1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
.TH LIBSIMPLE_VPOSIX_MEMALIGNN 3 libsimple
.SH NAME
libsimple_vposix_memalignn \- allocate memory with custom alignment
.SH SYNOPSIS
.nf
#include <libsimple.h>
static inline int libsimple_vposix_memalignn(void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, va_list \fIap\fP);
static inline void libsimple_envposix_memalignn(int \fIstatus\fP, void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, va_list \fIap\fP);
static inline void libsimple_evposix_memalignn(void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, va_list \fIap\fP);
static inline int libsimple_posix_memalignn(void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, ..., /* (size_t)0 */);
static inline void libsimple_enposix_memalignn(int \fIstatus\fP, void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, ..., /* (size_t)0 */);
static inline void libsimple_eposix_memalignn(void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP, ..., /* (size_t)0 */);
#ifndef vposix_memalignn
# define vposix_memalignn libsimple_vposix_memalignn
#endif
#ifndef envposix_memalignn
# define envposix_memalignn libsimple_envposix_memalignn
#endif
#ifndef evposix_memalignn
# define evposix_memalignn libsimple_evposix_memalignn
#endif
#ifndef posix_memalignn
# define posix_memalignn libsimple_posix_memalignn
#endif
#ifndef enposix_memalignn
# define enposix_memalignn libsimple_enposix_memalignn
#endif
#ifndef eposix_memalignn
# define eposix_memalignn libsimple_eposix_memalignn
#endif
.fi
.PP
Link with
.IR \-lsimple .
.SH DESCRIPTION
The
.BR libsimple_posix_memalignn (),
.BR libsimple_enposix_memalignn (),
and
.BR libsimple_eposix_memalignn ()
functions allocate
.I N
uninitialised bytes to the heap and store a
pointer with an alignment of
.I alignment
bytes to the allocated memory in
.IR memptr ,
where
.I N
is the product of
.I n
and all following arguments (which should have the type
.BR size_t )
up to the first 0;
.I n
must not be 0. 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_memalignn ()
and
.BR libsimple_eposix_memalignn ()
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_enposix_memalignn ()
function is used or
.IR libsimple_default_failure_exit (3)
if the
.BR libsimple_eposix_memalignn ()
function is used.
.PP
The
.BR libsimple_vposix_memalignn (),
.BR libsimple_envposix_memalignn (),
and
.BR libsimple_evposix_memalignn ()
functions are versions of the
.BR libsimple_posix_memalignn (),
.BR libsimple_enposix_memalignn (),
and
.BR libsimple_eposix_memalignn (),
respectively, that use
.B va_list
instead of variadic arguments.
.SH RETURN VALUE
The
.BR libsimple_vposix_memalignn ()
and
.BR libsimple_posix_memalignn ()
functions return 0 upon successful completion;
otherwise an error code is returned to indicate
the error.
.PP
The
.BR libsimple_envposix_memalignn (),
.BR libsimple_evposix_memalignn (),
.BR libsimple_enposix_memalignn (),
and
.BR libsimple_eposix_memalignn ()
functions to not return a value, but
terminated the process on failure.
.SH ERRORS
The
.BR libsimple_vposix_memalignn (),
.BR libsimple_posix_memalignn ()
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_envposix_memalignn (),
.BR libsimple_evposix_memalignn (),
.BR libsimple_enposix_memalignn (),
and
.BR libsimple_eposix_memalignn ()
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_vposix_memalignn (),
.br
.BR libsimple_envposix_memalignn (),
.br
.BR libsimple_evposix_memalignn (),
.br
.BR libsimple_posix_memalignn (),
.br
.BR libsimple_enposix_memalignn (),
.br
.BR libsimple_eposix_memalignn ()
T} Thread safety MT-Safe
T{
.BR libsimple_vposix_memalignn (),
.br
.BR libsimple_envposix_memalignn (),
.br
.BR libsimple_evposix_memalignn (),
.br
.BR libsimple_posix_memalignn (),
.br
.BR libsimple_enposix_memalignn (),
.br
.BR libsimple_eposix_memalignn ()
T} Async-signal safety AS-Safe
T{
.BR libsimple_vposix_memalignn (),
.br
.BR libsimple_envposix_memalignn (),
.br
.BR libsimple_evposix_memalignn (),
.br
.BR libsimple_posix_memalignn (),
.br
.BR libsimple_enposix_memalignn (),
.br
.BR libsimple_eposix_memalignn ()
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_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_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 posix_memalign (3)
|
