SimObject.py revision 5488
1# Copyright (c) 2004-2006 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 9# notice, this list of conditions and the following disclaimer in the 10# documentation and/or other materials provided with the distribution; 11# neither the name of the copyright holders nor the names of its 12# contributors may be used to endorse or promote products derived from 13# this software without specific prior written permission. 14# 15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26# 27# Authors: Steve Reinhardt 28# Nathan Binkert 29 30import sys, types 31 32import proxy 33import m5 34from util import * 35 36# These utility functions have to come first because they're 37# referenced in params.py... otherwise they won't be defined when we 38# import params below, and the recursive import of this file from 39# params.py will not find these names. 40def isSimObject(value): 41 return isinstance(value, SimObject) 42 43def isSimObjectClass(value): 44 return issubclass(value, SimObject) 45 46def isSimObjectSequence(value): 47 if not isinstance(value, (list, tuple)) or len(value) == 0: 48 return False 49 50 for val in value: 51 if not isNullPointer(val) and not isSimObject(val): 52 return False 53 54 return True 55 56def isSimObjectOrSequence(value): 57 return isSimObject(value) or isSimObjectSequence(value) 58 59# Have to import params up top since Param is referenced on initial 60# load (when SimObject class references Param to create a class 61# variable, the 'name' param)... 62from params import * 63# There are a few things we need that aren't in params.__all__ since 64# normal users don't need them 65from params import ParamDesc, VectorParamDesc, isNullPointer, SimObjVector 66 67noDot = False 68try: 69 import pydot 70except: 71 noDot = True 72 73##################################################################### 74# 75# M5 Python Configuration Utility 76# 77# The basic idea is to write simple Python programs that build Python 78# objects corresponding to M5 SimObjects for the desired simulation 79# configuration. For now, the Python emits a .ini file that can be 80# parsed by M5. In the future, some tighter integration between M5 81# and the Python interpreter may allow bypassing the .ini file. 82# 83# Each SimObject class in M5 is represented by a Python class with the 84# same name. The Python inheritance tree mirrors the M5 C++ tree 85# (e.g., SimpleCPU derives from BaseCPU in both cases, and all 86# SimObjects inherit from a single SimObject base class). To specify 87# an instance of an M5 SimObject in a configuration, the user simply 88# instantiates the corresponding Python object. The parameters for 89# that SimObject are given by assigning to attributes of the Python 90# object, either using keyword assignment in the constructor or in 91# separate assignment statements. For example: 92# 93# cache = BaseCache(size='64KB') 94# cache.hit_latency = 3 95# cache.assoc = 8 96# 97# The magic lies in the mapping of the Python attributes for SimObject 98# classes to the actual SimObject parameter specifications. This 99# allows parameter validity checking in the Python code. Continuing 100# the example above, the statements "cache.blurfl=3" or 101# "cache.assoc='hello'" would both result in runtime errors in Python, 102# since the BaseCache object has no 'blurfl' parameter and the 'assoc' 103# parameter requires an integer, respectively. This magic is done 104# primarily by overriding the special __setattr__ method that controls 105# assignment to object attributes. 106# 107# Once a set of Python objects have been instantiated in a hierarchy, 108# calling 'instantiate(obj)' (where obj is the root of the hierarchy) 109# will generate a .ini file. 110# 111##################################################################### 112 113# list of all SimObject classes 114allClasses = {} 115 116# dict to look up SimObjects based on path 117instanceDict = {} 118 119# The metaclass for SimObject. This class controls how new classes 120# that derive from SimObject are instantiated, and provides inherited 121# class behavior (just like a class controls how instances of that 122# class are instantiated, and provides inherited instance behavior). 123class MetaSimObject(type): 124 # Attributes that can be set only at initialization time 125 init_keywords = { 'abstract' : types.BooleanType, 126 'cxx_namespace' : types.StringType, 127 'cxx_class' : types.StringType, 128 'cxx_type' : types.StringType, 129 'cxx_predecls' : types.ListType, 130 'swig_objdecls' : types.ListType, 131 'swig_predecls' : types.ListType, 132 'type' : types.StringType } 133 # Attributes that can be set any time 134 keywords = { 'check' : types.FunctionType } 135 136 # __new__ is called before __init__, and is where the statements 137 # in the body of the class definition get loaded into the class's 138 # __dict__. We intercept this to filter out parameter & port assignments 139 # and only allow "private" attributes to be passed to the base 140 # __new__ (starting with underscore). 141 def __new__(mcls, name, bases, dict): 142 assert name not in allClasses 143 144 # Copy "private" attributes, functions, and classes to the 145 # official dict. Everything else goes in _init_dict to be 146 # filtered in __init__. 147 cls_dict = {} 148 value_dict = {} 149 for key,val in dict.items(): 150 if key.startswith('_') or isinstance(val, (types.FunctionType, 151 types.TypeType)): 152 cls_dict[key] = val 153 else: 154 # must be a param/port setting 155 value_dict[key] = val 156 if 'abstract' not in value_dict: 157 value_dict['abstract'] = False 158 cls_dict['_value_dict'] = value_dict 159 cls = super(MetaSimObject, mcls).__new__(mcls, name, bases, cls_dict) 160 if 'type' in value_dict: 161 allClasses[name] = cls 162 return cls 163 164 # subclass initialization 165 def __init__(cls, name, bases, dict): 166 # calls type.__init__()... I think that's a no-op, but leave 167 # it here just in case it's not. 168 super(MetaSimObject, cls).__init__(name, bases, dict) 169 170 # initialize required attributes 171 172 # class-only attributes 173 cls._params = multidict() # param descriptions 174 cls._ports = multidict() # port descriptions 175 176 # class or instance attributes 177 cls._values = multidict() # param values 178 cls._port_refs = multidict() # port ref objects 179 cls._instantiated = False # really instantiated, cloned, or subclassed 180 181 # We don't support multiple inheritance. If you want to, you 182 # must fix multidict to deal with it properly. 183 if len(bases) > 1: 184 raise TypeError, "SimObjects do not support multiple inheritance" 185 186 base = bases[0] 187 188 # Set up general inheritance via multidicts. A subclass will 189 # inherit all its settings from the base class. The only time 190 # the following is not true is when we define the SimObject 191 # class itself (in which case the multidicts have no parent). 192 if isinstance(base, MetaSimObject): 193 cls._params.parent = base._params 194 cls._ports.parent = base._ports 195 cls._values.parent = base._values 196 cls._port_refs.parent = base._port_refs 197 # mark base as having been subclassed 198 base._instantiated = True 199 200 # default keyword values 201 if 'type' in cls._value_dict: 202 _type = cls._value_dict['type'] 203 if 'cxx_class' not in cls._value_dict: 204 cls._value_dict['cxx_class'] = _type 205 206 namespace = cls._value_dict.get('cxx_namespace', None) 207 208 _cxx_class = cls._value_dict['cxx_class'] 209 if 'cxx_type' not in cls._value_dict: 210 t = _cxx_class + '*' 211 if namespace: 212 t = '%s::%s' % (namespace, t) 213 cls._value_dict['cxx_type'] = t 214 if 'cxx_predecls' not in cls._value_dict: 215 # A forward class declaration is sufficient since we are 216 # just declaring a pointer. 217 decl = 'class %s;' % _cxx_class 218 if namespace: 219 namespaces = namespace.split('::') 220 namespaces.reverse() 221 for namespace in namespaces: 222 decl = 'namespace %s { %s }' % (namespace, decl) 223 cls._value_dict['cxx_predecls'] = [decl] 224 225 if 'swig_predecls' not in cls._value_dict: 226 # A forward class declaration is sufficient since we are 227 # just declaring a pointer. 228 cls._value_dict['swig_predecls'] = \ 229 cls._value_dict['cxx_predecls'] 230 231 if 'swig_objdecls' not in cls._value_dict: 232 cls._value_dict['swig_objdecls'] = [] 233 234 # Now process the _value_dict items. They could be defining 235 # new (or overriding existing) parameters or ports, setting 236 # class keywords (e.g., 'abstract'), or setting parameter 237 # values or port bindings. The first 3 can only be set when 238 # the class is defined, so we handle them here. The others 239 # can be set later too, so just emulate that by calling 240 # setattr(). 241 for key,val in cls._value_dict.items(): 242 # param descriptions 243 if isinstance(val, ParamDesc): 244 cls._new_param(key, val) 245 246 # port objects 247 elif isinstance(val, Port): 248 cls._new_port(key, val) 249 250 # init-time-only keywords 251 elif cls.init_keywords.has_key(key): 252 cls._set_keyword(key, val, cls.init_keywords[key]) 253 254 # default: use normal path (ends up in __setattr__) 255 else: 256 setattr(cls, key, val) 257 258 def _set_keyword(cls, keyword, val, kwtype): 259 if not isinstance(val, kwtype): 260 raise TypeError, 'keyword %s has bad type %s (expecting %s)' % \ 261 (keyword, type(val), kwtype) 262 if isinstance(val, types.FunctionType): 263 val = classmethod(val) 264 type.__setattr__(cls, keyword, val) 265 266 def _new_param(cls, name, pdesc): 267 # each param desc should be uniquely assigned to one variable 268 assert(not hasattr(pdesc, 'name')) 269 pdesc.name = name 270 cls._params[name] = pdesc 271 if hasattr(pdesc, 'default'): 272 cls._set_param(name, pdesc.default, pdesc) 273 274 def _set_param(cls, name, value, param): 275 assert(param.name == name) 276 try: 277 cls._values[name] = param.convert(value) 278 except Exception, e: 279 msg = "%s\nError setting param %s.%s to %s\n" % \ 280 (e, cls.__name__, name, value) 281 e.args = (msg, ) 282 raise 283 284 def _new_port(cls, name, port): 285 # each port should be uniquely assigned to one variable 286 assert(not hasattr(port, 'name')) 287 port.name = name 288 cls._ports[name] = port 289 if hasattr(port, 'default'): 290 cls._cls_get_port_ref(name).connect(port.default) 291 292 # same as _get_port_ref, effectively, but for classes 293 def _cls_get_port_ref(cls, attr): 294 # Return reference that can be assigned to another port 295 # via __setattr__. There is only ever one reference 296 # object per port, but we create them lazily here. 297 ref = cls._port_refs.get(attr) 298 if not ref: 299 ref = cls._ports[attr].makeRef(cls) 300 cls._port_refs[attr] = ref 301 return ref 302 303 # Set attribute (called on foo.attr = value when foo is an 304 # instance of class cls). 305 def __setattr__(cls, attr, value): 306 # normal processing for private attributes 307 if attr.startswith('_'): 308 type.__setattr__(cls, attr, value) 309 return 310 311 if cls.keywords.has_key(attr): 312 cls._set_keyword(attr, value, cls.keywords[attr]) 313 return 314 315 if cls._ports.has_key(attr): 316 cls._cls_get_port_ref(attr).connect(value) 317 return 318 319 if isSimObjectOrSequence(value) and cls._instantiated: 320 raise RuntimeError, \ 321 "cannot set SimObject parameter '%s' after\n" \ 322 " class %s has been instantiated or subclassed" \ 323 % (attr, cls.__name__) 324 325 # check for param 326 param = cls._params.get(attr) 327 if param: 328 cls._set_param(attr, value, param) 329 return 330 331 if isSimObjectOrSequence(value): 332 # If RHS is a SimObject, it's an implicit child assignment. 333 # Classes don't have children, so we just put this object 334 # in _values; later, each instance will do a 'setattr(self, 335 # attr, _values[attr])' in SimObject.__init__ which will 336 # add this object as a child. 337 cls._values[attr] = value 338 return 339 340 # no valid assignment... raise exception 341 raise AttributeError, \ 342 "Class %s has no parameter \'%s\'" % (cls.__name__, attr) 343 344 def __getattr__(cls, attr): 345 if cls._values.has_key(attr): 346 return cls._values[attr] 347 348 raise AttributeError, \ 349 "object '%s' has no attribute '%s'" % (cls.__name__, attr) 350 351 def __str__(cls): 352 return cls.__name__ 353 354 def get_base(cls): 355 if str(cls) == 'SimObject': 356 return None 357 358 return cls.__bases__[0].type 359 360 def cxx_decl(cls): 361 code = "#ifndef __PARAMS__%s\n" % cls 362 code += "#define __PARAMS__%s\n\n" % cls 363 364 # The 'dict' attribute restricts us to the params declared in 365 # the object itself, not including inherited params (which 366 # will also be inherited from the base class's param struct 367 # here). 368 params = cls._params.local.values() 369 try: 370 ptypes = [p.ptype for p in params] 371 except: 372 print cls, p, p.ptype_str 373 print params 374 raise 375 376 # get a list of lists of predeclaration lines 377 predecls = [] 378 predecls.extend(cls.cxx_predecls) 379 for p in params: 380 predecls.extend(p.cxx_predecls()) 381 # remove redundant lines 382 predecls2 = [] 383 for pd in predecls: 384 if pd not in predecls2: 385 predecls2.append(pd) 386 predecls2.sort() 387 code += "\n".join(predecls2) 388 code += "\n\n"; 389 390 base = cls.get_base() 391 if base: 392 code += '#include "params/%s.hh"\n\n' % base 393 394 for ptype in ptypes: 395 if issubclass(ptype, Enum): 396 code += '#include "enums/%s.hh"\n' % ptype.__name__ 397 code += "\n\n" 398 399 code += cls.cxx_struct(base, params) 400 401 # close #ifndef __PARAMS__* guard 402 code += "\n#endif\n" 403 return code 404 405 def cxx_struct(cls, base, params): 406 if cls == SimObject: 407 return '#include "sim/sim_object_params.hh"\n' 408 409 # now generate the actual param struct 410 code = "struct %sParams" % cls 411 if base: 412 code += " : public %sParams" % base 413 code += "\n{\n" 414 if not hasattr(cls, 'abstract') or not cls.abstract: 415 if 'type' in cls.__dict__: 416 code += " %s create();\n" % cls.cxx_type 417 decls = [p.cxx_decl() for p in params] 418 decls.sort() 419 code += "".join([" %s\n" % d for d in decls]) 420 code += "};\n" 421 422 return code 423 424 def cxx_type_decl(cls): 425 base = cls.get_base() 426 code = '' 427 428 if base: 429 code += '#include "%s_type.h"\n' % base 430 431 # now generate dummy code for inheritance 432 code += "struct %s" % cls.cxx_class 433 if base: 434 code += " : public %s" % base.cxx_class 435 code += "\n{};\n" 436 437 return code 438 439 def swig_decl(cls): 440 base = cls.get_base() 441 442 code = '%%module %s\n' % cls 443 444 code += '%{\n' 445 code += '#include "params/%s.hh"\n' % cls 446 code += '%}\n\n' 447 448 # The 'dict' attribute restricts us to the params declared in 449 # the object itself, not including inherited params (which 450 # will also be inherited from the base class's param struct 451 # here). 452 params = cls._params.local.values() 453 ptypes = [p.ptype for p in params] 454 455 # get a list of lists of predeclaration lines 456 predecls = [] 457 predecls.extend([ p.swig_predecls() for p in params ]) 458 # flatten 459 predecls = reduce(lambda x,y:x+y, predecls, []) 460 # remove redundant lines 461 predecls2 = [] 462 for pd in predecls: 463 if pd not in predecls2: 464 predecls2.append(pd) 465 predecls2.sort() 466 code += "\n".join(predecls2) 467 code += "\n\n"; 468 469 if base: 470 code += '%%import "params/%s.i"\n\n' % base 471 472 for ptype in ptypes: 473 if issubclass(ptype, Enum): 474 code += '%%import "enums/%s.hh"\n' % ptype.__name__ 475 code += "\n\n" 476 477 code += '%%import "params/%s_type.hh"\n\n' % cls 478 code += '%%include "params/%s.hh"\n\n' % cls 479 480 return code 481 482# The SimObject class is the root of the special hierarchy. Most of 483# the code in this class deals with the configuration hierarchy itself 484# (parent/child node relationships). 485class SimObject(object): 486 # Specify metaclass. Any class inheriting from SimObject will 487 # get this metaclass. 488 __metaclass__ = MetaSimObject 489 type = 'SimObject' 490 abstract = True 491 492 swig_objdecls = [ '%include "python/swig/sim_object.i"' ] 493 494 # Initialize new instance. For objects with SimObject-valued 495 # children, we need to recursively clone the classes represented 496 # by those param values as well in a consistent "deep copy"-style 497 # fashion. That is, we want to make sure that each instance is 498 # cloned only once, and that if there are multiple references to 499 # the same original object, we end up with the corresponding 500 # cloned references all pointing to the same cloned instance. 501 def __init__(self, **kwargs): 502 ancestor = kwargs.get('_ancestor') 503 memo_dict = kwargs.get('_memo') 504 if memo_dict is None: 505 # prepare to memoize any recursively instantiated objects 506 memo_dict = {} 507 elif ancestor: 508 # memoize me now to avoid problems with recursive calls 509 memo_dict[ancestor] = self 510 511 if not ancestor: 512 ancestor = self.__class__ 513 ancestor._instantiated = True 514 515 # initialize required attributes 516 self._parent = None 517 self._children = {} 518 self._ccObject = None # pointer to C++ object 519 self._ccParams = None 520 self._instantiated = False # really "cloned" 521 522 # Inherit parameter values from class using multidict so 523 # individual value settings can be overridden. 524 self._values = multidict(ancestor._values) 525 # clone SimObject-valued parameters 526 for key,val in ancestor._values.iteritems(): 527 if isSimObject(val): 528 setattr(self, key, val(_memo=memo_dict)) 529 elif isSimObjectSequence(val) and len(val): 530 setattr(self, key, [ v(_memo=memo_dict) for v in val ]) 531 # clone port references. no need to use a multidict here 532 # since we will be creating new references for all ports. 533 self._port_refs = {} 534 for key,val in ancestor._port_refs.iteritems(): 535 self._port_refs[key] = val.clone(self, memo_dict) 536 # apply attribute assignments from keyword args, if any 537 for key,val in kwargs.iteritems(): 538 setattr(self, key, val) 539 540 # "Clone" the current instance by creating another instance of 541 # this instance's class, but that inherits its parameter values 542 # and port mappings from the current instance. If we're in a 543 # "deep copy" recursive clone, check the _memo dict to see if 544 # we've already cloned this instance. 545 def __call__(self, **kwargs): 546 memo_dict = kwargs.get('_memo') 547 if memo_dict is None: 548 # no memo_dict: must be top-level clone operation. 549 # this is only allowed at the root of a hierarchy 550 if self._parent: 551 raise RuntimeError, "attempt to clone object %s " \ 552 "not at the root of a tree (parent = %s)" \ 553 % (self, self._parent) 554 # create a new dict and use that. 555 memo_dict = {} 556 kwargs['_memo'] = memo_dict 557 elif memo_dict.has_key(self): 558 # clone already done & memoized 559 return memo_dict[self] 560 return self.__class__(_ancestor = self, **kwargs) 561 562 def _get_port_ref(self, attr): 563 # Return reference that can be assigned to another port 564 # via __setattr__. There is only ever one reference 565 # object per port, but we create them lazily here. 566 ref = self._port_refs.get(attr) 567 if not ref: 568 ref = self._ports[attr].makeRef(self) 569 self._port_refs[attr] = ref 570 return ref 571 572 def __getattr__(self, attr): 573 if self._ports.has_key(attr): 574 return self._get_port_ref(attr) 575 576 if self._values.has_key(attr): 577 return self._values[attr] 578 579 raise AttributeError, "object '%s' has no attribute '%s'" \ 580 % (self.__class__.__name__, attr) 581 582 # Set attribute (called on foo.attr = value when foo is an 583 # instance of class cls). 584 def __setattr__(self, attr, value): 585 # normal processing for private attributes 586 if attr.startswith('_'): 587 object.__setattr__(self, attr, value) 588 return 589 590 if self._ports.has_key(attr): 591 # set up port connection 592 self._get_port_ref(attr).connect(value) 593 return 594 595 if isSimObjectOrSequence(value) and self._instantiated: 596 raise RuntimeError, \ 597 "cannot set SimObject parameter '%s' after\n" \ 598 " instance been cloned %s" % (attr, `self`) 599 600 # must be SimObject param 601 param = self._params.get(attr) 602 if param: 603 try: 604 value = param.convert(value) 605 except Exception, e: 606 msg = "%s\nError setting param %s.%s to %s\n" % \ 607 (e, self.__class__.__name__, attr, value) 608 e.args = (msg, ) 609 raise 610 self._set_child(attr, value) 611 return 612 613 if isSimObjectOrSequence(value): 614 self._set_child(attr, value) 615 return 616 617 # no valid assignment... raise exception 618 raise AttributeError, "Class %s has no parameter %s" \ 619 % (self.__class__.__name__, attr) 620 621 622 # this hack allows tacking a '[0]' onto parameters that may or may 623 # not be vectors, and always getting the first element (e.g. cpus) 624 def __getitem__(self, key): 625 if key == 0: 626 return self 627 raise TypeError, "Non-zero index '%s' to SimObject" % key 628 629 # clear out children with given name, even if it's a vector 630 def clear_child(self, name): 631 if not self._children.has_key(name): 632 return 633 child = self._children[name] 634 if isinstance(child, SimObjVector): 635 for i in xrange(len(child)): 636 del self._children["s%d" % (name, i)] 637 del self._children[name] 638 639 def add_child(self, name, value): 640 self._children[name] = value 641 642 def _maybe_set_parent(self, parent, name): 643 if not self._parent: 644 self._parent = parent 645 self._name = name 646 parent.add_child(name, self) 647 648 def _set_child(self, attr, value): 649 # if RHS is a SimObject, it's an implicit child assignment 650 # clear out old child with this name, if any 651 self.clear_child(attr) 652 653 if isSimObject(value): 654 value._maybe_set_parent(self, attr) 655 elif isSimObjectSequence(value): 656 value = SimObjVector(value) 657 if len(value) == 1: 658 value[0]._maybe_set_parent(self, attr) 659 else: 660 for i,v in enumerate(value): 661 v._maybe_set_parent(self, "%s%d" % (attr, i)) 662 663 self._values[attr] = value 664 665 def path(self): 666 if not self._parent: 667 return 'root' 668 ppath = self._parent.path() 669 if ppath == 'root': 670 return self._name 671 return ppath + "." + self._name 672 673 def __str__(self): 674 return self.path() 675 676 def ini_str(self): 677 return self.path() 678 679 def find_any(self, ptype): 680 if isinstance(self, ptype): 681 return self, True 682 683 found_obj = None 684 for child in self._children.itervalues(): 685 if isinstance(child, ptype): 686 if found_obj != None and child != found_obj: 687 raise AttributeError, \ 688 'parent.any matched more than one: %s %s' % \ 689 (found_obj.path, child.path) 690 found_obj = child 691 # search param space 692 for pname,pdesc in self._params.iteritems(): 693 if issubclass(pdesc.ptype, ptype): 694 match_obj = self._values[pname] 695 if found_obj != None and found_obj != match_obj: 696 raise AttributeError, \ 697 'parent.any matched more than one: %s' % obj.path 698 found_obj = match_obj 699 return found_obj, found_obj != None 700 701 def unproxy(self, base): 702 return self 703 704 def unproxy_all(self): 705 for param in self._params.iterkeys(): 706 value = self._values.get(param) 707 if value != None and proxy.isproxy(value): 708 try: 709 value = value.unproxy(self) 710 except: 711 print "Error in unproxying param '%s' of %s" % \ 712 (param, self.path()) 713 raise 714 setattr(self, param, value) 715 716 # Unproxy ports in sorted order so that 'append' operations on 717 # vector ports are done in a deterministic fashion. 718 port_names = self._ports.keys() 719 port_names.sort() 720 for port_name in port_names: 721 port = self._port_refs.get(port_name) 722 if port != None: 723 port.unproxy(self) 724 725 # Unproxy children in sorted order for determinism also. 726 child_names = self._children.keys() 727 child_names.sort() 728 for child in child_names: 729 self._children[child].unproxy_all() 730 731 def print_ini(self, ini_file): 732 print >>ini_file, '[' + self.path() + ']' # .ini section header 733 734 instanceDict[self.path()] = self 735 736 if hasattr(self, 'type'): 737 print >>ini_file, 'type=%s' % self.type 738 739 child_names = self._children.keys() 740 child_names.sort() 741 if len(child_names): 742 print >>ini_file, 'children=%s' % ' '.join(child_names) 743 744 param_names = self._params.keys() 745 param_names.sort() 746 for param in param_names: 747 value = self._values.get(param) 748 if value != None: 749 print >>ini_file, '%s=%s' % (param, 750 self._values[param].ini_str()) 751 752 port_names = self._ports.keys() 753 port_names.sort() 754 for port_name in port_names: 755 port = self._port_refs.get(port_name, None) 756 if port != None: 757 print >>ini_file, '%s=%s' % (port_name, port.ini_str()) 758 759 print >>ini_file # blank line between objects 760 761 for child in child_names: 762 self._children[child].print_ini(ini_file) 763 764 def getCCParams(self): 765 if self._ccParams: 766 return self._ccParams 767 768 cc_params_struct = getattr(m5.objects.params, '%sParams' % self.type) 769 cc_params = cc_params_struct() 770 cc_params.pyobj = self 771 cc_params.name = str(self) 772 773 param_names = self._params.keys() 774 param_names.sort() 775 for param in param_names: 776 value = self._values.get(param) 777 if value is None: 778 continue 779 780 value = value.getValue() 781 if isinstance(self._params[param], VectorParamDesc): 782 assert isinstance(value, list) 783 vec = getattr(cc_params, param) 784 assert not len(vec) 785 for v in value: 786 vec.append(v) 787 else: 788 setattr(cc_params, param, value) 789 790 port_names = self._ports.keys() 791 port_names.sort() 792 for port_name in port_names: 793 port = self._port_refs.get(port_name, None) 794 if port != None: 795 setattr(cc_params, port_name, port) 796 self._ccParams = cc_params 797 return self._ccParams 798 799 # Get C++ object corresponding to this object, calling C++ if 800 # necessary to construct it. Does *not* recursively create 801 # children. 802 def getCCObject(self): 803 if not self._ccObject: 804 # Cycles in the configuration heirarchy are not supported. This 805 # will catch the resulting recursion and stop. 806 self._ccObject = -1 807 params = self.getCCParams() 808 self._ccObject = params.create() 809 elif self._ccObject == -1: 810 raise RuntimeError, "%s: Cycle found in configuration heirarchy." \ 811 % self.path() 812 return self._ccObject 813 814 # Call C++ to create C++ object corresponding to this object and 815 # (recursively) all its children 816 def createCCObject(self): 817 self.getCCParams() 818 self.getCCObject() # force creation 819 for child in self._children.itervalues(): 820 child.createCCObject() 821 822 def getValue(self): 823 return self.getCCObject() 824 825 # Create C++ port connections corresponding to the connections in 826 # _port_refs (& recursively for all children) 827 def connectPorts(self): 828 for portRef in self._port_refs.itervalues(): 829 portRef.ccConnect() 830 for child in self._children.itervalues(): 831 child.connectPorts() 832 833 def startDrain(self, drain_event, recursive): 834 count = 0 835 if isinstance(self, SimObject): 836 count += self._ccObject.drain(drain_event) 837 if recursive: 838 for child in self._children.itervalues(): 839 count += child.startDrain(drain_event, True) 840 return count 841 842 def resume(self): 843 if isinstance(self, SimObject): 844 self._ccObject.resume() 845 for child in self._children.itervalues(): 846 child.resume() 847 848 def getMemoryMode(self): 849 if not isinstance(self, m5.objects.System): 850 return None 851 852 return self._ccObject.getMemoryMode() 853 854 def changeTiming(self, mode): 855 if isinstance(self, m5.objects.System): 856 # i don't know if there's a better way to do this - calling 857 # setMemoryMode directly from self._ccObject results in calling 858 # SimObject::setMemoryMode, not the System::setMemoryMode 859 self._ccObject.setMemoryMode(mode) 860 for child in self._children.itervalues(): 861 child.changeTiming(mode) 862 863 def takeOverFrom(self, old_cpu): 864 self._ccObject.takeOverFrom(old_cpu._ccObject) 865 866 # generate output file for 'dot' to display as a pretty graph. 867 # this code is currently broken. 868 def outputDot(self, dot): 869 label = "{%s|" % self.path 870 if isSimObject(self.realtype): 871 label += '%s|' % self.type 872 873 if self.children: 874 # instantiate children in same order they were added for 875 # backward compatibility (else we can end up with cpu1 876 # before cpu0). 877 for c in self.children: 878 dot.add_edge(pydot.Edge(self.path,c.path, style="bold")) 879 880 simobjs = [] 881 for param in self.params: 882 try: 883 if param.value is None: 884 raise AttributeError, 'Parameter with no value' 885 886 value = param.value 887 string = param.string(value) 888 except Exception, e: 889 msg = 'exception in %s:%s\n%s' % (self.name, param.name, e) 890 e.args = (msg, ) 891 raise 892 893 if isSimObject(param.ptype) and string != "Null": 894 simobjs.append(string) 895 else: 896 label += '%s = %s\\n' % (param.name, string) 897 898 for so in simobjs: 899 label += "|<%s> %s" % (so, so) 900 dot.add_edge(pydot.Edge("%s:%s" % (self.path, so), so, 901 tailport="w")) 902 label += '}' 903 dot.add_node(pydot.Node(self.path,shape="Mrecord",label=label)) 904 905 # recursively dump out children 906 for c in self.children: 907 c.outputDot(dot) 908 909# Function to provide to C++ so it can look up instances based on paths 910def resolveSimObject(name): 911 obj = instanceDict[name] 912 return obj.getCCObject() 913 914# __all__ defines the list of symbols that get exported when 915# 'from config import *' is invoked. Try to keep this reasonably 916# short to avoid polluting other namespaces. 917__all__ = [ 'SimObject' ] 918