Are the standard memory allocation functions (new,delete,malloc and free) thread safe when using RL-ARM by default or do I have to implement the _mutex_ functions myself if so is it just the _mutex_ functions that need to be implemented or are there others to ensure that all standard library function are thread safe?
Answer is yes for these functions. http://www.keil.com/support/man/docs/armlib/armlib_chdfgjej.htm
Does the RL-ARM Library have its own default implantation of the _mutex_ functions?
The point is not on the RL-ARM library that is standalone. Think about you multi-threaded environment ...