Memory usage of current process in C

Question

I need to get the memory usage of the current process in C. Can someone offer a code sample of how to do this on a Linux platform?

I\'m aware of the cat /proc/

Answer 1

#include 
#include 

errno = 0;
struct rusage* memory = malloc(sizeof(struct rusage));
getrusage(RUSAGE_SELF, memory);
if(errno == EFAULT)
    printf("Error: EFAULT\n");
else if(errno == EINVAL)
    printf("Error: EINVAL\n");
printf("Usage: %ld\n", memory->ru_ixrss);
printf("Usage: %ld\n", memory->ru_isrss);
printf("Usage: %ld\n", memory->ru_idrss);
printf("Max: %ld\n", memory->ru_maxrss);

I used this code but for some reason I get 0 all the time for all 4 printf()