apple/swift-atomics
Swift Atomics
Swift Atomics is a library providing low-level primitives for thread-safe memory operations within the Swift programming language. It serves as a toolkit for concurrent programming, enabling the development of data structures that manage shared memory access across multiple execution contexts without relying on traditional software locks.
The library distinguishes itself by providing type-safe wrappers that encapsulate raw memory storage, ensuring that shared data remains protected while preventing accidental non-atomic access. It utilizes hardware-mapped intrinsics and compiler-integrated memory barriers to enforce strict consistency rules, allowing developers to control how concurrent operations are observed across different processor cores.
The project covers a broad range of synchronization capabilities, including atomic arithmetic for integers and booleans, as well as the management of shared class instances and pointers. These features facilitate the design of lock-free algorithms and high-performance concurrent systems by mapping operations directly to processor-level instructions. The source code is structured as a framework bundle to support integration into larger software projects.
Features
- Atomic Memory Operations - Provides a collection of low-level primitives for performing thread-safe memory operations on integers, booleans, and pointers.
- Async Concurrency Toolkits - Provides a collection of asynchronous synchronization primitives designed for multi-threaded systems programming.
- Low-Level Swift Memory Management - Provides specialized techniques for managing raw memory and ownership of values within the language.
- Atomic Value Wrappers - Provides thread-safe wrappers for boolean, numeric, and object reference values with atomic read-modify-write operations.
- Low-Level System Operations - Provides direct access to raw memory pointers and uninitialized memory for performance-critical system tasks.
- High-Performance Systems Programming - Provides resource-efficient software development tools focusing on low-latency execution and manual memory management.
- Atomic Primitives - Provides lock-free utilities for performing atomic updates on basic types and object references.
- Integer Atomic Operations - Provides lock-free atomic operations on integer variables to avoid data races in concurrent code.
- System-Level Atomic Intrinsics - Provides atomic read-modify-write operations as compiler intrinsics for lock-free programming.
- Memory Barriers - Provides low-level hardware instructions to enforce memory operation ordering without traditional locking.
- Reference Management - Provides mechanisms for managing shared class instances and lazily initialized values to prevent race conditions.
- Concurrent Data Structures - Provides data structures designed for safe concurrent access across multiple threads.
