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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 IPC_IPC_MESSAGE_PIPE_READER_H_ | 5 #ifndef IPC_IPC_MESSAGE_PIPE_READER_H_ |
6 #define IPC_IPC_MESSAGE_PIPE_READER_H_ | 6 #define IPC_IPC_MESSAGE_PIPE_READER_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
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41 // The constructor automatically start listening on the pipe. | 41 // The constructor automatically start listening on the pipe. |
42 // | 42 // |
43 // All functions must be called on the IO thread, except for Send(), which can | 43 // All functions must be called on the IO thread, except for Send(), which can |
44 // be called on any thread. All |Delegate| functions will be called on the IO | 44 // be called on any thread. All |Delegate| functions will be called on the IO |
45 // thread. | 45 // thread. |
46 // | 46 // |
47 class IPC_EXPORT MessagePipeReader : public NON_EXPORTED_BASE(mojom::Channel) { | 47 class IPC_EXPORT MessagePipeReader : public NON_EXPORTED_BASE(mojom::Channel) { |
48 public: | 48 public: |
49 class Delegate { | 49 class Delegate { |
50 public: | 50 public: |
51 virtual void OnPeerPidReceived() = 0; | 51 virtual void OnPeerPidReceived(int32_t peer_pid) = 0; |
52 virtual void OnMessageReceived(const Message& message) = 0; | 52 virtual void OnMessageReceived(const Message& message) = 0; |
53 virtual void OnPipeError() = 0; | 53 virtual void OnPipeError() = 0; |
54 virtual void OnAssociatedInterfaceRequest( | 54 virtual void OnAssociatedInterfaceRequest( |
55 const std::string& name, | 55 const std::string& name, |
56 mojo::ScopedInterfaceEndpointHandle handle) = 0; | 56 mojo::ScopedInterfaceEndpointHandle handle) = 0; |
57 }; | 57 }; |
58 | 58 |
59 // Builds a reader that reads messages from |receive_handle| and lets | 59 // Builds a reader that reads messages from |receive_handle| and lets |
60 // |delegate| know. | 60 // |delegate| know. |
61 // | 61 // |
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79 bool IsValid() { return sender_; } | 79 bool IsValid() { return sender_; } |
80 | 80 |
81 // Sends an IPC::Message to the other end of the pipe. Safe to call from any | 81 // Sends an IPC::Message to the other end of the pipe. Safe to call from any |
82 // thread. | 82 // thread. |
83 bool Send(std::unique_ptr<Message> message); | 83 bool Send(std::unique_ptr<Message> message); |
84 | 84 |
85 // Requests an associated interface from the other end of the pipe. | 85 // Requests an associated interface from the other end of the pipe. |
86 void GetRemoteInterface(const std::string& name, | 86 void GetRemoteInterface(const std::string& name, |
87 mojo::ScopedInterfaceEndpointHandle handle); | 87 mojo::ScopedInterfaceEndpointHandle handle); |
88 | 88 |
89 base::ProcessId GetPeerPid() const { return peer_pid_; } | |
90 | |
91 mojom::Channel* sender() const { return sender_.get(); } | 89 mojom::Channel* sender() const { return sender_.get(); } |
92 | 90 |
93 protected: | 91 protected: |
94 void OnPipeClosed(); | 92 void OnPipeClosed(); |
95 void OnPipeError(MojoResult error); | 93 void OnPipeError(MojoResult error); |
96 | 94 |
97 private: | 95 private: |
98 // mojom::Channel: | 96 // mojom::Channel: |
99 void SetPeerPid(int32_t peer_pid) override; | 97 void SetPeerPid(int32_t peer_pid) override; |
100 void Receive( | 98 void Receive( |
101 const std::vector<uint8_t>& data, | 99 const std::vector<uint8_t>& data, |
102 base::Optional<std::vector<mojom::SerializedHandlePtr>> handles) override; | 100 base::Optional<std::vector<mojom::SerializedHandlePtr>> handles) override; |
103 void GetAssociatedInterface( | 101 void GetAssociatedInterface( |
104 const std::string& name, | 102 const std::string& name, |
105 mojom::GenericInterfaceAssociatedRequest request) override; | 103 mojom::GenericInterfaceAssociatedRequest request) override; |
106 | 104 |
107 // |delegate_| is null once the message pipe is closed. | 105 // |delegate_| is null once the message pipe is closed. |
108 Delegate* delegate_; | 106 Delegate* delegate_; |
109 base::ProcessId peer_pid_ = base::kNullProcessId; | |
110 mojom::ChannelAssociatedPtr sender_; | 107 mojom::ChannelAssociatedPtr sender_; |
111 mojo::AssociatedBinding<mojom::Channel> binding_; | 108 mojo::AssociatedBinding<mojom::Channel> binding_; |
112 base::ThreadChecker thread_checker_; | 109 base::ThreadChecker thread_checker_; |
113 | 110 |
114 DISALLOW_COPY_AND_ASSIGN(MessagePipeReader); | 111 DISALLOW_COPY_AND_ASSIGN(MessagePipeReader); |
115 }; | 112 }; |
116 | 113 |
117 } // namespace internal | 114 } // namespace internal |
118 } // namespace IPC | 115 } // namespace IPC |
119 | 116 |
120 #endif // IPC_IPC_MESSAGE_PIPE_READER_H_ | 117 #endif // IPC_IPC_MESSAGE_PIPE_READER_H_ |
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