ladybird/Kernel/Library/ScopedCritical.cpp
Liav A 7c0540a229 Everywhere: Move global Kernel pattern code to Kernel/Library directory
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.
2023-06-04 21:32:34 +02:00

52 lines
833 B
C++

/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Library/ScopedCritical.h>
#include <Kernel/Arch/Processor.h>
namespace Kernel {
ScopedCritical::ScopedCritical()
{
enter();
}
ScopedCritical::~ScopedCritical()
{
if (m_valid)
leave();
}
ScopedCritical::ScopedCritical(ScopedCritical&& from)
: m_valid(exchange(from.m_valid, false))
{
}
ScopedCritical& ScopedCritical::operator=(ScopedCritical&& from)
{
if (&from != this) {
m_valid = exchange(from.m_valid, false);
}
return *this;
}
void ScopedCritical::leave()
{
VERIFY(m_valid);
m_valid = false;
Processor::leave_critical();
}
void ScopedCritical::enter()
{
VERIFY(!m_valid);
m_valid = true;
Processor::enter_critical();
}
}