content/public/browser/profiler_subscriber.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_PUBLIC_BROWSER_PROFILER_SUBSCRIBER_H_
   6 #define CONTENT_PUBLIC_BROWSER_PROFILER_SUBSCRIBER_H_
   7
   8 #include "content/common/content_export.h"
   9 #include "content/public/common/process_type.h"
  10
  11 namespace tracked_objects {
  12 struct ProcessDataSnapshot;
  13 }
  14
  15 namespace content {
  16
  17 // Objects interested in receiving profiler data derive from ProfilerSubscriber.
  18 class CONTENT_EXPORT ProfilerSubscriber {
  19  public:
  20   // Send number of pending processes to subscriber. |end| is set to true if it
  21   // is the last time. This is called on the UI thread.
  22   virtual void OnPendingProcesses(int sequence_number,
  23                                   int pending_processes,
  24                                   bool end) = 0;
  25
  26   // Send |profiler_data| back to subscriber.
  27   // This is called on the UI thread.
  28   virtual void OnProfilerDataCollected(
  29       int sequence_number,
  30       const tracked_objects::ProcessDataSnapshot& profiler_data,
  31       content::ProcessType process_type) = 0;
  32
  33  protected:
  34   virtual ~ProfilerSubscriber() {}
  35 };
  36
  37 }  // namespace content
  38
  39 #endif  // CONTENT_PUBLIC_BROWSER_PROFILER_SUBSCRIBER_H_