gecko-dev/tools/profiler/public/ProfilerChild.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef ProfilerChild_h
#define ProfilerChild_h

#include "mozilla/PProfilerChild.h"
#include "mozilla/RefPtr.h"

class nsIThread;

namespace mozilla {

// The ProfilerChild actor is created in all processes except for the main
// process. The corresponding ProfilerParent actor is created in the main
// process, and it will notify us about profiler state changes and request
// profiles from us.
class ProfilerChild final : public PProfilerChild,
                            public mozilla::ipc::IShmemAllocator {
  NS_INLINE_DECL_REFCOUNTING(ProfilerChild)

  ProfilerChild();

  // Collects and returns a profile.
  // This method can be used to grab a profile just before PProfiler is torn
  // down. The collected profile should then be sent through a different
  // message channel that is guaranteed to stay open long enough.
  nsCString GrabShutdownProfile();

  void Destroy();

 private:
  virtual ~ProfilerChild();

  mozilla::ipc::IPCResult RecvStart(const ProfilerInitParams& params) override;
  mozilla::ipc::IPCResult RecvEnsureStarted(
      const ProfilerInitParams& params) override;
  mozilla::ipc::IPCResult RecvStop() override;
  mozilla::ipc::IPCResult RecvPause() override;
  mozilla::ipc::IPCResult RecvResume() override;
  mozilla::ipc::IPCResult RecvGatherProfile(
      GatherProfileResolver&& aResolve) override;
  mozilla::ipc::IPCResult RecvClearAllPages() override;

  void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;

  FORWARD_SHMEM_ALLOCATOR_TO(PProfilerChild)

  nsCOMPtr<nsIThread> mThread;
  bool mDestroyed;
};

}  // namespace mozilla

#endif  // ProfilerChild_h