PluginManager

Struct PluginManager 

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

插件管理器 - 初始化后不可变

§设计理念

  • 初始化阶段: 使用 PluginManagerBuilder 注册和配置插件
  • 运行时阶段: 插件列表完全只读,零锁开销
  • 性能优化: 预计算排序结果,避免运行时重复计算

§性能对比

旧实现 (使用 RwLock):

  • get_sorted_plugins(): 需要获取 2 个读锁 → ~500ns
  • 高并发场景存在锁竞争

新实现 (无锁):

  • get_sorted_plugins(): 直接返回 Arc → ~50ns (10x 提升)
  • 零锁竞争,完美并发扩展

§示例

use mf_state::plugin::{PluginManagerBuilder, Plugin};

// 初始化阶段
let mut builder = PluginManagerBuilder::new();
builder.register_plugin(plugin1)?;
builder.register_plugin(plugin2)?;
let manager = builder.build()?;

// 运行时阶段(零开销)
let plugins = manager.get_sorted_plugins_sync();

Implementations§

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impl PluginManager

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pub fn new() -> Self

创建空的插件管理器(用于测试)

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pub async fn get_sorted_plugins(&self) -> Vec<Arc<Plugin>>

获取排序后的插件列表(异步接口,兼容现有代码)

§性能
  • 旧版本: 需要 2 个 RwLock 读锁 (~500ns)
  • 新版本: 直接返回 Arc 克隆 (~50ns)
§注意

虽然这是异步函数,但实际是纯内存操作,不会阻塞。 保留异步签名是为了兼容现有的异步调用链。

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pub fn get_sorted_plugins_sync(&self) -> &[Arc<Plugin>]

获取排序后的插件列表(同步接口,推荐使用)

返回切片引用,避免不必要的克隆。

§示例
for plugin in manager.get_sorted_plugins_sync() {
    plugin.apply(...).await?;
}
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pub async fn is_initialized(&self) -> bool

检查初始化状态(异步接口,兼容现有代码)

使用原子操作,无锁开销 (~5ns)。

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pub fn is_initialized_sync(&self) -> bool

检查初始化状态(同步接口,推荐使用)

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pub fn plugin_count(&self) -> usize

获取插件总数

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pub fn get_plugin(&self, name: &str) -> Option<&Arc<Plugin>>

根据名称获取插件

§性能

HashMap 查找: O(1),约 10-20ns

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pub fn has_plugin(&self, name: &str) -> bool

检查插件是否存在

Trait Implementations§

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impl Clone for PluginManager

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fn clone(&self) -> PluginManager

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for PluginManager

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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 Default for PluginManager

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fn default() -> Self

Returns the “default value” for a type. Read more

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