1// Copyright (c) 2012 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_BROWSER_PROFILER_CONTROLLER_IMPL_H_
6#define CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
7
8#include "base/memory/singleton.h"
9#include "base/process/process.h"
10#include "content/common/content_export.h"
11#include "content/public/browser/profiler_controller.h"
12#include "content/public/common/process_type.h"
13
14namespace tracked_objects {
15struct ProcessDataSnapshot;
16}
17
18namespace content {
19
20// ProfilerController's implementation.
21class ProfilerControllerImpl : public ProfilerController {
22 public:
23  static ProfilerControllerImpl* GetInstance();
24
25  // Normally instantiated when the child process is launched. Only one instance
26  // should be created per process.
27  ProfilerControllerImpl();
28  virtual ~ProfilerControllerImpl();
29
30  // Notify the |subscriber_| that it should expect at least |pending_processes|
31  // additional calls to OnProfilerDataCollected().  OnPendingProcess() may be
32  // called repeatedly; the last call will have |end| set to true, indicating
33  // that there is no longer a possibility for the count of pending processes to
34  // increase.  This is called on the UI thread.
35  void OnPendingProcesses(int sequence_number, int pending_processes, bool end);
36
37  // Send the |profiler_data| back to the |subscriber_|.
38  // This can be called from any thread.
39  void OnProfilerDataCollected(
40      int sequence_number,
41      const tracked_objects::ProcessDataSnapshot& profiler_data,
42      int process_type);
43
44  // ProfilerController implementation:
45  virtual void Register(ProfilerSubscriber* subscriber) OVERRIDE;
46  virtual void Unregister(const ProfilerSubscriber* subscriber) OVERRIDE;
47  virtual void GetProfilerData(int sequence_number) OVERRIDE;
48
49 private:
50  friend struct DefaultSingletonTraits<ProfilerControllerImpl>;
51
52  // Contact child processes and get their profiler data.
53  void GetProfilerDataFromChildProcesses(int sequence_number);
54
55  ProfilerSubscriber* subscriber_;
56
57  DISALLOW_COPY_AND_ASSIGN(ProfilerControllerImpl);
58};
59
60}  // namespace content
61
62#endif  // CONTENT_BROWSER_PROFILER_CONTROLLER_IMPL_H_
63