diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mem/ruby/network/topologies/Crossbar.py | 51 | ||||
| -rw-r--r-- | src/mem/ruby/network/topologies/Mesh.py | 114 | ||||
| -rw-r--r-- | src/mem/ruby/network/topologies/MeshDirCorners.py | 132 | ||||
| -rw-r--r-- | src/mem/ruby/network/topologies/Pt2Pt.py | 57 | ||||
| -rw-r--r-- | src/mem/ruby/network/topologies/SConscript | 6 | ||||
| -rw-r--r-- | src/mem/ruby/network/topologies/TopologyCreator.py | 19 | ||||
| -rw-r--r-- | src/mem/ruby/network/topologies/Torus.py | 126 | ||||
| -rw-r--r-- | src/python/m5/SimObject.py | 13 |
8 files changed, 29 insertions, 489 deletions
diff --git a/src/mem/ruby/network/topologies/Crossbar.py b/src/mem/ruby/network/topologies/Crossbar.py deleted file mode 100644 index 04e01ee1c..000000000 --- a/src/mem/ruby/network/topologies/Crossbar.py +++ /dev/null @@ -1,51 +0,0 @@ -# Copyright (c) 2010 Advanced Micro Devices, Inc. -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer; -# redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in the -# documentation and/or other materials provided with the distribution; -# neither the name of the copyright holders nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -# -# Authors: Steve Reinhardt - -from m5.params import * -from m5.objects import * - -class Crossbar(Topology): - description='Crossbar' - -def makeTopology(nodes, options, IntLink, ExtLink, Router): - # Create an individual router for each controller plus one more for the - # centralized crossbar. The large numbers of routers are needed because - # external links do not model outgoing bandwidth in the simple network, but - # internal links do. - cb = Crossbar() - cb.routers = [Router(router_id=i) for i in range(len(nodes)+1)] - cb.ext_links = [ExtLink(link_id=i, ext_node=n, int_node=cb.routers[i]) - for (i, n) in enumerate(nodes)] - link_count = len(nodes) - xbar = cb.routers[len(nodes)] # the crossbar router is the last router created - cb.int_links = [IntLink(link_id=(link_count+i), - node_a=cb.routers[i], node_b=xbar) - for i in range(len(nodes))] - return cb - - diff --git a/src/mem/ruby/network/topologies/Mesh.py b/src/mem/ruby/network/topologies/Mesh.py deleted file mode 100644 index fa6e63354..000000000 --- a/src/mem/ruby/network/topologies/Mesh.py +++ /dev/null @@ -1,114 +0,0 @@ -# Copyright (c) 2010 Advanced Micro Devices, Inc. -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer; -# redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in the -# documentation and/or other materials provided with the distribution; -# neither the name of the copyright holders nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -# -# Authors: Brad Beckmann - -from m5.params import * -from m5.objects import * - -class Mesh(Topology): - description='Mesh' - -# Makes a generic mesh assuming an equal number of cache and directory cntrls - -def makeTopology(nodes, options, IntLink, ExtLink, Router): - - num_routers = options.num_cpus - num_rows = options.mesh_rows - - # There must be an evenly divisible number of cntrls to routers - # Also, obviously the number or rows must be <= the number of routers - cntrls_per_router, remainder = divmod(len(nodes), num_routers) - assert(num_rows <= num_routers) - num_columns = int(num_routers / num_rows) - assert(num_columns * num_rows == num_routers) - - # Create the mesh object - mesh = Mesh() - - # Create the routers in the mesh - mesh.routers = [Router(router_id=i) for i in range(num_routers)] - - # link counter to set unique link ids - link_count = 0 - - # Add all but the remainder nodes to the list of nodes to be uniformly - # distributed across the network. - network_nodes = [] - remainder_nodes = [] - for node_index in xrange(len(nodes)): - if node_index < (len(nodes) - remainder): - network_nodes.append(nodes[node_index]) - else: - remainder_nodes.append(nodes[node_index]) - - # Connect each node to the appropriate router - ext_links = [] - for (i, n) in enumerate(network_nodes): - cntrl_level, router_id = divmod(i, num_routers) - assert(cntrl_level < cntrls_per_router) - ext_links.append(ExtLink(link_id=link_count, ext_node=n, - int_node=mesh.routers[router_id])) - link_count += 1 - - # Connect the remainding nodes to router 0. These should only be - # DMA nodes. - for (i, node) in enumerate(remainder_nodes): - assert(node.type == 'DMA_Controller') - assert(i < remainder) - ext_links.append(ExtLink(link_id=link_count, ext_node=node, - int_node=mesh.routers[0])) - link_count += 1 - - # Create the mesh links. First row (east-west) links then column - # (north-south) links - int_links = [] - for row in xrange(num_rows): - for col in xrange(num_columns): - if (col + 1 < num_columns): - east_id = col + (row * num_columns) - west_id = (col + 1) + (row * num_columns) - int_links.append(IntLink(link_id=link_count, - node_a=mesh.routers[east_id], - node_b=mesh.routers[west_id], - weight=1)) - link_count += 1 - - for col in xrange(num_columns): - for row in xrange(num_rows): - if (row + 1 < num_rows): - north_id = col + (row * num_columns) - south_id = col + ((row + 1) * num_columns) - int_links.append(IntLink(link_id=link_count, - node_a=mesh.routers[north_id], - node_b=mesh.routers[south_id], - weight=2)) - link_count += 1 - - mesh.int_links = int_links - mesh.ext_links = ext_links - - return mesh diff --git a/src/mem/ruby/network/topologies/MeshDirCorners.py b/src/mem/ruby/network/topologies/MeshDirCorners.py deleted file mode 100644 index 7be8b9101..000000000 --- a/src/mem/ruby/network/topologies/MeshDirCorners.py +++ /dev/null @@ -1,132 +0,0 @@ -# Copyright (c) 2010 Advanced Micro Devices, Inc. -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer; -# redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in the -# documentation and/or other materials provided with the distribution; -# neither the name of the copyright holders nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -# -# Authors: Brad Beckmann - -from m5.params import * -from m5.objects import * - -class MeshDirCorners(Topology): - description='MeshDirCorners' - -# This file contains a special network creation function. This -# networks is not general and will only work with specific system -# configurations. The network specified is similar to GEMS old file -# specified network. - -def makeTopology(nodes, options, IntLink, ExtLink, Router): - num_routers = options.num_cpus - num_rows = options.mesh_rows - - # First determine which nodes are cache cntrls vs. dirs vs. dma - cache_nodes = [] - dir_nodes = [] - dma_nodes = [] - for node in nodes: - if node.type == 'L1Cache_Controller' or \ - node.type == 'L2Cache_Controller': - cache_nodes.append(node) - elif node.type == 'Directory_Controller': - dir_nodes.append(node) - elif node.type == 'DMA_Controller': - dma_nodes.append(node) - - # Obviously the number or rows must be <= the number of routers - # and evenly divisible. Also the number of caches must be a - # multiple of the number of routers and the number of directories - # must be four. - assert(num_rows <= num_routers) - num_columns = int(num_routers / num_rows) - assert(num_columns * num_rows == num_routers) - caches_per_router, remainder = divmod(len(cache_nodes), num_routers) - assert(remainder == 0) - assert(len(dir_nodes) == 4) - - mesh = MeshDirCorners() - - # Create the routers in the mesh - mesh.routers = [Router(router_id=i) for i in range(num_routers)] - - # link counter to set unique link ids - link_count = 0 - - # Connect each cache controller to the appropriate router - ext_links = [] - for (i, n) in enumerate(cache_nodes): - cntrl_level, router_id = divmod(i, num_routers) - assert(cntrl_level < caches_per_router) - ext_links.append(ExtLink(link_id=link_count, ext_node=n, - int_node=mesh.routers[router_id])) - link_count += 1 - - # Connect the dir nodes to the corners. - ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[0], - int_node=mesh.routers[0])) - link_count += 1 - ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[1], - int_node=mesh.routers[num_columns - 1])) - link_count += 1 - ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[2], - int_node=mesh.routers[num_routers - num_columns])) - link_count += 1 - ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[3], - int_node=mesh.routers[num_routers - 1])) - link_count += 1 - - # Connect the dma nodes to router 0. These should only be DMA nodes. - for (i, node) in enumerate(dma_nodes): - assert(node.type == 'DMA_Controller') - ext_links.append(ExtLink(link_id=link_count, ext_node=node, int_node=mesh.routers[0])) - - # Create the mesh links. First row (east-west) links then column - # (north-south) links - int_links = [] - for row in xrange(num_rows): - for col in xrange(num_columns): - if (col + 1 < num_columns): - east_id = col + (row * num_columns) - west_id = (col + 1) + (row * num_columns) - int_links.append(IntLink(link_id=link_count, - node_a=mesh.routers[east_id], - node_b=mesh.routers[west_id], - weight=1)) - link_count += 1 - - for col in xrange(num_columns): - for row in xrange(num_rows): - if (row + 1 < num_rows): - north_id = col + (row * num_columns) - south_id = col + ((row + 1) * num_columns) - int_links.append(IntLink(link_id=link_count, - node_a=mesh.routers[north_id], - node_b=mesh.routers[south_id], - weight=2)) - link_count += 1 - - mesh.ext_links = ext_links - mesh.int_links = int_links - - return mesh diff --git a/src/mem/ruby/network/topologies/Pt2Pt.py b/src/mem/ruby/network/topologies/Pt2Pt.py deleted file mode 100644 index f6ca13626..000000000 --- a/src/mem/ruby/network/topologies/Pt2Pt.py +++ /dev/null @@ -1,57 +0,0 @@ -# Copyright (c) 2011 Advanced Micro Devices, Inc. -# 2011 Massachusetts Institute of Technology -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer; -# redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in the -# documentation and/or other materials provided with the distribution; -# neither the name of the copyright holders nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -# -# Authors: Brad Beckmann -# Tushar Krishna - -from m5.params import * -from m5.objects import * - -class Pt2Pt(Topology): - description='Pt2Pt' - -def makeTopology(nodes, options, IntLink, ExtLink, Router): - # Create an individual router for each controller, and connect all to all. - pt2pt = Pt2Pt() - pt2pt.routers = [Router(router_id=i) for i in range(len(nodes))] - ext_links = [ExtLink(link_id=i, ext_node=n, int_node=pt2pt.routers[i]) - for (i, n) in enumerate(nodes)] - link_count = len(nodes) - - int_links = [] - for i in xrange(len(nodes)): - for j in xrange(len(nodes)): - if (i != j): - link_count += 1 - int_links.append(IntLink(link_id=link_count, - node_a=pt2pt.routers[i], - node_b=pt2pt.routers[j])) - - pt2pt.ext_links = ext_links - pt2pt.int_links = int_links - - return pt2pt diff --git a/src/mem/ruby/network/topologies/SConscript b/src/mem/ruby/network/topologies/SConscript index a3c41a6d3..3d61f6dd1 100644 --- a/src/mem/ruby/network/topologies/SConscript +++ b/src/mem/ruby/network/topologies/SConscript @@ -33,8 +33,4 @@ Import('*') if env['PROTOCOL'] == 'None': Return() -PySource('', 'Crossbar.py') -PySource('', 'Mesh.py') -PySource('', 'MeshDirCorners.py') -PySource('', 'Pt2Pt.py') -PySource('', 'Torus.py') +PySource('', 'TopologyCreator.py') diff --git a/src/mem/ruby/network/topologies/TopologyCreator.py b/src/mem/ruby/network/topologies/TopologyCreator.py new file mode 100644 index 000000000..d9b989e77 --- /dev/null +++ b/src/mem/ruby/network/topologies/TopologyCreator.py @@ -0,0 +1,19 @@ + + + + +from m5.params import * +from m5.objects import * + +def instantiateTopology(topology, options, IntLink, ExtLink, Router): + + topo = Topology() + topo.description = topology.description + + routers, int_links, ext_links = topology.makeTopology(options, IntLink, ExtLink, Router) + + topo.routers = routers + topo.int_links = int_links + topo.ext_links = ext_links + + return topo diff --git a/src/mem/ruby/network/topologies/Torus.py b/src/mem/ruby/network/topologies/Torus.py deleted file mode 100644 index f3583bfc1..000000000 --- a/src/mem/ruby/network/topologies/Torus.py +++ /dev/null @@ -1,126 +0,0 @@ -# Copyright (c) 2011 Advanced Micro Devices, Inc. -# 2011 Massachusetts Institute of Technology -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer; -# redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in the -# documentation and/or other materials provided with the distribution; -# neither the name of the copyright holders nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -# -# Authors: Brad Beckmann -# Tushar Krishna - -from m5.params import * -from m5.objects import * - -class Torus(Topology): - description='Torus' - -# Makes a generic torus assuming an equal number of cache and directory cntrls -# Assuming a folded-torus on-chip layout (as shown on gem5 wiki). -# All links (including the wrap-around ones) are of equal length, double that -# of a mesh. Thus, each link is assigned a latency of 2 cycles. - -def makeTopology(nodes, options, IntLink, ExtLink, Router): - - num_routers = options.num_cpus - num_rows = options.mesh_rows - - # There must be an evenly divisible number of cntrls to routers - # Also, obviously the number or rows must be <= the number of routers - cntrls_per_router, remainder = divmod(len(nodes), num_routers) - assert(num_rows <= num_routers) - num_columns = int(num_routers / num_rows) - assert(num_columns * num_rows == num_routers) - - # Create the torus object - torus = Torus() - - # Create the routers in the torus - torus.routers = [Router(router_id=i) for i in range(num_routers)] - - # link counter to set unique link ids - link_count = 0 - - # Add all but the remainder nodes to the list of nodes to be uniformly - # distributed across the network. - network_nodes = [] - remainder_nodes = [] - for node_index in xrange(len(nodes)): - if node_index < (len(nodes) - remainder): - network_nodes.append(nodes[node_index]) - else: - remainder_nodes.append(nodes[node_index]) - - # Connect each node to the appropriate router - ext_links = [] - for (i, n) in enumerate(network_nodes): - cntrl_level, router_id = divmod(i, num_routers) - assert(cntrl_level < cntrls_per_router) - ext_links.append(ExtLink(link_id=link_count, ext_node=n, - int_node=torus.routers[router_id])) - link_count += 1 - - # Connect the remainding nodes to router 0. These should only be - # DMA nodes. - for (i, node) in enumerate(remainder_nodes): - assert(node.type == 'DMA_Controller') - assert(i < remainder) - ext_links.append(ExtLink(link_id=link_count, ext_node=node, - int_node=torus.routers[0])) - link_count += 1 - - # Create the torus links. First row (east-west) links then column - # (north-south) links - # column links are given higher weights to implement XY routing - int_links = [] - for row in xrange(num_rows): - for col in xrange(num_columns): - west_id = col + (row * num_columns) - if (col + 1 < num_columns): - east_id = (col + 1) + (row * num_columns) - else: - east_id = (row * num_columns) - int_links.append(IntLink(link_id=link_count, - node_a=torus.routers[east_id], - node_b=torus.routers[west_id], - latency=2, - weight=1)) - link_count += 1 - - for col in xrange(num_columns): - for row in xrange(num_rows): - north_id = col + (row * num_columns) - if (row + 1 < num_rows): - south_id = col + ((row + 1) * num_columns) - else: - south_id = col - int_links.append(IntLink(link_id=link_count, - node_a=torus.routers[north_id], - node_b=torus.routers[south_id], - latency=2, - weight=2)) - link_count += 1 - - torus.ext_links = ext_links - torus.int_links = int_links - - return torus 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] |