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mallocYou can get information about dynamic memory allocation by calling the
mallinfo function. This function and its associated data type
are declared in malloc.h; they are an extension of the standard
SVID/XPG version.
This structure type is used to return information about the dynamic memory allocator. It contains the following members:
int arena- This is the total size of memory allocated with
sbrkbymalloc, in bytes.int ordblks- This is the number of chunks not in use. (The memory allocator internally gets chunks of memory from the operating system, and then carves them up to satisfy individual
mallocrequests; see Efficiency and Malloc.)int smblks- This field is unused.
int hblks- This is the total number of chunks allocated with
mmap.int hblkhd- This is the total size of memory allocated with
mmap, in bytes.int usmblks- This field is unused.
int fsmblks- This field is unused.
int uordblks- This is the total size of memory occupied by chunks handed out by
malloc.int fordblks- This is the total size of memory occupied by free (not in use) chunks.
int keepcost- This is the size of the top-most releasable chunk that normally borders the end of the heap (i.e. the high end of the virtual address space's data segment).