X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Foptional.h;h=dcb7ca8639fd67ddac916ea84816e24e0b2b2b5e;hb=48a4000561343808724f7cb5fa8c131877489ccd;hp=faa64bf604e424adc2aefcda50b044c028c0a507;hpb=a321667af6f25a77e32787fe89ad306786f7b29a;p=lttng-tools.git diff --git a/src/common/optional.h b/src/common/optional.h index faa64bf60..dcb7ca863 100644 --- a/src/common/optional.h +++ b/src/common/optional.h @@ -9,7 +9,6 @@ #define LTTNG_OPTIONAL_H #include -#include /* * Define wrapper structure representing an optional value. @@ -56,35 +55,40 @@ /* * This macro is available as a 'convenience' to allow sites that assume - * an optional value is set to assert() that it is set when accessing it. + * an optional value is set to LTTNG_ASSERT() that it is set when accessing it. * * 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) \ ({ \ - assert((optional).is_set); \ + LTTNG_ASSERT((optional).is_set); \ (optional).value; \ }) /* * This macro is available as a 'convenience' to allow sites that assume - * an optional value is set to assert() that it is set when fecthing the + * 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) \ ({ \ - assert((optional).is_set); \ + LTTNG_ASSERT((optional).is_set); \ &(optional).value; \ }) /* - * Initialize an optional field. + * Initialize an optional field as unset. * * The wrapped field is set to the value it would gave if it had static storage * duration. */ -#define LTTNG_OPTIONAL_INIT { .is_set = 0 } +#define LTTNG_OPTIONAL_INIT_UNSET { .is_set = 0 } + +/* + * Initialize an optional field as 'set' with a given value. + */ +#define LTTNG_OPTIONAL_INIT_VALUE(val) { .value = val, .is_set = 1 } /* Set the value of an optional field. */ #define LTTNG_OPTIONAL_SET(field_ptr, val) \