1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/keyed_service/content/browser_context_dependency_manager.h"
#include <algorithm>
#include <deque>
#include <iterator>
#include "base/bind.h"
#include "base/debug/trace_event.h"
#include "components/keyed_service/content/browser_context_keyed_base_factory.h"
#include "content/public/browser/browser_context.h"
#ifndef NDEBUG
#include "base/command_line.h"
#include "base/file_util.h"
// Dumps dependency information about our browser context keyed services
// into a dot file in the browser context directory.
const char kDumpBrowserContextDependencyGraphFlag[] =
"dump-browser-context-graph";
#endif // NDEBUG
void BrowserContextDependencyManager::AddComponent(
BrowserContextKeyedBaseFactory* component) {
dependency_graph_.AddNode(component);
}
void BrowserContextDependencyManager::RemoveComponent(
BrowserContextKeyedBaseFactory* component) {
dependency_graph_.RemoveNode(component);
}
void BrowserContextDependencyManager::AddEdge(
BrowserContextKeyedBaseFactory* depended,
BrowserContextKeyedBaseFactory* dependee) {
dependency_graph_.AddEdge(depended, dependee);
}
void BrowserContextDependencyManager::RegisterProfilePrefsForServices(
const content::BrowserContext* context,
user_prefs::PrefRegistrySyncable* pref_registry) {
std::vector<DependencyNode*> construction_order;
if (!dependency_graph_.GetConstructionOrder(&construction_order)) {
NOTREACHED();
}
for (std::vector<DependencyNode*>::const_iterator it =
construction_order.begin();
it != construction_order.end();
++it) {
BrowserContextKeyedBaseFactory* factory =
static_cast<BrowserContextKeyedBaseFactory*>(*it);
factory->RegisterProfilePrefsIfNecessaryForContext(context, pref_registry);
}
}
void BrowserContextDependencyManager::CreateBrowserContextServices(
content::BrowserContext* context) {
DoCreateBrowserContextServices(context, false);
}
void BrowserContextDependencyManager::CreateBrowserContextServicesForTest(
content::BrowserContext* context) {
DoCreateBrowserContextServices(context, true);
}
void BrowserContextDependencyManager::DoCreateBrowserContextServices(
content::BrowserContext* context,
bool is_testing_context) {
TRACE_EVENT0(
"browser",
"BrowserContextDependencyManager::DoCreateBrowserContextServices")
#ifndef NDEBUG
MarkBrowserContextLiveForTesting(context);
#endif
will_create_browser_context_services_callbacks_.Notify(context);
std::vector<DependencyNode*> construction_order;
if (!dependency_graph_.GetConstructionOrder(&construction_order)) {
NOTREACHED();
}
#ifndef NDEBUG
DumpBrowserContextDependencies(context);
#endif
for (size_t i = 0; i < construction_order.size(); i++) {
BrowserContextKeyedBaseFactory* factory =
static_cast<BrowserContextKeyedBaseFactory*>(construction_order[i]);
if (is_testing_context && factory->ServiceIsNULLWhileTesting()) {
factory->SetEmptyTestingFactory(context);
} else if (factory->ServiceIsCreatedWithBrowserContext()) {
// Create the service.
factory->CreateServiceNow(context);
}
}
}
void BrowserContextDependencyManager::DestroyBrowserContextServices(
content::BrowserContext* context) {
std::vector<DependencyNode*> destruction_order;
if (!dependency_graph_.GetDestructionOrder(&destruction_order)) {
NOTREACHED();
}
#ifndef NDEBUG
DumpBrowserContextDependencies(context);
#endif
for (size_t i = 0; i < destruction_order.size(); i++) {
BrowserContextKeyedBaseFactory* factory =
static_cast<BrowserContextKeyedBaseFactory*>(destruction_order[i]);
factory->BrowserContextShutdown(context);
}
#ifndef NDEBUG
// The context is now dead to the rest of the program.
dead_context_pointers_.insert(context);
#endif
for (size_t i = 0; i < destruction_order.size(); i++) {
BrowserContextKeyedBaseFactory* factory =
static_cast<BrowserContextKeyedBaseFactory*>(destruction_order[i]);
factory->BrowserContextDestroyed(context);
}
}
scoped_ptr<base::CallbackList<void(content::BrowserContext*)>::Subscription>
BrowserContextDependencyManager::
RegisterWillCreateBrowserContextServicesCallbackForTesting(
const base::Callback<void(content::BrowserContext*)>& callback) {
return will_create_browser_context_services_callbacks_.Add(callback);
}
#ifndef NDEBUG
void BrowserContextDependencyManager::AssertBrowserContextWasntDestroyed(
content::BrowserContext* context) {
if (dead_context_pointers_.find(context) != dead_context_pointers_.end()) {
NOTREACHED() << "Attempted to access a BrowserContext that was ShutDown(). "
<< "This is most likely a heap smasher in progress. After "
<< "KeyedService::Shutdown() completes, your "
<< "service MUST NOT refer to depended BrowserContext "
<< "services again.";
}
}
void BrowserContextDependencyManager::MarkBrowserContextLiveForTesting(
content::BrowserContext* context) {
dead_context_pointers_.erase(context);
}
#endif
// static
BrowserContextDependencyManager*
BrowserContextDependencyManager::GetInstance() {
return Singleton<BrowserContextDependencyManager>::get();
}
BrowserContextDependencyManager::BrowserContextDependencyManager() {}
BrowserContextDependencyManager::~BrowserContextDependencyManager() {}
#ifndef NDEBUG
namespace {
std::string BrowserContextKeyedBaseFactoryGetNodeName(DependencyNode* node) {
return static_cast<BrowserContextKeyedBaseFactory*>(node)->name();
}
} // namespace
void BrowserContextDependencyManager::DumpBrowserContextDependencies(
content::BrowserContext* context) {
// Whenever we try to build a destruction ordering, we should also dump a
// dependency graph to "/path/to/context/context-dependencies.dot".
if (CommandLine::ForCurrentProcess()->HasSwitch(
kDumpBrowserContextDependencyGraphFlag)) {
base::FilePath dot_file =
context->GetPath().AppendASCII("browser-context-dependencies.dot");
std::string contents = dependency_graph_.DumpAsGraphviz(
"BrowserContext",
base::Bind(&BrowserContextKeyedBaseFactoryGetNodeName));
base::WriteFile(dot_file, contents.c_str(), contents.size());
}
}
#endif // NDEBUG
|
