From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- gfx/layers/ipc/CompositorThread.h | 81 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 gfx/layers/ipc/CompositorThread.h (limited to 'gfx/layers/ipc/CompositorThread.h') diff --git a/gfx/layers/ipc/CompositorThread.h b/gfx/layers/ipc/CompositorThread.h new file mode 100644 index 0000000000..3352889982 --- /dev/null +++ b/gfx/layers/ipc/CompositorThread.h @@ -0,0 +1,81 @@ +/* -*- 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 nsIThread; + +namespace mozilla { +namespace layers { + +class CompositorThreadHolder final { + NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_DELETE_ON_MAIN_THREAD( + CompositorThreadHolder) + + public: + CompositorThreadHolder(); + + nsIThread* GetCompositorThread() const { return mCompositorThread; } + + /** + * Returns true if the calling thread is the compositor thread. This works + * even if the CompositorThread has begun to shutdown. + */ + bool IsInThread() { + bool rv = false; + MOZ_ALWAYS_TRUE(NS_SUCCEEDED(mCompositorThread->IsOnCurrentThread(&rv))); + return rv; + } + + nsresult Dispatch(already_AddRefed event, + uint32_t flags = nsIEventTarget::DISPATCH_NORMAL) { + return mCompositorThread->Dispatch(std::move(event), flags); + } + + 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(); + + const nsCOMPtr mCompositorThread; + + static already_AddRefed CreateCompositorThread(); + + friend class CompositorBridgeParent; +}; + +nsIThread* CompositorThread(); + +} // namespace layers +} // namespace mozilla + +#endif // mozilla_layers_CompositorThread_h -- cgit v1.2.3