Refactoring: Move MessagePort-related IPCs and handling them away from Worker-related classes.
MessagePorts can also be used by non-workers.
This is part of a series of changes to fix cross-process MessagePorts. This CL
contains no functional changes.
BUG=278336
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=228448
Review URL: https://codereview.chromium.org/25299002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228662 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/message_port_service.h b/content/browser/message_port_service.h
new file mode 100644
index 0000000..55e536c
--- /dev/null
+++ b/content/browser/message_port_service.h
@@ -0,0 +1,78 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_MESSAGE_PORT_SERVICE_H_
+#define CONTENT_BROWSER_MESSAGE_PORT_SERVICE_H_
+
+#include <map>
+#include <utility>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/singleton.h"
+#include "base/strings/string16.h"
+#include "ipc/ipc_message.h"
+
+namespace content {
+class MessagePortMessageFilter;
+
+class MessagePortService {
+ public:
+ typedef std::vector<std::pair<string16, std::vector<int> > > QueuedMessages;
+
+ // Returns the MessagePortService singleton.
+ static MessagePortService* GetInstance();
+
+ // These methods correspond to the message port related IPCs.
+ void Create(int route_id,
+ MessagePortMessageFilter* filter,
+ int* message_port_id);
+ void Destroy(int message_port_id);
+ void Entangle(int local_message_port_id, int remote_message_port_id);
+ void PostMessage(int sender_message_port_id,
+ const string16& message,
+ const std::vector<int>& sent_message_port_ids);
+ void QueueMessages(int message_port_id);
+ void SendQueuedMessages(int message_port_id,
+ const QueuedMessages& queued_messages);
+
+ // Updates the information needed to reach a message port when it's sent to a
+ // (possibly different) process.
+ void UpdateMessagePort(
+ int message_port_id,
+ MessagePortMessageFilter* filter,
+ int routing_id);
+
+ void OnMessagePortMessageFilterClosing(MessagePortMessageFilter* filter);
+
+ // Attempts to send the queued messages for a message port.
+ void SendQueuedMessagesIfPossible(int message_port_id);
+
+ private:
+ friend struct DefaultSingletonTraits<MessagePortService>;
+
+ MessagePortService();
+ ~MessagePortService();
+
+ void PostMessageTo(int message_port_id,
+ const string16& message,
+ const std::vector<int>& sent_message_port_ids);
+
+ // Handles the details of removing a message port id. Before calling this,
+ // verify that the message port id exists.
+ void Erase(int message_port_id);
+
+ struct MessagePort;
+ typedef std::map<int, MessagePort> MessagePorts;
+ MessagePorts message_ports_;
+
+ // We need globally unique identifiers for each message port.
+ int next_message_port_id_;
+
+ DISALLOW_COPY_AND_ASSIGN(MessagePortService);
+};
+
+} // namespace content
+
+#endif // CONTENT_BROWSER_MESSAGE_PORT_SERVICE_H_
