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| 1 // Copyright (c) 2009 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 CHROME_BROWSER_WORKER_HOST_MESSAGE_PORT_DISPATCHER_H_ | |
| 6 #define CHROME_BROWSER_WORKER_HOST_MESSAGE_PORT_DISPATCHER_H_ | |
| 7 #pragma once | |
| 8 | |
| 9 #include <map> | |
| 10 #include <utility> | |
| 11 #include <vector> | |
| 12 | |
| 13 #include "base/basictypes.h" | |
| 14 #include "base/callback.h" | |
| 15 #include "base/singleton.h" | |
| 16 #include "base/string16.h" | |
| 17 #include "base/task.h" | |
| 18 #include "chrome/common/notification_observer.h" | |
| 19 #include "chrome/common/notification_registrar.h" | |
| 20 #include "ipc/ipc_message.h" | |
| 21 | |
| 22 class MessagePortDispatcher : public NotificationObserver { | |
| 23 public: | |
| 24 typedef std::vector<std::pair<string16, std::vector<int> > > QueuedMessages; | |
| 25 | |
| 26 // Returns the MessagePortDispatcher singleton. | |
| 27 static MessagePortDispatcher* GetInstance(); | |
| 28 | |
| 29 bool OnMessageReceived(const IPC::Message& message, | |
| 30 IPC::Message::Sender* sender, | |
| 31 CallbackWithReturnValue<int>::Type* next_routing_id, | |
| 32 bool* message_was_ok); | |
| 33 | |
| 34 // Updates the information needed to reach a message port when it's sent to a | |
| 35 // (possibly different) process. | |
| 36 void UpdateMessagePort( | |
| 37 int message_port_id, | |
| 38 IPC::Message::Sender* sender, | |
| 39 int routing_id, | |
| 40 CallbackWithReturnValue<int>::Type* next_routing_id); | |
| 41 | |
| 42 // Attempts to send the queued messages for a message port. | |
| 43 void SendQueuedMessagesIfPossible(int message_port_id); | |
| 44 | |
| 45 bool Send(IPC::Message* message); | |
| 46 | |
| 47 private: | |
| 48 friend struct DefaultSingletonTraits<MessagePortDispatcher>; | |
| 49 | |
| 50 MessagePortDispatcher(); | |
| 51 ~MessagePortDispatcher(); | |
| 52 | |
| 53 // Message handlers. | |
| 54 void OnCreate(int* route_id, int* message_port_id); | |
| 55 void OnDestroy(int message_port_id); | |
| 56 void OnEntangle(int local_message_port_id, int remote_message_port_id); | |
| 57 void OnPostMessage(int sender_message_port_id, | |
| 58 const string16& message, | |
| 59 const std::vector<int>& sent_message_port_ids); | |
| 60 void OnQueueMessages(int message_port_id); | |
| 61 void OnSendQueuedMessages(int message_port_id, | |
| 62 const QueuedMessages& queued_messages); | |
| 63 | |
| 64 void PostMessageTo(int message_port_id, | |
| 65 const string16& message, | |
| 66 const std::vector<int>& sent_message_port_ids); | |
| 67 | |
| 68 // NotificationObserver interface. | |
| 69 virtual void Observe(NotificationType type, | |
| 70 const NotificationSource& source, | |
| 71 const NotificationDetails& details); | |
| 72 | |
| 73 // Handles the details of removing a message port id. Before calling this, | |
| 74 // verify that the message port id exists. | |
| 75 void Erase(int message_port_id); | |
| 76 | |
| 77 struct MessagePort; | |
| 78 typedef std::map<int, MessagePort> MessagePorts; | |
| 79 MessagePorts message_ports_; | |
| 80 | |
| 81 // We need globally unique identifiers for each message port. | |
| 82 int next_message_port_id_; | |
| 83 | |
| 84 // Valid only during IPC message dispatching. | |
| 85 IPC::Message::Sender* sender_; | |
| 86 CallbackWithReturnValue<int>::Type* next_routing_id_; | |
| 87 | |
| 88 NotificationRegistrar registrar_; | |
| 89 | |
| 90 DISALLOW_COPY_AND_ASSIGN(MessagePortDispatcher); | |
| 91 }; | |
| 92 | |
| 93 #endif // CHROME_BROWSER_WORKER_HOST_MESSAGE_PORT_DISPATCHER_H_ | |
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Chromium Code Reviews
Issue 6055002:
Create a message filter for message port messages. This allows a nice cleanu... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/