.TH LIBSIMPLE_MALLOCZ 3 2018-11-03 libsimple
.SH NAME
libsimple_mallocz \- allocate optionally initialised memory
.SH SYNOPSIS
.nf
#include <libsimple.h>
static inline void *libsimple_mallocz(int \fIclear\fP, size_t \fIn\fP);
static inline void *libsimple_enmallocz(int \fIstatus\fP, int \fIclear\fP, size_t \fIn\fP);
static inline void *libsimple_emallocz(int \fIclear\fP, size_t \fIn\fP);
#ifndef mallocz
# define mallocz libsimple_mallocz
#endif
#ifndef enmallocz
# define enmallocz libsimple_enmallocz
#endif
#ifndef emallocz
# define emallocz libsimple_emallocz
#endif
.fi
.PP
Link with
.IR \-lsimple .
.SH DESCRIPTION
The
.BR libsimple_mallocz (),
.BR libsimple_enmallocz (),
and
.BR libsimple_emallocz ()
functions are wrappers for the
.BR malloc (3)
and
.BR calloc (3)
functions, they allocate
.I n
bytes to the heap and return a pointer with an
alignment of
.I alignof(max_align_t)
to the allocated memory. The memory will be
initialised with zeroes if
.I clear
is a non-zero value. The function
.BR free (3)
shall be called with the returned pointer as
input when the allocated memory is no longer needed.
.PP
The
.BR libsimple_enmallocz ()
and
.BR libsimple_emallocz ()
functions will terminate the process if the memory
cannot be allocated (or if
.I n
is 0 and
.BR malloc (3)
and
.BR calloc (3)
returns
.B NULL
when it is used to allocate 0 bytes), by calling the
.BR libsimple_enprintf ()
and
.BR libsimple_eprintf ()
functions, respectively.
On failure, the process's exit value will be
.I status
if the
.BR libsimple_enmallocz ()
function is used or
.IR libsimple_default_failure_exit (3)
if the
.BR libsimple_emallocz ()
function is used.
.PP
The
.BR libsimple_enmallocz ()
and
.BR libsimple_emallocz ()
functions behaviour is unspecified if
.I n
is 0.
.SH RETURN VALUE
The
.BR libsimple_mallocz (),
.BR libsimple_enmallocz (),
and
.BR libsimple_emallocz ()
functions return a pointer to the allocated memory
upon success completion; otherwise the
.BR libsimple_mallocz ()
function return
.B NULL
and set
.I errno
it indicate the error, and the
.BR libsimple_enmallocz ()
and
.BR libsimple_emallocz ()
functions terminated the process.
.SH ERRORS
The
.BR libsimple_mallocz ()
function will fail for the reasons specified for the
.BR malloc (3)
and
.BR calloc (3)
functions.
.PP
The
.BR libsimple_enmallocz ()
and
.BR libsimple_emallocz ()
functions will terminate the process on failure.
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lb lb lb
l l l.
Interface Attribute Value
T{
.BR libsimple_mallocz (),
.br
.BR libsimple_enmallocz (),
.br
.BR libsimple_emallocz ()
T} Thread safety MT-Safe
T{
.BR libsimple_mallocz (),
.br
.BR libsimple_enmallocz (),
.br
.BR libsimple_emallocz ()
T} Async-signal safety AS-Safe
T{
.BR libsimple_mallocz (),
.br
.BR libsimple_enmallocz (),
.br
.BR libsimple_emallocz ()
T} Async-cancel safety AC-Safe
.TE
.SH EXAMPLES
None.
.SH APPLICATION USAGE
None.
.SH RATIONALE
None.
.SH FUTURE DIRECTIONS
None.
.SH NOTES
None.
.SH BUGS
None.
.SH SEE ALSO
.BR libsimple_enmalloc (3),
.BR libsimple_vmallocn (3),
.BR libsimple_vmalloczn (3),
.BR libsimple_encalloc (3),
.BR libsimple_vcallocn (3),
.BR libsimple_enrealloc (3),
.BR libsimple_reallocarray (3),
.BR libsimple_vreallocn (3),
.BR libsimple_reallocf (3),
.BR libsimple_reallocarrayf (3),
.BR libsimple_vreallocfn (3),
.BR libsimple_aligned_realloc (3),
.BR libsimple_aligned_reallocarray (3),
.BR libsimple_aligned_vreallocn (3),
.BR libsimple_aligned_reallocf (3),
.BR libsimple_aligned_reallocarrayf (3),
.BR libsimple_aligned_vreallocfn (3),
.BR libsimple_memalign (3),
.BR libsimple_memalignz (3),
.BR libsimple_vmemalignn (3),
.BR libsimple_vmemalignzn (3),
.BR libsimple_enposix_memalign (3),
.BR libsimple_posix_memalignz (3),
.BR libsimple_vposix_memalignn (3),
.BR libsimple_vposix_memalignzn (3),
.BR libsimple_enaligned_alloc (3),
.BR libsimple_aligned_allocz (3),
.BR libsimple_valigned_allocn (3),
.BR libsimple_valigned_alloczn (3),
.BR libsimple_pvalloc (3),
.BR libsimple_pvallocz (3),
.BR libsimple_vpvallocn (3),
.BR libsimple_vpvalloczn (3),
.BR libsimple_valloc (3),
.BR libsimple_vallocz (3),
.BR libsimple_vvallocn (3),
.BR libsimple_vvalloczn (3),
.BR libsimple_vmemalloc (3),
.BR libsimple_varrayalloc (3),
.BR malloc (3),
.BR calloc (3)
