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rotation-api: introduce rotation schedule descriptors
[lttng-tools.git]
/
src
/
common
/
macros.h
diff --git
a/src/common/macros.h
b/src/common/macros.h
index 0e11d3c7ac2f8179ea98bda74293c91158d6b2c2..28c21d5b8188ebd786d710cba5c1ceba8132154e 100644
(file)
--- a/
src/common/macros.h
+++ b/
src/common/macros.h
@@
-20,6
+20,7
@@
#define _MACROS_H
#include <stdlib.h>
#define _MACROS_H
#include <stdlib.h>
+#include <stddef.h>
#include <string.h>
#include <common/compat/string.h>
#include <string.h>
#include <common/compat/string.h>
@@
-58,6
+59,14
@@
void *zmalloc(size_t len)
#define ARRAY_SIZE(array) (sizeof(array) / (sizeof((array)[0])))
#endif
#define ARRAY_SIZE(array) (sizeof(array) / (sizeof((array)[0])))
#endif
+#ifndef container_of
+#define container_of(ptr, type, member) \
+ ({ \
+ const typeof(((type *)NULL)->member) * __ptr = (ptr); \
+ (type *)((char *)__ptr - offsetof(type, member)); \
+ })
+#endif
+
#ifndef max
#define max(a, b) ((a) > (b) ? (a) : (b))
#endif
#ifndef max
#define max(a, b) ((a) > (b) ? (a) : (b))
#endif
@@
-74,10
+83,19
@@
void *zmalloc(size_t len)
#define LTTNG_PACKED __attribute__((__packed__))
#endif
#define LTTNG_PACKED __attribute__((__packed__))
#endif
-#ifndef LTTNG_HIDDEN
+/*
+ * LTTNG_HIDDEN: set the hidden attribute for internal functions
+ * On Windows, symbols are local unless explicitly exported,
+ * see https://gcc.gnu.org/wiki/Visibility
+ */
+#if defined(_WIN32) || defined(__CYGWIN__)
+#define LTTNG_HIDDEN
+#else
#define LTTNG_HIDDEN __attribute__((visibility("hidden")))
#endif
#define LTTNG_HIDDEN __attribute__((visibility("hidden")))
#endif
+#define member_sizeof(type, field) sizeof(((type *) 0)->field)
+
/*
* lttng_strncpy returns 0 on success, or nonzero on failure.
* It checks that the @src string fits into @dst_len before performing
/*
* lttng_strncpy returns 0 on success, or nonzero on failure.
* It checks that the @src string fits into @dst_len before performing
@@
-88,17
+106,11
@@
void *zmalloc(size_t len)
static inline
int lttng_strncpy(char *dst, const char *src, size_t dst_len)
{
static inline
int lttng_strncpy(char *dst, const char *src, size_t dst_len)
{
- if (lttng_strnlen(src, dst_len)
=
= dst_len) {
+ if (lttng_strnlen(src, dst_len)
>
= dst_len) {
/* Fail since copying would result in truncation. */
return -1;
}
/* Fail since copying would result in truncation. */
return -1;
}
- strncpy(dst, src, dst_len);
- /*
- * Be extra careful and put final \0 at the end after strncpy(),
- * even though we checked the length before. This makes Coverity
- * happy.
- */
- dst[dst_len - 1] = '\0';
+ strcpy(dst, src);
return 0;
}
return 0;
}
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