Module scoped 

Structured concurrency scopes for async tasks.

A Scope lets you spawn futures that borrow from the enclosing stack frame, analogous to std::thread::scope. Unlike thread scope, the tasks are driven cooperatively by the scope’s own future, they make progress whenever the scope is polled so no runtime-level spawn is involved and no unsafe is needed to extend lifetimes.

The scope function is the entry point. Inside the async closure, call Scope::spawn to enqueue a task; the returned ScopedJoinHandle resolves with the task’s output. Any tasks still running when the user closure’s future completes are drained before scope returns, so every borrow is released before the stack frame goes away.

Structs

Scope

A scope within which tasks can be spawned that borrow from the enclosing stack frame.

ScopeExecutor

An Executor wrapper that tracks spawned tasks so they can be canceled when a scope ends.

ScopedJoinHandle

A handle to a task spawned on a Scope.

Functions

executor_scope

Run an async closure with a scoped Executor wrapper.

scope

Create a scope for spawning tasks that borrow from the enclosing stack frame.