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-rw-r--r--tools/profiler/public/ChildProfilerController.h71
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 ChildProfilerController_h
+#define ChildProfilerController_h
+
+#include "base/process.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/RefPtr.h"
+#include "nsISupportsImpl.h"
+#include "nsStringFwd.h"
+#include "ProfileAdditionalInformation.h"
+
+namespace mozilla {
+
+class ProfilerChild;
+class PProfilerChild;
+class PProfilerParent;
+
+// ChildProfilerController manages the setup and teardown of ProfilerChild.
+// It's used on the main thread.
+// It manages a background thread that ProfilerChild runs on.
+class ChildProfilerController final {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ChildProfilerController)
+
+#ifdef MOZ_GECKO_PROFILER
+ static already_AddRefed<ChildProfilerController> Create(
+ mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+
+ [[nodiscard]] ProfileAndAdditionalInformation
+ GrabShutdownProfileAndShutdown();
+ void Shutdown();
+
+ private:
+ ChildProfilerController();
+ ~ChildProfilerController();
+ void Init(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+ void ShutdownAndMaybeGrabShutdownProfileFirst(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation);
+
+ // Called on mThread:
+ void SetupProfilerChild(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+ void ShutdownProfilerChild(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation);
+
+ RefPtr<ProfilerChild> mProfilerChild; // only accessed on mThread
+ DataMutex<RefPtr<nsIThread>> mThread;
+#else
+ static already_AddRefed<ChildProfilerController> Create(
+ mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint) {
+ return nullptr;
+ }
+ [[nodiscard]] ProfileAndAdditionalInformation
+ GrabShutdownProfileAndShutdown() {
+ return ProfileAndAdditionalInformation(std::move(EmptyCString()));
+ }
+ void Shutdown() {}
+
+ private:
+ ~ChildProfilerController() {}
+#endif // MOZ_GECKO_PROFILER
+};
+
+} // namespace mozilla
+
+#endif // ChildProfilerController_h