+ protected:
+ /**
+ * Represents that the indicated thread context has a "lock" on
+ * the block, in the LL/SC sense.
+ */
+ class Lock {
+ public:
+ int cpuNum; // locking CPU
+ int threadNum; // locking thread ID within CPU
+
+ // check for matching execution context
+ bool matchesContext(Request *req)
+ {
+ return (cpuNum == req->getCpuNum() &&
+ threadNum == req->getThreadNum());
+ }
+
+ Lock(Request *req)
+ : cpuNum(req->getCpuNum()), threadNum(req->getThreadNum())
+ {
+ }
+ };
+
+ /** List of thread contexts that have performed a load-locked (LL)
+ * on the block since the last store. */
+ std::list<Lock> lockList;
+
+ public:
+