*
* LTTNG_OPTIONAL_UNSET(&foo.b);
*/
-#define LTTNG_OPTIONAL(type) \
- struct { \
+#define LTTNG_OPTIONAL(type) \
+ struct { \
uint8_t is_set; \
- type value; \
+ type value; \
}
/*
* Since this returns the 'optional' by value, it is not suitable for all
* wrapped optional types. It is meant to be used with PODs.
*/
-#define LTTNG_OPTIONAL_GET(optional) \
- ({ \
- LTTNG_ASSERT((optional).is_set); \
- (optional).value; \
+#define LTTNG_OPTIONAL_GET(optional) \
+ ({ \
+ LTTNG_ASSERT((optional).is_set); \
+ (optional).value; \
})
/*
* an optional value is set to LTTNG_ASSERT() that it is set when fecthing the
* underlying value's address.
*/
-#define LTTNG_OPTIONAL_GET_PTR(optional) \
- ({ \
- LTTNG_ASSERT((optional).is_set); \
- &(optional).value; \
+#define LTTNG_OPTIONAL_GET_PTR(optional) \
+ ({ \
+ LTTNG_ASSERT((optional).is_set); \
+ &(optional).value; \
})
/*
* The wrapped field is set to the value it would gave if it had static storage
* duration.
*/
-#define LTTNG_OPTIONAL_INIT_UNSET {}
+#define LTTNG_OPTIONAL_INIT_UNSET \
+ { \
+ }
/*
* Initialize an optional field as 'set' with a given value.
}
/* Set the value of an optional field. */
-#define LTTNG_OPTIONAL_SET(field_ptr, val) \
- do { \
- (field_ptr)->is_set = 1; \
- (field_ptr)->value = (val); \
+#define LTTNG_OPTIONAL_SET(field_ptr, val) \
+ do { \
+ (field_ptr)->is_set = 1; \
+ (field_ptr)->value = (val); \
} while (0)
/* Put an optional field in the "unset" (NULL-ed) state. */
-#define LTTNG_OPTIONAL_UNSET(field_ptr) \
- do { \
- (field_ptr)->is_set = 0; \
+#define LTTNG_OPTIONAL_UNSET(field_ptr) \
+ do { \
+ (field_ptr)->is_set = 0; \
} while (0)
#endif /* LTTNG_OPTIONAL_H */