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4226b662cd
We only ever use private futexes, so it doesn't make sense to carry around all the complexity required for global (cross-process) futexes.
37 lines
846 B
C++
37 lines
846 B
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Singleton.h>
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#include <Kernel/Memory/MemoryManager.h>
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#include <Kernel/Memory/VMObject.h>
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namespace Kernel::Memory {
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static Singleton<SpinLockProtectedValue<VMObject::AllInstancesList>> s_all_instances;
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SpinLockProtectedValue<VMObject::AllInstancesList>& VMObject::all_instances()
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{
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return s_all_instances;
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}
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VMObject::VMObject(VMObject const& other)
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: m_physical_pages(other.m_physical_pages)
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{
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all_instances().with([&](auto& list) { list.append(*this); });
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}
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VMObject::VMObject(size_t size)
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: m_physical_pages(ceil_div(size, static_cast<size_t>(PAGE_SIZE)))
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{
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all_instances().with([&](auto& list) { list.append(*this); });
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}
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VMObject::~VMObject()
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{
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VERIFY(m_regions.is_empty());
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}
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}
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