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// Copyright (c) 2010 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.
#include "chrome/renderer/renderer_histogram_snapshots.h"
#include <ctype.h>
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/metrics/histogram.h"
#include "chrome/common/render_messages.h"
#include "chrome/renderer/render_process.h"
#include "chrome/renderer/render_thread.h"
// TODO(raman): Before renderer shuts down send final snapshot lists.
using base::Histogram;
using base::StatisticsRecorder;
RendererHistogramSnapshots::RendererHistogramSnapshots()
: ALLOW_THIS_IN_INITIALIZER_LIST(
renderer_histogram_snapshots_factory_(this)) {
}
RendererHistogramSnapshots::~RendererHistogramSnapshots() {
}
// Send data quickly!
void RendererHistogramSnapshots::SendHistograms(int sequence_number) {
RenderThread::current()->message_loop()->PostTask(FROM_HERE,
renderer_histogram_snapshots_factory_.NewRunnableMethod(
&RendererHistogramSnapshots::UploadAllHistrograms, sequence_number));
}
void RendererHistogramSnapshots::UploadAllHistrograms(int sequence_number) {
DCHECK_EQ(0u, pickled_histograms_.size());
// Push snapshots into our pickled_histograms_ vector.
TransmitAllHistograms(Histogram::kIPCSerializationSourceFlag, false);
// Send the sequence number and list of pickled histograms over synchronous
// IPC, so we can clear pickled_histograms_ afterwards.
RenderThread::current()->Send(
new ViewHostMsg_RendererHistograms(
sequence_number, pickled_histograms_));
pickled_histograms_.clear();
}
void RendererHistogramSnapshots::TransmitHistogramDelta(
const base::Histogram& histogram,
const base::Histogram::SampleSet& snapshot) {
DCHECK_NE(0, snapshot.TotalCount());
snapshot.CheckSize(histogram);
std::string histogram_info =
Histogram::SerializeHistogramInfo(histogram, snapshot);
pickled_histograms_.push_back(histogram_info);
}
void RendererHistogramSnapshots::InconsistencyDetected(int problem) {
UMA_HISTOGRAM_ENUMERATION("Histogram.InconsistenciesRenderer",
problem, Histogram::NEVER_EXCEEDED_VALUE);
}
void RendererHistogramSnapshots::UniqueInconsistencyDetected(int problem) {
UMA_HISTOGRAM_ENUMERATION("Histogram.InconsistenciesRendererUnique",
problem, Histogram::NEVER_EXCEEDED_VALUE);
}
void RendererHistogramSnapshots::SnapshotProblemResolved(int amount) {
UMA_HISTOGRAM_COUNTS("Histogram.InconsistentSnapshotRenderer",
std::abs(amount));
}
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