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/*
* Copyright (C) 2024 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
#if ENABLE(MODEL_PROCESS)
#include "AuxiliaryProcess.h"
#include "SandboxExtension.h"
#include "SharedPreferencesForWebProcess.h"
#include <WebCore/ProcessIdentifier.h>
#include <WebCore/Timer.h>
#include <pal/SessionID.h>
#include <wtf/Function.h>
#include <wtf/MemoryPressureHandler.h>
#include <wtf/MonotonicTime.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakPtr.h>
#if PLATFORM(VISION) && ENABLE(GPU_PROCESS)
namespace IPC {
class SharedFileHandle;
}
#endif
namespace WebKit {
class ModelConnectionToWebProcess;
struct ModelProcessConnectionParameters;
struct ModelProcessCreationParameters;
class ModelProcess final : public AuxiliaryProcess, public ThreadSafeRefCounted<ModelProcess> {
WTF_MAKE_NONCOPYABLE(ModelProcess);
WTF_MAKE_TZONE_ALLOCATED(ModelProcess);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(ModelProcess);
public:
explicit ModelProcess(AuxiliaryProcessInitializationParameters&&);
~ModelProcess();
static constexpr WTF::AuxiliaryProcessType processType = WTF::AuxiliaryProcessType::Model;
void ref() const final { ThreadSafeRefCounted::ref(); }
void deref() const final { ThreadSafeRefCounted::deref(); }
void removeModelConnectionToWebProcess(ModelConnectionToWebProcess&);
void prepareToSuspend(bool isSuspensionImminent, MonotonicTime estimatedSuspendTime, CompletionHandler<void()>&&);
void processDidResume();
void resume();
void connectionToWebProcessClosed(IPC::Connection&);
ModelConnectionToWebProcess* webProcessConnection(WebCore::ProcessIdentifier) const;
void tryExitIfUnusedAndUnderMemoryPressure();
const String& applicationVisibleName() const { return m_applicationVisibleName; }
#if PLATFORM(VISION) && ENABLE(GPU_PROCESS)
void requestSharedSimulationConnection(WebCore::ProcessIdentifier, CompletionHandler<void(std::optional<IPC::SharedFileHandle>)>&&);
#endif
void webProcessConnectionCountForTesting(CompletionHandler<void(uint64_t)>&&);
private:
void lowMemoryHandler(Critical, Synchronous);
// AuxiliaryProcess
void initializeProcess(const AuxiliaryProcessInitializationParameters&) override;
void initializeProcessName(const AuxiliaryProcessInitializationParameters&) override;
void initializeSandbox(const AuxiliaryProcessInitializationParameters&, SandboxInitializationParameters&) override;
bool shouldTerminate() override;
void tryExitIfUnused();
bool canExitUnderMemoryPressure() const;
// IPC::Connection::Client
void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override;
// Message Handlers
void initializeModelProcess(ModelProcessCreationParameters&&, CompletionHandler<void()>&&);
void createModelConnectionToWebProcess(WebCore::ProcessIdentifier, PAL::SessionID, IPC::Connection::Handle&&, ModelProcessConnectionParameters&&, CompletionHandler<void()>&&);
void sharedPreferencesForWebProcessDidChange(WebCore::ProcessIdentifier, SharedPreferencesForWebProcess&&, CompletionHandler<void()>&&);
void addSession(PAL::SessionID);
void removeSession(PAL::SessionID);
#if ENABLE(CFPREFS_DIRECT_MODE)
void dispatchSimulatedNotificationsForPreferenceChange(const String& key) final;
#endif
// Connections to WebProcesses.
HashMap<WebCore::ProcessIdentifier, Ref<ModelConnectionToWebProcess>> m_webProcessConnections;
MonotonicTime m_creationTime { MonotonicTime::now() };
HashSet<PAL::SessionID> m_sessions;
WebCore::Timer m_idleExitTimer;
String m_applicationVisibleName;
};
} // namespace WebKit
#endif // ENABLE(MODEL_PROCESS)
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