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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CONTENT_CHILD_PUSH_MESSAGING_PUSH_DISPATCHER_H_ | |
6 #define CONTENT_CHILD_PUSH_MESSAGING_PUSH_DISPATCHER_H_ | |
7 | |
8 #include <map> | |
9 | |
10 #include "base/macros.h" | |
11 #include "base/synchronization/lock.h" | |
12 #include "content/child/worker_thread_message_filter.h" | |
13 | |
14 namespace content { | |
15 | |
16 class PushDispatcher : public WorkerThreadMessageFilter { | |
17 public: | |
18 explicit PushDispatcher(ThreadSafeSender* thread_safe_sender); | |
19 | |
20 // Generates a process-unique new request id. Stores it in a map as key to | |
21 // |thread_id| and returns it. This method can be called on any thread. | |
22 // Note that the registration requests from document contexts do not go via | |
23 // this class and their request ids may overlap with the ones generated here. | |
24 int GenerateRequestId(int thread_id); | |
25 | |
26 protected: | |
27 ~PushDispatcher() override; | |
28 | |
29 private: | |
30 // WorkerThreadMessageFilter: | |
31 bool ShouldHandleMessage(const IPC::Message& msg) const override; | |
32 void OnFilteredMessageReceived(const IPC::Message& msg) override; | |
33 bool GetWorkerThreadIdForMessage(const IPC::Message& msg, | |
34 int* ipc_thread_id) override; | |
35 | |
36 base::Lock request_id_map_lock_; | |
37 std::map<int, int> request_id_map_; // Maps request id to thread id. | |
38 int next_request_id_; | |
39 | |
40 DISALLOW_COPY_AND_ASSIGN(PushDispatcher); | |
41 }; | |
42 | |
43 } // namespace content | |
44 | |
45 #endif // CONTENT_CHILD_PUSH_MESSAGING_PUSH_DISPATCHER_H_ | |
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