ruby: changes how Topologies are created

Instead of just passing a list of controllers to the makeTopology function
in src/mem/ruby/network/topologies/<Topo>.py we pass in a function pointer
which knows how to make the topology, possibly with some extra state set
in the configs/ruby/<protocol>.py file. Thus, we can move all of the files
from network/topologies to configs/topologies. A new class BaseTopology
is added which all topologies in configs/topologies must inheirit from and
follow its API.

--HG--
rename : src/mem/ruby/network/topologies/Crossbar.py => configs/topologies/Crossbar.py
rename : src/mem/ruby/network/topologies/Mesh.py => configs/topologies/Mesh.py
rename : src/mem/ruby/network/topologies/MeshDirCorners.py => configs/topologies/MeshDirCorners.py
rename : src/mem/ruby/network/topologies/Pt2Pt.py => configs/topologies/Pt2Pt.py
rename : src/mem/ruby/network/topologies/Torus.py => configs/topologies/Torus.py

1 files changed, 9 insertions, 4 deletions

diff --git a/src/python/m5/SimObject.py b/src/python/m5/SimObject.py
index fe0f1f606..0f742a3a2 100644
--- a/src/python/m5/SimObject.py
+++ b/src/python/m5/SimObject.py
@@ -168,10 +168,15 @@ class MetaSimObject(type):
         cls._port_refs = multidict() # port ref objects
         cls._instantiated = False # really instantiated, cloned, or subclassed
 
-        # We don't support multiple inheritance.  If you want to, you
-        # must fix multidict to deal with it properly.
-        if len(bases) > 1:
-            raise TypeError, "SimObjects do not support multiple inheritance"
+        # We don't support multiple inheritance of sim objects.  If you want
+        # to, you must fix multidict to deal with it properly. Non sim-objects
+        # are ok, though
+        bTotal = 0
+        for c in bases:
+            if isinstance(c, MetaSimObject):
+                bTotal += 1
+            if bTotal > 1:
+                raise TypeError, "SimObjects do not support multiple inheritance"
 
         base = bases[0]