }

    37 NS_COM_GLUE nsIMemory*

    38 nsMemory::GetGlobalMemoryService()

    39 {

    40     nsIMemory* mem;

    41     nsresult rv = NS_GetMemoryManager(&mem);

    42     if (NS_FAILED(rv)) return nullptr;

    44     return mem;

    45 }

    47 //----------------------------------------------------------------------

The Tor Browser / file revision

xpcom/glue/nsMemory.cpp@97036ab72558

xpcom/glue/nsMemory.cpp