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-rw-r--r--tools/profiler/public/ProfilerChild.h91
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+/* -*- 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/BaseProfilerDetail.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/PProfilerChild.h"
+#include "mozilla/ProfileBufferControlledChunkManager.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();
+
+ // This should be called regularly from outside of the profiler lock.
+ static void ProcessPendingUpdate();
+
+ static bool IsLockedOnCurrentThread();
+
+ 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 RecvPauseSampling() override;
+ mozilla::ipc::IPCResult RecvResumeSampling() override;
+ mozilla::ipc::IPCResult RecvAwaitNextChunkManagerUpdate(
+ AwaitNextChunkManagerUpdateResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvDestroyReleasedChunksAtOrBefore(
+ const TimeStamp& aTimeStamp) override;
+ mozilla::ipc::IPCResult RecvGatherProfile(
+ GatherProfileResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvClearAllPages() override;
+
+ void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;
+
+ FORWARD_SHMEM_ALLOCATOR_TO(PProfilerChild)
+
+ void SetupChunkManager();
+ void ResetChunkManager();
+ void ResolveChunkUpdate(
+ PProfilerChild::AwaitNextChunkManagerUpdateResolver& aResolve);
+ void ProcessChunkManagerUpdate(
+ ProfileBufferControlledChunkManager::Update&& aUpdate);
+
+ nsCOMPtr<nsIThread> mThread;
+ bool mDestroyed;
+
+ ProfileBufferControlledChunkManager* mChunkManager = nullptr;
+ AwaitNextChunkManagerUpdateResolver mAwaitNextChunkManagerUpdateResolver;
+ ProfileBufferControlledChunkManager::Update mChunkManagerUpdate;
+
+ struct ProfilerChildAndUpdate {
+ RefPtr<ProfilerChild> mProfilerChild;
+ ProfileBufferControlledChunkManager::Update mUpdate;
+ };
+ static DataMutexBase<ProfilerChildAndUpdate,
+ baseprofiler::detail::BaseProfilerMutex>
+ sPendingChunkManagerUpdate;
+};
+
+} // namespace mozilla
+
+#endif // ProfilerChild_h