eventq: convert all usage of events to use the new API.

For now, there is still a single global event queue, but this is
necessary for making the steps towards a parallelized m5.

src/cpu/simple/atomic.cc

@@ -43,7 +43,7 @@ using namespace std;
 using namespace TheISA;
 
 AtomicSimpleCPU::TickEvent::TickEvent(AtomicSimpleCPU *c)
-    : Event(&mainEventQueue, CPU_Tick_Pri), cpu(c)
+    : Event(CPU_Tick_Pri), cpu(c)
 {
 }
 
@@ -201,9 +201,8 @@ AtomicSimpleCPU::resume()
 
     changeState(SimObject::Running);
     if (thread->status() == ThreadContext::Active) {
-        if (!tickEvent.scheduled()) {
-            tickEvent.schedule(nextCycle());
-        }
+        if (!tickEvent.scheduled())
+            schedule(tickEvent, nextCycle());
     }
 }
 
@@ -230,7 +229,7 @@ AtomicSimpleCPU::takeOverFrom(BaseCPU *oldCPU)
         ThreadContext *tc = threadContexts[i];
         if (tc->status() == ThreadContext::Active && _status != Running) {
             _status = Running;
-            tickEvent.schedule(nextCycle());
+            schedule(tickEvent, nextCycle());
             break;
         }
     }
@@ -260,7 +259,7 @@ AtomicSimpleCPU::activateContext(int thread_num, int delay)
     numCycles += tickToCycles(thread->lastActivate - thread->lastSuspend);
 
     //Make sure ticks are still on multiples of cycles
-    tickEvent.schedule(nextCycle(curTick + ticks(delay)));
+    schedule(tickEvent, nextCycle(curTick + ticks(delay)));
     _status = Running;
 }
 
@@ -278,7 +277,7 @@ AtomicSimpleCPU::suspendContext(int thread_num)
     // tick event may not be scheduled if this gets called from inside
     // an instruction's execution, e.g. "quiesce"
     if (tickEvent.scheduled())
-        tickEvent.deschedule();
+        deschedule(tickEvent);
 
     notIdleFraction--;
     _status = Idle;
@@ -794,7 +793,7 @@ AtomicSimpleCPU::tick()
         latency = ticks(1);
 
     if (_status != Idle)
-        tickEvent.schedule(curTick + latency);
+        schedule(tickEvent, curTick + latency);
 }
 
 

src/cpu/simple/timing.cc

@@ -101,7 +101,7 @@ void
 TimingSimpleCPU::CpuPort::TickEvent::schedule(PacketPtr _pkt, Tick t)
 {
     pkt = _pkt;
-    Event::schedule(t);
+    cpu->schedule(this, t);
 }
 
 TimingSimpleCPU::TimingSimpleCPU(TimingSimpleCPUParams *p)
@@ -165,7 +165,7 @@ TimingSimpleCPU::resume()
         // Delete the old event if it existed.
         if (fetchEvent) {
             if (fetchEvent->scheduled())
-                fetchEvent->deschedule();
+                deschedule(fetchEvent);
 
             delete fetchEvent;
         }
@@ -186,7 +186,7 @@ TimingSimpleCPU::switchOut()
     // If we've been scheduled to resume but are then told to switch out,
     // we'll need to cancel it.
     if (fetchEvent && fetchEvent->scheduled())
-        fetchEvent->deschedule();
+        deschedule(fetchEvent);
 }
 
 
@@ -228,7 +228,8 @@ TimingSimpleCPU::activateContext(int thread_num, int delay)
     _status = Running;
 
     // kick things off by initiating the fetch of the next instruction
-    fetchEvent = new FetchEvent(this, nextCycle(curTick + ticks(delay)));
+    fetchEvent = new FetchEvent(this);
+    schedule(fetchEvent, nextCycle(curTick + ticks(delay)));
 }
 
 
@@ -819,10 +820,11 @@ TimingSimpleCPU::DcachePort::recvRetry()
     }
 }
 
-TimingSimpleCPU::IprEvent::IprEvent(Packet *_pkt, TimingSimpleCPU *_cpu, Tick t)
-    : Event(&mainEventQueue), pkt(_pkt), cpu(_cpu)
+TimingSimpleCPU::IprEvent::IprEvent(Packet *_pkt, TimingSimpleCPU *_cpu,
+    Tick t)
+    : pkt(_pkt), cpu(_cpu)
 {
-    schedule(t);
+    cpu->schedule(this, t);
 }
 
 void

src/cpu/simple/timing.hh

@@ -80,8 +80,7 @@ class TimingSimpleCPU : public BaseSimpleCPU
             PacketPtr pkt;
             TimingSimpleCPU *cpu;
 
-            TickEvent(TimingSimpleCPU *_cpu)
-                :Event(&mainEventQueue), cpu(_cpu) {}
+            TickEvent(TimingSimpleCPU *_cpu) : cpu(_cpu) {}
             const char *description() const { return "Timing CPU tick"; }
             void schedule(PacketPtr _pkt, Tick t);
         };