tree 6d5fcd254367114217dc83917c9d8180845dc9c5
parent f717ccd092e51ed41713735f28176f740c61d31f
author Stephanos Ioannidis <root@stephanos.io> 1620829632 +0900
committer Kumar Gala <kumar.gala@gmail.com> 1620909043 -0500

lib: newlib: Add malloc lock

This commit adds a lock implementation for the newlib heap memory
management functions (`malloc` and `free`).

The `__malloc_lock` and `__malloc_unlock` functions are called by the
newlib `malloc` and `free` functions to synchronise access to the heap
region.

Without this lock, making use of the `malloc` and `free` functions from
multiple threads will result in the corruption of the heap region.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>