1 files changed, 66 insertions, 0 deletions
diff --git a/tools/profiler/public/ChildProfilerController.h b/tools/profiler/public/ChildProfilerController.h
new file mode 100644
index 0000000000..5a020c331b
--- /dev/null
+++ b/tools/profiler/public/ChildProfilerController.h
@@ -0,0 +1,66 @@
+/* -*- 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"
+
+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]] nsCString GrabShutdownProfileAndShutdown();
+  void Shutdown();
+
+ private:
+  ChildProfilerController();
+  ~ChildProfilerController();
+  void Init(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+  void ShutdownAndMaybeGrabShutdownProfileFirst(nsCString* aOutShutdownProfile);
+
+  // Called on mThread:
+  void SetupProfilerChild(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+  void ShutdownProfilerChild(nsCString* aOutShutdownProfile);
+
+  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]] nsCString GrabShutdownProfileAndShutdown() {
+    return EmptyCString();
+  }
+  void Shutdown() {}
+
+ private:
+  ~ChildProfilerController() {}
+#endif  // MOZ_GECKO_PROFILER
+};
+
+}  // namespace mozilla
+
+#endif  // ChildProfilerController_h