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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "services/shell/public/cpp/service_runner.h" | |
6 | |
7 #include "base/at_exit.h" | |
8 #include "base/bind.h" | |
9 #include "base/command_line.h" | |
10 #include "base/message_loop/message_loop.h" | |
11 #include "base/process/launch.h" | |
12 #include "base/run_loop.h" | |
13 #include "services/shell/public/cpp/service.h" | |
14 #include "services/shell/public/cpp/service_context.h" | |
15 | |
16 namespace shell { | |
17 | |
18 int g_service_runner_argc; | |
19 const char* const* g_service_runner_argv; | |
20 | |
21 ServiceRunner::ServiceRunner(Service* service) | |
22 : service_(base::WrapUnique(service)), | |
23 message_loop_type_(base::MessageLoop::TYPE_DEFAULT), | |
24 has_run_(false) {} | |
25 | |
26 ServiceRunner::~ServiceRunner() {} | |
27 | |
28 void ServiceRunner::InitBaseCommandLine() { | |
29 base::CommandLine::Init(g_service_runner_argc, g_service_runner_argv); | |
30 } | |
31 | |
32 void ServiceRunner::set_message_loop_type(base::MessageLoop::Type type) { | |
33 DCHECK_NE(base::MessageLoop::TYPE_CUSTOM, type); | |
34 DCHECK(!has_run_); | |
35 | |
36 message_loop_type_ = type; | |
37 } | |
38 | |
39 MojoResult ServiceRunner::Run(MojoHandle service_request_handle, | |
40 bool init_base) { | |
41 DCHECK(!has_run_); | |
42 has_run_ = true; | |
43 | |
44 std::unique_ptr<base::AtExitManager> at_exit; | |
45 if (init_base) { | |
46 InitBaseCommandLine(); | |
47 at_exit.reset(new base::AtExitManager); | |
48 } | |
49 | |
50 { | |
51 std::unique_ptr<base::MessageLoop> loop; | |
52 loop.reset(new base::MessageLoop(message_loop_type_)); | |
53 | |
54 std::unique_ptr<ServiceContext> context(new ServiceContext( | |
55 service_.get(), | |
56 mojo::MakeRequest<mojom::Service>(mojo::MakeScopedHandle( | |
57 mojo::MessagePipeHandle(service_request_handle))))); | |
58 base::RunLoop run_loop; | |
59 context->SetConnectionLostClosure(run_loop.QuitClosure()); | |
60 service_->set_context(std::move(context)); | |
61 run_loop.Run(); | |
62 // It's very common for the service to cache the app and terminate on | |
63 // errors. If we don't delete the service before the app we run the risk of | |
64 // the service having a stale reference to the app and trying to use it. | |
65 // Note that we destruct the message loop first because that might trigger | |
66 // connection error handlers and they might access objects created by the | |
67 // service. | |
68 loop.reset(); | |
69 service_.reset(); | |
70 } | |
71 return MOJO_RESULT_OK; | |
72 } | |
73 | |
74 MojoResult ServiceRunner::Run(MojoHandle service_request_handle) { | |
75 bool init_base = true; | |
76 if (base::CommandLine::InitializedForCurrentProcess()) { | |
77 init_base = | |
78 !base::CommandLine::ForCurrentProcess()->HasSwitch("single-process"); | |
79 } | |
80 return Run(service_request_handle, init_base); | |
81 } | |
82 | |
83 void ServiceRunner::DestroyServiceContext() { | |
84 service_->set_context(std::unique_ptr<ServiceContext>()); | |
85 } | |
86 | |
87 void ServiceRunner::Quit() { | |
88 base::MessageLoop::current()->QuitWhenIdle(); | |
89 } | |
90 | |
91 } // namespace shell | |
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