[riot-notifications] [RIOT-OS/RIOT] [WIP] Generic memory block allocator (#7651)

Tobias Heider notifications at github.com
Wed Sep 27 19:45:40 CEST 2017

This PR adds a generic block allocator, allowing "dynamic" allocations of structures of the same size in a static memory pool.
It is meant to replace malloc in cases where only fixed size blocks are allocated and freed (see #7615).

### Example usage
// Initialize static memory pool "mem" which can hold 3 somestruct_t
MEMARRAY(mem, somestruct_t, 3);

// Initialize mem as a linked list of free elements

// Allocate structure
mem = memarray_alloc(&mem);

// Do whatever needs to be done

// Free struct
memarray_free(&mem, mem);

### Work in Progress
Things to be done:
- Add documentation
- Add unittests
You can view, comment on, or merge this pull request online at:


-- Commit Summary --

  * sys/memarray: added generic memory block allocator module

-- File Changes --

    M sys/Makefile (3)
    A sys/include/memarray.h (55)
    A sys/memarray/Makefile (1)
    A sys/memarray/memarray.c (39)

-- Patch Links --


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