| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_RENDERER_RENDERER_HISTOGRAM_SNAPSHOTS_H_ |
| #define CHROME_RENDERER_RENDERER_HISTOGRAM_SNAPSHOTS_H_ |
| #pragma once |
| |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/metrics/histogram.h" |
| #include "base/process.h" |
| #include "chrome/common/metrics/histogram_sender.h" |
| #include "content/public/renderer/render_process_observer.h" |
| |
| class RendererHistogramSnapshots : public HistogramSender, |
| public content::RenderProcessObserver { |
| public: |
| RendererHistogramSnapshots(); |
| virtual ~RendererHistogramSnapshots(); |
| |
| // Send the histogram data. |
| void SendHistograms(int sequence_number); |
| |
| private: |
| // RenderProcessObserver implementation. |
| virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE; |
| |
| void OnGetRendererHistograms(int sequence_number); |
| |
| // Maintain a map of histogram names to the sample stats we've sent. |
| typedef std::map<std::string, base::Histogram::SampleSet> LoggedSampleMap; |
| typedef std::vector<std::string> HistogramPickledList; |
| |
| // Extract snapshot data and then send it off the the Browser process. |
| // Send only a delta to what we have already sent. |
| void UploadAllHistrograms(int sequence_number); |
| |
| base::WeakPtrFactory<RendererHistogramSnapshots> weak_factory_; |
| |
| // HistogramSender interface (override) methods. |
| virtual void TransmitHistogramDelta( |
| const base::Histogram& histogram, |
| const base::Histogram::SampleSet& snapshot) OVERRIDE; |
| virtual void InconsistencyDetected(int problem) OVERRIDE; |
| virtual void UniqueInconsistencyDetected(int problem) OVERRIDE; |
| virtual void SnapshotProblemResolved(int amount) OVERRIDE; |
| |
| // Collection of histograms to send to the browser. |
| HistogramPickledList pickled_histograms_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RendererHistogramSnapshots); |
| }; |
| |
| #endif // CHROME_RENDERER_RENDERER_HISTOGRAM_SNAPSHOTS_H_ |