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1 // Copyright 2013 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/shell/standalone/context.h" | |
6 | |
7 #include <stddef.h> | |
8 #include <stdint.h> | |
9 | |
10 #include <utility> | |
11 #include <vector> | |
12 | |
13 #include "base/bind.h" | |
14 #include "base/command_line.h" | |
15 #include "base/files/file_path.h" | |
16 #include "base/json/json_file_value_serializer.h" | |
17 #include "base/lazy_instance.h" | |
18 #include "base/location.h" | |
19 #include "base/macros.h" | |
20 #include "base/memory/ptr_util.h" | |
21 #include "base/path_service.h" | |
22 #include "base/process/process_info.h" | |
23 #include "base/run_loop.h" | |
24 #include "base/single_thread_task_runner.h" | |
25 #include "base/strings/string_number_conversions.h" | |
26 #include "base/strings/string_split.h" | |
27 #include "base/strings/string_util.h" | |
28 #include "base/strings/utf_string_conversions.h" | |
29 #include "base/threading/sequenced_worker_pool.h" | |
30 #include "base/threading/thread_task_runner_handle.h" | |
31 #include "base/trace_event/trace_event.h" | |
32 #include "build/build_config.h" | |
33 #include "components/tracing/common/tracing_switches.h" | |
34 #include "mojo/edk/embedder/embedder.h" | |
35 #include "mojo/public/cpp/bindings/strong_binding.h" | |
36 #include "services/catalog/catalog.h" | |
37 #include "services/catalog/store.h" | |
38 #include "services/shell/connect_params.h" | |
39 #include "services/shell/public/cpp/names.h" | |
40 #include "services/shell/runner/common/switches.h" | |
41 #include "services/shell/runner/host/in_process_native_runner.h" | |
42 #include "services/shell/runner/host/out_of_process_native_runner.h" | |
43 #include "services/shell/standalone/tracer.h" | |
44 #include "services/shell/switches.h" | |
45 #include "services/tracing/public/cpp/provider.h" | |
46 #include "services/tracing/public/cpp/switches.h" | |
47 #include "services/tracing/public/interfaces/tracing.mojom.h" | |
48 | |
49 #if defined(OS_MACOSX) | |
50 #include "services/shell/runner/host/mach_broker.h" | |
51 #endif | |
52 | |
53 namespace shell { | |
54 namespace { | |
55 | |
56 base::FilePath::StringType GetPathFromCommandLineSwitch( | |
57 const base::StringPiece& value) { | |
58 #if defined(OS_POSIX) | |
59 return value.as_string(); | |
60 #elif defined(OS_WIN) | |
61 return base::UTF8ToUTF16(value); | |
62 #endif // OS_POSIX | |
63 } | |
64 | |
65 // Used to ensure we only init once. | |
66 class Setup { | |
67 public: | |
68 Setup() { mojo::edk::Init(); } | |
69 | |
70 ~Setup() {} | |
71 | |
72 private: | |
73 DISALLOW_COPY_AND_ASSIGN(Setup); | |
74 }; | |
75 | |
76 class TracingInterfaceProvider : public mojom::InterfaceProvider { | |
77 public: | |
78 explicit TracingInterfaceProvider(Tracer* tracer) : tracer_(tracer) {} | |
79 ~TracingInterfaceProvider() override {} | |
80 | |
81 // mojom::InterfaceProvider: | |
82 void GetInterface(const std::string& interface_name, | |
83 mojo::ScopedMessagePipeHandle client_handle) override { | |
84 if (tracer_ && interface_name == tracing::mojom::Provider::Name_) { | |
85 tracer_->ConnectToProvider( | |
86 mojo::MakeRequest<tracing::mojom::Provider>( | |
87 std::move(client_handle))); | |
88 } | |
89 } | |
90 | |
91 private: | |
92 Tracer* tracer_; | |
93 | |
94 DISALLOW_COPY_AND_ASSIGN(TracingInterfaceProvider); | |
95 }; | |
96 | |
97 const size_t kMaxBlockingPoolThreads = 3; | |
98 | |
99 std::unique_ptr<base::Thread> CreateIOThread(const char* name) { | |
100 std::unique_ptr<base::Thread> thread(new base::Thread(name)); | |
101 base::Thread::Options options; | |
102 options.message_loop_type = base::MessageLoop::TYPE_IO; | |
103 thread->StartWithOptions(options); | |
104 return thread; | |
105 } | |
106 | |
107 void OnInstanceQuit(const std::string& name, const Identity& identity) { | |
108 if (name == identity.name()) | |
109 base::MessageLoop::current()->QuitWhenIdle(); | |
110 } | |
111 | |
112 } // namespace | |
113 | |
114 Context::InitParams::InitParams() {} | |
115 Context::InitParams::~InitParams() {} | |
116 | |
117 Context::Context() | |
118 : io_thread_(CreateIOThread("io_thread")), | |
119 main_entry_time_(base::Time::Now()) {} | |
120 | |
121 Context::~Context() { | |
122 DCHECK(!base::MessageLoop::current()); | |
123 blocking_pool_->Shutdown(); | |
124 } | |
125 | |
126 // static | |
127 void Context::EnsureEmbedderIsInitialized() { | |
128 static base::LazyInstance<Setup>::Leaky setup = LAZY_INSTANCE_INITIALIZER; | |
129 setup.Get(); | |
130 } | |
131 | |
132 void Context::Init(std::unique_ptr<InitParams> init_params) { | |
133 TRACE_EVENT0("mojo_shell", "Context::Init"); | |
134 const base::CommandLine& command_line = | |
135 *base::CommandLine::ForCurrentProcess(); | |
136 | |
137 bool trace_startup = command_line.HasSwitch(::switches::kTraceStartup); | |
138 if (trace_startup) { | |
139 tracer_.Start( | |
140 command_line.GetSwitchValueASCII(::switches::kTraceStartup), | |
141 command_line.GetSwitchValueASCII(::switches::kTraceStartupDuration), | |
142 "mojo_runner.trace"); | |
143 } | |
144 | |
145 if (!init_params || init_params->init_edk) | |
146 EnsureEmbedderIsInitialized(); | |
147 | |
148 service_manager_runner_ = base::ThreadTaskRunnerHandle::Get(); | |
149 blocking_pool_ = | |
150 new base::SequencedWorkerPool(kMaxBlockingPoolThreads, "blocking_pool", | |
151 base::TaskPriority::USER_VISIBLE); | |
152 | |
153 init_edk_ = !init_params || init_params->init_edk; | |
154 if (init_edk_) { | |
155 mojo::edk::InitIPCSupport(this, io_thread_->task_runner().get()); | |
156 #if defined(OS_MACOSX) | |
157 mojo::edk::SetMachPortProvider(MachBroker::GetInstance()->port_provider()); | |
158 #endif | |
159 } | |
160 | |
161 std::unique_ptr<NativeRunnerFactory> runner_factory; | |
162 if (command_line.HasSwitch(switches::kSingleProcess)) { | |
163 #if defined(COMPONENT_BUILD) | |
164 LOG(ERROR) << "Running Mojo in single process component build, which isn't " | |
165 << "supported because statics in apps interact. Use static build" | |
166 << " or don't pass --single-process."; | |
167 #endif | |
168 runner_factory.reset( | |
169 new InProcessNativeRunnerFactory(blocking_pool_.get())); | |
170 } else { | |
171 NativeRunnerDelegate* native_runner_delegate = init_params ? | |
172 init_params->native_runner_delegate : nullptr; | |
173 runner_factory.reset(new OutOfProcessNativeRunnerFactory( | |
174 blocking_pool_.get(), native_runner_delegate)); | |
175 } | |
176 std::unique_ptr<catalog::Store> store; | |
177 if (init_params) | |
178 store = std::move(init_params->catalog_store); | |
179 catalog_.reset( | |
180 new catalog::Catalog(blocking_pool_.get(), std::move(store), nullptr)); | |
181 service_manager_.reset(new ServiceManager(std::move(runner_factory), | |
182 catalog_->TakeService())); | |
183 | |
184 if (command_line.HasSwitch(::switches::kServiceOverrides)) { | |
185 base::FilePath overrides_file(GetPathFromCommandLineSwitch( | |
186 command_line.GetSwitchValueASCII(::switches::kServiceOverrides))); | |
187 JSONFileValueDeserializer deserializer(overrides_file); | |
188 int error = 0; | |
189 std::string message; | |
190 std::unique_ptr<base::Value> contents = | |
191 deserializer.Deserialize(&error, &message); | |
192 if (!contents) { | |
193 LOG(ERROR) << "Failed to parse service overrides file: " << message; | |
194 } else { | |
195 std::unique_ptr<ServiceOverrides> service_overrides = | |
196 base::MakeUnique<ServiceOverrides>(std::move(contents)); | |
197 for (const auto& iter : service_overrides->entries()) { | |
198 if (!iter.second.package_name.empty()) | |
199 catalog_->OverridePackageName(iter.first, iter.second.package_name); | |
200 } | |
201 service_manager_->SetServiceOverrides(std::move(service_overrides)); | |
202 } | |
203 } | |
204 | |
205 mojom::InterfaceProviderPtr tracing_remote_interfaces; | |
206 mojom::InterfaceProviderPtr tracing_local_interfaces; | |
207 mojo::MakeStrongBinding(base::MakeUnique<TracingInterfaceProvider>(&tracer_), | |
208 mojo::GetProxy(&tracing_local_interfaces)); | |
209 | |
210 std::unique_ptr<ConnectParams> params(new ConnectParams); | |
211 params->set_source(CreateServiceManagerIdentity()); | |
212 params->set_target(Identity("service:tracing", mojom::kRootUserID)); | |
213 params->set_remote_interfaces(mojo::GetProxy(&tracing_remote_interfaces)); | |
214 service_manager_->Connect(std::move(params)); | |
215 | |
216 if (command_line.HasSwitch(tracing::kTraceStartup)) { | |
217 tracing::mojom::CollectorPtr coordinator; | |
218 auto coordinator_request = GetProxy(&coordinator); | |
219 tracing_remote_interfaces->GetInterface( | |
220 tracing::mojom::Collector::Name_, | |
221 coordinator_request.PassMessagePipe()); | |
222 tracer_.StartCollectingFromTracingService(std::move(coordinator)); | |
223 } | |
224 | |
225 // Record the shell startup metrics used for performance testing. | |
226 if (base::CommandLine::ForCurrentProcess()->HasSwitch( | |
227 tracing::kEnableStatsCollectionBindings)) { | |
228 tracing::mojom::StartupPerformanceDataCollectorPtr collector; | |
229 tracing_remote_interfaces->GetInterface( | |
230 tracing::mojom::StartupPerformanceDataCollector::Name_, | |
231 mojo::GetProxy(&collector).PassMessagePipe()); | |
232 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX) | |
233 // CurrentProcessInfo::CreationTime is only defined on some platforms. | |
234 const base::Time creation_time = base::CurrentProcessInfo::CreationTime(); | |
235 collector->SetShellProcessCreationTime(creation_time.ToInternalValue()); | |
236 #endif | |
237 collector->SetShellMainEntryPointTime(main_entry_time_.ToInternalValue()); | |
238 } | |
239 } | |
240 | |
241 void Context::Shutdown() { | |
242 // Actions triggered by Shell's destructor may require a current message loop, | |
243 // so we should destruct it explicitly now as ~Context() occurs post message | |
244 // loop shutdown. | |
245 service_manager_.reset(); | |
246 | |
247 DCHECK_EQ(base::ThreadTaskRunnerHandle::Get(), service_manager_runner_); | |
248 | |
249 // If we didn't initialize the edk we should not shut it down. | |
250 if (!init_edk_) | |
251 return; | |
252 | |
253 TRACE_EVENT0("mojo_shell", "Context::Shutdown"); | |
254 // Post a task in case OnShutdownComplete is called synchronously. | |
255 base::ThreadTaskRunnerHandle::Get()->PostTask( | |
256 FROM_HERE, base::Bind(mojo::edk::ShutdownIPCSupport)); | |
257 // We'll quit when we get OnShutdownComplete(). | |
258 base::RunLoop().Run(); | |
259 } | |
260 | |
261 void Context::OnShutdownComplete() { | |
262 DCHECK_EQ(base::ThreadTaskRunnerHandle::Get(), service_manager_runner_); | |
263 base::MessageLoop::current()->QuitWhenIdle(); | |
264 } | |
265 | |
266 void Context::RunCommandLineApplication() { | |
267 base::CommandLine* command_line = base::CommandLine::ForCurrentProcess(); | |
268 base::CommandLine::StringVector args = command_line->GetArgs(); | |
269 for (size_t i = 0; i < args.size(); ++i) { | |
270 #if defined(OS_WIN) | |
271 std::string possible_app = base::WideToUTF8(args[i]); | |
272 #else | |
273 std::string possible_app = args[i]; | |
274 #endif | |
275 if (GetNameType(possible_app) == kNameType_Service) { | |
276 Run(possible_app); | |
277 break; | |
278 } | |
279 } | |
280 } | |
281 | |
282 void Context::Run(const std::string& name) { | |
283 service_manager_->SetInstanceQuitCallback(base::Bind(&OnInstanceQuit, name)); | |
284 | |
285 mojom::InterfaceProviderPtr remote_interfaces; | |
286 mojom::InterfaceProviderPtr local_interfaces; | |
287 | |
288 std::unique_ptr<ConnectParams> params(new ConnectParams); | |
289 params->set_source(CreateServiceManagerIdentity()); | |
290 params->set_target(Identity(name, mojom::kRootUserID)); | |
291 params->set_remote_interfaces(mojo::GetProxy(&remote_interfaces)); | |
292 service_manager_->Connect(std::move(params)); | |
293 } | |
294 | |
295 } // namespace shell | |
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