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/*
* Copyright (C) 2019-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include "shared/source/page_fault_manager/cpu_page_fault_manager.h"
#include <csignal>
#include <functional>
#include <vector>
namespace NEO {
class PageFaultManagerLinux : public virtual CpuPageFaultManager {
public:
PageFaultManagerLinux();
~PageFaultManagerLinux() override;
static void pageFaultHandlerWrapper(int signal, siginfo_t *info, void *context);
protected:
void allowCPUMemoryAccess(void *ptr, size_t size) override;
void protectCPUMemoryAccess(void *ptr, size_t size) override;
void protectCpuMemoryFromWrites(void *ptr, size_t size) override;
void allowCPUMemoryEvictionImpl(bool evict, void *ptr, CommandStreamReceiver &csr, OSInterface *osInterface) override;
bool checkFaultHandlerFromPageFaultManager() override;
void registerFaultHandler() override;
void callPreviousHandler(int signal, siginfo_t *info, void *context);
bool previousHandlerRestored = false;
static std::function<void(int signal, siginfo_t *info, void *context)> pageFaultHandler;
std::vector<struct sigaction> previousPageFaultHandlers;
int handlerIndex = 0;
};
class CpuPageFaultManagerLinux final : public PageFaultManagerLinux {};
} // namespace NEO
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