headers/os/storage/VolumeRoster.h

   1 /*
   2  * Copyright 2002-2010, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _VOLUME_ROSTER_H
   6 #define _VOLUME_ROSTER_H
   7
   8
   9 #include <Application.h>
  10 #include <SupportDefs.h>
  11 #include <Volume.h>
  12
  13
  14 class BVolume;
  15 class BMessenger;
  16
  17
  18 class BVolumeRoster {
  19 public:
  20                                                                 BVolumeRoster();
  21         virtual                                         ~BVolumeRoster();
  22
  23                         status_t                        GetNextVolume(BVolume* volume);
  24                         void                            Rewind();
  25
  26                         status_t                        GetBootVolume(BVolume* volume);
  27
  28                         status_t                        StartWatching(
  29                                                                         BMessenger messenger = be_app_messenger);
  30                         void                            StopWatching();
  31                         BMessenger                      Messenger() const;
  32
  33 private:
  34         virtual void                            _SeveredVRoster1();
  35         virtual void                            _SeveredVRoster2();
  36
  37 private:
  38                         int32                           fCookie;
  39                                                                         // The iteration cookie for next_dev()
  40                                                                         // Initialized to 0
  41                         BMessenger*                     fTarget;
  42                                                                         // BMessenger referring to the target to
  43                                                                         // which the watching notification
  44                                                                         // messages are sent. The object is
  45                                                                         // allocated and owned by the roster,
  46                                                                         // or NULL if not watching.
  47                         uint32                          _reserved[3];
  48                                                                         // FBC
  49 };
  50
  51
  52 #endif  // _VOLUME_ROSTER_H