Memory usage of current process in C

scotts_69079 0
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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/<your pid>/status method of getting memory usage, but I have no idea how to capture that in C.

BTW, it's for a PHP extension I'm modifying (granted, I'm a C newbie). If there are shortcuts available within the PHP extension API, that would be even more helpful.

php-extension memory memory-management linux c
7 Answers
#include <sys/resource.h>
#include <errno.h>

errno = 0;
struct rusage memory;
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()

user_2352390
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