x86_64 환경에서 mallinfo() 함수로 malloc()한 크기를 구하려고 합니다.

[root@SexyGirl:/root/MM] # uname -a
Linux SexyGirl 2.6.32-24-generic #38-Ubuntu SMP Mon Jul 5 09:20:59 UTC 2010 x86_64 GNU/Linux

[root@SexyGirl:/root/MM] # free -m
             total       used       free     shared    buffers     cached
Mem:     3951         570       3381             0            6            85
-/+ buffers/cache:  478      3473
Swap:         0             0           0

struct mallinfo
{
   int arena;    // non-mmapped space allocated from system
   int ordblks;  // number of free chunks
   int smblks;   // number of fastbin blocks
   int hblks;    // number of mmapped regions
   int hblkhd;   // space in mmapped regions
   int usmblks;  // maximum total allocated space
   int fsmblks;  // space available in freed fastbin blocks
   int uordblks; // total allocated space
   int fordblks; // total free space
   int keepcost; // top-most, releasable (via malloc_trim) space
};