6f787e3d36
Enable more or less takes the place of check, but also allows stats to do some other configuration. Prepare moves all of the code that readies a stat for dumping into a separate function in preparation for supporting serialization of certain pieces of statistics data. While we're at it, clean up the visitor code and some of the python code.
189 lines
6.3 KiB
Python
189 lines
6.3 KiB
Python
# Copyright (c) 2005 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Nathan Binkert
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# Steve Reinhardt
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import atexit
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import os
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import sys
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# import the SWIG-wrapped main C++ functions
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import internal
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import core
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import stats
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from main import options
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import SimObject
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import ticks
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import objects
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# The final hook to generate .ini files. Called from the user script
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# once the config is built.
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def instantiate(root):
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# we need to fix the global frequency
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ticks.fixGlobalFrequency()
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root.unproxy_all()
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if options.dump_config:
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ini_file = file(os.path.join(options.outdir, options.dump_config), 'w')
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root.print_ini(ini_file)
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ini_file.close()
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# Initialize the global statistics
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stats.initSimStats()
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# Create the C++ sim objects and connect ports
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root.createCCObject()
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root.connectPorts()
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# Do a second pass to finish initializing the sim objects
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core.initAll()
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# Do a third pass to initialize statistics
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core.regAllStats()
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# We're done registering statistics. Enable the stats package now.
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stats.enable()
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# Reset to put the stats in a consistent state.
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stats.reset()
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def doDot(root):
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dot = pydot.Dot()
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instance.outputDot(dot)
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dot.orientation = "portrait"
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dot.size = "8.5,11"
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dot.ranksep="equally"
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dot.rank="samerank"
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dot.write("config.dot")
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dot.write_ps("config.ps")
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need_resume = []
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need_startup = True
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def simulate(*args, **kwargs):
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global need_resume, need_startup
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if need_startup:
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internal.core.SimStartup()
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need_startup = False
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for root in need_resume:
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resume(root)
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need_resume = []
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return internal.event.simulate(*args, **kwargs)
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# Export curTick to user script.
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def curTick():
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return internal.core.cvar.curTick
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# Python exit handlers happen in reverse order. We want to dump stats last.
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atexit.register(internal.stats.dump)
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# register our C++ exit callback function with Python
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atexit.register(internal.core.doExitCleanup)
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# This loops until all objects have been fully drained.
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def doDrain(root):
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all_drained = drain(root)
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while (not all_drained):
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all_drained = drain(root)
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# Tries to drain all objects. Draining might not be completed unless
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# all objects return that they are drained on the first call. This is
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# because as objects drain they may cause other objects to no longer
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# be drained.
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def drain(root):
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all_drained = False
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drain_event = internal.event.createCountedDrain()
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unready_objects = root.startDrain(drain_event, True)
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# If we've got some objects that can't drain immediately, then simulate
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if unready_objects > 0:
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drain_event.setCount(unready_objects)
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simulate()
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else:
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all_drained = True
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internal.event.cleanupCountedDrain(drain_event)
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return all_drained
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def resume(root):
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root.resume()
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def checkpoint(root, dir):
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if not isinstance(root, objects.Root):
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raise TypeError, "Checkpoint must be called on a root object."
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doDrain(root)
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print "Writing checkpoint"
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internal.core.serializeAll(dir)
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resume(root)
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def restoreCheckpoint(root, dir):
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print "Restoring from checkpoint"
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internal.core.unserializeAll(dir)
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need_resume.append(root)
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def changeToAtomic(system):
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if not isinstance(system, (objects.Root, objects.System)):
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raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
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(type(system), objects.Root, objects.System)
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if system.getMemoryMode() != objects.params.atomic:
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doDrain(system)
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print "Changing memory mode to atomic"
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system.changeTiming(objects.params.atomic)
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def changeToTiming(system):
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if not isinstance(system, (objects.Root, objects.System)):
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raise TypeError, "Parameter of type '%s'. Must be type %s or %s." % \
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(type(system), objects.Root, objects.System)
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if system.getMemoryMode() != objects.params.timing:
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doDrain(system)
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print "Changing memory mode to timing"
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system.changeTiming(objects.params.timing)
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def switchCpus(cpuList):
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print "switching cpus"
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if not isinstance(cpuList, list):
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raise RuntimeError, "Must pass a list to this function"
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for item in cpuList:
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if not isinstance(item, tuple) or len(item) != 2:
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raise RuntimeError, "List must have tuples of (oldCPU,newCPU)"
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for old_cpu, new_cpu in cpuList:
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if not isinstance(old_cpu, objects.BaseCPU):
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raise TypeError, "%s is not of type BaseCPU" % old_cpu
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if not isinstance(new_cpu, objects.BaseCPU):
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raise TypeError, "%s is not of type BaseCPU" % new_cpu
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# Now all of the CPUs are ready to be switched out
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for old_cpu, new_cpu in cpuList:
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old_cpu._ccObject.switchOut()
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for old_cpu, new_cpu in cpuList:
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new_cpu.takeOverFrom(old_cpu)
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from internal.core import disableAllListeners
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