event: minor cleanup

Initialize flags via the Event constructor instead of calling
setFlags() in the body of the derived class's constructor.  I
forget exactly why, but this made life easier when implementing
multi-queue support.

Also rename Event::getFlags() to isFlagSet() to better match
common usage, and get rid of some unused Event methods.

4 files changed, 14 insertions, 26 deletions

diff --git a/src/sim/debug.cc b/src/sim/debug.cc
index bd7924117..fadd89ae1 100644
--- a/src/sim/debug.cc
+++ b/src/sim/debug.cc
@@ -57,9 +57,8 @@ struct DebugBreakEvent : public Event
 // constructor: schedule at specified time
 //
 DebugBreakEvent::DebugBreakEvent()
-    : Event(Debug_Break_Pri)
+    : Event(Debug_Break_Pri, AutoDelete)
 {
-    setFlags(AutoDelete);
 }
 
 //
diff --git a/src/sim/eventq.hh b/src/sim/eventq.hh
index fcfa119c4..1509d05a5 100644
--- a/src/sim/eventq.hh
+++ b/src/sim/eventq.hh
@@ -149,20 +149,13 @@ class Event : public Serializable, public FastAlloc
         return flags & PublicRead;
     }
 
-    Flags
-    getFlags(Flags _flags) const
+    bool
+    isFlagSet(Flags _flags) const
     {
         assert(_flags.noneSet(~PublicRead));
         return flags.isSet(_flags);
     }
 
-    Flags
-    allFlags(Flags _flags) const
-    {
-        assert(_flags.noneSet(~PublicRead));
-        return flags.allSet(_flags);
-    }
-
     /// Accessor for flags.
     void
     setFlags(Flags _flags)
@@ -247,9 +240,11 @@ class Event : public Serializable, public FastAlloc
      * Event constructor
      * @param queue that the event gets scheduled on
      */
-    Event(Priority p = Default_Pri)
-        : nextBin(NULL), nextInBin(NULL), _priority(p), flags(Initialized)
+    Event(Priority p = Default_Pri, Flags f = 0)
+        : nextBin(NULL), nextInBin(NULL), _priority(p),
+          flags(Initialized | f)
     {
+        assert(f.noneSet(~PublicWrite));
 #ifndef NDEBUG
         instance = ++instanceCounter;
         queue = NULL;
@@ -406,16 +401,11 @@ class EventQueue : public Serializable
         }
     }
 
-    // default: process all events up to 'now' (curTick())
-    void serviceEvents() { serviceEvents(curTick()); }
-
     // return true if no events are queued
     bool empty() const { return head == NULL; }
 
     void dump() const;
 
-    Tick nextEventTime() { return empty() ? curTick() : head->when(); }
-
     bool debugVerify() const;
 
 #ifndef SWIG
@@ -559,8 +549,8 @@ DelayFunction(EventQueue *eventq, Tick when, T *object)
 
       public:
         DelayEvent(T *o)
-            : object(o)
-        { this->setFlags(AutoDelete); }
+            : Event(Default_Pri, AutoDelete), object(o)
+        { }
         void process() { (object->*F)(); }
         const char *description() const { return "delay"; }
     };
diff --git a/src/sim/sim_events.cc b/src/sim/sim_events.cc
index aac844429..725e7da9d 100644
--- a/src/sim/sim_events.cc
+++ b/src/sim/sim_events.cc
@@ -40,9 +40,8 @@
 using namespace std;
 
 SimLoopExitEvent::SimLoopExitEvent(const std::string &_cause, int c, Tick r)
-    : Event(Sim_Exit_Pri), cause(_cause), code(c), repeat(r)
+    : Event(Sim_Exit_Pri, IsExitEvent), cause(_cause), code(c), repeat(r)
 {
-    setFlags(IsExitEvent);
 }
 
 
@@ -55,7 +54,7 @@ SimLoopExitEvent::process()
     // if this got scheduled on a different queue (e.g. the committed
     // instruction queue) then make a corresponding event on the main
     // queue.
-    if (!getFlags(IsMainQueue)) {
+    if (!isFlagSet(IsMainQueue)) {
         exitSimLoop(cause, code);
         delete this;
     }
@@ -65,7 +64,7 @@ SimLoopExitEvent::process()
 
     // but if you are doing this on intervals, don't forget to make another
     if (repeat) {
-        assert(getFlags(IsMainQueue));
+        assert(isFlagSet(IsMainQueue));
         mainEventQueue.schedule(this, curTick() + repeat);
     }
 }
diff --git a/src/sim/stat_control.cc b/src/sim/stat_control.cc
index 80aec224e..7cf77174f 100644
--- a/src/sim/stat_control.cc
+++ b/src/sim/stat_control.cc
@@ -175,9 +175,9 @@ class StatEvent : public Event
 
   public:
     StatEvent(bool _dump, bool _reset, Tick _repeat)
-        : Event(Stat_Event_Pri), dump(_dump), reset(_reset), repeat(_repeat)
+        : Event(Stat_Event_Pri, AutoDelete),
+          dump(_dump), reset(_reset), repeat(_repeat)
     {
-        setFlags(AutoDelete);
     }
 
     virtual void