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https://github.com/SerenityOS/serenity
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7c0540a229
This has KString, KBuffer, DoubleBuffer, KBufferBuilder, IOWindow, UserOrKernelBuffer and ScopedCritical classes being moved to the Kernel/Library subdirectory. Also, move the panic and assertions handling code to that directory.
52 lines
833 B
C++
52 lines
833 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 <Kernel/Library/ScopedCritical.h>
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#include <Kernel/Arch/Processor.h>
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namespace Kernel {
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ScopedCritical::ScopedCritical()
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{
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enter();
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}
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ScopedCritical::~ScopedCritical()
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{
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if (m_valid)
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leave();
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}
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ScopedCritical::ScopedCritical(ScopedCritical&& from)
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: m_valid(exchange(from.m_valid, false))
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{
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}
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ScopedCritical& ScopedCritical::operator=(ScopedCritical&& from)
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{
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if (&from != this) {
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m_valid = exchange(from.m_valid, false);
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}
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return *this;
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}
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void ScopedCritical::leave()
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{
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VERIFY(m_valid);
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m_valid = false;
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Processor::leave_critical();
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}
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void ScopedCritical::enter()
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{
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VERIFY(!m_valid);
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m_valid = true;
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Processor::enter_critical();
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}
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}
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