how to set pointer to a memory to NULL using memset?

Question

I have a structure

typedef struct my_s {

   int x;
   ...
} my_T;

my_t * p_my_t;

I want to set the address of p_my_t to

Answer 1

If I get it right, memset won't solve your problem. If A and B are separate processes, then p_my_t in process A will be different form p_my_t in process B. You just can't pass a pointer between different processes. I sugest you use some kind of IPC mechanism in order to sinchronyze your two processes (message queues, for example), and just using p_my_t = NULL instead of memset.