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1 // Copyright 2017 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 "services/resource_coordinator/coordination_unit/coordination_unit_impl .h" | |
6 | |
7 #include "base/hash.h" | |
8 #include "base/lazy_instance.h" | |
Primiano Tucci (use gerrit)
2017/04/11 18:04:51
I think you don't need this anymore
oystein (OOO til 10th of July)
2017/04/12 19:15:31
Done.
| |
9 #include "base/logging.h" | |
10 #include "base/strings/string_number_conversions.h" | |
11 #include "mojo/public/cpp/bindings/strong_binding.h" | |
12 #include "services/resource_coordinator/public/cpp/coordination_unit_events.h" | |
13 #include "services/resource_coordinator/public/cpp/coordination_unit_id.h" | |
14 #include "services/service_manager/public/cpp/connection.h" | |
15 | |
16 namespace resource_coordinator { | |
17 | |
18 namespace { | |
19 | |
20 using CUIDMap = std::unordered_map<CoordinationUnitID, CoordinationUnitImpl*>; | |
21 | |
22 CUIDMap* g_cu_map() { | |
23 static CUIDMap* instance = new CUIDMap(); | |
24 return instance; | |
25 } | |
26 | |
27 } // namespace | |
28 | |
29 CoordinationUnitImpl::CoordinationUnitImpl( | |
30 const CoordinationUnitID& id, | |
31 std::unique_ptr<service_manager::ServiceContextRef> service_ref) | |
32 : id_(id) { | |
33 auto it = g_cu_map()->insert(std::make_pair(id_, this)); | |
34 DCHECK(it.second); /* did insert */ | |
Primiano Tucci (use gerrit)
2017/04/11 18:04:51
micro nit: /* -> // , I usually see this for singl
oystein (OOO til 10th of July)
2017/04/12 19:15:31
Done.
| |
35 | |
36 service_ref_ = std::move(service_ref); | |
37 } | |
38 | |
39 CoordinationUnitImpl::~CoordinationUnitImpl() { | |
40 g_cu_map()->erase(id_); | |
41 | |
42 for (auto* child : children_) { | |
Primiano Tucci (use gerrit)
2017/04/11 18:04:51
not very strong on this, but usually I find the fu
oystein (OOO til 10th of July)
2017/04/12 19:15:31
Done.
| |
43 child->RemoveParent(this); | |
44 } | |
45 | |
46 for (auto* parent : parents_) { | |
47 parent->RemoveChild(this); | |
48 } | |
49 } | |
50 | |
51 bool CoordinationUnitImpl::SelfOrParentHasFlagSet(StateFlags state) { | |
52 const base::Optional<bool>& state_flag = state_flags_[state]; | |
53 if (state_flag && *state_flag) | |
54 return true; | |
55 | |
56 for (auto* parent : parents_) { | |
57 if (parent->SelfOrParentHasFlagSet(state)) | |
58 return true; | |
59 } | |
60 | |
61 return false; | |
62 } | |
63 | |
64 void CoordinationUnitImpl::RecalcPolicy() { | |
65 for (auto* child : children_) { | |
66 child->RecalcPolicy(); | |
67 } | |
68 | |
69 if (!policy_callback_) { | |
70 return; | |
71 } | |
72 | |
73 bool background_priority = !SelfOrParentHasFlagSet(TAB_VISIBLE) && | |
74 !SelfOrParentHasFlagSet(AUDIO_PLAYING); | |
75 | |
76 // Send the priority to the client if it's new or changed. | |
77 if (!current_policy_) | |
78 current_policy_ = mojom::Policy::New(); | |
79 else if ((current_policy_->use_background_priority == background_priority) && | |
80 !SelfOrParentHasFlagSet(StateFlags::TEST_STATE)) { | |
81 return; | |
82 } | |
83 | |
84 mojom::PolicyPtr policy = mojom::Policy::New(); | |
85 policy->use_background_priority = background_priority; | |
86 current_policy_->use_background_priority = background_priority; | |
87 | |
88 policy_callback_->SetPolicy(std::move(policy)); | |
89 } | |
90 | |
91 void CoordinationUnitImpl::SendEvent(mojom::EventPtr event) { | |
92 switch (event->type) { | |
93 case EventType::ON_WEBCONTENTS_SHOWN: | |
94 state_flags_[TAB_VISIBLE] = true; | |
95 break; | |
96 case EventType::ON_WEBCONTENTS_HIDDEN: | |
97 state_flags_[TAB_VISIBLE] = false; | |
98 break; | |
99 case EventType::ON_PROCESS_AUDIO_STARTED: | |
100 state_flags_[AUDIO_PLAYING] = true; | |
101 break; | |
102 case EventType::ON_PROCESS_AUDIO_STOPPED: | |
103 state_flags_[AUDIO_PLAYING] = false; | |
104 break; | |
105 case EventType::TEST_EVENT: | |
106 state_flags_[TEST_STATE] = true; | |
107 break; | |
108 default: | |
109 return; | |
110 } | |
111 | |
112 RecalcPolicy(); | |
113 } | |
114 | |
115 void CoordinationUnitImpl::GetID(const GetIDCallback& callback) { | |
116 callback.Run(id_); | |
117 } | |
118 | |
119 void CoordinationUnitImpl::Duplicate(mojom::CoordinationUnitRequest request) { | |
120 bindings_.AddBinding(this, std::move(request)); | |
121 } | |
122 | |
123 void CoordinationUnitImpl::AddChild(const CoordinationUnitID& child_id) { | |
124 if (child_id == id_) | |
125 return; | |
126 | |
127 auto child_iter = g_cu_map()->find(child_id); | |
128 if (child_iter != g_cu_map()->end()) { | |
129 CoordinationUnitImpl* child = child_iter->second; | |
130 if (HasParent(child) || HasChild(child)) | |
131 return; | |
132 | |
133 DCHECK(child->id_ == child_id); | |
134 DCHECK(child != this); | |
135 | |
136 if (AddChild(child)) { | |
137 child->AddParent(this); | |
138 } | |
139 } | |
140 } | |
141 | |
142 bool CoordinationUnitImpl::AddChild(CoordinationUnitImpl* child) { | |
143 return children_.count(child) ? false : children_.insert(child).second; | |
144 } | |
145 | |
146 void CoordinationUnitImpl::RemoveChild(CoordinationUnitImpl* child) { | |
147 size_t children_removed = children_.erase(child); | |
148 DCHECK_EQ(1u, children_removed); | |
149 } | |
150 | |
151 void CoordinationUnitImpl::AddParent(CoordinationUnitImpl* parent) { | |
152 DCHECK(parents_.find(parent) == parents_.end()); | |
Primiano Tucci (use gerrit)
2017/04/11 18:04:51
maybe just use .count() for uniformity with ::AddC
oystein (OOO til 10th of July)
2017/04/12 19:15:31
Done.
| |
153 parents_.insert(parent); | |
154 | |
155 RecalcPolicy(); | |
156 } | |
157 | |
158 void CoordinationUnitImpl::RemoveParent(CoordinationUnitImpl* parent) { | |
159 size_t parents_removed = parents_.erase(parent); | |
160 DCHECK_EQ(1u, parents_removed); | |
161 | |
162 RecalcPolicy(); | |
163 } | |
164 | |
165 bool CoordinationUnitImpl::HasParent(CoordinationUnitImpl* unit) { | |
166 for (auto* parent : parents_) { | |
167 if (parent == unit || parent->HasParent(unit)) | |
168 return true; | |
169 } | |
170 | |
171 return false; | |
172 } | |
173 | |
174 bool CoordinationUnitImpl::HasChild(CoordinationUnitImpl* unit) { | |
175 for (auto* child : children_) { | |
176 if (child == unit || child->HasChild(unit)) | |
177 return true; | |
178 } | |
179 | |
180 return false; | |
181 } | |
182 | |
183 void CoordinationUnitImpl::SetPolicyCallback( | |
184 mojom::PolicyCallbackPtr callback) { | |
185 callback.set_connection_error_handler(base::Bind( | |
186 &CoordinationUnitImpl::UnregisterPolicyCallback, base::Unretained(this))); | |
187 | |
188 policy_callback_ = std::move(callback); | |
189 | |
190 RecalcPolicy(); | |
191 } | |
192 | |
193 void CoordinationUnitImpl::UnregisterPolicyCallback() { | |
194 policy_callback_.reset(); | |
195 current_policy_.reset(); | |
196 } | |
197 | |
198 } // namespace resource_coordinator | |
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