Update To 11.40.268.0
[platform/framework/web/crosswalk.git] / src / content / browser / profiler_controller_impl.h
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
14 namespace tracked_objects {
15 struct ProcessDataSnapshot;
16 }
17
18 namespace content {
19
20 // ProfilerController's implementation.
21 class 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   ~ProfilerControllerImpl() override;
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   void Register(ProfilerSubscriber* subscriber) override;
46   void Unregister(const ProfilerSubscriber* subscriber) override;
47   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_