Trait BackgroundPool 

pub trait BackgroundPool:
    Send
    + Sync
    + 'static {
    // Required method
    fn spawn(
        &self,
        work: Box<dyn FnOnce() -> Result<Box<dyn Any + Send>, ProximaError> + Send>,
    ) -> BackgroundHandle<Box<dyn Any + Send>>;
}

Pluggable backend for cross-thread CPU-bound work.

The chain Runtime is per-core (!Send futures). When a Pipe needs to do work that does migrate threads — image decoding, model inference, parallel parsing, fork-join compute — it routes through here. The pool runs on its own threads; the returned handle is Send so the per-core caller can await it across the chain-runtime / pool boundary.

Default: tokio::task::spawn_blocking (what Runtime::spawn_background_blocking does in TokioPerCoreRuntime, feature tokio, when no pool is installed with TokioPerCoreRuntime::with_background_pool — good for I/O-blocking work). Alternative: RayonBackgroundPool (feature rayon) — work- stealing across a fixed thread count, the right shape for CPU-bound parallel compute.

Required Methods

fn spawn( &self, work: Box<dyn FnOnce() -> Result<Box<dyn Any + Send>, ProximaError> + Send>, ) -> BackgroundHandle<Box<dyn Any + Send>>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors