src/ui/events/ozone/evdev/scoped_udev.h

   1 // Copyright 2014 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 UI_EVENTS_OZONE_EVDEV_SCOPED_UDEV_H_
   6 #define UI_EVENTS_OZONE_EVDEV_SCOPED_UDEV_H_
   7
   8 #include <libudev.h>
   9
  10 #include "base/memory/scoped_ptr.h"
  11
  12 // This file enables management of udev object references using scoped_ptr<> by
  13 // associating a custom deleter that drops the reference rather than deleting.
  14
  15 namespace ui {
  16
  17 // Scoped struct udev.
  18 struct UdevDeleter {
  19   void operator()(struct udev* udev) { udev_unref(udev); }
  20 };
  21 typedef scoped_ptr<struct udev, UdevDeleter> scoped_udev;
  22
  23 // Scoped struct udev_device.
  24 struct UdevDeviceDeleter {
  25   void operator()(struct udev_device* udev_device) {
  26     udev_device_unref(udev_device);
  27   }
  28 };
  29 typedef scoped_ptr<struct udev_device, UdevDeviceDeleter> scoped_udev_device;
  30
  31 // Scoped struct udev_enumerate.
  32 struct UdevEnumerateDeleter {
  33   void operator()(struct udev_enumerate* udev_enumerate) {
  34     udev_enumerate_unref(udev_enumerate);
  35   }
  36 };
  37 typedef scoped_ptr<struct udev_enumerate, UdevEnumerateDeleter>
  38     scoped_udev_enumerate;
  39
  40 // Scoped struct udev_monitor.
  41 struct UdevMonitorDeleter {
  42   void operator()(struct udev_monitor* udev_monitor) {
  43     udev_monitor_unref(udev_monitor);
  44   }
  45 };
  46 typedef scoped_ptr<struct udev_monitor, UdevMonitorDeleter> scoped_udev_monitor;
  47
  48 }  // namespace ui
  49
  50 #endif  // UI_EVENTS_OZONE_EVDEV_SCOPED_UDEV_H_