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// Copyright (c) 2011 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/bind.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/metrics/histogram.h"
#include "chrome/common/render_messages.h"
#include "content/public/renderer/render_thread.h"
// TODO(raman): Before renderer shuts down send final snapshot lists.
using base::Histogram;
using base::StatisticsRecorder;
using content::RenderThread;
RendererHistogramSnapshots::RendererHistogramSnapshots()
: ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
}
RendererHistogramSnapshots::~RendererHistogramSnapshots() {
}
// Send data quickly!
void RendererHistogramSnapshots::SendHistograms(int sequence_number) {
RenderThread::Get()->GetMessageLoop()->PostTask(
FROM_HERE, base::Bind(&RendererHistogramSnapshots::UploadAllHistrograms,
weak_factory_.GetWeakPtr(), sequence_number));
}
bool RendererHistogramSnapshots::OnControlMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(RendererHistogramSnapshots, message)
IPC_MESSAGE_HANDLER(ChromeViewMsg_GetRendererHistograms,
OnGetRendererHistograms)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void RendererHistogramSnapshots::OnGetRendererHistograms(int sequence_number) {
SendHistograms(sequence_number);
}
void RendererHistogramSnapshots::UploadAllHistrograms(int sequence_number) {
DCHECK_EQ(0u, pickled_histograms_.size());
StatisticsRecorder::CollectHistogramStats("Renderer");
// 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::Get()->Send(new ChromeViewHostMsg_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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