# smol-rs/async-task

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572 stars · 58 forks · Rust · apache-2.0

## Links

- GitHub: https://github.com/smol-rs/async-task
- awesome-repositories: https://awesome-repositories.com/repository/smol-rs-async-task.md

## Topics

`async` `rust`

## Description

Async-task is a low-level Rust concurrency library and asynchronous task executor designed for building custom asynchronous runtimes and managing background task execution pipelines. It provides concurrency primitives that handle atomic task state management, heap-allocated futures, output retrieval, and type-erased execution handles. 

The library coordinates task execution, cancellation, and polling states across multiple threads using lock-free atomic operations and reference counting. Developers can supply custom scheduling logic and metadata hooks that dictate when and how tasks are queued, while extracted join handles capture and propagate the final return values of underlying futures back to awaiting callers.

## Tags

### Software Engineering & Architecture

- [Async Task Spawning](https://awesome-repositories.com/f/software-engineering-architecture/task-scheduling/parallel-task-executors/parallel-task-spawning/async-task-spawning.md) — Supports allocating futures on the heap with attached state to manage their lifecycle, scheduling, and polling within asynchronous environments. ([source](https://github.com/smol-rs/async-task#readme))
- [Atomic State Synchronization](https://awesome-repositories.com/f/software-engineering-architecture/atomic-state-synchronization.md) — Coordinates task execution, cancellation, and polling states across multiple threads using lock-free atomic operations and reference counting.
- [Type-Erased Registries](https://awesome-repositories.com/f/software-engineering-architecture/component-registries/type-erased-registries.md) — Wraps the internal future and scheduler into a clean handle that abstracts away the underlying task type for runtime executors.
- [Asynchronous Schedulers](https://awesome-repositories.com/f/software-engineering-architecture/task-scheduling/asynchronous-schedulers.md) — Manages the execution queue and lifecycle of asynchronous futures by defining custom scheduling logic and attaching state metadata.
- [Asynchronous Task Executors](https://awesome-repositories.com/f/software-engineering-architecture/task-scheduling/asynchronous-schedulers/asynchronous-thread-schedulers/custom-thread-executors/asynchronous-task-executors.md) — Provides a low-level library for allocating, scheduling, and executing futures with custom task-management strategies.

### DevOps & Infrastructure

- [Task Schedulers](https://awesome-repositories.com/f/devops-infrastructure/automation-orchestration/task-execution-frameworks/task-job-management/task-schedulers.md) — Enables pulling scheduled tasks from a queue using a runnable handle to execute the underlying future and retrieve its output. ([source](https://docs.rs/async-task))
- [Custom Scheduler Implementations](https://awesome-repositories.com/f/devops-infrastructure/automation-orchestration/task-execution-frameworks/task-job-management/task-schedulers/delayed-task-scheduling/custom-scheduler-implementations.md) — Allows developers to supply custom scheduling logic and metadata hooks that dictate precisely when and how tasks are queued.

### Operating Systems & Systems Programming

- [Concurrency Primitives](https://awesome-repositories.com/f/operating-systems-systems-programming/concurrency-primitives.md) — Spawns and coordinates background tasks manually to implement custom concurrency primitives and parallel processing pipelines.
- [Dynamic Heap Allocators](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/process-and-memory-management/memory-management/allocation-strategies/dynamic-memory-allocation/memory-allocation-tracers/heap-allocation-strategies/dynamic-heap-allocators.md) — Allocates futures on the heap alongside execution state to unify data storage and lifecycle management into a single contiguous block.

### Programming Languages & Runtimes

- [Future-Based Result Handling](https://awesome-repositories.com/f/programming-languages-runtimes/future-based-result-handling.md) — Extracted join handles capture the final return value of the underlying future and propagate it safely back to awaiting callers.
- [Concurrency Management Libraries](https://awesome-repositories.com/f/programming-languages-runtimes/language-features-paradigms/concurrency-models/concurrency/task-orchestration-frameworks/concurrency-management-libraries.md) — Provides utilities for building custom async runtimes and managing task queues in concurrent applications.
- [Asynchronous Runtimes](https://awesome-repositories.com/f/programming-languages-runtimes/asynchronous-runtimes.md) — Enables building lightweight asynchronous runtimes from scratch by allocating futures on the heap and controlling their polling behavior.
