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Kernel: Pull apart CPU.h

This does not add any functional changes
This commit is contained in:
Hendiadyoin1 2021-06-21 17:34:09 +02:00 committed by Andreas Kling
parent 37253ebcae
commit 7ca3d413f7
86 changed files with 3866 additions and 3493 deletions

View file

@ -0,0 +1,64 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
#include <Kernel/Arch/x86/Processor.h>
namespace Kernel {
class ScopedCritical {
AK_MAKE_NONCOPYABLE(ScopedCritical);
public:
ScopedCritical()
{
enter();
}
~ScopedCritical()
{
if (m_valid)
leave();
}
ScopedCritical(ScopedCritical&& from)
: m_prev_flags(exchange(from.m_prev_flags, 0))
, m_valid(exchange(from.m_valid, false))
{
}
ScopedCritical& operator=(ScopedCritical&& from)
{
if (&from != this) {
m_prev_flags = exchange(from.m_prev_flags, 0);
m_valid = exchange(from.m_valid, false);
}
return *this;
}
void leave()
{
VERIFY(m_valid);
m_valid = false;
Processor::current().leave_critical(m_prev_flags);
}
void enter()
{
VERIFY(!m_valid);
m_valid = true;
Processor::current().enter_critical(m_prev_flags);
}
private:
u32 m_prev_flags { 0 };
bool m_valid { false };
};
}