union {
struct {
const char **model_emf_uri;
+ void (*event_notifier_callback)(void);
} ext;
char padding[LTTNG_UST_EVENT_DESC_PADDING];
} u;
struct lttng_event;
/*
- * Filter return value masks.
+ * Bytecode interpreter return value masks.
*/
-enum lttng_filter_ret {
- LTTNG_FILTER_DISCARD = 0,
- LTTNG_FILTER_RECORD_FLAG = (1ULL << 0),
+enum lttng_bytecode_interpreter_ret {
+ LTTNG_INTERPRETER_DISCARD = 0,
+ LTTNG_INTERPRETER_RECORD_FLAG = (1ULL << 0),
/* Other bits are kept for future use. */
};
*/
struct lttng_bytecode_runtime {
/* Associated bytecode */
- struct lttng_ust_filter_bytecode_node *bc;
- uint64_t (*filter)(void *filter_data, const char *filter_stack_data);
+ struct lttng_ust_bytecode_node *bc;
+ union {
+ uint64_t (*filter)(void *interpreter_data,
+ const char *interpreter_stack_data);
+ } interpreter_funcs;
int link_failed;
struct cds_list_head node; /* list of bytecode runtime in event */
/*
- * Pointer to a `struct lttng_session`-owned and URCU-protected
- * pointer.
+ * Pointer to a URCU-protected pointer owned by an `struct
+ * lttng_session`or `struct lttng_event_notifier_group`.
*/
struct lttng_ctx **pctx;
};
/*
- * Objects in a linked-list of enablers, owned by an event.
+ * Objects in a linked-list of enablers, owned by an event or event_notifier.
+ * This is used because an event (or a event_notifier) can be enabled by more
+ * than one enabler and we want a quick way to iterate over all enablers of an
+ * object.
+ *
+ * For example, event rules "my_app:a*" and "my_app:ab*" will both match the
+ * event with the name "my_app:abc".
*/
struct lttng_enabler_ref {
struct cds_list_head node; /* enabler ref list */
/* LTTng-UST 2.1 starts here */
/* list of struct lttng_bytecode_runtime, sorted by seqnum */
- struct cds_list_head bytecode_runtime_head;
+ struct cds_list_head filter_bytecode_runtime_head;
int has_enablers_without_bytecode;
/* Backward references: list of lttng_enabler_ref (ref to enablers) */
struct cds_list_head enablers_ref_head;
int registered; /* has reg'd tracepoint probe */
};
+struct lttng_event_notifier {
+ uint64_t user_token;
+ int enabled;
+ int registered; /* has reg'd tracepoint probe */
+ struct cds_list_head filter_bytecode_runtime_head;
+ int has_enablers_without_bytecode;
+ struct cds_list_head enablers_ref_head;
+ const struct lttng_event_desc *desc;
+ struct cds_hlist_node hlist; /* hashtable of event_notifiers */
+ struct cds_list_head node; /* event_notifier list in session */
+ struct lttng_event_notifier_group *group; /* weak ref */
+};
+
struct lttng_enum {
const struct lttng_enum_desc *desc;
struct lttng_session *session;
struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE];
};
+#define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12
+#define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
+struct lttng_ust_event_notifier_ht {
+ struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE];
+};
+
#define LTTNG_UST_ENUM_HT_BITS 12
#define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS)
struct lttng_ctx *ctx; /* contexts for filters. */
};
+struct lttng_event_notifier_group {
+ int objd;
+ void *owner;
+ int notification_fd;
+ struct cds_list_head node; /* Event notifier group handle list */
+ struct cds_list_head enablers_head;
+ struct cds_list_head event_notifiers_head; /* list of event_notifiers */
+ struct lttng_ust_event_notifier_ht event_notifiers_ht; /* hashtable of event_notifiers */
+ struct lttng_ctx *ctx; /* contexts for filters. */
+};
+
struct lttng_transport {
char *name;
struct cds_list_head node;
int lttng_session_statedump(struct lttng_session *session);
void lttng_session_destroy(struct lttng_session *session);
+void lttng_event_notifier_notification_send(
+ struct lttng_event_notifier *event_notifier);
+
struct lttng_channel *lttng_channel_create(struct lttng_session *session,
const char *transport_name,
void *buf_addr,
lttng_ust_field_list_get_iter_next(struct lttng_ust_field_list *list);
void lttng_free_event_filter_runtime(struct lttng_event *event);
-void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime);
struct cds_list_head *lttng_get_probe_list_head(void);
int lttng_session_active(void);
struct lttng_ust_excluder_node *excluder);
void lttng_enabler_event_link_bytecode(struct lttng_event *event,
struct lttng_enabler *enabler);
+void lttng_filter_sync_state(struct lttng_bytecode_runtime *runtime);
#ifdef __cplusplus
}