Implement capturing payload on event notifiers

[lttng-ust.git] / include / lttng / ust-events.h

diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h
index 7fa992efd77d86a93464e73336c596703f773a4f..44b8d4c4878819d57b2a13b7130e9c28862540d7 100644 (file)
--- a/include/lttng/ust-events.h
+++ b/include/lttng/ust-events.h
@@ -315,6 +315,7 @@ struct lttng_ctx_value {
        enum lttng_ust_dynamic_type sel;
        union {
                int64_t s64;
+               uint64_t u64;
                const char *str;
                double d;
        } u;
@@ -426,14 +427,16 @@ struct ust_pending_probe;
 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_interpreter_output;
+
 /*
  * This structure is used in the probes. More specifically, the `filter` and
  * `node` fields are explicity used in the probes. When modifying this
@@ -442,8 +445,14 @@ enum lttng_filter_ret {
  */
 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);
+               uint64_t (*capture)(void *interpreter_data,
+                               const char *interpreter_stack_data,
+                               struct lttng_interpreter_output *interpreter_output);
+       } interpreter_funcs;
        int link_failed;
        struct cds_list_head node;      /* list of bytecode runtime in event */
        /*
@@ -503,7 +512,9 @@ struct lttng_event_notifier {
        uint64_t user_token;
        int enabled;
        int registered;                 /* has reg'd tracepoint probe */
+       size_t num_captures;            /* Needed to allocate the msgpack array. */
        struct cds_list_head filter_bytecode_runtime_head;
+       struct cds_list_head capture_bytecode_runtime_head;
        int has_enablers_without_bytecode;
        struct cds_list_head enablers_ref_head;
        const struct lttng_event_desc *desc;
@@ -691,7 +702,8 @@ 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_event_notifier *event_notifier,
+               const char *stack_data);
 
 struct lttng_channel *lttng_channel_create(struct lttng_session *session,
                                       const char *transport_name,
@@ -709,8 +721,6 @@ int lttng_channel_disable(struct lttng_channel *channel);
 int lttng_attach_context(struct lttng_ust_context *context_param,
                union ust_args *uargs,
                struct lttng_ctx **ctx, struct lttng_session *session);
-int lttng_session_context_init(struct lttng_ctx **ctx);
-
 void lttng_transport_register(struct lttng_transport *transport);
 void lttng_transport_unregister(struct lttng_transport *transport);
 
@@ -811,7 +821,6 @@ struct lttng_ust_field_iter *
        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);
@@ -847,6 +856,9 @@ int lttng_enabler_attach_exclusion(struct lttng_enabler *enabler,
                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);
+int lttng_session_context_init(struct lttng_ctx **ctx);
+
 
 #ifdef __cplusplus
 }