+
+ delete node_iter;
+ }
+
+ delete tid_iter;
+}
+
+void ModelHistory::monitor_waiting_thread_counter(thread_id_t tid)
+{
+ WaitObj * wait_obj = getWaitObj(tid);
+ thrd_id_set_t * waited_by = wait_obj->getWaitedBy();
+
+ // Thread tid has taken an action, update the counter for threads waiting for tid
+ thrd_id_set_iter * tid_iter = waited_by->iterator();
+ while (tid_iter->hasNext()) {
+ thread_id_t waited_by_id = tid_iter->next();
+ WaitObj * other_wait_obj = getWaitObj(waited_by_id);
+
+ bool expire = other_wait_obj->incr_counter(tid);
+ if (expire) {
+// model_print("thread %d stops waiting for thread %d\n", waited_by_id, tid);
+ wait_obj->remove_waited_by(waited_by_id);
+ other_wait_obj->remove_waiting_for(tid);
+
+ thrd_id_set_t * other_waiting_for = other_wait_obj->getWaitingFor();
+ if ( other_waiting_for->isEmpty() ) {
+ // model_print("\tthread %d waits for nobody, wake up\n", self_id);
+ ModelExecution * execution = model->get_execution();
+ Thread * thread = execution->get_thread(waited_by_id);
+ ((NewFuzzer *)execution->getFuzzer())->notify_paused_thread(thread);
+ }
+ }
+ }
+
+ delete tid_iter;
+}
+
+/* Reallocate some snapshotted memories when new executions start */
+void ModelHistory::set_new_exec_flag()
+{
+ for (uint i = 1;i < func_nodes.size();i++) {
+ FuncNode * func_node = func_nodes[i];
+ func_node->set_new_exec_flag();
+ }
+}
+
+void ModelHistory::dump_func_node_graph()
+{
+ model_print("digraph func_node_graph {\n");
+ for (uint i = 1;i < func_nodes.size();i++) {
+ FuncNode * node = func_nodes[i];
+ ModelList<FuncNode *> * out_edges = node->get_out_edges();
+
+ model_print("\"%p\" [label=\"%s\"]\n", node, node->get_func_name());
+ mllnode<FuncNode *> * it;
+ for (it = out_edges->begin();it != NULL;it = it->getNext()) {
+ FuncNode * other = it->getVal();
+ model_print("\"%p\" -> \"%p\"\n", node, other);
+ }
+ }
+ model_print("}\n");
+}
+
+void ModelHistory::print_func_node()
+{
+ /* function id starts with 1 */
+ for (uint32_t i = 1;i < func_nodes.size();i++) {
+ FuncNode * func_node = func_nodes[i];
+ func_node->print_predicate_tree();
+
+/*
+ func_inst_list_mt * entry_insts = func_node->get_entry_insts();
+ model_print("function %s has entry actions\n", func_node->get_func_name());
+
+ mllnode<FuncInst*>* it;
+ for (it = entry_insts->begin();it != NULL;it=it->getNext()) {
+ FuncInst *inst = it->getVal();
+ model_print("type: %d, at: %s\n", inst->get_type(), inst->get_position());
+ }
+ */
+ }
+}
+
+void ModelHistory::print_waiting_threads()
+{
+ ModelExecution * execution = model->get_execution();
+ for (unsigned int i = 0;i < execution->get_num_threads();i++) {
+ thread_id_t tid = int_to_id(i);
+ WaitObj * wait_obj = getWaitObj(tid);
+ wait_obj->print_waiting_for();
+ }
+
+ for (unsigned int i = 0;i < execution->get_num_threads();i++) {
+ thread_id_t tid = int_to_id(i);
+ WaitObj * wait_obj = getWaitObj(tid);
+ wait_obj->print_waited_by();