chrome/browser/diagnostics/diagnostics_controller.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_DIAGNOSTICS_DIAGNOSTICS_CONTROLLER_H_
   6 #define CHROME_BROWSER_DIAGNOSTICS_DIAGNOSTICS_CONTROLLER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/memory/singleton.h"
  10
  11 class CommandLine;
  12
  13 namespace diagnostics {
  14
  15 class DiagnosticsWriter;
  16 class DiagnosticsModel;
  17
  18 class DiagnosticsController {
  19  public:
  20   static DiagnosticsController* GetInstance();
  21
  22   // Entry point for the diagnostics mode. Returns zero if able to run
  23   // diagnostics successfully, regardless of the results of the diagnostics.
  24   int Run(const CommandLine& command_line, DiagnosticsWriter* writer);
  25
  26   // Entry point for running recovery based on diagnostics that have already
  27   // been run. In order for this to do anything, Run() must be executed first.
  28   int RunRecovery(const CommandLine& command_line, DiagnosticsWriter* writer);
  29
  30   // Returns a model with the results that have accumulated. They can then be
  31   // queried for their attributes for human consumption later.
  32   const DiagnosticsModel& GetResults() const;
  33
  34   // Returns true if there are any results available.
  35   bool HasResults();
  36
  37   // Clears any results that have accumulated. After calling this, do not call
  38   // GetResults until after Run is called again.
  39   void ClearResults();
  40
  41   // Records UMA statistics indicating that a regular Chrome startup happened,
  42   // with no diagnostics or recovery being run.  This is necessary to provide a
  43   // denominator for the diagnostics metrics.
  44   void RecordRegularStartup();
  45
  46  private:
  47   friend struct DefaultSingletonTraits<DiagnosticsController>;
  48
  49   DiagnosticsController();
  50   ~DiagnosticsController();
  51
  52   scoped_ptr<DiagnosticsModel> model_;
  53   DiagnosticsWriter* writer_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(DiagnosticsController);
  56 };
  57
  58 }  // namespace diagnostics
  59
  60 #endif  // CHROME_BROWSER_DIAGNOSTICS_DIAGNOSTICS_CONTROLLER_H_