ksize(9) [centos man page]

KSIZE(9)						    Memory Management in Linux							  KSIZE(9)

NAME

       ksize - get the actual amount of memory allocated for a given object

SYNOPSIS

       size_t ksize(const void * objp);

ARGUMENTS

       objp
	   Pointer to the object

DESCRIPTION

       kmalloc may internally round up allocations and return more memory than requested.  ksize can be used to determine the actual amount of
       memory allocated. The caller may use this additional memory, even though a smaller amount of memory was initially specified with the
       kmalloc call. The caller must guarantee that objp points to a valid object previously allocated with either kmalloc or kmem_cache_alloc.
       The object must not be freed during the duration of the call.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014								  KSIZE(9)

Ns_Alloc(3aolserver)					   AOLserver Library Procedures 				      Ns_Alloc(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME

       ns_calloc, ns_free, ns_malloc, ns_realloc - Memory allocation functions

SYNOPSIS

       #include "ns.h"

       void *
       ns_calloc(size_t num, size_t esize)

       void
       ns_free(void *ptr)

       void *
       ns_malloc(size_t size)

       void *
       ns_realloc(void *ptr, size_t size)
_________________________________________________________________

DESCRIPTION

       The  AOLserver  memory  storage allocation code was moved into Tcl core beginning with Tcl 8.4.0. Starting with AOLserver 3.5, these memory
       allocation functions are wrappers that call Tcl_Alloc and Tcl_Free. Earlier versions of AOLserver used this fast memory	storage  allocator
       internally, or the platform's memory allocator depending on how you configured it.

       The  actual  amount  of	memory allocated or freed will be different from the requested amount.	This is because the fast memory allocation
       code pools memory into chunks and manages that memory internally.  In addition, the Tcl distribution may be compiled to allocate even  more
       memory  which  is used internally for diagnostic reasons. Using ns_free to free memory created by routines other than ns_malloc, ns_realloc
       and ns_calloc will almost certainly result in segmentation faults or undefined behavior.

       The lowercase and mixed-case versions are identical; the lowercase versions are preferred.

       ns_calloc(num, esize)
	      Allocates a block of memory that is num * esize large, zeros it, and returns a pointer to the beginning of the memory block or  NULL
	      if the operation fails.

       ns_free(ptr)
	      ns_free() frees the memory space pointed to by ptr. This pointer must have been created with a previous call to ns_malloc(), ns_cal-
	      loc() or ns_realloc().  If ptr is NULL, no operation is performed. ns_free() returns no value.

       ns_malloc(size)
	      ns_malloc() allocates size bytes and returns a pointer to the allocated memory.  The memory is not cleared. The value returned is  a
	      pointer to the allocated memory or NULL if the request fails.  The memory must be freed by ns_free.

       ns_realloc(ptr, size)
	      ns_realloc  changes  the size of the memory block pointed to by ptr to size bytes.  The contents will be unchanged to the minimum of
	      the old and new sizes. Newly allocated memory will be uninitialized.  If ptr is NULL, the call is equivalent to ns_malloc(size);	if
	      size is equal to zero, the call is equivalent to ns_free(ptr).  Unless ptr is NULL, it must have been returned by an earlier call to
	      ns_malloc(), ns_calloc() or ns_realloc().

SEE ALSO

       Tcl_Alloc(3), Tcl_Free(3)

KEYWORDS

       memory, allocation

AOLserver								4.0						      Ns_Alloc(3aolserver)