XtMalloc
NAME
XtMalloc, XtCalloc, XtRealloc, XtFree, XtNew, XtNewString - memory management functions
SYNTAX
char *XtMalloc(Cardinal size);
char *XtCalloc(Cardinal num, Cardinal size);
char *XtRealloc(char *ptr, Cardinal num);
void XtFree(char *ptr);
type *XtNew(type);
String XtNewString(String string);
ARGUMENTS
num
Specifies the number of bytes or array elements.
ptr
Specifies a pointer .
size
Specifies the size of an array element (in bytes) or the number of bytes
desired.
string
Specifies a previously declared string.
type
Specifies a previously declared data type.
DESCRIPTION
The
functions returns a pointer to a block of storage of at least
the specified size bytes.
If there is insufficient memory to allocate the new block,
calls
The
function allocates space for the specified number of array elements
of the specified size and initializes the space to zero.
If there is insufficient memory to allocate the new block,
calls
The
function changes the size of a block of storage (possibly moving it).
Then, it copies the old contents (or as much as will fit) into the new block
and frees the old block.
If there is insufficient memory to allocate the new block,
calls
If ptr is NULL,
allocates the new storage without copying the old contents;
that is, it simply calls
The
function returns storage and allows it to be reused.
If ptr is NULL,
returns immediately.
returns a pointer to the allocated storage.
If there is insufficient memory to allocate the new block,
calls
is a convenience macro that calls
with the following arguments specified:
((type *) XtMalloc((unsigned) sizeof(type))
returns a pointer to the allocated storage.
If there is insufficient memory to allocate the new block,
calls
is a convenience macro that calls
with the following arguments specified:
(strcpy(XtMalloc((unsigned) strlen(str) + 1), str))
SEE ALSO
