// Copyright (c) 2006-2008 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_HISTOGRAM_SNAPSHOTS_H_ #define CHROME_RENDERER_HISTOGRAM_SNAPSHOTS_H_ #include <list> #include <map> #include <set> #include <string> #include <vector> #include "base/basictypes.h" #include "base/histogram.h" #include "base/process.h" #include "base/scoped_ptr.h" #include "base/task.h" class RendererHistogramSnapshots { public: RendererHistogramSnapshots(); ~RendererHistogramSnapshots() {} // Send the histogram data. void SendHistograms(); // Maintain a map of histogram names to the sample stats we've sent. typedef std::map<std::string, Histogram::SampleSet> LoggedSampleMap; typedef std::vector<std::string> HistogramPickledList; private: // Extract snapshot data and then send it off the the Browser process. // Send only a delta to what we have already sent. void UploadAllHistrograms(); void UploadHistrogram(const Histogram& histogram, HistogramPickledList* histograms); void UploadHistogramDelta(const Histogram& histogram, const Histogram::SampleSet& snapshot, HistogramPickledList* histograms); ScopedRunnableMethodFactory<RendererHistogramSnapshots> renderer_histogram_snapshots_factory_; // For histograms, record what we've already logged (as a sample for each // histogram) so that we can send only the delta with the next log. LoggedSampleMap logged_samples_; DISALLOW_COPY_AND_ASSIGN(RendererHistogramSnapshots); }; #endif // CHROME_RENDERER_HISTOGRAM_SNAPSHOTS_H_