simulate.py (7525:722f2ad014a7) simulate.py (7527:fe90827a663f)
1# Copyright (c) 2005 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright

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50 root = objects.Root.getInstance()
51
52 if not root:
53 fatal("Need to instantiate Root() before calling instantiate()")
54
55 # we need to fix the global frequency
56 ticks.fixGlobalFrequency()
57
1# Copyright (c) 2005 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright

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50 root = objects.Root.getInstance()
51
52 if not root:
53 fatal("Need to instantiate Root() before calling instantiate()")
54
55 # we need to fix the global frequency
56 ticks.fixGlobalFrequency()
57
58 root.unproxy_all()
58 # Unproxy in sorted order for determinism
59 for obj in root.descendants(): obj.unproxyParams()
59
60 if options.dump_config:
61 ini_file = file(os.path.join(options.outdir, options.dump_config), 'w')
60
61 if options.dump_config:
62 ini_file = file(os.path.join(options.outdir, options.dump_config), 'w')
62 root.print_ini(ini_file)
63 # Print ini sections in sorted order for easier diffing
64 for obj in sorted(root.descendants(), key=lambda o: o.path()):
65 obj.print_ini(ini_file)
63 ini_file.close()
64
65 # Initialize the global statistics
66 stats.initSimStats()
67
68 # Create the C++ sim objects and connect ports
66 ini_file.close()
67
68 # Initialize the global statistics
69 stats.initSimStats()
70
71 # Create the C++ sim objects and connect ports
69 root.createCCObject()
70 root.connectPorts()
72 for obj in root.descendants(): obj.createCCObject()
73 for obj in root.descendants(): obj.connectPorts()
71
72 # Do a second pass to finish initializing the sim objects
74
75 # Do a second pass to finish initializing the sim objects
73 core.initAll()
76 for obj in root.descendants(): obj.init()
74
75 # Do a third pass to initialize statistics
77
78 # Do a third pass to initialize statistics
76 core.regAllStats()
79 for obj in root.descendants(): obj.regStats()
80 for obj in root.descendants(): obj.regFormulas()
77
78 # We're done registering statistics. Enable the stats package now.
79 stats.enable()
80
81 # Reset to put the stats in a consistent state.
82 stats.reset()
83
84def doDot(root):

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92 dot.write_ps("config.ps")
93
94need_resume = []
95need_startup = True
96def simulate(*args, **kwargs):
97 global need_resume, need_startup
98
99 if need_startup:
81
82 # We're done registering statistics. Enable the stats package now.
83 stats.enable()
84
85 # Reset to put the stats in a consistent state.
86 stats.reset()
87
88def doDot(root):

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96 dot.write_ps("config.ps")
97
98need_resume = []
99need_startup = True
100def simulate(*args, **kwargs):
101 global need_resume, need_startup
102
103 if need_startup:
100 internal.core.startupAll()
104 root = objects.Root.getInstance()
105 for obj in root.descendants(): obj.startup()
101 need_startup = False
102
103 for root in need_resume:
104 resume(root)
105 need_resume = []
106
107 return internal.event.simulate(*args, **kwargs)
108

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124
125# Tries to drain all objects. Draining might not be completed unless
126# all objects return that they are drained on the first call. This is
127# because as objects drain they may cause other objects to no longer
128# be drained.
129def drain(root):
130 all_drained = False
131 drain_event = internal.event.createCountedDrain()
106 need_startup = False
107
108 for root in need_resume:
109 resume(root)
110 need_resume = []
111
112 return internal.event.simulate(*args, **kwargs)
113

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129
130# Tries to drain all objects. Draining might not be completed unless
131# all objects return that they are drained on the first call. This is
132# because as objects drain they may cause other objects to no longer
133# be drained.
134def drain(root):
135 all_drained = False
136 drain_event = internal.event.createCountedDrain()
132 unready_objects = root.startDrain(drain_event, True)
137 unready_objs = sum(obj.drain(drain_event) for obj in root.descendants())
133 # If we've got some objects that can't drain immediately, then simulate
138 # If we've got some objects that can't drain immediately, then simulate
134 if unready_objects > 0:
135 drain_event.setCount(unready_objects)
139 if unready_objs > 0:
140 drain_event.setCount(unready_objs)
136 simulate()
137 else:
138 all_drained = True
139 internal.event.cleanupCountedDrain(drain_event)
140 return all_drained
141
142def resume(root):
141 simulate()
142 else:
143 all_drained = True
144 internal.event.cleanupCountedDrain(drain_event)
145 return all_drained
146
147def resume(root):
143 root.resume()
148 for obj in root.descendants(): obj.resume()
144
145def checkpoint(dir):
146 root = objects.Root.getInstance()
147 if not isinstance(root, objects.Root):
148 raise TypeError, "Checkpoint must be called on a root object."
149 doDrain(root)
150 print "Writing checkpoint"
151 internal.core.serializeAll(dir)

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160
161def changeToAtomic(system):
162 if not isinstance(system, (objects.Root, objects.System)):
163 raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
164 (type(system), objects.Root, objects.System)
165 if system.getMemoryMode() != objects.params.atomic:
166 doDrain(system)
167 print "Changing memory mode to atomic"
149
150def checkpoint(dir):
151 root = objects.Root.getInstance()
152 if not isinstance(root, objects.Root):
153 raise TypeError, "Checkpoint must be called on a root object."
154 doDrain(root)
155 print "Writing checkpoint"
156 internal.core.serializeAll(dir)

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165
166def changeToAtomic(system):
167 if not isinstance(system, (objects.Root, objects.System)):
168 raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
169 (type(system), objects.Root, objects.System)
170 if system.getMemoryMode() != objects.params.atomic:
171 doDrain(system)
172 print "Changing memory mode to atomic"
168 system.changeTiming(objects.params.atomic)
173 for obj in system.descendants():
174 obj.changeTiming(objects.params.atomic)
169
170def changeToTiming(system):
171 if not isinstance(system, (objects.Root, objects.System)):
172 raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
173 (type(system), objects.Root, objects.System)
174
175 if system.getMemoryMode() != objects.params.timing:
176 doDrain(system)
177 print "Changing memory mode to timing"
175
176def changeToTiming(system):
177 if not isinstance(system, (objects.Root, objects.System)):
178 raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
179 (type(system), objects.Root, objects.System)
180
181 if system.getMemoryMode() != objects.params.timing:
182 doDrain(system)
183 print "Changing memory mode to timing"
178 system.changeTiming(objects.params.timing)
184 for obj in system.descendants():
185 obj.changeTiming(objects.params.timing)
179
180def switchCpus(cpuList):
181 print "switching cpus"
182 if not isinstance(cpuList, list):
183 raise RuntimeError, "Must pass a list to this function"
184 for item in cpuList:
185 if not isinstance(item, tuple) or len(item) != 2:
186 raise RuntimeError, "List must have tuples of (oldCPU,newCPU)"

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187def switchCpus(cpuList):
188 print "switching cpus"
189 if not isinstance(cpuList, list):
190 raise RuntimeError, "Must pass a list to this function"
191 for item in cpuList:
192 if not isinstance(item, tuple) or len(item) != 2:
193 raise RuntimeError, "List must have tuples of (oldCPU,newCPU)"

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