X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=include%2Flttng%2Ftrigger%2Ftrigger.h;h=b8e6080d9519a7edaaab43ca291c7c45f56e685d;hp=96e018f248d536eecc6c08e3c0d06f2f5a212dbc;hb=a02903c0743cebd1f51227905ee89e571b84acbc;hpb=c203f0585aa3a3b1c2b1994899b8277ed79dad2d diff --git a/include/lttng/trigger/trigger.h b/include/lttng/trigger/trigger.h index 96e018f24..b8e6080d9 100644 --- a/include/lttng/trigger/trigger.h +++ b/include/lttng/trigger/trigger.h @@ -13,6 +13,8 @@ struct lttng_action; struct lttng_condition; struct lttng_trigger; +/* A set of triggers. */ +struct lttng_triggers; #ifdef __cplusplus extern "C" { @@ -148,6 +150,33 @@ extern int lttng_register_trigger(struct lttng_trigger *trigger); */ extern int lttng_unregister_trigger(struct lttng_trigger *trigger); +/* + * Get a trigger from the set at a given index. + * + * Note that the trigger set maintains the ownership of the returned trigger. + * It must not be destroyed by the user, nor should a reference to it be held + * beyond the lifetime of the trigger set. + * + * Returns a trigger, or NULL on error. + */ +extern const struct lttng_trigger *lttng_triggers_get_at_index( + const struct lttng_triggers *triggers, unsigned int index); + +/* + * Get the number of triggers in a trigger set. + * + * Return LTTNG_TRIGGER_STATUS_OK on success, + * LTTNG_TRIGGER_STATUS_INVALID when invalid parameters are passed. + */ +extern enum lttng_trigger_status lttng_triggers_get_count( + const struct lttng_triggers *triggers, unsigned int *count); + +/* + * Destroy a trigger set. + */ +extern void lttng_triggers_destroy(struct lttng_triggers *triggers); + + #ifdef __cplusplus } #endif