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-rw-r--r--gfx/layers/ipc/CompositorThread.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/gfx/layers/ipc/CompositorThread.h b/gfx/layers/ipc/CompositorThread.h
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+++ b/gfx/layers/ipc/CompositorThread.h
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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 mozilla_layers_CompositorThread_h
+#define mozilla_layers_CompositorThread_h
+
+#include "nsISupportsImpl.h"
+#include "nsIThread.h"
+
+namespace mozilla::baseprofiler {
+class BaseProfilerThreadId;
+}
+using ProfilerThreadId = mozilla::baseprofiler::BaseProfilerThreadId;
+class nsISerialEventTarget;
+class nsIThread;
+
+namespace mozilla {
+namespace layers {
+
+class CompositorThreadHolder final {
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_DELETE_ON_MAIN_THREAD(
+ CompositorThreadHolder)
+
+ public:
+ CompositorThreadHolder();
+
+ nsISerialEventTarget* GetCompositorThread() const {
+ return mCompositorThread;
+ }
+
+ static CompositorThreadHolder* GetSingleton();
+
+ static bool IsActive() { return !!GetSingleton(); }
+
+ /**
+ * Creates the compositor thread and the global compositor map.
+ */
+ static void Start();
+
+ /*
+ * Waits for all [CrossProcess]CompositorBridgeParents to shutdown and
+ * releases compositor-thread owned resources.
+ */
+ static void Shutdown();
+
+ // Returns true if the calling thread is the compositor thread.
+ static bool IsInCompositorThread();
+
+ // Thread id to use as a MarkerThreadId option for profiler markers.
+ static ProfilerThreadId GetThreadId();
+
+ private:
+ ~CompositorThreadHolder();
+
+ nsCOMPtr<nsIThread> mCompositorThread;
+
+ static already_AddRefed<nsIThread> CreateCompositorThread();
+
+ friend class CompositorBridgeParent;
+};
+
+nsISerialEventTarget* CompositorThread();
+
+} // namespace layers
+} // namespace mozilla
+
+#endif // mozilla_layers_CompositorThread_h