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Kernel: Track the number of recursive spinlocks a thread is holding

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Bananymous
2025-06-06 06:51:15 +03:00
parent 56db0efe58
commit 81ff71a97f
3 changed files with 70 additions and 33 deletions
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31
kernel/include/kernel/Lock/SpinLock.h
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@@ -43,36 +43,11 @@ namespace Kernel
public:
RecursiveSpinLock() = default;
InterruptState lock()
{
auto state = Processor::get_interrupt_state();
Processor::set_interrupt_state(InterruptState::Disabled);
InterruptState lock();
auto id = Processor::current_id().as_u32();
bool try_lock_interrupts_disabled();
ProcessorID::value_type expected = PROCESSOR_NONE.as_u32();
while (!m_locker.compare_exchange(expected, id, BAN::MemoryOrder::memory_order_acq_rel))
{
if (expected == id)
break;
Processor::pause();
expected = PROCESSOR_NONE.as_u32();
}
m_lock_depth++;
return state;
}
void unlock(InterruptState state)
{
ASSERT(Processor::get_interrupt_state() == InterruptState::Disabled);
ASSERT(current_processor_has_lock());
ASSERT(m_lock_depth > 0);
if (--m_lock_depth == 0)
m_locker.store(PROCESSOR_NONE.as_u32(), BAN::MemoryOrder::memory_order_release);
Processor::set_interrupt_state(state);
}
void unlock(InterruptState state);
uint32_t lock_depth() const { return m_lock_depth; }