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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef SERVICES_SHELL_PUBLIC_CPP_SHELL_CONNECTION_REF_H_ | 5 #ifndef SERVICES_SHELL_PUBLIC_CPP_SERVICE_CONTEXT_REF_H_ |
6 #define SERVICES_SHELL_PUBLIC_CPP_SHELL_CONNECTION_REF_H_ | 6 #define SERVICES_SHELL_PUBLIC_CPP_SERVICE_CONTEXT_REF_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
11 #include "base/macros.h" | 11 #include "base/macros.h" |
12 #include "base/memory/weak_ptr.h" | 12 #include "base/memory/weak_ptr.h" |
13 | 13 |
14 namespace shell { | 14 namespace shell { |
15 | 15 |
16 class ShellConnectionRefImpl; | 16 class ServiceContextRefImpl; |
17 | 17 |
18 // An interface implementation can keep this object as a member variable to | 18 // An interface implementation can keep this object as a member variable to |
19 // hold a reference to the ShellConnection, keeping it alive as long as the | 19 // hold a reference to the ServiceContext, keeping it alive as long as the |
20 // bound implementation exists. | 20 // bound implementation exists. |
21 // | 21 // |
22 // This class is safe to use on any thread and instances may be passed to other | 22 // This class is safe to use on any thread and instances may be passed to other |
23 // threads. However, each instance should only be used on one thread at a time, | 23 // threads. However, each instance should only be used on one thread at a time, |
24 // otherwise there'll be races between the AddRef resulting from cloning and | 24 // otherwise there'll be races between the AddRef resulting from cloning and |
25 // destruction. | 25 // destruction. |
26 class ShellConnectionRef { | 26 class ServiceContextRef { |
27 public: | 27 public: |
28 virtual ~ShellConnectionRef() {} | 28 virtual ~ServiceContextRef() {} |
29 | 29 |
30 virtual std::unique_ptr<ShellConnectionRef> Clone() = 0; | 30 virtual std::unique_ptr<ServiceContextRef> Clone() = 0; |
31 }; | 31 }; |
32 | 32 |
33 class ShellConnectionRefFactory { | 33 class ServiceContextRefFactory { |
34 public: | 34 public: |
35 // |quit_closure| is called whenever the last ref is destroyed. | 35 // |quit_closure| is called whenever the last ref is destroyed. |
36 explicit ShellConnectionRefFactory(const base::Closure& quit_closure); | 36 explicit ServiceContextRefFactory(const base::Closure& quit_closure); |
37 ~ShellConnectionRefFactory(); | 37 ~ServiceContextRefFactory(); |
38 | 38 |
39 std::unique_ptr<ShellConnectionRef> CreateRef(); | 39 std::unique_ptr<ServiceContextRef> CreateRef(); |
40 | 40 |
41 bool HasNoRefs() const { return !ref_count_; } | 41 bool HasNoRefs() const { return !ref_count_; } |
42 | 42 |
43 private: | 43 private: |
44 friend ShellConnectionRefImpl; | 44 friend ServiceContextRefImpl; |
45 | 45 |
46 // Called from ShellConnectionRefImpl. | 46 // Called from ServiceContextRefImpl. |
47 void AddRef(); | 47 void AddRef(); |
48 void Release(); | 48 void Release(); |
49 | 49 |
50 const base::Closure quit_closure_; | 50 const base::Closure quit_closure_; |
51 int ref_count_ = 0; | 51 int ref_count_ = 0; |
52 base::WeakPtrFactory<ShellConnectionRefFactory> weak_factory_; | 52 base::WeakPtrFactory<ServiceContextRefFactory> weak_factory_; |
53 | 53 |
54 DISALLOW_COPY_AND_ASSIGN(ShellConnectionRefFactory); | 54 DISALLOW_COPY_AND_ASSIGN(ServiceContextRefFactory); |
55 }; | 55 }; |
56 | 56 |
57 } // namespace shell | 57 } // namespace shell |
58 | 58 |
59 #endif // SERVICES_SHELL_PUBLIC_CPP_SHELL_CONNECTION_REF_H_ | 59 #endif // SERVICES_SHELL_PUBLIC_CPP_SERVICE_CONTEXT_REF_H_ |
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