Handle negative time and offset from Epoch

[babeltrace.git] / include / babeltrace / ctf / events.h

diff --git a/include/babeltrace/ctf/events.h b/include/babeltrace/ctf/events.h
index c92470cf83de30effd11a2da27928f804f501980..a8764707a7f188061f579588d072ccb431452761 100644 (file)
--- a/include/babeltrace/ctf/events.h
+++ b/include/babeltrace/ctf/events.h
@@ -109,10 +109,12 @@ const char *bt_ctf_event_name(const struct bt_ctf_event *event);
 uint64_t bt_ctf_get_cycles(const struct bt_ctf_event *event);
 
 /*
- * bt_ctf_get_timestamp: returns the timestamp of the event offsetted
- * with the system clock source (in ns) or -1ULL on error
+ * bt_ctf_get_timestamp: get the timestamp of the event offsetted
+ * with the system clock source (in ns) in *timestamp.
+ *
+ * Return 0 on success, or -1ULL on error.
  */
-uint64_t bt_ctf_get_timestamp(const struct bt_ctf_event *event);
+int bt_ctf_get_timestamp(const struct bt_ctf_event *event, int64_t *timestamp);
 
 /*
  * bt_ctf_get_field_list: obtain the list of fields for compound type
@@ -211,6 +213,12 @@ enum ctf_string_encoding bt_ctf_get_encoding(const struct bt_declaration *decl);
  */
 int bt_ctf_get_array_len(const struct bt_declaration *decl);
 
+/*
+ * bt_ctf_get_struct_field_count: return the number of fields in a structure.
+ * Returns a negative value on error.
+ */
+uint64_t bt_ctf_get_struct_field_count(const struct bt_definition *field);
+
 /*
  * Field access functions
  *
@@ -231,6 +239,10 @@ const struct bt_definition *bt_ctf_get_enum_int(const struct bt_definition *fiel
 const char *bt_ctf_get_enum_str(const struct bt_definition *field);
 char *bt_ctf_get_char_array(const struct bt_definition *field);
 char *bt_ctf_get_string(const struct bt_definition *field);
+double bt_ctf_get_float(const struct bt_definition *field);
+const struct bt_definition *bt_ctf_get_variant(const struct bt_definition *field);
+const struct bt_definition *bt_ctf_get_struct_field_index(
+               const struct bt_definition *field, uint64_t i);
 
 /*
  * bt_ctf_field_get_error: returns the last error code encountered while
@@ -260,6 +272,11 @@ int bt_ctf_get_event_decl_list(int handle_id, struct bt_context *ctx,
  */
 const char *bt_ctf_get_decl_event_name(const struct bt_ctf_event_decl *event);
 
+/*
+ * bt_ctf_get_decl_event_id: return the event-ID of the event or -1ULL on error
+ */
+uint64_t bt_ctf_get_decl_event_id(const struct bt_ctf_event_decl *event);
+
 /*
  * bt_ctf_get_decl_fields: get all field declarations in a scope of an event
  *