2 * Copyright (C) 2015 Michael Jeanson <mjeanson@efficios.com>
3 * Copyright (C) 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
5 * SPDX-License-Identifier: MIT
9 #ifndef _COMPAT_STRING_H
10 #define _COMPAT_STRING_H
17 size_t lttng_strnlen(const char *str
, size_t max
)
19 return strnlen(str
, max
);
23 size_t lttng_strnlen(const char *str
, size_t max
)
28 end
= memchr(str
, 0, max
);
31 ret
= (size_t) (end
- str
);
38 #endif /* HAVE_STRNLEN */
42 char *lttng_strndup(const char *s
, size_t n
)
48 char *lttng_strndup(const char *s
, size_t n
)
59 navail
= strlen(s
) + 1;
60 if ((n
+ 1) < navail
) {
69 memcpy(ret
, s
, navail
);
70 ret
[navail
- 1] = '\0';
74 #endif /* HAVE_STRNDUP */
77 static inline int lttng_fls(int val
)
82 static inline int lttng_fls(int val
)
85 unsigned int x
= (unsigned int) val
;
89 if (!(x
& 0xFFFF0000U
)) {
93 if (!(x
& 0xFF000000U
)) {
97 if (!(x
& 0xF0000000U
)) {
101 if (!(x
& 0xC0000000U
)) {
105 if (!(x
& 0x80000000U
)) {
110 #endif /* HAVE_FLS */
114 void *lttng_memrchr(const void *s
, int c
, size_t n
)
116 return memrchr(s
, c
, n
);
120 void *lttng_memrchr(const void *s
, int c
, size_t n
)
124 for (i
= n
-1; i
>= 0; i
--) {
125 if (str
[i
] == (char)c
) {
126 return (void *)(str
+i
);
131 #endif /* HAVE_MEMRCHR */
133 #endif /* _COMPAT_STRING_H */
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