The Tor Browser: gfx/gl/VBOArena.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 "VBOArena.h"

     7 #include "GLContext.h"

     9 using namespace mozilla::gl;

    11 GLuint VBOArena::Allocate(GLContext *aGLContext)

    12 {

    13     if (!mAvailableVBOs.size()) {

    14         GLuint vbo;

    15         aGLContext->fGenBuffers(1, &vbo);

    16         mAllocatedVBOs.push_back(vbo);

    17         return vbo;

    18     }

    19     GLuint vbo = mAvailableVBOs.back();

    20     mAvailableVBOs.pop_back();

    21     return vbo;

    22 }

    24 void VBOArena::Reset()

    25 {

    26     mAvailableVBOs = mAllocatedVBOs;

    27 }

    29 void VBOArena::Flush(GLContext *aGLContext)

    30 {

    31     if (mAvailableVBOs.size()) {

    32 #ifdef DEBUG

    33         printf_stderr("VBOArena::Flush for %u VBOs\n", mAvailableVBOs.size());

    34 #endif

    35         aGLContext->fDeleteBuffers(mAvailableVBOs.size(), &mAvailableVBOs[0]);

    36     }

    37 }

The Tor Browser / file revision

gfx/gl/VBOArena.cpp@97036ab72558

gfx/gl/VBOArena.cpp