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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_MESSAGE_LOOP_REF_H_ | 5 #ifndef SERVICES_SHELL_PUBLIC_CPP_MESSAGE_LOOP_REF_H_ |
| 6 #define SERVICES_SHELL_PUBLIC_CPP_MESSAGE_LOOP_REF_H_ | 6 #define SERVICES_SHELL_PUBLIC_CPP_MESSAGE_LOOP_REF_H_ |
| 7 | 7 |
| 8 #include <memory> |
| 9 |
| 8 #include "base/macros.h" | 10 #include "base/macros.h" |
| 9 #include "base/memory/scoped_ptr.h" | |
| 10 #include "base/message_loop/message_loop.h" | 11 #include "base/message_loop/message_loop.h" |
| 11 #include "mojo/public/cpp/system/core.h" | 12 #include "mojo/public/cpp/system/core.h" |
| 12 | 13 |
| 13 namespace mojo { | 14 namespace shell { |
| 14 | 15 |
| 15 class MessageLoopRefImpl; | 16 class MessageLoopRefImpl; |
| 16 | 17 |
| 17 // 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 |
| 18 // hold a reference to the ShellConnection, keeping it alive as long as the | 19 // hold a reference to the ShellConnection, keeping it alive as long as the |
| 19 // bound implementation exists. | 20 // bound implementation exists. |
| 20 // Since interface implementations can be bound on different threads than the | 21 // Since interface implementations can be bound on different threads than the |
| 21 // ShellConnection, this class is safe to use on any thread. However, each | 22 // ShellConnection, this class is safe to use on any thread. However, each |
| 22 // instance should only be used on one thread at a time (otherwise there'll be | 23 // instance should only be used on one thread at a time (otherwise there'll be |
| 23 // races between the AddRef resulting from cloning and destruction). | 24 // races between the AddRef resulting from cloning and destruction). |
| 24 class MessageLoopRef { | 25 class MessageLoopRef { |
| 25 public: | 26 public: |
| 26 virtual ~MessageLoopRef() {} | 27 virtual ~MessageLoopRef() {} |
| 27 | 28 |
| 28 virtual scoped_ptr<MessageLoopRef> Clone() = 0; | 29 virtual std::unique_ptr<MessageLoopRef> Clone() = 0; |
| 29 }; | 30 }; |
| 30 | 31 |
| 31 class MessageLoopRefFactory { | 32 class MessageLoopRefFactory { |
| 32 public: | 33 public: |
| 33 MessageLoopRefFactory(); | 34 MessageLoopRefFactory(); |
| 34 ~MessageLoopRefFactory(); | 35 ~MessageLoopRefFactory(); |
| 35 | 36 |
| 36 void set_quit_closure(const base::Closure& quit_closure) { | 37 void set_quit_closure(const base::Closure& quit_closure) { |
| 37 quit_closure_ = quit_closure; | 38 quit_closure_ = quit_closure; |
| 38 } | 39 } |
| 39 | 40 |
| 40 scoped_ptr<MessageLoopRef> CreateRef(); | 41 std::unique_ptr<MessageLoopRef> CreateRef(); |
| 41 | 42 |
| 42 private: | 43 private: |
| 43 friend MessageLoopRefImpl; | 44 friend MessageLoopRefImpl; |
| 44 | 45 |
| 45 // Called from MessageLoopRefImpl. | 46 // Called from MessageLoopRefImpl. |
| 46 void AddRef(); | 47 void AddRef(); |
| 47 void Release(); | 48 void Release(); |
| 48 | 49 |
| 49 base::Closure quit_closure_; | 50 base::Closure quit_closure_; |
| 50 int ref_count_ = 0; | 51 int ref_count_ = 0; |
| 51 | 52 |
| 52 DISALLOW_COPY_AND_ASSIGN(MessageLoopRefFactory); | 53 DISALLOW_COPY_AND_ASSIGN(MessageLoopRefFactory); |
| 53 }; | 54 }; |
| 54 | 55 |
| 55 } // namespace mojo | 56 } // namespace shell |
| 56 | 57 |
| 57 #endif // SERVICES_SHELL_PUBLIC_CPP_MESSAGE_LOOP_REF_H_ | 58 #endif // SERVICES_SHELL_PUBLIC_CPP_MESSAGE_LOOP_REF_H_ |
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