/* * Copyright (C) 2021 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include "GraphicsChecksMac.h" #include "SwitchingGPUClient.h" namespace WebCore { class ScopedHighPerformanceGPURequest { public: ScopedHighPerformanceGPURequest() = default; ScopedHighPerformanceGPURequest(ScopedHighPerformanceGPURequest&& other) : m_requested(std::exchange(other.m_requested, false)) { } ~ScopedHighPerformanceGPURequest() { if (!m_requested) return; SwitchingGPUClient::singletonIfExists()->releaseHighPerformanceGPU(); } ScopedHighPerformanceGPURequest& operator=(ScopedHighPerformanceGPURequest&& other) { if (m_requested) SwitchingGPUClient::singletonIfExists()->releaseHighPerformanceGPU(); m_requested = std::exchange(other.m_requested, false); return *this; } static ScopedHighPerformanceGPURequest acquire() { if (!hasLowAndHighPowerGPUs()) return { }; auto client = SwitchingGPUClient::singletonIfExists(); if (!client) return { }; client->requestHighPerformanceGPU(); return { DidRequest }; } private: enum RequestState { DidRequest }; ScopedHighPerformanceGPURequest(RequestState) : m_requested(true) { } bool m_requested { false }; }; }