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Condvar

Struct Condvar 

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pub struct Condvar {
    pub inner: UPIntrFreeCell<CondvarInner>,
}
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Condvar

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§inner: UPIntrFreeCell<CondvarInner>

UPIntrFreeCell

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impl Condvar

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pub fn new() -> Self

创建一个新的条件变量。

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pub fn signal(&self) -> Option<CondvarSignalResult>

唤醒某个阻塞在当前条件变量上的线程

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pub fn wait_no_sched( &self, tid: ThreadId, mutex_id: usize, mutex: Arc<dyn Mutex>, ) -> bool

将当前线程阻塞在条件变量上

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pub fn wait_with_mutex( &self, tid: ThreadId, mutex_id: usize, mutex: Arc<dyn Mutex>, ) -> CondvarWaitResult

原子地释放互斥锁并把线程挂到条件变量队列。

被 signal 的线程会在 signal 路径上重新竞争互斥锁, 只有真正拿到锁之后才会返回到用户态。

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impl<T> Any for T
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type Error = Infallible

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type Error = <U as TryFrom<T>>::Error

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