GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
XtMalloc(3) XT FUNCTIONS XtMalloc(3)

XtMalloc, XtCalloc, XtRealloc, XtFree, XtNew, XtNewString - memory management functions

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);
Cardinal XtAsprintf(String *new_string, const char *format, ...);

num
Specifies the number of bytes or array elements.
ptr
Specifies a pointer to the old storage or to the block of storage that is to be freed.
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.
new_string
Specifies a pointer to write a newly allocated string to.
format
Specifies a formatting string as defined by sprintf(3c)

The XtMalloc 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, XtMalloc calls XtErrorMsg.
The XtCalloc 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, XtCalloc calls XtErrorMsg.
The XtRealloc 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, XtRealloc calls XtErrorMsg. If ptr is NULL, XtRealloc allocates the new storage without copying the old contents; that is, it simply calls XtMalloc.
The XtFree function returns storage and allows it to be reused. If ptr is NULL, XtFree returns immediately.
XtNew returns a pointer to the allocated storage. If there is insufficient memory to allocate the new block, XtNew calls XtErrorMsg. XtNew is a convenience macro that calls XtMalloc with the following arguments specified:
((type *) XtMalloc((unsigned) sizeof(type))
 

XtNewString returns a pointer to the allocated storage. If there is insufficient memory to allocate the new block, XtNewString calls XtErrorMsg. XtNewString is a convenience macro that calls XtMalloc with the following arguments specified:
(strcpy(XtMalloc((unsigned) strlen(str) + 1), str))
 

The XtAsprintf function allocates space for a string large enough to hold the string specified by the sprintf(3c) format pattern when used with the remaining arguments, and fills it with the formatted results. The address of the allocated string is placed into the pointer passed as ret. The length of the string (not including the terminating null byte) is returned. If there is insufficient memory to allocate the new block, XtAsprintf calls XtErrorMsg.

X Toolkit Intrinsics - C Language Interface
 
Xlib - C Language X Interface
libXt 1.1.5 X Version 11

Search for    or go to Top of page |  Section 3 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.