sim: Make SimObject inherit from Named

Standardize name creation of sim objects.

Change-Id: I5e0cb828da0810b47217e96e302857e32083c50b
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43246
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>

src/cpu/o3/probe/elastic_trace.cc

@@ -917,12 +917,6 @@ ElasticTrace::TraceInfo::typeToStr() const
     return Record::RecordType_Name(type);
 }
 
-const std::string
-ElasticTrace::name() const
-{
-    return ProbeListenerObject::name();
-}
-
 void
 ElasticTrace::flushTraces()
 {

src/cpu/o3/probe/elastic_trace.hh

@@ -109,9 +109,6 @@ class ElasticTrace : public ProbeListenerObject
     /** Register all listeners. */
     void regEtraceListeners();
 
-    /** Returns the name of the trace probe listener. */
-    const std::string name() const;
-
     /**
      * Process any outstanding trace records, flush them out to the protobuf
      * output streams and delete the streams at simulation exit.

src/cpu/o3/probe/simple_trace.hh

@@ -63,8 +63,7 @@ class SimpleTrace : public ProbeListenerObject
     /** Register the probe listeners. */
     void regProbeListeners() override;
 
-    /** Returns the name of the trace. */
-    const std::string
+    std::string
     name() const override
     {
         return ProbeListenerObject::name() + ".trace";

src/sim/sim_object.cc

@@ -54,7 +54,7 @@ SimObjectResolver *SimObject::_objNameResolver = NULL;
 //
 SimObject::SimObject(const Params &p)
     : EventManager(getEventQueue(p.eventq_index)),
-      statistics::Group(nullptr),
+      statistics::Group(nullptr), Named(p.name),
       _params(p)
 {
 #ifdef DEBUG

src/sim/sim_object.hh

@@ -49,6 +49,7 @@
 #include <string>
 #include <vector>
 
+#include "base/named.hh"
 #include "base/stats/group.hh"
 #include "params/SimObject.hh"
 #include "sim/drain.hh"
@@ -140,7 +141,7 @@ class SimObjectResolver;
  * \endcode
  */
 class SimObject : public EventManager, public Serializable, public Drainable,
-                  public statistics::Group
+                  public statistics::Group, public Named
 {
   private:
     typedef std::vector<SimObject *> SimObjectList;
@@ -179,12 +180,6 @@ class SimObject : public EventManager, public Serializable, public Drainable,
     virtual ~SimObject();
 
   public:
-
-    /**
-     * @ingroup api_simobject
-     */
-    virtual const std::string name() const { return params().name; }
-
     /**
      * init() is called after all C++ SimObjects have been created and
      * all ports are connected.  Initializations that are independent