| // Copyright (c) 2012 The Chromium OS 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 "chromiumos-wide-profiling/perf_recorder.h" |
| |
| #include <cstdio> |
| #include <cstring> |
| #include <sstream> |
| #include <vector> |
| |
| #include "chromiumos-wide-profiling/perf_serializer.h" |
| #include "chromiumos-wide-profiling/quipper_string.h" |
| #include "chromiumos-wide-profiling/scoped_temp_path.h" |
| #include "chromiumos-wide-profiling/utils.h" |
| |
| namespace quipper { |
| |
| string PerfRecorder::GetSleepCommand(const int time) { |
| stringstream ss; |
| ss << "sleep " << time; |
| return ss.str(); |
| } |
| |
| bool PerfRecorder::RecordAndConvertToProtobuf( |
| const string& perf_command, |
| const int time, |
| quipper::PerfDataProto* perf_data) { |
| ScopedTempFile output_file; |
| string full_perf_command = perf_command + " -o " + output_file.path() + |
| " -- " + GetSleepCommand(time); |
| |
| // The perf command writes the output to a file. |stdout_data| is just a dummy |
| // container so we have something to pass to RunCommandAndGetStdout(). |
| std::vector<char> stdout_data; |
| RunCommandAndGetStdout(full_perf_command, &stdout_data); |
| |
| // Now convert it into a protobuf. |
| PerfSerializer perf_serializer; |
| PerfSerializer::Options options; |
| // Make sure to remap address for security reasons. |
| options.do_remap = true; |
| // Discard unused perf events to reduce the protobuf size. |
| options.discard_unused_events = true; |
| |
| perf_serializer.set_options(options); |
| |
| return perf_serializer.SerializeFromFile(output_file.path(), perf_data); |
| } |
| |
| } // namespace quipper |