scope: add reference to parent resource_span

Signed-off-by: Eduardo Silva <[email protected]>

Author: edsiper

include/ctraces/ctr_scope.h

@@ -34,7 +34,12 @@ struct ctrace_scope_span {
     struct ctrace_instrumentation_scope *instrumentation_scope;
     struct cfl_list spans;
     cfl_sds_t schema_url;
-    struct cfl_list _head;           /* link to ctrace_resource_span->scope_spans list */
+
+     /* parent resource span */
+    struct ctrace_resource_span *resource_span;
+
+    /* link to ctrace_resource_span->scope_spans list */
+    struct cfl_list _head;
 };
 
 /* scope span */

src/ctr_scope.c

@@ -30,6 +30,7 @@ struct ctrace_scope_span *ctr_scope_span_create(struct ctrace_resource_span *res
     }
     cfl_list_init(&scope_span->spans);
     cfl_list_add(&scope_span->_head, &resource_span->scope_spans);
+    scope_span->resource_span = resource_span;
 
     return scope_span;
 }