sim: have a curTick per eventq

This patch adds a _curTick variable to an eventq. This variable is updated
whenever an event is serviced in function serviceOne(), or all events upto
a particular time are processed in function serviceEvents(). This change
helps when there are eventqs that do not make use of curTick for scheduling
events.

src/mem/comm_monitor.cc

@@ -38,6 +38,7 @@
  *          Andreas Hansson
  */
 
+#include "base/trace.hh"
 #include "debug/CommMonitor.hh"
 #include "mem/comm_monitor.hh"
 #include "sim/stats.hh"

src/mem/packet_queue.cc

@@ -41,6 +41,7 @@
  *          Andreas Hansson
  */
 
+#include "base/trace.hh"
 #include "debug/Drain.hh"
 #include "debug/PacketQueue.hh"
 #include "mem/packet_queue.hh"

src/mem/packet_queue.hh

@@ -56,8 +56,8 @@
 #include <list>
 
 #include "mem/port.hh"
-#include "sim/eventq.hh"
 #include "sim/drain.hh"
+#include "sim/eventq_impl.hh"
 
 /**
  * A packet queue is a class that holds deferred packets and later

src/mem/physical.cc

@@ -50,6 +50,7 @@
 #include <iostream>
 #include <string>
 
+#include "base/trace.hh"
 #include "debug/BusAddrRanges.hh"
 #include "debug/Checkpoint.hh"
 #include "mem/abstract_mem.hh"

src/mem/ruby/network/Topology.cc

@@ -28,6 +28,7 @@
 
 #include <cassert>
 
+#include "base/trace.hh"
 #include "debug/RubyNetwork.hh"
 #include "mem/protocol/MachineType.hh"
 #include "mem/ruby/common/NetDest.hh"

src/mem/ruby/system/System.cc

@@ -226,7 +226,7 @@ RubySystem::serialize(std::ostream &os)
     // Restore eventq head
     eventq_head = eventq->replaceHead(eventq_head);
     // Restore curTick
-    curTick(curtick_original);
+    setCurTick(curtick_original);
 
     uint8_t *raw_data = NULL;
 
@@ -357,7 +357,7 @@ RubySystem::startup()
         // save the event queue head
         Event* eventq_head = eventq->replaceHead(NULL);
         // set curTick to 0 and reset Ruby System's clock
-        curTick(0);
+        setCurTick(0);
         resetClock();
 
         // Schedule an event to start cache warmup
@@ -377,7 +377,7 @@ RubySystem::startup()
         // Restore eventq head
         eventq_head = eventq->replaceHead(eventq_head);
         // Restore curTick and Ruby System's clock
-        curTick(curtick_original);
+        setCurTick(curtick_original);
         resetClock();
     }
 }

src/mem/simple_dram.cc

@@ -38,6 +38,7 @@
  *          Ani Udipi
  */
 
+#include "base/trace.hh"
 #include "debug/Drain.hh"
 #include "debug/DRAM.hh"
 #include "debug/DRAMWR.hh"