The Tor Browser: gfx/thebes/gfxTeeSurface.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 "gfxTeeSurface.h"

     7 #include "nsAutoPtr.h"

     8 #include "nsTArray.h"

    10 #include "cairo-tee.h"

    12 gfxTeeSurface::gfxTeeSurface(cairo_surface_t *csurf)

    13 {

    14     Init(csurf, true);

    15 }

    17 gfxTeeSurface::gfxTeeSurface(gfxASurface **aSurfaces, int32_t aSurfaceCount)

    18 {

    19     NS_ASSERTION(aSurfaceCount > 0, "Must have a least one surface");

    20     cairo_surface_t *csurf = cairo_tee_surface_create(aSurfaces[0]->CairoSurface());

    21     Init(csurf, false);

    23     for (int32_t i = 1; i < aSurfaceCount; ++i) {

    24         cairo_tee_surface_add(csurf, aSurfaces[i]->CairoSurface());

    25     }

    26 }

    28 const gfxIntSize

    29 gfxTeeSurface::GetSize() const

    30 {

    31     nsRefPtr<gfxASurface> master = Wrap(cairo_tee_surface_index(mSurface, 0));

    32     return master->GetSize();

    33 }

    35 void

    36 gfxTeeSurface::GetSurfaces(nsTArray<nsRefPtr<gfxASurface> >* aSurfaces)

    37 {

    38     for (int32_t i = 0; ; ++i) {

    39         cairo_surface_t *csurf = cairo_tee_surface_index(mSurface, i);

    40         if (cairo_surface_status(csurf))

    41             break;

    42         nsRefPtr<gfxASurface> *elem = aSurfaces->AppendElement();

    43         if (!elem)

    44             return;

    45         *elem = Wrap(csurf);

    46     }

    47 }

The Tor Browser / file revision

gfx/thebes/gfxTeeSurface.cpp@97036ab72558

gfx/thebes/gfxTeeSurface.cpp