X-Git-Url: http://plrg.eecs.uci.edu/git/?p=model-checker.git;a=blobdiff_plain;f=promise.cc;h=a98403bbcf10569a91c2929bd17c420f4a3dc5f6;hp=3a38384721cd3dfdc59b25f59440b432cf62c87b;hb=6014243b7130f34b7ffd1098da225b0b8de5c328;hpb=e79a7cd8e9c85d37a5d5c2a81ca14b1017b1b305

diff --git a/promise.cc b/promise.cc
index 3a38384..a98403b 100644
--- a/promise.cc
+++ b/promise.cc
@@ -16,6 +16,7 @@
 Promise::Promise(const ModelExecution *execution, ModelAction *read, struct future_value fv) :
 	execution(execution),
 	num_available_threads(0),
+	num_was_available_threads(0),
 	fv(fv),
 	readers(1, read),
 	write(NULL)
@@ -82,6 +83,12 @@ void Promise::add_thread(thread_id_t tid)
 		available_thread[id] = true;
 		num_available_threads++;
 	}
+	if (id >= was_available_thread.size())
+		was_available_thread.resize(id + 1, false);
+	if (!was_available_thread[id]) {
+		was_available_thread[id] = true;
+		num_was_available_threads++;
+	}
 }
 
 /**
@@ -100,6 +107,14 @@ bool Promise::thread_is_available(thread_id_t tid) const
 	return available_thread[id];
 }
 
+bool Promise::thread_was_available(thread_id_t tid) const
+{
+	unsigned int id = id_to_int(tid);
+	if (id >= was_available_thread.size())
+		return false;
+	return was_available_thread[id];
+}
+
 /**
  * @brief Get an upper bound on the number of available threads
  *