+#ifndef container_of
+#define container_of(ptr, type, member) \
+ ({ \
+ const typeof(((type *)NULL)->member) * __ptr = (ptr); \
+ (type *)((char *)__ptr - offsetof(type, member)); \
+ })
+#endif
+
+#ifndef LTTNG_PACKED
+#define LTTNG_PACKED __attribute__((__packed__))
+#endif
+
+#ifndef LTTNG_NO_SANITIZE_ADDRESS
+#if defined(__clang__) || defined (__GNUC__)
+#define LTTNG_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
+#else
+#define LTTNG_NO_SANITIZE_ADDRESS
+#endif
+#endif
+
+#define is_signed(type) (((type) -1) < (type) 1)
+
+#define member_sizeof(type, field) sizeof(((type *) 0)->field)
+
+#define ASSERT_LOCKED(lock) LTTNG_ASSERT(pthread_mutex_trylock(&lock))
+#define ASSERT_RCU_READ_LOCKED(lock) LTTNG_ASSERT(rcu_read_ongoing())
+
+/* Attribute suitable to tag functions as having printf()-like arguments. */
+#define ATTR_FORMAT_PRINTF(_string_index, _first_to_check) \
+ __attribute__((format(printf, _string_index, _first_to_check)))
+
+/* Attribute suitable to tag functions as having strftime()-like arguments. */
+#define ATTR_FORMAT_STRFTIME(_string_index) \
+ __attribute__((format(strftime, _string_index, 0)))
+
+/* Macros used to ignore specific compiler diagnostics. */
+
+#define DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+#define DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+
+#if defined(__clang__)
+ /* Clang */
+# define DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
+# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
+ _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
+# define DIAGNOSTIC_IGNORE_LOGICAL_OP
+#else
+ /* GCC */
+# define DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT \
+ _Pragma("GCC diagnostic ignored \"-Wsuggest-attribute=format\"")
+# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
+ _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
+# define DIAGNOSTIC_IGNORE_LOGICAL_OP \
+ _Pragma("GCC diagnostic ignored \"-Wlogical-op\"")
+#endif
+
+/* Used to make specific C++ functions to C code. */
+#ifdef __cplusplus
+#define C_LINKAGE extern "C"
+#else
+#define C_LINKAGE