banan-os/kernel/include/kernel/CriticalScope.h

30 lines
412 B
C++

#pragma once
#include <BAN/NoCopyMove.h>
#include <stddef.h>
namespace Kernel
{
class CriticalScope
{
BAN_NON_COPYABLE(CriticalScope);
BAN_NON_MOVABLE(CriticalScope);
public:
CriticalScope()
{
asm volatile("pushf; cli; pop %0" : "=r"(m_flags) :: "memory");
}
~CriticalScope()
{
asm volatile("push %0; popf" :: "rm"(m_flags) : "memory", "cc");
}
private:
size_t m_flags;
};
}