device/core/device_client.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/core/device_client.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace device {
  10
  11 namespace {
  12
  13 DeviceClient* g_instance = NULL;
  14
  15 }  // namespace
  16
  17 DeviceClient::DeviceClient() {
  18   DCHECK(!g_instance);
  19   g_instance = this;
  20 }
  21
  22 DeviceClient::~DeviceClient() {
  23   g_instance = NULL;
  24 }
  25
  26 /* static */
  27 DeviceClient* DeviceClient::Get() {
  28   DCHECK(g_instance);
  29   return g_instance;
  30 }
  31
  32 UsbService* DeviceClient::GetUsbService() {
  33   // This should never be called by clients which do not support the USB API.
  34   NOTREACHED();
  35   return NULL;
  36 }
  37
  38 HidService* DeviceClient::GetHidService() {
  39   // This should never be called by clients which do not support the HID API.
  40   NOTREACHED();
  41   return NULL;
  42 }
  43
  44 }  // namespace device