ladybird/Kernel/Memory/ScopedAddressSpaceSwitcher.cpp
Brian Gianforcaro 0223faf6f4 Kernel: Access MemoryManager static functions statically
SonarCloud flagged this "Code Smell", where we are accessing these
static methods as if they are instance methods. While it is technically
possible, it is very confusing to read when you realize they are static
functions.
2021-10-02 18:16:15 +02:00

27 lines
673 B
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Arch/x86/InterruptDisabler.h>
#include <Kernel/Memory/MemoryManager.h>
#include <Kernel/Memory/ScopedAddressSpaceSwitcher.h>
namespace Kernel {
ScopedAddressSpaceSwitcher::ScopedAddressSpaceSwitcher(Process& process)
{
VERIFY(Thread::current() != nullptr);
m_previous_cr3 = read_cr3();
Memory::MemoryManager::enter_process_address_space(process);
}
ScopedAddressSpaceSwitcher::~ScopedAddressSpaceSwitcher()
{
InterruptDisabler disabler;
Thread::current()->regs().cr3 = m_previous_cr3;
write_cr3(m_previous_cr3);
}
}