Generalize `lttng_enabler_link_bytecode()` bytecode list

[lttng-ust.git] / liblttng-ust / ust-events-internal.h

diff --git a/liblttng-ust/ust-events-internal.h b/liblttng-ust/ust-events-internal.h
index 074a7b69bf44fcabfe544a191b3031fefbfe0f45..0fc0b795de3e08179e98ada090ad963e0e1d6313 100644 (file)
--- a/liblttng-ust/ust-events-internal.h
+++ b/liblttng-ust/ust-events-internal.h
@@ -51,14 +51,20 @@ struct lttng_event_notifier_enabler {
        uint64_t user_token;            /* User-provided token */
 };
 
-struct lttng_ust_filter_bytecode_node {
+enum lttng_ust_bytecode_node_type {
+       LTTNG_UST_BYTECODE_NODE_TYPE_FILTER,
+};
+
+struct lttng_ust_bytecode_node {
+       enum lttng_ust_bytecode_node_type type;
        struct cds_list_head node;
        struct lttng_enabler *enabler;
-       /*
-        * struct lttng_ust_filter_bytecode has var. sized array, must
-        * be last field.
-        */
-       struct lttng_ust_filter_bytecode bc;
+       struct  {
+               uint32_t len;
+               uint32_t reloc_offset;
+               uint64_t seqnum;
+               char data[];
+       } bc;
 };
 
 struct lttng_ust_excluder_node {
@@ -122,8 +128,9 @@ int lttng_event_enabler_disable(struct lttng_event_enabler *enabler);
  * events related to this enabler.
  */
 LTTNG_HIDDEN
-int lttng_event_enabler_attach_bytecode(struct lttng_event_enabler *enabler,
-               struct lttng_ust_filter_bytecode_node *bytecode);
+int lttng_event_enabler_attach_filter_bytecode(
+               struct lttng_event_enabler *enabler,
+               struct lttng_ust_bytecode_node *bytecode);
 
 /*
  * Attach an application context to an event enabler.
@@ -143,16 +150,16 @@ int lttng_event_enabler_attach_exclusion(struct lttng_event_enabler *enabler,
                struct lttng_ust_excluder_node *excluder);
 
 /*
- * Synchronize bytecodes for the enabler and the event.
+ * Synchronize bytecodes for the enabler and the instance (event or trigger).
  *
- * This function goes over all bytecode programs of the event enabler to ensure
- * each is linked to the provided event.
+ * This function goes over all bytecode programs of the enabler (event or
+ * trigger enabler) to ensure each is linked to the provided instance.
  */
 LTTNG_HIDDEN
 void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc,
                struct lttng_ctx **ctx,
-               struct cds_list_head *bytecode_runtime_head,
-               struct lttng_enabler *enabler);
+               struct cds_list_head *instance_bytecode_runtime_head,
+               struct cds_list_head *enabler_bytecode_runtime_head);
 
 /*
  * Allocate and initialize a `struct lttng_event_notifier_group` object.
@@ -210,9 +217,9 @@ int lttng_event_notifier_enabler_disable(
  * all event notifiers related to this enabler.
  */
 LTTNG_HIDDEN
-int lttng_event_notifier_enabler_attach_bytecode(
+int lttng_event_notifier_enabler_attach_filter_bytecode(
                struct lttng_event_notifier_enabler *event_notifier_enabler,
-               struct lttng_ust_filter_bytecode_node *bytecode);
+               struct lttng_ust_bytecode_node *bytecode);
 
 /*
  * Attach exclusion list to `struct lttng_event_notifier_enabler` and all