abseil/abseil-cpp
Abseil Cpp
Abseil is a common utility library for C++ that provides foundational building blocks for applications. It serves as a collection of optimized utility functions and data structures that augment the C++ standard library across different compiler versions.
The library is distinguished by its high-performance containers, including SIMD-accelerated hash maps and sets for efficient key-value lookups. It also provides a comprehensive framework for computing absolute time points, durations, and timestamps across global time zones.
The project covers a broad range of capability areas, including concurrency and synchronization primitives, high-precision memory management, and standardized error handling using status and result types. Additionally, it includes utilities for string manipulation, command line flag parsing, and the generation of pseudorandom values.
The library integrates into build pipelines via CMake configuration targets.
Features
- C++ Common Utility Libraries - Serves as a comprehensive collection of optimized foundational building blocks for C++ applications.
- High-Performance Containers - Ships SIMD-accelerated hash maps and sets for high-performance key-value lookups and storage.
- Hash Tables - Implements a high-performance Swiss-Table hash map using SIMD metadata lookups for accelerated key searches.
- Concurrency & Threading - Coordinates shared resource access using mutexes and locking primitives to prevent data races.
- Custom Type Hashers - Implements specialized hash functors to allow complex data types to be used in high-performance hash maps.
- High-Performance Containers - Ships SIMD-accelerated hash maps and sets for high-performance key-value lookups and storage.
- Swiss Tables - Uses a specialized SIMD-based table implementation for high-performance lookups in unordered containers.
- Time Zone Management - Computes absolute time points, handles durations, and formats timestamps across global time zones.
- Memory Allocation Libraries - Provides extended facilities for allocating and managing memory that supplement the C++ standard library.
- Hashing Implementations - Provides standard library utilities for mapping arbitrary data types to fixed-size hash values.
- Time Zone Converters - Provides a framework for computing absolute time points and parsing durations across global time zones.
- Standard Library Extensions - Provides optimized replacements and backported modern features for the C++ standard library across different compiler versions.
- Concurrency Synchronization Primitives - Provides low-level locking primitives and mutexes to coordinate shared resource access in concurrent environments.
- Error Handling - Encapsulates success and failure using a standardized status value type to pass error information across API boundaries.
- Error Propagation Systems - Uses standardized value types to encapsulate and propagate success or failure states across API boundaries.
- Memory Management - Provides extended allocation and management utilities for efficient memory resource handling.
- Type Hash Generators - Generates consistent hash values for complex data structures using a framework of specialized hash functors.
- Scope Guards - Ensures reliable resource release by executing cleanup callbacks automatically upon scope exit.
- Command-Line Argument Parsers - Provides utilities to process command line arguments and configure application behavior via flags.
- Custom Memory Allocators - Provides specialized memory allocation utilities that bypass or augment standard library memory managers.
- String Manipulators - Provides routines for efficient slicing, replacing, and transforming of text strings.
- Standard Library Augmentations - Provides container-based logic and extended functions that augment standard C++ library capabilities.
- Scope Guards - Ensures resource cleanup by executing registered callback functions automatically when a local variable leaves scope.
- Bitwise Manipulation Utilities - Implements high-performance bitwise operations and 128-bit integer arithmetic.
- Cleanup Callbacks - Runs specific cleanup logic automatically when program execution leaves a defined block of code.
- SIMD Accelerated Searchers - Uses SIMD instructions to scan hash table buckets and accelerate key search operations.
- Core Frameworks - Collection of foundational C++ library components.
- Developer Tools - Common C++ libraries from Google.
- Example Projects - C++ library collection configured for build system integration.
- Standard Libraries - Commonly used utility libraries for modern C++ development.
- Utility Libraries - Google's open-source C++ code collection.
