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| -rw-r--r-- | man3/libsimple_aligned_realloc.3 | 200 |
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diff --git a/man3/libsimple_aligned_realloc.3 b/man3/libsimple_aligned_realloc.3 new file mode 100644 index 0000000..1cede46 --- /dev/null +++ b/man3/libsimple_aligned_realloc.3 @@ -0,0 +1,200 @@ +.TH LIBSIMPLE_ALIGNED_REALLOC 3 2018-11-29 libsimple +.SH NAME +libsimple_aligned_realloc \- reallocate memory and customise alignment +.SH SYNOPSIS +.nf +#include <libsimple.h> + +static inline void *libsimple_aligned_realloc(void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP); +void *libsimple_enaligned_realloc(int \fIstatus\fP, void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP); +static inline void *libsimple_ealigned_realloc(void *\fIptr\fP, size_t \fIalignment\fP, size_t \fIn\fP); + +#ifndef aligned_realloc +# define aligned_realloc libsimple_aligned_realloc +#endif +#ifndef enaligned_realloc +# define enaligned_realloc libsimple_enaligned_realloc +#endif +#ifndef ealigned_realloc +# define ealigned_realloc libsimple_ealigned_realloc +#endif +.fi +.PP +Link with +.IR \-lsimple . +.SH DESCRIPTION +The +.BR libsimple_aligned_realloc (), +.BR libsimple_enaligned_realloc (), +and +.BR libsimple_ealigned_realloc () +functions reallocate memory allocated on +the heap and return the older pointer or a new +pointer with the alignment of +.I alignment +to the allocated memory of +.I n +bytes. The behaviour is unspecified if +.I n +is 0. The returned pointer will contain the +same content as +.IR ptr , +but truncated to +.I n +bytes if it is smaller or with the new bytes +unitialised if it is larger. If a new pointer +is returned, rather than +.IR ptr , +.I ptr +is deallocated; +.I ptr +is not deallocated on failure. 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_enaligned_realloc () +and +.BR libsimple_ealigned_realloc () +functions will terminate the process if the memory +cannot be allocated, 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_enaligned_realloc () +function is used or +.IR libsimple_default_failure_exit (3) +if the +.BR libsimple_ealigned_realloc () +function is used. +.SH RETURN VALUE +The +.BR libsimple_aligned_realloc (), +.BR libsimple_enaligned_realloc (), +and +.BR libsimple_ealigned_realloc () +functions return a pointer to the allocated memory +upon success completion; otherwise the +.BR libsimple_aligned_realloc () +function returns +.B NULL +and set +.I errno +it indicate the error, and the +.BR libsimple_enaligned_realloc () +and +.BR libsimple_ealigned_realloc () +functions terminated the process. +.SH ERRORS +The +.BR libsimple_aligned_realloc () +function will fail for the reasons specified for the +.BR realloc (3) +function, and if: +.TP +.B EINVAL +.I alignment +is an invalid alignment (usually it needs to be an power of 2). +.TP +.B ENOSYS +The function is not implemented. The function requires +non-standard libc functions, and is therefore not supported +for all libc implementations. + +The function is implemented if and only if the macro +.B LIBSIMPLE_HAVE_ALIGNED_REALLOC +is defined by the library. +.PP +The +.BR libsimple_enaligned_realloc () +and +.BR libsimple_ealigned_realloc () +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_aligned_realloc (), +.br +.BR libsimple_enaligned_realloc (), +.br +.BR libsimple_ealigned_realloc () +T} Thread safety MT-Safe +T{ +.BR libsimple_aligned_realloc (), +.br +.BR libsimple_enaligned_realloc (), +.br +.BR libsimple_ealigned_realloc () +T} Async-signal safety AS-Safe +T{ +.BR libsimple_aligned_realloc (), +.br +.BR libsimple_enaligned_realloc (), +.br +.BR libsimple_ealigned_realloc () +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_reallocarray (3), +.BR libsimple_vreallocn (3), +.BR libsimple_reallocf (3), +.BR libsimple_reallocarrayf (3), +.BR libsimple_vreallocfn (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) |