Struct SubmitAgent

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pub struct SubmitAgent { /* private fields */ }
Expand description

提交代理(SubmitAgent)是用户通过 ZeroCopyHandle::reserve_writer 成功预留空间后获得的对象。 它代表一个已确认的预留,包含预留 ID、偏移量和大小。 用户必须将此 Agent 转换为 SingleAgentChunkAgent 来实际提交数据, 或者直接 Drop 它以取消预留(这会通知 Manager 预留失败)。

注意: 直接 Drop SubmitAgent 会隐式地通知 Manager 该预留失败。 如果想成功提交数据,必须调用 into_single_agentinto_chunk_agent

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impl SubmitAgent

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pub fn id(&self) -> ReservationId

获取预留 ID

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pub fn offset(&self) -> AbsoluteOffset

获取预留的起始偏移量

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pub fn size(&self) -> usize

获取预留的大小

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pub fn into_single_agent(self) -> SingleAgent

SubmitAgent 转换为 SingleAgent,用于单次提交所有数据。 转换后,原 SubmitAgent 被消费,其 Drop 实现不会再发送失败通知。 如果转换后的 SingleAgent 被 Drop 而未成功提交数据,则由 SingleAgent 的 Drop 实现负责通知 Manager 失败。

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pub fn into_chunk_agent(self) -> ChunkAgent

SubmitAgent 转换为 ChunkAgent,用于分块提交数据。 转换后,原 SubmitAgent 被消费,其 Drop 实现不会再发送失败通知。 如果转换后的 ChunkAgent 被 Drop 而未成功提交数据,则由 ChunkAgent 的 Drop 实现负责通知 Manager 失败。

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impl Debug for SubmitAgent

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Drop for SubmitAgent

SubmitAgent 的 Drop 实现。 如果 Agent 没有被消费 (即没有调用 into_single_agentinto_chunk_agent) 就被 Drop, 则向 Manager 发送预留失败的通知。

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fn drop(&mut self)

Executes the destructor for this type. Read more

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Gets the TypeId of self. Read more
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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type Error = <U as TryFrom<T>>::Error

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