ruby: get rid of RefCnt and Allocator stuff use base/refcnt.hh

This was somewhat tricky because the RefCnt API was somewhat odd.  The
biggest confusion was that the the RefCnt object's constructor that
took a TYPE& cloned the object.  I created an explicit virtual clone()
function for things that took advantage of this version of the
constructor.  I was conservative and used clone() when I was in doubt
of whether or not it was necessary.  I still think that there are
probably too many instances of clone(), but hopefully not too many.

I converted several instances of const MsgPtr & to a simple MsgPtr.
If the function wants to avoid the overhead of creating another
reference, then it should just use a regular pointer instead of a ref
counting ptr.

There were a couple of instances where refcounted objects were created
on the stack.  This seems pretty dangerous since if you ever
accidentally make a reference to that object with a ref counting
pointer, bad things are bound to happen.

1 files changed, 13 insertions, 11 deletions

diff --git a/src/mem/ruby/slicc_interface/Message.hh b/src/mem/ruby/slicc_interface/Message.hh
index d9df6f131..ff94fdd40 100644
--- a/src/mem/ruby/slicc_interface/Message.hh
+++ b/src/mem/ruby/slicc_interface/Message.hh
@@ -31,29 +31,31 @@
 
 #include <iostream>
 
-#include "mem/gems_common/RefCnt.hh"
-#include "mem/gems_common/RefCountable.hh"
+#include "base/refcnt.hh"
 #include "mem/ruby/common/Global.hh"
 #include "mem/ruby/eventqueue/RubyEventQueue.hh"
 
 class Message;
-typedef RefCnt<Message> MsgPtr;
+typedef RefCountingPtr<Message> MsgPtr;
 
-class Message : public RefCountable
+class Message : public RefCounted
 {
   public:
     Message()
-        : RefCountable()
-    {
-        m_time = g_eventQueue_ptr->getTime();
-        m_LastEnqueueTime = g_eventQueue_ptr->getTime();
-        m_DelayedCycles = 0;
-    }
+        : m_time(g_eventQueue_ptr->getTime()),
+          m_LastEnqueueTime(g_eventQueue_ptr->getTime()),
+          m_DelayedCycles(0)
+    { }
+
+    Message(const Message &other)
+        : m_time(other.m_time),
+          m_LastEnqueueTime(other.m_LastEnqueueTime),
+          m_DelayedCycles(other.m_DelayedCycles)
+    { }
 
     virtual ~Message() { }
 
     virtual Message* clone() const = 0;
-    virtual void destroy() = 0;
     virtual void print(std::ostream& out) const = 0;
 
     void setDelayedCycles(const int& cycles) { m_DelayedCycles = cycles; }