HP-UX 11i June 2001 Release Notes

Programming
Libraries
Chapter 13266
cached. ISVs whose applications are very memory intensive may want to
configure only a minimum-sized or very small ordinary cache when
experimenting with this feature.
malloc() thread-private cache does not change the function of
malloc() for nonthreaded or cma threaded applications. It does
maintain binary compatibility. However, because it is a change in
allocation policy, it can cause different sequences of addresses to be
emitted for the same sequence of requests than a previous version of
malloc would have emitted. This level of compatibility is more stringent
than ordinary binary compatibility and has never been guaranteed
across releases of malloc.
The libcres.a Library
libcres.a is a small archive library provided at 11i.
libcres.a contains string, memory and other functions, to provide
customers running performance-critical applications with the benefit of a
static link.
Linking statically with libc is not a supported method of linking an
application. Any performance improvement is highly dependent on the
application’s use of the included functions. The functions included in this
library are:
abs(), bsearch(), div(), ffs(), insque(), labs(), ldiv(),
memchr(), memcmp(), memcpy(), memmove(), memset(), strcat(),
strchr(), strcmp(), strcpy(), strcspn(), strlen(),
strncat(), strncmp(), strcpy(), strrchr(), strspn(),
strstr(), swab()
The libcres.a (5) manpage describes its use more thoroughly.
To make use of this library, existing makefiles must be modified to
include it on the link line. Existing applications must be re-linked to use
this library.
The modules of this library are compiled with the HP optimizing
compiler using a +O4 flag. As a result, the applications using this
library can be linked only by using the HP optimizing compiler.
The functions in this library cannot be overwritten with a user-defined
function of the same name, as is the case today with libc names. If this
library is used, user libraries cannot contain identically named functions
or unexpected results may occur.