69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
from itertools import count
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import networkx as nx
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import matplotlib.pyplot as plt
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from migen.flow.network import *
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from migen.flow.transactions import *
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from migen.actorlib import structuring
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from migen.actorlib.sim import *
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from migen.flow import perftools
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from migen.sim.generic import run_simulation
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pack_factor = 5
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base_layout = [("value", 32)]
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packed_layout = structuring.pack_layout(base_layout, pack_factor)
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rawbits_layout = [("value", 32*pack_factor)]
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def source_gen():
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for i in count(0):
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yield Token("source", {"value": i})
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class SimSource(SimActor):
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def __init__(self):
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self.source = Source(base_layout)
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SimActor.__init__(self, source_gen())
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def sink_gen():
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while True:
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t = Token("sink")
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yield t
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print(t.value["value"])
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class SimSink(SimActor):
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def __init__(self):
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self.sink = Sink(base_layout)
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SimActor.__init__(self, sink_gen())
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class TB(Module):
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def __init__(self):
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source = SimSource()
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sink = SimSink()
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# A tortuous way of passing integer tokens.
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packer = structuring.Pack(base_layout, pack_factor)
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to_raw = structuring.Cast(packed_layout, rawbits_layout)
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from_raw = structuring.Cast(rawbits_layout, packed_layout)
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unpacker = structuring.Unpack(pack_factor, base_layout)
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self.g = DataFlowGraph()
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self.g.add_connection(source, packer)
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self.g.add_connection(packer, to_raw)
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self.g.add_connection(to_raw, from_raw)
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self.g.add_connection(from_raw, unpacker)
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self.g.add_connection(unpacker, sink)
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self.submodules.comp = CompositeActor(self.g)
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self.submodules.reporter = perftools.DFGReporter(self.g)
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if __name__ == "__main__":
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tb = TB()
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run_simulation(tb, ncycles=1000)
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g = nx.MultiDiGraph()
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for u, v, edge in tb.g.edges_iter():
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g.add_edge(u, v, **edge)
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g_layout = nx.spectral_layout(g)
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nx.draw(g, g_layout)
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nx.draw_networkx_edge_labels(g, g_layout, tb.reporter.get_edge_labels())
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plt.show()
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