The Tor Browser: gfx/src/gfxCrashReporterUtils.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 gfxCrashReporterUtils_h__

     7 #define gfxCrashReporterUtils_h__

     9 #include "gfxCore.h"

    11 namespace mozilla {

    13 /** \class ScopedGfxFeatureReporter

    14   *

    15   * On creation, adds "FeatureName?" to AppNotes

    16   * On destruction, adds "FeatureName-", or "FeatureName+" if you called SetSuccessful().

    17   *

    18   * Any such string is added at most once to AppNotes, and is subsequently skipped.

    19   *

    20   * This ScopedGfxFeatureReporter class is designed to be fool-proof to use in functions that

    21   * have many exit points. We don't want to encourage having function with many exit points.

    22   * It just happens that our graphics features initialization functions are like that.

    23   */

    24 class NS_GFX ScopedGfxFeatureReporter

    25 {

    26 public:

    27   ScopedGfxFeatureReporter(const char *aFeature, bool force = false)

    28     : mFeature(aFeature), mStatusChar('-')

    29   {

    30     WriteAppNote(force ? '!' : '?');

    31   }

    32   ~ScopedGfxFeatureReporter() {

    33     WriteAppNote(mStatusChar);

    34   }

    35   void SetSuccessful() { mStatusChar = '+'; }

    37   class AppNoteWritingRunnable;

    39 protected:

    40   const char *mFeature;

    41   char mStatusChar;

    43 private:

    44   void WriteAppNote(char statusChar);

    45 };

    47 } // end namespace mozilla

    49 #endif // gfxCrashReporterUtils_h__

The Tor Browser / file revision

gfx/src/gfxCrashReporterUtils.h@97036ab72558

gfx/src/gfxCrashReporterUtils.h