+/* Update predicate counts and scores (asynchronous) when the read value is not available
+ *
+ * @param type
+ * type 1: find_threads return false
+ * type 2: find_threads return true, but the fuzzer decides that that thread shall not sleep based on sleep score
+ * type 3: threads are put to sleep but woken up before the waited value appears
+ * type 4: threads are put to sleep and the waited vaule appears (success)
+ */
+
+/*--
+void NewFuzzer::update_predicate_score(Predicate * predicate, sleep_result_t type)
+{
+ switch (type) {
+ case SLEEP_FAIL_TYPE1:
+ predicate->incr_fail_count();
+
+ // Do not choose this predicate when reselecting a new branch
+ failed_predicates.put(predicate, true);
+ break;
+ case SLEEP_FAIL_TYPE2:
+ predicate->incr_fail_count();
+ predicate->incr_sleep_score(1);
+ failed_predicates.put(predicate, true);
+ break;
+ case SLEEP_FAIL_TYPE3:
+ predicate->incr_fail_count();
+ predicate->decr_sleep_score(10);
+ break;
+ case SLEEP_SUCCESS:
+ predicate->incr_sleep_score(10);
+ break;
+ default:
+ model_print("unknown predicate result type.\n");
+ break;
+ }
+}
+*/
+
+bool NewFuzzer::check_predicate_expressions(PredExprSet * pred_expressions,
+ inst_act_map_t * inst_act_map, uint64_t write_val, bool * no_predicate)
+{
+ bool satisfy_predicate = true;
+
+ PredExprSetIter * pred_expr_it = pred_expressions->iterator();
+ while (pred_expr_it->hasNext()) {
+ struct pred_expr * expression = pred_expr_it->next();
+ bool equality;
+
+ switch (expression->token) {
+ case NOPREDICATE:
+ *no_predicate = true;
+ break;
+ case EQUALITY:
+ FuncInst * to_be_compared;
+ ModelAction * last_act;
+ uint64_t last_read;
+
+ to_be_compared = expression->func_inst;
+ last_act = inst_act_map->get(to_be_compared);
+ last_read = last_act->get_reads_from_value();
+
+ equality = (write_val == last_read);
+ if (equality != expression->value)
+ satisfy_predicate = false;
+ break;
+ case NULLITY:
+ equality = ((void*)write_val == NULL);
+ if (equality != expression->value)
+ satisfy_predicate = false;
+ break;
+ default:
+ model_print("unknown predicate token\n");
+ break;
+ }
+
+ if (!satisfy_predicate)
+ break;
+ }
+
+ return satisfy_predicate;
+}
+