Other than malloc/free does a program need the OS to provide anything else?

Question

I\'m working on designing the kernel (which I\'m going to actually call the \"core\" just to be different, but its basically the same) for an OS I\'m working on. The specifics o

Answer 1

Compulsory reading: Knuth - Art of Computer Programming, Volume 1, Chapter 2, Section 2.5. Otherwise, you could read Kernighan & Ritchie "The C Programming Language" to see an implementation; or, you could read Plauger "The Standard C Library" to see another implementation.

I believe that what you need to do inside your core will be somewhat different from what the programs outside the core see. In particular, the in-core memory allocation for programs will be dealing with virtual memory, etc, whereas the programs outside the code simply see the results of what the core has provided.