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Diffstat (limited to 'man/libsimple_posix_memalignz.3')
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diff --git a/man/libsimple_posix_memalignz.3 b/man/libsimple_posix_memalignz.3 new file mode 100644 index 0000000..83f2d67 --- /dev/null +++ b/man/libsimple_posix_memalignz.3 @@ -0,0 +1,185 @@ +.TH LIBSIMPLE_POSIX_MEMALIGNZ 3 2018-11-03 libsimple +.SH NAME +libsimple_posix_memalignz \- allocate optionally initialised memory with custom alignment +.SH SYNOPSIS +.nf +#include <libsimple.h> + +static inline int libsimple_posix_memalignz(void **\fImemptr\fP, int \fIclear\fP, size_t \fIalignment\fP, size_t \fIn\fP); +void libsimple_enposix_memalignz(int \fIstatus\fP, void **\fImemptr\fP, int \fIclear\fP, size_t \fIalignment\fP, size_t \fIn\fP); +static inline void libsimple_eposix_memalignz(void **\fImemptr\fP, int \fIclear\fP, size_t \fIalignment\fP, size_t \fIn\fP); + +#ifndef posix_memalignz +# define posix_memalignz libsimple_posix_memalignz +#endif +#ifndef enposix_memalignz +# define enposix_memalignz libsimple_enposix_memalignz +#endif +#ifndef eposix_memalignz +# define eposix_memalignz libsimple_eposix_memalignz +#endif +.fi +.PP +Link with +.IR \-lsimple . +.SH DESCRIPTION +The +.BR libsimple_posix_memalignz (), +.BR libsimple_enposix_memalignz (), +and +.BR libsimple_eposix_memalignz () +functions allocate +.I n +bytes to the heap and store a pointer with an +alignment of +.I alignment +bytes to the allocated memory in +.IR memptr . +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 pointer stored in +.I memptr +as input when the allocated memory is no longer needed. +.I *memptr +remains unmodified on failure. +.PP +The +.BR libsimple_enposix_memalignz () +and +.BR libsimple_eposix_memalignz () +functions will terminate the process if the memory +cannot be allocated of if the user tries 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_enposix_memalignz () +function is used or +.IR libsimple_default_failure_exit (3) +if the +.BR libsimple_eposix_memalignz () +function is used. +.PP +The +.BR libsimple_enposix_memalignz () +and +.BR libsimple_eposix_memalignz () +functions behaviour is unspecified if +.I n +is 0. +.SH RETURN VALUE +The +.BR libsimple_posix_memalignz () +function returns 0 upon successful completion; +otherwise an error code is returned to indicate +the error. +.PP +The +.BR libsimple_enposix_memalignz () +and +.BR libsimple_eposix_memalignz () +functions do not return a value, but +terminated the process on failure. +.SH ERRORS +The +.BR libsimple_posix_memalignz () +function will fail if: +.TP +.B EINVAL +.I n +is 0. +.TP +.B EINVAL +.I alignment +is not a power of two. +.TP +.B EINVAL +.I alignment +is not a multiple of +.IR "sizeof(void *)" . +.TP +.B ENOMEM +Enough memory could not be allocated. +.PP +The +.BR libsimple_enposix_memalignz () +and +.BR libsimple_eposix_memalignz () +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_posix_memalignz (), +.br +.BR libsimple_enposix_memalignz (), +.br +.BR libsimple_eposix_memalignz () +T} Thread safety MT-Safe +T{ +.BR libsimple_posix_memalignz (), +.br +.BR libsimple_enposix_memalignz (), +.br +.BR libsimple_eposix_memalignz () +T} Async-signal safety AS-Safe +T{ +.BR libsimple_posix_memalignz (), +.br +.BR libsimple_enposix_memalignz (), +.br +.BR libsimple_eposix_memalignz () +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_mallocz (3), +.BR libsimple_vmallocn (3), +.BR libsimple_vmalloczn (3), +.BR libsimple_encalloc (3), +.BR libsimple_vcallocn (3), +.BR libsimple_enrealloc (3), +.BR libsimple_vreallocn (3), +.BR libsimple_memalign (3), +.BR libsimple_memalignz (3), +.BR libsimple_vmemalignn (3), +.BR libsimple_vmemalignzn (3), +.BR libsimple_enposix_memalign (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 posix_memalign (3) |