The Tor Browser: gfx/src/nsThebesGfxFactory.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: 20; 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 "gfxPlatform.h"                // for gfxPlatform

     7 #include "mozilla/Assertions.h"         // for MOZ_ASSERT_HELPER2

     8 #include "mozilla/Attributes.h"         // for MOZ_FINAL

     9 #include "mozilla/Module.h"             // for Module, Module::CIDEntry, etc

    10 #include "mozilla/ModuleUtils.h"

    11 #include "mozilla/mozalloc.h"           // for operator new

    12 #include "nsCOMPtr.h"                   // for nsCOMPtr

    13 #include "nsError.h"                    // for NS_ERROR_NO_AGGREGATION, etc

    14 #include "nsGfxCIID.h"                  // for NS_FONT_ENUMERATOR_CID, etc

    15 #include "nsID.h"                       // for NS_DEFINE_NAMED_CID, etc

    16 #include "nsIScriptableRegion.h"        // for nsIScriptableRegion

    17 #include "nsISupports.h"                // for NS_DECL_ISUPPORTS, etc

    18 #include "nsScriptableRegion.h"         // for nsScriptableRegion

    19 #include "nsThebesFontEnumerator.h"     // for nsThebesFontEnumerator

    21 NS_GENERIC_FACTORY_CONSTRUCTOR(nsThebesFontEnumerator)

    23 static nsresult

    24 nsScriptableRegionConstructor(nsISupports *aOuter, REFNSIID aIID, void **aResult)

    25 {

    26   if (!aResult) {

    27     return NS_ERROR_NULL_POINTER;

    28   }

    29   *aResult = nullptr;

    30   if (aOuter) {

    31     return NS_ERROR_NO_AGGREGATION;

    32   }

    34   nsCOMPtr<nsIScriptableRegion> scriptableRgn = new nsScriptableRegion();

    35   return scriptableRgn->QueryInterface(aIID, aResult);

    36 }

    38 NS_DEFINE_NAMED_CID(NS_FONT_ENUMERATOR_CID);

    39 NS_DEFINE_NAMED_CID(NS_SCRIPTABLE_REGION_CID);

    41 static const mozilla::Module::CIDEntry kThebesCIDs[] = {

    42     { &kNS_FONT_ENUMERATOR_CID, false, nullptr, nsThebesFontEnumeratorConstructor },

    43     { &kNS_SCRIPTABLE_REGION_CID, false, nullptr, nsScriptableRegionConstructor },

    44     { nullptr }

    45 };

    47 static const mozilla::Module::ContractIDEntry kThebesContracts[] = {

    48     { "@mozilla.org/gfx/fontenumerator;1", &kNS_FONT_ENUMERATOR_CID },

    49     { "@mozilla.org/gfx/region;1", &kNS_SCRIPTABLE_REGION_CID },

    50     { nullptr }

    51 };

    53 static const mozilla::Module kThebesModule = {

    54     mozilla::Module::kVersion,

    55     kThebesCIDs,

    56     kThebesContracts,

    57     nullptr,

    58     nullptr,

    59     nullptr,

    60     nullptr

    61 };

    63 NSMODULE_DEFN(nsGfxModule) = &kThebesModule;

The Tor Browser / file revision

gfx/src/nsThebesGfxFactory.cpp@97036ab72558

gfx/src/nsThebesGfxFactory.cpp