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
|
.TH LIBSIMPLE_VREALLOCFN 3 libsimple
.SH NAME
libsimple_vreallocfn \- reallocate memory
.SH SYNOPSIS
.nf
#include <libsimple.h>
inline void *libsimple_vreallocfn(void *\fIptr\fP, size_t \fIn\fP, va_list \fIap\fP);
inline void *libsimple_reallocfn(void *\fIptr\fP, size_t \fIn\fP, ..., /* (size_t)0 */);
#ifndef vreallocfn
# define vreallocfn libsimple_vreallocfn
#endif
#ifndef reallocfn
# define reallocfn libsimple_reallocfn
#endif
.fi
.PP
Link with
.IR \-lsimple .
.SH DESCRIPTION
The
.BR libsimple_reallocfn ()
function is a wrapper for the
.BR realloc (3)
function, it reallocate memory allocated on
the heap and return the older pointer or a new
pointer with the alignment of
.I alignof(max_align_t)
to the allocated memory of
.I N
bytes, 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 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
uninitialised if it is larger. If a new pointer
is returned, rather than
.IR ptr ,
.I ptr
is deallocated;
.I ptr
is also 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_vreallocfn ()
function is a version of the
.BR libsimple_reallocfn ()
function that use
.B va_list
instead of variadic arguments.
.SH RETURN VALUE
The
.BR libsimple_vreallocfn ()
and
.BR libsimple_reallocfn (),
functions return a pointer to the allocated memory
upon success completion; otherwise the
.BR libsimple_vreallocfn ()
and
.BR libsimple_reallocfn ()
functions return
.B NULL
and set
.I errno
it indicate the error.
.SH ERRORS
The
.BR libsimple_vreallocn (),
.BR libsimple_reallocn ()
function will fail for the reasons specified for the
.BR realloc (3)
function, and if:
.TP
.B EINVAL
.I n
is 0.
.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_vreallocfn (),
.br
.BR libsimple_reallocfn ()
T} Thread safety MT-Safe
T{
.BR libsimple_vreallocfn (),
.br
.BR libsimple_reallocfn ()
T} Async-signal safety AS-Safe
T{
.BR libsimple_vreallocfn (),
.br
.BR libsimple_reallocfn ()
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_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)
|
