device/udev_linux/udev_loader.cc

   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 #include "device/udev_linux/udev_loader.h"
   6
   7 #include "base/logging.h"
   8 #include "device/udev_linux/udev0_loader.h"
   9 #include "device/udev_linux/udev1_loader.h"
  10
  11 namespace device {
  12
  13 namespace {
  14
  15 UdevLoader* g_udev_loader = NULL;
  16
  17 }  // namespace
  18
  19 // static
  20 UdevLoader* UdevLoader::Get() {
  21   if (g_udev_loader)
  22     return g_udev_loader;
  23
  24   scoped_ptr<UdevLoader> udev_loader;
  25   udev_loader.reset(new Udev1Loader);
  26   if (udev_loader->Init()) {
  27     g_udev_loader = udev_loader.release();
  28     return g_udev_loader;
  29   }
  30
  31   udev_loader.reset(new Udev0Loader);
  32   if (udev_loader->Init()) {
  33     g_udev_loader = udev_loader.release();
  34     return g_udev_loader;
  35   }
  36   CHECK(false);
  37   return NULL;
  38 }
  39
  40 UdevLoader::~UdevLoader() {
  41 }
  42
  43 }  // namespace device