How do I force a program to appear to run out of memory?

Question

I have a C/C++ program that might be hanging when it runs out of memory. We discovered this by running many copies at the same time. I want to debug the program without co

Answer 1

One way is to write a wrapper around malloc().

static unsigned int requested =0;

void* my_malloc(size_tamount){

   if (requested + amount < LIMIT){
       requested+=amount;
       return malloc(amount);
   }

   return NULL
}

Your could use a #define to overload your malloc.

As GMan states, you could overload new / delete operators as well (for the C++ case).

Not sure if that's the best way, or what you are looking for