LwMEM is a lightweight dynamic memory manager optimized for embedded systems.

Open documentation

• Written in C (C11), compatible with stdint.h data types
• Implements standard C library functions for memory allocation, malloc, calloc, realloc and free
• Uses first-fit algorithm to search for free block
• Supports multiple allocation instances to split between memories and/or CPU cores
• Supports different memory regions, ideal for use with fragmented or embedded memories
• Highly configurable for memory allocation and reallocation
• Supports automotive applications
• Supports advanced free/realloc algorithms to optimize memory usage
• Supports light implementation with allocation only
• Optional runtime allocation statistics: used/free/minimum-ever-free bytes and alloc/free counts
• Safe free and realloc variants that null the caller's pointer after the operation
• Optional memory wipe on free/realloc for security-sensitive applications
• Query the usable size of an allocated block at runtime
• Operating system ready, thread-safe API, with ready-made ports for CMSIS-OS, pthreads, ThreadX and Win32
• C++ wrapper functions
• User friendly MIT license

Fresh contributions are always welcome. Simple instructions to proceed:

1. Fork Github repository
2. Follow C style & coding rules and use clang-format to format the code
3. Create a pull request to develop branch with new features or bug fixes

Alternatively you may:

1. Report a bug
2. Ask for a feature request