Implement getNextRequest

# Explain what has been changed

# Explain why this change is being made

# Provide links to any relevant tickets, articles or other resources

DRAMSys/simulator/src/controller/scheduler/SMS.cpp

@@ -2,12 +2,28 @@
 
 using namespace std;
 
-void SMS::schedule (gp *payload)
+void SMS::schedule(gp *payload)
 {
-    buffer[DramExtension::getExtension(payload).getThread()].emplace_back(payload);
+  buffer[DramExtension::getExtension(payload).getThread()].emplace_back(payload);
 }
 
 std::pair<Command, gp*> SMS::getNextRequest(Bank bank)
 {
-  return pair<Command, tlm::tlm_generic_payload*>(Command::NOP, NULL);
+  if (bankbuffer[bank].empty())
+  {
+    return pair<Command, tlm::tlm_generic_payload*>(Command::NOP, NULL);
+  }
+  else
+  {
+    gp* payload = bankbuffer[bank].front();
+    Command command = IScheduler::getNextCommand(*payload);
+    if (command == Command::Read || command == Command::ReadA || command == Command::Write
+        || command == Command::WriteA)
+    {
+      bankbuffer[bank].pop_front();
+    }
+
+    return pair<Command, tlm::tlm_generic_payload*>(command, payload);
+  }
+
 }

DRAMSys/simulator/src/controller/scheduler/SMS.h

@@ -18,6 +18,8 @@ public:
 
 private:
     std::map<Thread, std::deque<gp*>> buffer;
+    std::map<Bank, std::deque<gp*>> bankbuffer;
+
     unsigned int SJFprobability;
 };