1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
# Copyright (c) 2005 The Regents of The University of Michigan
# 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: Nathan Binkert
# Steve Reinhardt
import atexit
import os
import sys
# import the SWIG-wrapped main C++ functions
import internal
import core
import stats
from main import options
import SimObject
import ticks
import objects
from util import fatal
# define a MaxTick parameter
MaxTick = 2**63 - 1
# The final hook to generate .ini files. Called from the user script
# once the config is built.
def instantiate(ckpt_dir=None):
root = objects.Root.getInstance()
if not root:
fatal("Need to instantiate Root() before calling instantiate()")
# we need to fix the global frequency
ticks.fixGlobalFrequency()
# Make sure SimObject-valued params are in the configuration
# hierarchy so we catch them with future descendants() walks
for obj in root.descendants(): obj.adoptOrphanParams()
# Unproxy in sorted order for determinism
for obj in root.descendants(): obj.unproxyParams()
if options.dump_config:
ini_file = file(os.path.join(options.outdir, options.dump_config), 'w')
# Print ini sections in sorted order for easier diffing
for obj in sorted(root.descendants(), key=lambda o: o.path()):
obj.print_ini(ini_file)
ini_file.close()
# Initialize the global statistics
stats.initSimStats()
# Create the C++ sim objects and connect ports
for obj in root.descendants(): obj.createCCObject()
for obj in root.descendants(): obj.connectPorts()
# Do a second pass to finish initializing the sim objects
for obj in root.descendants(): obj.init()
# Do a third pass to initialize statistics
for obj in root.descendants(): obj.regStats()
for obj in root.descendants(): obj.regFormulas()
# We're done registering statistics. Enable the stats package now.
stats.enable()
# Restore checkpoint (if any)
if ckpt_dir:
internal.core.unserializeAll(ckpt_dir)
need_resume.append(root)
# Reset to put the stats in a consistent state.
stats.reset()
def doDot(root):
dot = pydot.Dot()
instance.outputDot(dot)
dot.orientation = "portrait"
dot.size = "8.5,11"
dot.ranksep="equally"
dot.rank="samerank"
dot.write("config.dot")
dot.write_ps("config.ps")
need_resume = []
need_startup = True
def simulate(*args, **kwargs):
global need_resume, need_startup
if need_startup:
root = objects.Root.getInstance()
for obj in root.descendants(): obj.startup()
need_startup = False
for root in need_resume:
resume(root)
need_resume = []
return internal.event.simulate(*args, **kwargs)
# Export curTick to user script.
def curTick():
return internal.core.cvar.curTick
# Python exit handlers happen in reverse order. We want to dump stats last.
atexit.register(internal.stats.dump)
# register our C++ exit callback function with Python
atexit.register(internal.core.doExitCleanup)
# This loops until all objects have been fully drained.
def doDrain(root):
all_drained = drain(root)
while (not all_drained):
all_drained = drain(root)
# Tries to drain all objects. Draining might not be completed unless
# all objects return that they are drained on the first call. This is
# because as objects drain they may cause other objects to no longer
# be drained.
def drain(root):
all_drained = False
drain_event = internal.event.createCountedDrain()
unready_objs = sum(obj.drain(drain_event) for obj in root.descendants())
# If we've got some objects that can't drain immediately, then simulate
if unready_objs > 0:
drain_event.setCount(unready_objs)
simulate()
else:
all_drained = True
internal.event.cleanupCountedDrain(drain_event)
return all_drained
def resume(root):
for obj in root.descendants(): obj.resume()
def checkpoint(dir):
root = objects.Root.getInstance()
if not isinstance(root, objects.Root):
raise TypeError, "Checkpoint must be called on a root object."
doDrain(root)
print "Writing checkpoint"
internal.core.serializeAll(dir)
resume(root)
def changeToAtomic(system):
if not isinstance(system, (objects.Root, objects.System)):
raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
(type(system), objects.Root, objects.System)
if system.getMemoryMode() != objects.params.atomic:
doDrain(system)
print "Changing memory mode to atomic"
for obj in system.descendants():
obj.changeTiming(objects.params.atomic)
def changeToTiming(system):
if not isinstance(system, (objects.Root, objects.System)):
raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
(type(system), objects.Root, objects.System)
if system.getMemoryMode() != objects.params.timing:
doDrain(system)
print "Changing memory mode to timing"
for obj in system.descendants():
obj.changeTiming(objects.params.timing)
def switchCpus(cpuList):
print "switching cpus"
if not isinstance(cpuList, list):
raise RuntimeError, "Must pass a list to this function"
for item in cpuList:
if not isinstance(item, tuple) or len(item) != 2:
raise RuntimeError, "List must have tuples of (oldCPU,newCPU)"
for old_cpu, new_cpu in cpuList:
if not isinstance(old_cpu, objects.BaseCPU):
raise TypeError, "%s is not of type BaseCPU" % old_cpu
if not isinstance(new_cpu, objects.BaseCPU):
raise TypeError, "%s is not of type BaseCPU" % new_cpu
# Now all of the CPUs are ready to be switched out
for old_cpu, new_cpu in cpuList:
old_cpu._ccObject.switchOut()
for old_cpu, new_cpu in cpuList:
new_cpu.takeOverFrom(old_cpu)
from internal.core import disableAllListeners
|
