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Diffstat (limited to 'man3/libsimple_pvallocz.3')
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diff --git a/man3/libsimple_pvallocz.3 b/man3/libsimple_pvallocz.3 new file mode 100644 index 0000000..c758fcd --- /dev/null +++ b/man3/libsimple_pvallocz.3 @@ -0,0 +1,179 @@ +.TH LIBSIMPLE_PVALLOCZ 3 2018-11-03 libsimple +.SH NAME +libsimple_pvallocz \- allocate optionally initialised memory with page size alignment +.SH SYNOPSIS +.nf +#include <libsimple.h> + +static inline void *libsimple_pvallocz(int \fIclear\fP, size_t \fIn\fP); +static inline void *libsimple_enpvallocz(int \fIstatus\fP, int \fIclear\fP, size_t \fIn\fP); +static inline void *libsimple_epvallocz(int \fIclear\fP, size_t \fIn\fP); + +#ifndef pvallocz +# define pvallocz libsimple_pvallocz +#endif +#ifndef enpvallocz +# define enpvallocz libsimple_enpvallocz +#endif +#ifndef epvallocz +# define epvallocz libsimple_epvallocz +#endif +.fi +.PP +Link with +.IR \-lsimple . +.SH DESCRIPTION +The +.BR libsimple_pvallocz (), +.BR libsimple_enpvallocz (), +and +.BR libsimple_epvallocz () +functions allocate +.I n +bytes, rounded up to the next multiple of the page size, +to the heap and return a pointer with an alignment of +the page size 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_enpvallocz () +and +.BR libsimple_epvallocz () +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_enpvallocz () +function is used or +.IR libsimple_default_failure_exit (3) +if the +.BR libsimple_epvallocz () +function is used. +.PP +The +.BR libsimple_enpvallocz () +and +.BR libsimple_epvallocz () +functions behaviour is unspecified if +.I n +is 0. +.SH RETURN VALUE +The +.BR libsimple_pvallocz (), +.BR libsimple_enpvallocz (), +and +.BR libsimple_epvallocz () +functions return a pointer to the allocated memory +upon success completion; otherwise the +.BR libsimple_pvallocz () +function return +.B NULL +and set +.I errno +it indicate the error, and the +.BR libsimple_enpvallocz () +and +.BR libsimple_epvallocz () +functions terminated the process. +.SH ERRORS +The +.BR libsimple_pvallocz () +function will fail if: +.TP +.B EINVAL +.I n +is 0. +.TP +.B ENOMEM +Enough memory could not be allocated. +.PP +The +.BR libsimple_enpvallocz () +and +.BR libsimple_epvallocz () +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_pvallocz (), +.br +.BR libsimple_enpvallocz (), +.br +.BR libsimple_epvallocz () +T} Thread safety MT-Safe +T{ +.BR libsimple_pvallocz (), +.br +.BR libsimple_enpvallocz (), +.br +.BR libsimple_epvallocz () +T} Async-signal safety AS-Safe +T{ +.BR libsimple_pvallocz (), +.br +.BR libsimple_enpvallocz (), +.br +.BR libsimple_epvallocz () +T} Async-cancel safety AC-Safe +.TE +.SH EXAMPLES +None. +.SH APPLICATION USAGE +None. +.SH RATIONALE +None. +.SH FUTURE DIRECTIONS +None. +.SH NOTES +The GNU implementation of +.BR pvalloc (3) +is \(dqMT-Unsafe init\(dq. +.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_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_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) |