+ * Add a thread which may resolve this promise
+ *
+ * @param tid The thread ID
+ */
+void Promise::add_thread(thread_id_t tid)
+{
+ unsigned int id = id_to_int(tid);
+ if (id >= available_thread.size())
+ available_thread.resize(id + 1, false);
+ if (!available_thread[id]) {
+ available_thread[id] = true;
+ num_available_threads++;
+ }
+}
+
+/**
+ * Check if a thread is available for resolving this promise. That is, the
+ * thread must have been previously marked for resolving this promise, and it
+ * cannot have been eliminated due to synchronization, etc.
+ *