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Issue 1314273002: Manage UsbService lifetime in DeviceClient implementations. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 3 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "device/core/device_client.h" 5 #include "device/core/device_client.h"
6 6
7 #include "base/logging.h" 7 #include "base/logging.h"
8 8
9 namespace device { 9 namespace device {
10 10
11 namespace { 11 namespace {
12 12
13 DeviceClient* g_instance = NULL; 13 DeviceClient* g_instance;
14 14
15 } // namespace 15 } // namespace
16 16
17 DeviceClient::DeviceClient() { 17 DeviceClient::DeviceClient() {
18 DCHECK(!g_instance);
19 g_instance = this; 18 g_instance = this;
20 } 19 }
21 20
22 DeviceClient::~DeviceClient() { 21 DeviceClient::~DeviceClient() {
23 g_instance = NULL; 22 g_instance = nullptr;
24 } 23 }
25 24
26 /* static */ 25 /* static */
27 DeviceClient* DeviceClient::Get() { 26 DeviceClient* DeviceClient::Get() {
28 DCHECK(g_instance); 27 DCHECK(g_instance);
29 return g_instance; 28 return g_instance;
30 } 29 }
31 30
32 UsbService* DeviceClient::GetUsbService() { 31 UsbService* DeviceClient::GetUsbService() {
33 // This should never be called by clients which do not support the USB API. 32 // This should never be called by clients which do not support the USB API.
34 NOTREACHED(); 33 NOTREACHED();
35 return NULL; 34 return nullptr;
36 } 35 }
37 36
38 HidService* DeviceClient::GetHidService() { 37 HidService* DeviceClient::GetHidService() {
39 // This should never be called by clients which do not support the HID API. 38 // This should never be called by clients which do not support the HID API.
40 NOTREACHED(); 39 NOTREACHED();
41 return NULL; 40 return nullptr;
42 } 41 }
43 42
44 } // namespace device 43 } // namespace device
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