| // 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. |
| |
| #include "content/child/child_histogram_message_filter.h" |
| |
| #include <ctype.h> |
| |
| #include "base/bind.h" |
| #include "base/message_loop/message_loop.h" |
| #include "base/metrics/histogram_delta_serialization.h" |
| #include "content/child/child_process.h" |
| #include "content/child/child_thread.h" |
| #include "content/common/child_process_messages.h" |
| |
| namespace content { |
| |
| ChildHistogramMessageFilter::ChildHistogramMessageFilter() |
| : channel_(NULL), |
| io_message_loop_(ChildProcess::current()->io_message_loop_proxy()) { |
| } |
| |
| ChildHistogramMessageFilter::~ChildHistogramMessageFilter() { |
| } |
| |
| void ChildHistogramMessageFilter::OnFilterAdded(IPC::Channel* channel) { |
| channel_ = channel; |
| } |
| |
| void ChildHistogramMessageFilter::OnFilterRemoved() { |
| } |
| |
| bool ChildHistogramMessageFilter::OnMessageReceived( |
| const IPC::Message& message) { |
| bool handled = true; |
| IPC_BEGIN_MESSAGE_MAP(ChildHistogramMessageFilter, message) |
| IPC_MESSAGE_HANDLER(ChildProcessMsg_GetChildHistogramData, |
| OnGetChildHistogramData) |
| IPC_MESSAGE_UNHANDLED(handled = false) |
| IPC_END_MESSAGE_MAP() |
| return handled; |
| } |
| |
| void ChildHistogramMessageFilter::SendHistograms(int sequence_number) { |
| io_message_loop_->PostTask( |
| FROM_HERE, base::Bind(&ChildHistogramMessageFilter::UploadAllHistograms, |
| this, sequence_number)); |
| } |
| |
| void ChildHistogramMessageFilter::OnGetChildHistogramData(int sequence_number) { |
| UploadAllHistograms(sequence_number); |
| } |
| |
| void ChildHistogramMessageFilter::UploadAllHistograms(int sequence_number) { |
| if (!histogram_delta_serialization_) { |
| histogram_delta_serialization_.reset( |
| new base::HistogramDeltaSerialization("ChildProcess")); |
| } |
| |
| std::vector<std::string> deltas; |
| histogram_delta_serialization_->PrepareAndSerializeDeltas(&deltas); |
| channel_->Send( |
| new ChildProcessHostMsg_ChildHistogramData(sequence_number, deltas)); |
| |
| static int count = 0; |
| count++; |
| DHISTOGRAM_COUNTS("Histogram.ChildProcessHistogramSentCount", count); |
| } |
| |
| } // namespace content |