Add validation layer support for nullptr events (#929)

This commit adds checks in the validation layer for the case where
the event wait list parameter in urEnqueue entrypoints contains a
nullptr event.

scripts/templates/helper.py

@@ -1328,3 +1328,14 @@ def get_create_retain_release_functions(specs, namespace, tags):
  )
 
  return {"create": create_funcs, "retain": retain_funcs, "release": release_funcs}
+
+
+def get_event_wait_list_functions(specs, namespace, tags):
+ funcs = []
+ for s in specs:
+ for obj in s['objects']:
+ if re.match(r"function", obj['type']):
+ if any(x['name'] == 'phEventWaitList' for x in obj['params']) and any(
+ x['name'] == 'numEventsInWaitList' for x in obj['params']):
+ funcs.append(make_func_name(namespace, tags, obj))
+ return funcs

scripts/templates/valddi.cpp.mako

@@ -60,6 +60,16 @@ namespace ur_validation_layer
 
  %endfor
  %endfor
+ %if func_name in th.get_event_wait_list_functions(specs, n, tags):
+ if (phEventWaitList != NULL && numEventsInWaitList > 0) {
+ for (uint32_t i = 0; i < numEventsInWaitList; ++i) {
+ if (phEventWaitList[i] == NULL) {
+ return UR_RESULT_ERROR_INVALID_EVENT_WAIT_LIST;
+ }
+ }
+ }
+ %endif
+
  }
 
  ${x}_result_t result = ${th.make_pfn_name(n, tags, obj)}( ${", ".join(th.make_param_lines(n, tags, obj, format=["name"]))} );