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* Copyright (C) 2019 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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#if ENABLE(GPU_PROCESS)
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#include "AuxiliaryProcess.h"
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#include "WebPageProxyIdentifier.h"
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#include <pal/SessionID.h>
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#include <wtf/Function.h>
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#include <wtf/MemoryPressureHandler.h>
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#include <wtf/WeakPtr.h>
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class GPUConnectionToWebProcess;
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struct GPUProcessCreationParameters;
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struct GPUProcessSessionParameters;
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class GPUProcess : public AuxiliaryProcess, public ThreadSafeRefCounted<GPUProcess>, public CanMakeWeakPtr<GPUProcess> {
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WTF_MAKE_NONCOPYABLE(GPUProcess);
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explicit GPUProcess(AuxiliaryProcessInitializationParameters&&);
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static constexpr ProcessType processType = ProcessType::GPU;
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void removeGPUConnectionToWebProcess(GPUConnectionToWebProcess&);
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void prepareToSuspend(bool isSuspensionImminent, CompletionHandler<void()>&&);
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void processDidResume();
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void connectionToWebProcessClosed(IPC::Connection&);
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GPUConnectionToWebProcess* webProcessConnection(WebCore::ProcessIdentifier) const;
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const String& mediaCacheDirectory(PAL::SessionID) const;
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#if ENABLE(LEGACY_ENCRYPTED_MEDIA)
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const String& mediaKeysStorageDirectory(PAL::SessionID) const;
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void lowMemoryHandler(Critical);
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void initializeProcess(const AuxiliaryProcessInitializationParameters&) override;
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void initializeProcessName(const AuxiliaryProcessInitializationParameters&) override;
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void initializeSandbox(const AuxiliaryProcessInitializationParameters&, SandboxInitializationParameters&) override;
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bool shouldTerminate() override;
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// IPC::Connection::Client
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void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override;
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void didClose(IPC::Connection&) override;
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void initializeGPUProcess(GPUProcessCreationParameters&&);
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void createGPUConnectionToWebProcess(WebCore::ProcessIdentifier, PAL::SessionID, CompletionHandler<void(Optional<IPC::Attachment>&&)>&&);
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void addSession(PAL::SessionID, GPUProcessSessionParameters&&);
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void removeSession(PAL::SessionID);
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void processDidTransitionToForeground();
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void processDidTransitionToBackground();
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void setMockCaptureDevicesEnabled(bool);
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// Connections to WebProcesses.
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HashMap<WebCore::ProcessIdentifier, Ref<GPUConnectionToWebProcess>> m_webProcessConnections;
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String mediaCacheDirectory;
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#if ENABLE(LEGACY_ENCRYPTED_MEDIA)
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String mediaKeysStorageDirectory;
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HashMap<PAL::SessionID, GPUSession> m_sessions;
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} // namespace WebKit
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#endif // ENABLE(GPU_PROCESS)