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Kernel: Tidy up the ScopedCritical class a little bit

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This commit is contained in:
Andreas Kling 2020-07-06 11:27:07 +02:00
parent 0d851b1930
commit 3e0020e67d
Notes: sideshowbarker 2024-07-19 05:07:20 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/3e0020e67da
1 changed files with 20 additions and 25 deletions
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45
Kernel/Arch/i386/CPU.h
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@ -776,49 +776,44 @@ public:
else
cli();
}
ALWAYS_INLINE u32& in_critical() { return m_in_critical; }
ALWAYS_INLINE const FPUState& clean_fpu_state() const
{
return s_clean_fpu_state;
}
ALWAYS_INLINE bool has_feature(CPUFeature f) const
{
return (static_cast<u32>(m_features) & static_cast<u32>(f)) != 0;
}
void check_invoke_scheduler();
void invoke_scheduler_async() { m_invoke_scheduler_async = true; }
void enter_trap(TrapFrame& trap, bool raise_irq);
void exit_trap(TrapFrame& trap);
[[noreturn]] void initialize_context_switching(Thread& initial_thread);
void switch_context(Thread*& from_thread, Thread*& to_thread);
[[noreturn]] static void assume_context(Thread& thread, u32 flags);
u32 init_context(Thread& thread, bool leave_crit);
static bool get_context_frame_ptr(Thread& thread, u32& frame_ptr, u32& eip);
void set_thread_specific(u8* data, size_t len);
};
class ScopedCritical
{
u32 m_prev_flags;
bool m_valid;
class ScopedCritical {
AK_MAKE_NONCOPYABLE(ScopedCritical);
public:
ScopedCritical(const ScopedCritical&) = delete;
ScopedCritical& operator=(const ScopedCritical&) = delete;
ScopedCritical()
{
m_valid = true;
Processor::current().enter_critical(m_prev_flags);
}
~ScopedCritical()
{
if (m_valid) {
@ -827,30 +822,30 @@ public:
}
}
ScopedCritical(ScopedCritical&& from):
m_prev_flags(from.m_prev_flags),
m_valid(from.m_valid)
ScopedCritical(ScopedCritical&& from)
: m_prev_flags(exchange(from.m_prev_flags, 0))
, m_valid(exchange(from.m_valid, false))
{
from.m_prev_flags = 0;
from.m_valid = false;
}
ScopedCritical& operator=(ScopedCritical&& from)
{
if (&from != this) {
m_prev_flags = from.m_prev_flags;
m_valid = from.m_valid;
from.m_prev_flags = 0;
from.m_valid = false;
m_prev_flags = exchange(from.m_prev_flags, 0);
m_valid = exchange(from.m_valid, false);
}
return *this;
}
private:
u32 m_prev_flags { 0 };
bool m_valid { false };
};
struct TrapFrame {
u32 prev_irq_level;
RegisterState* regs; // must be last
TrapFrame() = delete;
TrapFrame(const TrapFrame&) = delete;
TrapFrame(TrapFrame&&) = delete;