WriteOnceState

once::write_once

Enum WriteOnceState 

Source 
#[repr(u8)]
enum WriteOnceState {
    Uninit = 0,
    Writing = 1,
    Init = 2,
}
Expand description

The possible states of a WriteOnce.

We distinguish between Uninit and Writing so that we reach the Err branch of set if set has been called by any thread before.

We distinguish between Writing and Init so that loading Init has a happens-before relationship with the write in set.

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Uninit = 0

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Writing = 1

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Init = 2

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const ALIGN: usize

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type Init = T

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