+ for (unsigned int i = 0; i < may_read_from.size(); i++)
+ may_read_from[i]->print();
+}
+
+/**
+ * Sets a promise to explore meeting with the given node.
+ * @param i is the promise index.
+ */
+void Node::set_promise(unsigned int i, bool is_rmw) {
+ if (i >= promises.size())
+ promises.resize(i + 1, PROMISE_IGNORE);
+ if (promises[i] == PROMISE_IGNORE) {
+ promises[i] = PROMISE_UNFULFILLED;
+ if (is_rmw)
+ promises[i] |= PROMISE_RMW;
+ }
+}
+
+/**
+ * Looks up whether a given promise should be satisfied by this node.
+ * @param i The promise index.
+ * @return true if the promise should be satisfied by the given model action.
+ */
+bool Node::get_promise(unsigned int i) {
+ return (i < promises.size()) && ((promises[i] & PROMISE_MASK) == PROMISE_FULFILLED);
+}
+
+/**
+ * Increments to the next combination of promises.
+ * @return true if we have a valid combination.
+ */
+bool Node::increment_promise() {
+ DBG();
+ unsigned int rmw_count=0;
+ for (unsigned int i = 0; i < promises.size(); i++) {
+ if (promises[i]==(PROMISE_RMW|PROMISE_FULFILLED))
+ rmw_count++;
+ }
+
+ for (unsigned int i = 0; i < promises.size(); i++) {
+ if ((promises[i] & PROMISE_MASK) == PROMISE_UNFULFILLED) {
+ if ((rmw_count > 0) && (promises[i] & PROMISE_RMW)) {
+ //sending our value to two rmws... not going to work..try next combination
+ continue;
+ }
+ promises[i] = (promises[i] & PROMISE_RMW) |PROMISE_FULFILLED;
+ while (i > 0) {
+ i--;
+ if ((promises[i] & PROMISE_MASK) == PROMISE_FULFILLED)
+ promises[i] = (promises[i] & PROMISE_RMW) | PROMISE_UNFULFILLED;
+ }
+ return true;
+ } else if (promises[i] == (PROMISE_RMW|PROMISE_FULFILLED)) {
+ rmw_count--;
+ }
+ }
+ return false;
+}
+
+/**
+ * Returns whether the promise set is empty.
+ * @return true if we have explored all promise combinations.
+ */
+bool Node::promise_empty() {
+ unsigned int rmw_count=0;
+ for (unsigned int i = 0; i < promises.size(); i++) {
+ if (promises[i]==(PROMISE_RMW|PROMISE_FULFILLED))
+ rmw_count++;
+ }
+
+ for (unsigned int i = 0; i < promises.size();i++) {
+ if ((promises[i]& PROMISE_MASK) == PROMISE_UNFULFILLED) {
+ //if this isn't a feasible option, keep going
+ if ((rmw_count > 0)&&(promises[i] & PROMISE_RMW))
+ continue;
+ return false;
+ } else if (promises[i] == (PROMISE_RMW|PROMISE_FULFILLED)) {
+ rmw_count--;
+ }
+ }
+ return true;
+}
+
+
+void Node::set_misc_max(int i) {
+ misc_max=i;
+}
+
+int Node::get_misc() {
+ return misc_index;
+}
+
+bool Node::increment_misc() {
+ return (misc_index<misc_max)&&((++misc_index)<misc_max);
+}
+
+bool Node::misc_empty() {
+ return (misc_index+1)>=misc_max;