# Cysharp/UniTask

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10,519 stars · 967 forks · C# · mit

## Links

- GitHub: https://github.com/Cysharp/UniTask
- awesome-repositories: https://awesome-repositories.com/repository/cysharp-unitask.md

## Topics

`coroutine` `csharp` `task` `thread` `unity`

## Description

UniTask is a high-performance asynchronous task library designed specifically for the Unity game engine. It provides a specialized framework for managing background operations and complex game logic, enabling developers to utilize modern asynchronous patterns while maintaining consistent frame rates during high-frequency engine updates.

The library distinguishes itself through a zero-allocation architecture that prioritizes memory efficiency. By utilizing struct-based task representations and an internal object pooling system, it significantly reduces garbage collection pressure compared to standard language-level asynchronous primitives. It further optimizes execution by bypassing state machines for tasks that complete synchronously, ensuring that continuations execute directly on the current stack.

The framework integrates directly with the Unity engine update loop, providing custom awaiter types and thread-safe synchronization contexts. This ensures that asynchronous tasks remain compatible with the single-threaded constraints of the game engine environment while minimizing the memory overhead typically associated with high-frequency task scheduling.

## Tags

### Software Engineering & Architecture

- [Unity Asynchronous Task Libraries](https://awesome-repositories.com/f/software-engineering-architecture/asynchronous-task-managers/c-task-engines/unity-asynchronous-task-libraries.md) — Provides a high-performance library for managing asynchronous operations in Unity with minimal memory allocation.
- [High-Performance Game Task Execution](https://awesome-repositories.com/f/software-engineering-architecture/high-performance-resources/high-performance-game-task-execution.md) — Executes non-blocking tasks with minimal memory overhead to maintain smooth frame rates in resource-constrained applications.
- [Asynchronous Task Orchestration](https://awesome-repositories.com/f/software-engineering-architecture/asynchronous-task-orchestration.md) — Provides efficient alternatives to standard language-level asynchronous primitives for resource-constrained execution environments.
- [Object Pooling](https://awesome-repositories.com/f/software-engineering-architecture/object-pooling.md) — Implements an internal object pooling system to recycle task objects and minimize garbage collection pressure.
- [Task Pools](https://awesome-repositories.com/f/software-engineering-architecture/object-pooling/task-pools.md) — Recycles internal task objects through a pre-allocated memory pool to minimize the performance cost of frequent asynchronous operations.
- [Zero-Allocation Awaitables](https://awesome-repositories.com/f/software-engineering-architecture/zero-overhead-abstractions/zero-allocation-awaitables.md) — Implements custom awaiter interfaces that avoid the overhead of standard task objects by reusing internal state machine structures.
- [Asynchronous Task Execution](https://awesome-repositories.com/f/software-engineering-architecture/concurrency-models/asynchronous-task-execution.md) — Executes background operations with minimal memory usage to maintain consistent performance during high-frequency updates. ([source](https://github.com/Cysharp/UniTask/tree/master/docs/api))

### Development Tools & Productivity

- [Asynchronous](https://awesome-repositories.com/f/development-tools-productivity/task-schedulers/asynchronous.md) — Provides a high-performance, zero-allocation framework for managing asynchronous tasks and continuations within the game engine update loop.
- [Game Engine Utilities](https://awesome-repositories.com/f/development-tools-productivity/gaming-utilities/game-engine-utilities.md) — Provides a specialized tool for handling asynchronous workflows within the game engine environment.
- [Game Performance Optimizers](https://awesome-repositories.com/f/development-tools-productivity/gaming-utilities/performance-optimization-tools/game-performance-optimizers.md) — Reduces garbage collection pressure and memory overhead when running asynchronous operations during high-frequency game engine update loops.

### Game Development

- [Asynchronous Game Frameworks](https://awesome-repositories.com/f/game-development/game-engines-frameworks/asynchronous-game-frameworks.md) — Provides a specialized tool for handling asynchronous workflows within game loops to maintain consistent frame rates.
- [Asynchronous Programming Frameworks](https://awesome-repositories.com/f/game-development/asynchronous-programming-frameworks.md) — Provides a specialized framework for managing complex game logic and background tasks using modern asynchronous patterns.
- [Task Schedulers](https://awesome-repositories.com/f/game-development/engine-architecture/task-schedulers.md) — Manages task continuations and execution contexts to ensure thread-safe updates within the single-threaded constraints of the game engine loop.

### Programming Languages & Runtimes

- [Asynchronous Task Libraries](https://awesome-repositories.com/f/programming-languages-runtimes/asynchronous-task-libraries.md) — Provides a high-performance library for managing asynchronous operations in C# with minimal memory allocation.
- [Custom Awaiters](https://awesome-repositories.com/f/programming-languages-runtimes/language-features-paradigms/concurrency-models/concurrency/await-points/custom-awaiters.md) — Provides specialized awaiter types that integrate directly with the game engine update loop for efficient asynchronous execution.
- [Thread-Safe Synchronization Contexts](https://awesome-repositories.com/f/programming-languages-runtimes/language-features-paradigms/concurrency-models/concurrency/thread-local-contexts/thread-safe-synchronization-contexts.md) — Captures and restores execution contexts to ensure task continuations remain thread-safe within single-threaded game engine environments.
- [Struct-Based Task Representations](https://awesome-repositories.com/f/programming-languages-runtimes/struct-based-class-definitions/struct-based-task-representations.md) — Uses value types to represent asynchronous operations, preventing heap allocations and reducing garbage collection pressure.
- [Synchronous Completion Optimizations](https://awesome-repositories.com/f/programming-languages-runtimes/language-features-paradigms/concurrency-models/concurrency/task-orchestration-frameworks/thread-pools/goroutine-pools/completion-signals/synchronous-completion-optimizations.md) — Bypasses the asynchronous state machine for tasks that complete synchronously, executing continuations directly on the current stack.

### Operating Systems & Systems Programming

- [Memory Optimization Techniques](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/process-and-memory-management/memory-management/allocation-strategies/dynamic-memory-allocation/stack-allocation-optimizations/memory-optimization-techniques.md) — Reduces garbage collection pressure and heap allocations by using struct-based task representations and object pooling.

### Scientific & Mathematical Computing

- [High-Performance Task Schedulers](https://awesome-repositories.com/f/scientific-mathematical-computing/high-performance-execution-environments/high-performance-and-parallel-computing/high-performance-computing/high-performance-task-schedulers.md) — Executes non-blocking operations efficiently to maintain smooth frame rates and consistent performance.