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1 // Copyright 2016 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 #ifndef CONTENT_COMMON_MOJO_EMBEDDED_APPLICATION_RUNNER_H_ | |
6 #define CONTENT_COMMON_MOJO_EMBEDDED_APPLICATION_RUNNER_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/callback.h" | |
11 #include "base/macros.h" | |
12 #include "base/memory/ref_counted.h" | |
13 #include "base/memory/weak_ptr.h" | |
14 #include "base/single_thread_task_runner.h" | |
15 #include "base/strings/string_piece.h" | |
16 #include "content/public/common/mojo_application_info.h" | |
17 #include "services/shell/public/cpp/service.h" | |
18 #include "services/shell/public/interfaces/service.mojom.h" | |
19 | |
20 namespace content { | |
21 | |
22 // Hosts an in-process application instance that supports multiple Service | |
23 // connections. The first incoming connection will invoke a provided factory | |
24 // function to instantiate the application, and the application will | |
25 // automatically be torn down when its last connection is lost. The application | |
26 // may be launched and torn down multiple times by a single | |
27 // EmbeddedApplicationRunner instance. | |
28 class EmbeddedApplicationRunner { | |
29 public: | |
30 // Constructs a runner which hosts a Mojo application. If an existing instance | |
31 // of the app is not running when an incoming connection is made, details from | |
32 // |info| will be used to construct a new instance. | |
33 EmbeddedApplicationRunner(const base::StringPiece& name, | |
34 const MojoApplicationInfo& info); | |
35 ~EmbeddedApplicationRunner(); | |
36 | |
37 // Binds an incoming ServiceRequest for this application. If the | |
38 // application isn't already running, it's started. Otherwise the request is | |
39 // bound to the running instance. | |
40 void BindServiceRequest(shell::mojom::ServiceRequest request); | |
41 | |
42 // Sets a callback to run after the application loses its last connection and | |
43 // is torn down. | |
44 void SetQuitClosure(const base::Closure& quit_closure); | |
45 | |
46 private: | |
47 class Instance; | |
48 | |
49 void OnQuit(); | |
50 | |
51 // A reference to the application instance which may operate on the | |
52 // |application_task_runner_|'s thread. | |
53 scoped_refptr<Instance> instance_; | |
54 | |
55 base::Closure quit_closure_; | |
56 | |
57 base::WeakPtrFactory<EmbeddedApplicationRunner> weak_factory_; | |
58 | |
59 DISALLOW_COPY_AND_ASSIGN(EmbeddedApplicationRunner); | |
60 }; | |
61 | |
62 } // namespace content | |
63 | |
64 #endif // CONTENT_COMMON_MOJO_EMBEDDED_APPLICATION_RUNNER_H_ | |
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