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, 1 insertions, 1 deletions

diff --git a/src/mem/ruby/network/simple/Throttle.cc b/src/mem/ruby/network/simple/Throttle.cc
index 2d15b1141..5d74afb24 100644
--- a/src/mem/ruby/network/simple/Throttle.cc
+++ b/src/mem/ruby/network/simple/Throttle.cc
@@ -157,7 +157,7 @@ Throttle::wakeup()
                 // Find the size of the message we are moving
                 MsgPtr msg_ptr = m_in[vnet]->peekMsgPtr();
                 NetworkMessage* net_msg_ptr =
-                    safe_cast<NetworkMessage*>(msg_ptr.ref());
+                    safe_cast<NetworkMessage*>(msg_ptr.get());
                 m_units_remaining[vnet] +=
                     network_message_to_size(net_msg_ptr);