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
|
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include "xmalloc.h"
#include "debug.h"
#include "xsnprintf.h"
static void *
check_alloc(void *alloc)
{
if (unlikely(alloc == NULL)) {
FATAL_ERROR(__func__, ENOMEM);
}
return alloc;
}
void *
xmalloc(size_t size)
{
xassert(size != 0);
return check_alloc(malloc(size));
}
void *
xcalloc(size_t nmemb, size_t size)
{
xassert(size != 0);
return check_alloc(calloc(likely(nmemb) ? nmemb : 1, size));
}
void *
xrealloc(void *ptr, size_t size)
{
xassert(size != 0);
return check_alloc(realloc(ptr, size));
}
void *
xreallocarray(void *ptr, size_t nmemb, size_t size)
{
xassert(nmemb != 0 && size != 0);
return check_alloc(reallocarray(ptr, nmemb, size));
}
char *
xstrdup(const char *str)
{
return check_alloc(strdup(str));
}
char *
xstrndup(const char *str, size_t n)
{
return check_alloc(strndup(str, n));
}
char32_t *
xc32dup(const char32_t *str)
{
return check_alloc(c32dup(str));
}
static VPRINTF(1) XMALLOC char *
xvasprintf(const char *format, va_list ap)
{
va_list ap2;
va_copy(ap2, ap);
int n = vsnprintf(NULL, 0, format, ap2);
va_end(ap2);
if (unlikely(n < 0 || n == INT_MAX)) {
FATAL_ERROR(__func__, n < 0 ? errno : EOVERFLOW);
}
char *str = xmalloc(n + 1);
size_t m = xvsnprintf(str, n + 1, format, ap);
xassert(m == n);
return str;
}
char *
xasprintf(const char *format, ...)
{
va_list ap;
va_start(ap, format);
char *str = xvasprintf(format, ap);
va_end(ap);
return str;
}
|
