webrtc_logging_message_filter.h revision 7dbb3d5cf0c15f500944d211057644d6a2f37371 
1// Copyright 2013 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_RENDERER_MEDIA_WEBRTC_LOGGING_MESSAGE_FILTER_H_
6#define CHROME_RENDERER_MEDIA_WEBRTC_LOGGING_MESSAGE_FILTER_H_
7
8#include "base/memory/shared_memory.h"
9#include "ipc/ipc_channel_proxy.h"
10
11namespace base {
12class MessageLoopProxy;
13}
14
15class ChromeWebRtcLogMessageDelegate;
16
17// Filter for WebRTC logging messages. Sits between
18// ChromeWebRtcLogMessageDelegate (renderer process) and
19// WebRtcLoggingHandlerHost (browser process). Must be called on the IO thread.
20class WebRtcLoggingMessageFilter
21    : public IPC::ChannelProxy::MessageFilter {
22 public:
23  explicit WebRtcLoggingMessageFilter(
24      const scoped_refptr<base::MessageLoopProxy>& io_message_loop);
25
26  virtual void InitLogging(const std::string& app_session_id,
27                           const std::string& app_url);
28
29  const scoped_refptr<base::MessageLoopProxy>& io_message_loop() {
30    return io_message_loop_;
31  }
32
33 protected:
34  virtual ~WebRtcLoggingMessageFilter();
35
36 private:
37  // IPC::ChannelProxy::MessageFilter implementation.
38  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
39  virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
40  virtual void OnFilterRemoved() OVERRIDE;
41  virtual void OnChannelClosing() OVERRIDE;
42
43  void CreateLoggingHandler();
44
45  void OnLogOpened(base::SharedMemoryHandle handle, uint32 length);
46  void OnOpenLogFailed();
47
48  void Send(IPC::Message* message);
49
50  // Owned by this class. The only other pointer to it is in libjingle's logging
51  // file. That's a global pointer used on different threads, so we will leak
52  // this object when we go away to ensure that it outlives any log messages
53  // coming from libjingle.
54  ChromeWebRtcLogMessageDelegate* log_message_delegate_;
55
56  scoped_refptr<base::MessageLoopProxy> io_message_loop_;
57
58  IPC::Channel* channel_;
59
60  DISALLOW_COPY_AND_ASSIGN(WebRtcLoggingMessageFilter);
61};
62
63#endif  // CHROME_RENDERER_MEDIA_WEBRTC_LOGGING_MESSAGE_FILTER_H_
64