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// 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.
#ifndef DEBUGD_SRC_PERF_TOOL_H_
#define DEBUGD_SRC_PERF_TOOL_H_
#include <stdint.h>
#include <sys/utsname.h>
#include <memory>
#include <string>
#include <vector>
#include <base/files/scoped_file.h>
#include <base/macros.h>
#include <base/optional.h>
#include <brillo/asynchronous_signal_handler.h>
#include <brillo/errors/error.h>
#include <brillo/process/process_reaper.h>
#include "debugd/src/sandboxed_process.h"
namespace debugd {
class PerfTool {
public:
PerfTool();
PerfTool(const PerfTool&) = delete;
PerfTool& operator=(const PerfTool&) = delete;
~PerfTool() = default;
// Runs the perf tool with the request command for |duration_secs| seconds
// and returns either a perf_data or perf_stat protobuf in serialized form.
bool GetPerfOutput(uint32_t duration_secs,
const std::vector<std::string>& perf_args,
std::vector<uint8_t>* perf_data,
std::vector<uint8_t>* perf_stat,
int32_t* status,
brillo::ErrorPtr* error);
// Runs the perf tool with the request command for |duration_secs| seconds
// and returns either a perf_data or perf_stat protobuf in serialized form
// over the passed stdout_fd file descriptor, or nothing if there was an
// error. |session_id| is returned to the client to optionally stop the perf
// tool before it runs for the full duration.
bool GetPerfOutputFd(uint32_t duration_secs,
const std::vector<std::string>& perf_args,
const base::ScopedFD& stdout_fd,
uint64_t* session_id,
brillo::ErrorPtr* error);
// Stops the perf tool that was previously launched using GetPerfOutputFd()
// and gathers perf output right away.
bool StopPerf(uint64_t session_id, brillo::ErrorPtr* error);
private:
void OnQuipperProcessExited(const siginfo_t& siginfo);
base::Optional<uint64_t> profiler_session_id_;
std::unique_ptr<SandboxedProcess> quipper_process_;
base::ScopedFD quipper_process_output_fd_;
brillo::AsynchronousSignalHandler signal_handler_;
brillo::ProcessReaper process_reaper_;
};
} // namespace debugd
#endif // DEBUGD_SRC_PERF_TOOL_H_