Struct GraphPool 

pub struct GraphPool { /* private fields */ }

图数据库连接池

v3.1.0 改进：从 Arc<Mutex<Vec<GraphConnection>>> 改为 Arc<ArrayQueue<GraphConnection>> + AtomicU32 + Notify， 使用无锁 MPMC 队列消除锁竞争，与 sz-orm-core 连接池设计一致。

Implementations

impl GraphPool

pub fn new(config: GraphConfig) -> Self

pub fn config(&self) -> &GraphConfig

pub async fn acquire(&self) -> Result<GraphConnection, GraphError>

获取连接

优先从空闲队列取；若空且未超 max_pool_size 则新建； 若已满则等待 release 唤醒。

pub async fn acquire_timeout( &self, timeout: Duration, ) -> Result<GraphConnection, GraphError>

带超时的 acquire

pub async fn release(&self, conn: GraphConnection)

归还连接到空闲队列

pub fn idle_count(&self) -> usize

空闲连接数

pub fn total_count(&self) -> u32

总连接数（idle + borrowed）

pub fn waiters_count(&self) -> u32

等待者数

pub fn close(&self)

关闭连接池

设置 closed 标志，后续 acquire 返回错误，release 直接丢弃。 已借出的连接不受影响（调用方自行 disconnect）。

pub fn is_closed(&self) -> bool

池是否已关闭

pub fn status(&self) -> GraphPoolStatus

获取池状态快照

Trait Implementations

impl Clone for GraphPool

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.