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Issue 2916823002: Move Mus into chrome's process when running with --mus.
Patch Set: Removing debug include. Created 3 years, 5 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 "ui/events/platform/platform_event_source.h" 5 #include "ui/events/platform/platform_event_source.h"
6 6
7 #include <algorithm> 7 #include <algorithm>
8 8
9 #include "base/lazy_instance.h"
9 #include "base/memory/ptr_util.h" 10 #include "base/memory/ptr_util.h"
10 #include "base/message_loop/message_loop.h" 11 #include "base/message_loop/message_loop.h"
12 #include "base/threading/thread_local.h"
11 #include "ui/events/platform/platform_event_dispatcher.h" 13 #include "ui/events/platform/platform_event_dispatcher.h"
12 #include "ui/events/platform/platform_event_observer.h" 14 #include "ui/events/platform/platform_event_observer.h"
13 #include "ui/events/platform/scoped_event_dispatcher.h" 15 #include "ui/events/platform/scoped_event_dispatcher.h"
14 16
15 namespace ui { 17 namespace ui {
16 18
17 // static 19 namespace {
18 PlatformEventSource* PlatformEventSource::instance_ = NULL; 20
21 // PlatformEventSource singleton is thread local so that different instances
22 // can be used on different threads (e.g. browser thread should be able to
23 // access PlatformEventSource owned by the UI Service's thread).
24 base::LazyInstance<base::ThreadLocalPointer<PlatformEventSource>>::Leaky
25 lazy_tls_ptr = LAZY_INSTANCE_INITIALIZER;
26
27 } // namespace
19 28
20 PlatformEventSource::PlatformEventSource() 29 PlatformEventSource::PlatformEventSource()
21 : overridden_dispatcher_(NULL), 30 : overridden_dispatcher_(NULL),
22 overridden_dispatcher_restored_(false) { 31 overridden_dispatcher_restored_(false) {
23 CHECK(!instance_) << "Only one platform event source can be created."; 32 CHECK(!lazy_tls_ptr.Pointer()->Get())
24 instance_ = this; 33 << "Only one platform event source can be created.";
34 lazy_tls_ptr.Pointer()->Set(this);
25 } 35 }
26 36
27 PlatformEventSource::~PlatformEventSource() { 37 PlatformEventSource::~PlatformEventSource() {
28 CHECK_EQ(this, instance_); 38 CHECK_EQ(this, lazy_tls_ptr.Pointer()->Get());
29 instance_ = NULL; 39 lazy_tls_ptr.Pointer()->Set(nullptr);
30 } 40 }
31 41
32 PlatformEventSource* PlatformEventSource::GetInstance() { return instance_; } 42 PlatformEventSource* PlatformEventSource::GetInstance() {
43 return lazy_tls_ptr.Pointer()->Get();
44 }
33 45
34 void PlatformEventSource::AddPlatformEventDispatcher( 46 void PlatformEventSource::AddPlatformEventDispatcher(
35 PlatformEventDispatcher* dispatcher) { 47 PlatformEventDispatcher* dispatcher) {
36 CHECK(dispatcher); 48 CHECK(dispatcher);
37 dispatchers_.AddObserver(dispatcher); 49 dispatchers_.AddObserver(dispatcher);
38 OnDispatcherListChanged(); 50 OnDispatcherListChanged();
39 } 51 }
40 52
41 void PlatformEventSource::RemovePlatformEventDispatcher( 53 void PlatformEventSource::RemovePlatformEventDispatcher(
42 PlatformEventDispatcher* dispatcher) { 54 PlatformEventDispatcher* dispatcher) {
(...skipping 58 matching lines...) Expand 10 before | Expand all | Expand 10 after
101 113
102 void PlatformEventSource::OnDispatcherListChanged() { 114 void PlatformEventSource::OnDispatcherListChanged() {
103 } 115 }
104 116
105 void PlatformEventSource::OnOverriddenDispatcherRestored() { 117 void PlatformEventSource::OnOverriddenDispatcherRestored() {
106 CHECK(overridden_dispatcher_); 118 CHECK(overridden_dispatcher_);
107 overridden_dispatcher_restored_ = true; 119 overridden_dispatcher_restored_ = true;
108 } 120 }
109 121
110 } // namespace ui 122 } // namespace ui
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