src/performance/experimental/profiler/profiler_controller_impl.h

// Copyright 2023 The Fuchsia 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 SRC_PERFORMANCE_EXPERIMENTAL_PROFILER_PROFILER_CONTROLLER_IMPL_H_
#define SRC_PERFORMANCE_EXPERIMENTAL_PROFILER_PROFILER_CONTROLLER_IMPL_H_

#include <fcntl.h>
#include <fidl/fuchsia.cpu.profiler/cpp/fidl.h>
#include <lib/zx/process.h>
#include <lib/zx/task.h>
#include <lib/zx/thread.h>
#include <zircon/compiler.h>

#include "component.h"
#include "sampler.h"
#include "targets.h"

namespace profiler {
class ProfilerControllerImpl : public fidl::Server<fuchsia_cpu_profiler::Session> {
 public:
  explicit ProfilerControllerImpl(async_dispatcher_t* dispatcher) : dispatcher_(dispatcher) {}
  void Configure(ConfigureRequest& request, ConfigureCompleter::Sync& completer) override;
  void Start(StartRequest& request, StartCompleter::Sync& completer) override;
  void Stop(StopCompleter::Sync& completer) override;
  void Reset(ResetCompleter::Sync& completer) override;

  void OnUnbound(fidl::UnbindInfo info, fidl::ServerEnd<fuchsia_cpu_profiler::Session> server_end);

  ~ProfilerControllerImpl() override = default;

 private:
  void Reset();
  zx::socket socket_;

  enum ProfilingState {
    Unconfigured,
    Running,
    Stopped,
  };
  async_dispatcher_t* dispatcher_;
  std::unique_ptr<Sampler> sampler_;
  ProfilingState state_ = ProfilingState::Unconfigured;

  TargetTree targets_;
  std::vector<fuchsia_cpu_profiler::SamplingConfig> sample_specs_;
  std::unique_ptr<Component> component_target_;
};
}  // namespace profiler

#endif  // SRC_PERFORMANCE_EXPERIMENTAL_PROFILER_PROFILER_CONTROLLER_IMPL_H_