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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 CHROME_COMMON_CHILD_PROCESS_HOST_H_ | 5 #ifndef CHROME_COMMON_CHILD_PROCESS_HOST_H_ |
6 #define CHROME_COMMON_CHILD_PROCESS_HOST_H_ | 6 #define CHROME_COMMON_CHILD_PROCESS_HOST_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <string> | 9 #include <string> |
10 #include <vector> | 10 #include <vector> |
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73 // Does not check if CanShutdown is true. | 73 // Does not check if CanShutdown is true. |
74 virtual void ForceShutdown(); | 74 virtual void ForceShutdown(); |
75 | 75 |
76 // Creates the IPC channel. Returns true iff it succeeded. | 76 // Creates the IPC channel. Returns true iff it succeeded. |
77 virtual bool CreateChannel(); | 77 virtual bool CreateChannel(); |
78 | 78 |
79 // Notifies us that an instance has been created on this child process. | 79 // Notifies us that an instance has been created on this child process. |
80 virtual void InstanceCreated(); | 80 virtual void InstanceCreated(); |
81 | 81 |
82 // IPC::Channel::Listener implementation: | 82 // IPC::Channel::Listener implementation: |
83 virtual void OnMessageReceived(const IPC::Message& msg) { } | 83 virtual bool OnMessageReceived(const IPC::Message& msg) { return false; } |
84 virtual void OnChannelConnected(int32 peer_pid) { } | 84 virtual void OnChannelConnected(int32 peer_pid) { } |
85 virtual void OnChannelError() { } | 85 virtual void OnChannelError() { } |
86 | 86 |
87 bool opening_channel() { return opening_channel_; } | 87 bool opening_channel() { return opening_channel_; } |
88 const std::string& channel_id() { return channel_id_; } | 88 const std::string& channel_id() { return channel_id_; } |
89 IPC::Channel* channel() { return channel_.get(); } | 89 IPC::Channel* channel() { return channel_.get(); } |
90 | 90 |
91 // Called when the child process goes away. | 91 // Called when the child process goes away. |
92 virtual void OnChildDied(); | 92 virtual void OnChildDied(); |
93 // Notifies the derived class that we told the child process to kill itself. | 93 // Notifies the derived class that we told the child process to kill itself. |
94 virtual void ShutdownStarted() { } | 94 virtual void ShutdownStarted() { } |
95 // Subclasses can implement specific notification methods. | 95 // Subclasses can implement specific notification methods. |
96 virtual void Notify(NotificationType type) { } | 96 virtual void Notify(NotificationType type) { } |
97 | 97 |
98 private: | 98 private: |
99 // By using an internal class as the IPC::Channel::Listener, we can intercept | 99 // By using an internal class as the IPC::Channel::Listener, we can intercept |
100 // OnMessageReceived/OnChannelConnected and do our own processing before | 100 // OnMessageReceived/OnChannelConnected and do our own processing before |
101 // calling the subclass' implementation. | 101 // calling the subclass' implementation. |
102 class ListenerHook : public IPC::Channel::Listener { | 102 class ListenerHook : public IPC::Channel::Listener { |
103 public: | 103 public: |
104 explicit ListenerHook(ChildProcessHost* host); | 104 explicit ListenerHook(ChildProcessHost* host); |
105 virtual void OnMessageReceived(const IPC::Message& msg); | 105 virtual bool OnMessageReceived(const IPC::Message& msg); |
106 virtual void OnChannelConnected(int32 peer_pid); | 106 virtual void OnChannelConnected(int32 peer_pid); |
107 virtual void OnChannelError(); | 107 virtual void OnChannelError(); |
108 private: | 108 private: |
109 ChildProcessHost* host_; | 109 ChildProcessHost* host_; |
110 }; | 110 }; |
111 | 111 |
112 ListenerHook listener_; | 112 ListenerHook listener_; |
113 | 113 |
114 bool opening_channel_; // True while we're waiting the channel to be opened. | 114 bool opening_channel_; // True while we're waiting the channel to be opened. |
115 scoped_ptr<IPC::Channel> channel_; | 115 scoped_ptr<IPC::Channel> channel_; |
116 std::string channel_id_; | 116 std::string channel_id_; |
117 | 117 |
118 // Holds all the IPC message filters. Since this object lives on the IO | 118 // Holds all the IPC message filters. Since this object lives on the IO |
119 // thread, we don't have a IPC::ChannelProxy and so we manage filters | 119 // thread, we don't have a IPC::ChannelProxy and so we manage filters |
120 // manually. | 120 // manually. |
121 std::vector<scoped_refptr<IPC::ChannelProxy::MessageFilter> > filters_; | 121 std::vector<scoped_refptr<IPC::ChannelProxy::MessageFilter> > filters_; |
122 | 122 |
123 DISALLOW_COPY_AND_ASSIGN(ChildProcessHost); | 123 DISALLOW_COPY_AND_ASSIGN(ChildProcessHost); |
124 }; | 124 }; |
125 | 125 |
126 #endif // CHROME_COMMON_CHILD_PROCESS_HOST_H_ | 126 #endif // CHROME_COMMON_CHILD_PROCESS_HOST_H_ |
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