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Raw spin lock #151

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Merged
fslongjin merged 2 commits into from
Jan 16, 2023
Merged

Raw spin lock #151

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1aef283
RawSpinLock
AlbertSanoe Jan 15, 2023
5b7b97f
RawSpinLock
AlbertSanoe Jan 15, 2023
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17 changes: 13 additions & 4 deletions kernel/src/libs/spinlock.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -127,10 +127,19 @@ impl RawSpinlock {
self.0.store(value, Ordering::SeqCst);
}

// todo: spin_lock_irqsave
// todo: spin_unlock_irqrestore
}
/// @brief 保存中断状态到flags中，关闭中断，并对自旋锁加锁
pub fn lock_irqsave(&self, flags: &mut u64) {
local_irq_save(flags);
self.lock();
}

/// @brief 恢复rflags以及中断状态并解锁自旋锁
pub fn unlock_irqrestore(&self, flags: &u64){
self.unlock();
local_irq_restore(flags);
}

}
/// 实现了守卫的SpinLock, 能够支持内部可变性
///
#[derive(Debug)]
Expand Down Expand Up @@ -171,7 +180,7 @@ impl<T> SpinLock<T> {
/// 实现Deref trait，支持通过获取SpinLockGuard来获取临界区数据的不可变引用
impl<T> Deref for SpinLockGuard<'_, T> {
type Target = T;

fn deref(&self) -> &Self::Target {
return unsafe { &*self.lock.data.get() };
}
Expand Down