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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 "mojo/application/content_handler_factory.h" | |
6 | |
7 #include <set> | |
8 | |
9 #include "base/bind.h" | |
10 #include "base/callback.h" | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "base/threading/platform_thread.h" | |
13 #include "mojo/application/application_runner_chromium.h" | |
14 #include "mojo/application/public/cpp/application_connection.h" | |
15 #include "mojo/application/public/cpp/application_delegate.h" | |
16 #include "mojo/application/public/cpp/application_impl.h" | |
17 #include "mojo/application/public/cpp/interface_factory_impl.h" | |
18 #include "mojo/common/message_pump_mojo.h" | |
19 #include "mojo/public/cpp/bindings/strong_binding.h" | |
20 | |
21 namespace mojo { | |
22 | |
23 namespace { | |
24 | |
25 class ApplicationThread : public base::PlatformThread::Delegate { | |
26 public: | |
27 ApplicationThread( | |
28 scoped_refptr<base::MessageLoopProxy> handler_thread, | |
29 const base::Callback<void(ApplicationThread*)>& termination_callback, | |
30 ContentHandlerFactory::Delegate* handler_delegate, | |
31 InterfaceRequest<Application> application_request, | |
32 URLResponsePtr response) | |
33 : handler_thread_(handler_thread), | |
34 termination_callback_(termination_callback), | |
35 handler_delegate_(handler_delegate), | |
36 application_request_(application_request.Pass()), | |
37 response_(response.Pass()) {} | |
38 | |
39 private: | |
40 void ThreadMain() override { | |
41 handler_delegate_->RunApplication(application_request_.Pass(), | |
42 response_.Pass()); | |
43 handler_thread_->PostTask(FROM_HERE, | |
44 base::Bind(termination_callback_, this)); | |
45 } | |
46 | |
47 scoped_refptr<base::MessageLoopProxy> handler_thread_; | |
48 base::Callback<void(ApplicationThread*)> termination_callback_; | |
49 ContentHandlerFactory::Delegate* handler_delegate_; | |
50 InterfaceRequest<Application> application_request_; | |
51 URLResponsePtr response_; | |
52 | |
53 DISALLOW_COPY_AND_ASSIGN(ApplicationThread); | |
54 }; | |
55 | |
56 class ContentHandlerImpl : public ContentHandler { | |
57 public: | |
58 ContentHandlerImpl(ContentHandlerFactory::Delegate* delegate, | |
59 InterfaceRequest<ContentHandler> request) | |
60 : delegate_(delegate), | |
61 binding_(this, request.Pass()), | |
62 weak_factory_(this) {} | |
63 ~ContentHandlerImpl() override { | |
64 // We're shutting down and doing cleanup. Cleanup may trigger calls back to | |
65 // OnThreadEnd(). As we're doing the cleanup here we don't want to do it in | |
66 // OnThreadEnd() as well. InvalidateWeakPtrs() ensures we don't get any | |
67 // calls to OnThreadEnd(). | |
68 weak_factory_.InvalidateWeakPtrs(); | |
69 for (auto thread : active_threads_) { | |
70 base::PlatformThread::Join(thread.second); | |
71 delete thread.first; | |
72 } | |
73 } | |
74 | |
75 private: | |
76 // Overridden from ContentHandler: | |
77 void StartApplication(InterfaceRequest<Application> application_request, | |
78 URLResponsePtr response) override { | |
79 ApplicationThread* thread = new ApplicationThread( | |
80 base::MessageLoopProxy::current(), | |
81 base::Bind(&ContentHandlerImpl::OnThreadEnd, | |
82 weak_factory_.GetWeakPtr()), | |
83 delegate_, application_request.Pass(), response.Pass()); | |
84 base::PlatformThreadHandle handle; | |
85 bool launched = base::PlatformThread::Create(0, thread, &handle); | |
86 DCHECK(launched); | |
87 active_threads_[thread] = handle; | |
88 } | |
89 | |
90 void OnThreadEnd(ApplicationThread* thread) { | |
91 DCHECK(active_threads_.find(thread) != active_threads_.end()); | |
92 base::PlatformThreadHandle handle = active_threads_[thread]; | |
93 active_threads_.erase(thread); | |
94 base::PlatformThread::Join(handle); | |
95 delete thread; | |
96 } | |
97 | |
98 ContentHandlerFactory::Delegate* delegate_; | |
99 std::map<ApplicationThread*, base::PlatformThreadHandle> active_threads_; | |
100 StrongBinding<ContentHandler> binding_; | |
101 base::WeakPtrFactory<ContentHandlerImpl> weak_factory_; | |
102 | |
103 DISALLOW_COPY_AND_ASSIGN(ContentHandlerImpl); | |
104 }; | |
105 | |
106 } // namespace | |
107 | |
108 ContentHandlerFactory::ContentHandlerFactory(Delegate* delegate) | |
109 : delegate_(delegate) { | |
110 } | |
111 | |
112 ContentHandlerFactory::~ContentHandlerFactory() { | |
113 } | |
114 | |
115 void ContentHandlerFactory::ManagedDelegate::RunApplication( | |
116 InterfaceRequest<Application> application_request, | |
117 URLResponsePtr response) { | |
118 base::MessageLoop loop(common::MessagePumpMojo::Create()); | |
119 auto application = | |
120 this->CreateApplication(application_request.Pass(), response.Pass()); | |
121 if (application) | |
122 loop.Run(); | |
123 } | |
124 | |
125 void ContentHandlerFactory::Create(ApplicationConnection* connection, | |
126 InterfaceRequest<ContentHandler> request) { | |
127 new ContentHandlerImpl(delegate_, request.Pass()); | |
128 } | |
129 | |
130 } // namespace mojo | |
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