chromeos/disks/suspend_unmount_manager.h

   1 // Copyright 2015 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 CHROMEOS_DISKS_SUSPEND_UNMOUNT_MANAGER_H_
   6 #define CHROMEOS_DISKS_SUSPEND_UNMOUNT_MANAGER_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "chromeos/chromeos_export.h"
  12 #include "chromeos/dbus/cros_disks_client.h"
  13 #include "chromeos/dbus/power_manager_client.h"
  14
  15 namespace chromeos {
  16 namespace disks {
  17
  18 class DiskMountManager;
  19
  20 // Class to unmount disks at suspend.
  21 class CHROMEOS_EXPORT SuspendUnmountManager
  22     : public PowerManagerClient::Observer {
  23  public:
  24   // The ownership of these raw pointers still remains with the caller.
  25   SuspendUnmountManager(DiskMountManager* disk_mount_manager,
  26                         PowerManagerClient* power_manager_client);
  27   ~SuspendUnmountManager() override;
  28
  29  private:
  30   void OnUnmountComplete(const std::string& mount_path,
  31                          chromeos::MountError error_code);
  32
  33   // PowerManagerClient::Observer
  34   void SuspendImminent() override;
  35   void SuspendDone(const base::TimeDelta& sleep_duration) override;
  36
  37   // Callback passed to DiskMountManager holds weak pointers of this.
  38   DiskMountManager* const disk_mount_manager_;
  39   PowerManagerClient* const power_manager_client_;
  40
  41   // The paths that the manager currently tries to unmount for suspend.
  42   std::set<std::string> unmounting_paths_;
  43
  44   base::Closure suspend_readiness_callback_;
  45
  46   base::WeakPtrFactory<SuspendUnmountManager> weak_ptr_factory_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(SuspendUnmountManager);
  49 };
  50
  51 }  // namespace disks
  52 }  // namespace chromeos
  53
  54 #endif  // CHROMEOS_DISKS_SUSPEND_UNMOUNT_MANAGER_H_