- if (diverge == NULL)
- return scheduler->select_next_thread(node_stack->get_head());
-
-
- /* Else, we are trying to replay an execution */
- ModelAction *next = node_stack->get_next()->get_action();
-
- if (next == diverge) {
- if (earliest_diverge == NULL || *diverge < *earliest_diverge)
- earliest_diverge = diverge;
-
- Node *nextnode = next->get_node();
- Node *prevnode = nextnode->get_parent();
- scheduler->update_sleep_set(prevnode);
-
- /* Reached divergence point */
- if (nextnode->increment_behaviors()) {
- /* Execute the same thread with a new behavior */
- tid = next->get_tid();
- node_stack->pop_restofstack(2);
- } else {
- ASSERT(prevnode);
- /* Make a different thread execute for next step */
- scheduler->add_sleep(get_thread(next->get_tid()));
- tid = prevnode->get_next_backtrack();
- /* Make sure the backtracked thread isn't sleeping. */
- node_stack->pop_restofstack(1);
- if (diverge == earliest_diverge) {
- earliest_diverge = prevnode->get_action();
- }
- }
- /* Start the round robin scheduler from this thread id */
- scheduler->set_scheduler_thread(tid);
- /* The correct sleep set is in the parent node. */
- execute_sleep_set();
-
- DEBUG("*** Divergence point ***\n");
-
- diverge = NULL;
- } else {
- tid = next->get_tid();
- }
- DEBUG("*** ModelChecker chose next thread = %d ***\n", id_to_int(tid));
- ASSERT(tid != THREAD_ID_T_NONE);
- return get_thread(id_to_int(tid));
-}
-
-/**
- * We need to know what the next actions of all threads in the sleep
- * set will be. This method computes them and stores the actions at
- * the corresponding thread object's pending action.
- */
-void ModelChecker::execute_sleep_set()
-{
- for (unsigned int i = 0; i < get_num_threads(); i++) {
- thread_id_t tid = int_to_id(i);
- Thread *thr = get_thread(tid);
- if (scheduler->is_sleep_set(thr) && thr->get_pending()) {
- thr->get_pending()->set_sleep_flag();
- }
- }