1 # Copyright (c) 2012 ARM Limited
4 # The license below extends only to copyright in the software and shall
5 # not be construed as granting a license to any other intellectual
6 # property including but not limited to intellectual property relating
7 # to a hardware implementation of the functionality of the software
8 # licensed hereunder. You may use the software subject to the license
9 # terms below provided that you ensure that this notice is replicated
10 # unmodified and in its entirety in all distributions of the software,
11 # modified or unmodified, in source code or in binary form.
13 # Copyright (c) 2004-2006 The Regents of The University of Michigan
14 # Copyright (c) 2010-20013 Advanced Micro Devices, Inc.
15 # Copyright (c) 2013 Mark D. Hill and David A. Wood
16 # All rights reserved.
18 # Redistribution and use in source and binary forms, with or without
19 # modification, are permitted provided that the following conditions are
20 # met: redistributions of source code must retain the above copyright
21 # notice, this list of conditions and the following disclaimer;
22 # redistributions in binary form must reproduce the above copyright
23 # notice, this list of conditions and the following disclaimer in the
24 # documentation and/or other materials provided with the distribution;
25 # neither the name of the copyright holders nor the names of its
26 # contributors may be used to endorse or promote products derived from
27 # this software without specific prior written permission.
29 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 # Authors: Steve Reinhardt
46 from types
import FunctionType
, MethodType
, ModuleType
51 # Have to import params up top since Param is referenced on initial
52 # load (when SimObject class references Param to create a class
53 # variable, the 'name' param)...
54 from m5
.params
import *
55 # There are a few things we need that aren't in params.__all__ since
56 # normal users don't need them
57 from m5
.params
import ParamDesc
, VectorParamDesc
, \
58 isNullPointer
, SimObjectVector
, Port
60 from m5
.proxy
import *
61 from m5
.proxy
import isproxy
63 #####################################################################
65 # M5 Python Configuration Utility
67 # The basic idea is to write simple Python programs that build Python
68 # objects corresponding to M5 SimObjects for the desired simulation
69 # configuration. For now, the Python emits a .ini file that can be
70 # parsed by M5. In the future, some tighter integration between M5
71 # and the Python interpreter may allow bypassing the .ini file.
73 # Each SimObject class in M5 is represented by a Python class with the
74 # same name. The Python inheritance tree mirrors the M5 C++ tree
75 # (e.g., SimpleCPU derives from BaseCPU in both cases, and all
76 # SimObjects inherit from a single SimObject base class). To specify
77 # an instance of an M5 SimObject in a configuration, the user simply
78 # instantiates the corresponding Python object. The parameters for
79 # that SimObject are given by assigning to attributes of the Python
80 # object, either using keyword assignment in the constructor or in
81 # separate assignment statements. For example:
83 # cache = BaseCache(size='64KB')
84 # cache.hit_latency = 3
87 # The magic lies in the mapping of the Python attributes for SimObject
88 # classes to the actual SimObject parameter specifications. This
89 # allows parameter validity checking in the Python code. Continuing
90 # the example above, the statements "cache.blurfl=3" or
91 # "cache.assoc='hello'" would both result in runtime errors in Python,
92 # since the BaseCache object has no 'blurfl' parameter and the 'assoc'
93 # parameter requires an integer, respectively. This magic is done
94 # primarily by overriding the special __setattr__ method that controls
95 # assignment to object attributes.
97 # Once a set of Python objects have been instantiated in a hierarchy,
98 # calling 'instantiate(obj)' (where obj is the root of the hierarchy)
99 # will generate a .ini file.
101 #####################################################################
103 # list of all SimObject classes
106 # dict to look up SimObjects based on path
109 # Did any of the SimObjects lack a header file?
112 def public_value(key
, value
):
113 return key
.startswith('_') or \
114 isinstance(value
, (FunctionType
, MethodType
, ModuleType
,
117 # The metaclass for SimObject. This class controls how new classes
118 # that derive from SimObject are instantiated, and provides inherited
119 # class behavior (just like a class controls how instances of that
120 # class are instantiated, and provides inherited instance behavior).
121 class MetaSimObject(type):
122 # Attributes that can be set only at initialization time
123 init_keywords
= { 'abstract' : bool,
129 # Attributes that can be set any time
130 keywords
= { 'check' : FunctionType
}
132 # __new__ is called before __init__, and is where the statements
133 # in the body of the class definition get loaded into the class's
134 # __dict__. We intercept this to filter out parameter & port assignments
135 # and only allow "private" attributes to be passed to the base
136 # __new__ (starting with underscore).
137 def __new__(mcls
, name
, bases
, dict):
138 assert name
not in allClasses
, "SimObject %s already present" % name
140 # Copy "private" attributes, functions, and classes to the
141 # official dict. Everything else goes in _init_dict to be
142 # filtered in __init__.
145 for key
,val
in dict.items():
146 if public_value(key
, val
):
149 # must be a param/port setting
150 value_dict
[key
] = val
151 if 'abstract' not in value_dict
:
152 value_dict
['abstract'] = False
153 if 'cxx_bases' not in value_dict
:
154 value_dict
['cxx_bases'] = []
155 cls_dict
['_value_dict'] = value_dict
156 cls
= super(MetaSimObject
, mcls
).__new
__(mcls
, name
, bases
, cls_dict
)
157 if 'type' in value_dict
:
158 allClasses
[name
] = cls
161 # subclass initialization
162 def __init__(cls
, name
, bases
, dict):
163 # calls type.__init__()... I think that's a no-op, but leave
164 # it here just in case it's not.
165 super(MetaSimObject
, cls
).__init
__(name
, bases
, dict)
167 # initialize required attributes
169 # class-only attributes
170 cls
._params
= multidict() # param descriptions
171 cls
._ports
= multidict() # port descriptions
173 # class or instance attributes
174 cls
._values
= multidict() # param values
175 cls
._children
= multidict() # SimObject children
176 cls
._port
_refs
= multidict() # port ref objects
177 cls
._instantiated
= False # really instantiated, cloned, or subclassed
179 # We don't support multiple inheritance of sim objects. If you want
180 # to, you must fix multidict to deal with it properly. Non sim-objects
184 if isinstance(c
, MetaSimObject
):
187 raise TypeError, "SimObjects do not support multiple inheritance"
191 # Set up general inheritance via multidicts. A subclass will
192 # inherit all its settings from the base class. The only time
193 # the following is not true is when we define the SimObject
194 # class itself (in which case the multidicts have no parent).
195 if isinstance(base
, MetaSimObject
):
197 cls
._params
.parent
= base
._params
198 cls
._ports
.parent
= base
._ports
199 cls
._values
.parent
= base
._values
200 cls
._children
.parent
= base
._children
201 cls
._port
_refs
.parent
= base
._port
_refs
202 # mark base as having been subclassed
203 base
._instantiated
= True
207 # default keyword values
208 if 'type' in cls
._value
_dict
:
209 if 'cxx_class' not in cls
._value
_dict
:
210 cls
._value
_dict
['cxx_class'] = cls
._value
_dict
['type']
212 cls
._value
_dict
['cxx_type'] = '%s *' % cls
._value
_dict
['cxx_class']
214 if 'cxx_header' not in cls
._value
_dict
:
217 warn("No header file specified for SimObject: %s", name
)
219 # Export methods are automatically inherited via C++, so we
220 # don't want the method declarations to get inherited on the
221 # python side (and thus end up getting repeated in the wrapped
222 # versions of derived classes). The code below basicallly
223 # suppresses inheritance by substituting in the base (null)
224 # versions of these methods unless a different version is
225 # explicitly supplied.
226 for method_name
in ('export_methods', 'export_method_cxx_predecls',
227 'export_method_swig_predecls'):
228 if method_name
not in cls
.__dict
__:
229 base_method
= getattr(MetaSimObject
, method_name
)
230 m
= MethodType(base_method
, cls
, MetaSimObject
)
231 setattr(cls
, method_name
, m
)
233 # Now process the _value_dict items. They could be defining
234 # new (or overriding existing) parameters or ports, setting
235 # class keywords (e.g., 'abstract'), or setting parameter
236 # values or port bindings. The first 3 can only be set when
237 # the class is defined, so we handle them here. The others
238 # can be set later too, so just emulate that by calling
240 for key
,val
in cls
._value
_dict
.items():
242 if isinstance(val
, ParamDesc
):
243 cls
._new
_param
(key
, val
)
246 elif isinstance(val
, Port
):
247 cls
._new
_port
(key
, val
)
249 # init-time-only keywords
250 elif cls
.init_keywords
.has_key(key
):
251 cls
._set
_keyword
(key
, val
, cls
.init_keywords
[key
])
253 # default: use normal path (ends up in __setattr__)
255 setattr(cls
, key
, val
)
257 def _set_keyword(cls
, keyword
, val
, kwtype
):
258 if not isinstance(val
, kwtype
):
259 raise TypeError, 'keyword %s has bad type %s (expecting %s)' % \
260 (keyword
, type(val
), kwtype
)
261 if isinstance(val
, FunctionType
):
262 val
= classmethod(val
)
263 type.__setattr
__(cls
, keyword
, val
)
265 def _new_param(cls
, name
, pdesc
):
266 # each param desc should be uniquely assigned to one variable
267 assert(not hasattr(pdesc
, 'name'))
269 cls
._params
[name
] = pdesc
270 if hasattr(pdesc
, 'default'):
271 cls
._set
_param
(name
, pdesc
.default
, pdesc
)
273 def _set_param(cls
, name
, value
, param
):
274 assert(param
.name
== name
)
276 value
= param
.convert(value
)
278 msg
= "%s\nError setting param %s.%s to %s\n" % \
279 (e
, cls
.__name
__, name
, value
)
282 cls
._values
[name
] = value
283 # if param value is a SimObject, make it a child too, so that
284 # it gets cloned properly when the class is instantiated
285 if isSimObjectOrVector(value
) and not value
.has_parent():
286 cls
._add
_cls
_child
(name
, value
)
288 def _add_cls_child(cls
, name
, child
):
289 # It's a little funky to have a class as a parent, but these
290 # objects should never be instantiated (only cloned, which
291 # clears the parent pointer), and this makes it clear that the
292 # object is not an orphan and can provide better error
294 child
.set_parent(cls
, name
)
295 cls
._children
[name
] = child
297 def _new_port(cls
, name
, port
):
298 # each port should be uniquely assigned to one variable
299 assert(not hasattr(port
, 'name'))
301 cls
._ports
[name
] = port
303 # same as _get_port_ref, effectively, but for classes
304 def _cls_get_port_ref(cls
, attr
):
305 # Return reference that can be assigned to another port
306 # via __setattr__. There is only ever one reference
307 # object per port, but we create them lazily here.
308 ref
= cls
._port
_refs
.get(attr
)
310 ref
= cls
._ports
[attr
].makeRef(cls
)
311 cls
._port
_refs
[attr
] = ref
314 # Set attribute (called on foo.attr = value when foo is an
315 # instance of class cls).
316 def __setattr__(cls
, attr
, value
):
317 # normal processing for private attributes
318 if public_value(attr
, value
):
319 type.__setattr
__(cls
, attr
, value
)
322 if cls
.keywords
.has_key(attr
):
323 cls
._set
_keyword
(attr
, value
, cls
.keywords
[attr
])
326 if cls
._ports
.has_key(attr
):
327 cls
._cls
_get
_port
_ref
(attr
).connect(value
)
330 if isSimObjectOrSequence(value
) and cls
._instantiated
:
331 raise RuntimeError, \
332 "cannot set SimObject parameter '%s' after\n" \
333 " class %s has been instantiated or subclassed" \
334 % (attr
, cls
.__name
__)
337 param
= cls
._params
.get(attr
)
339 cls
._set
_param
(attr
, value
, param
)
342 if isSimObjectOrSequence(value
):
343 # If RHS is a SimObject, it's an implicit child assignment.
344 cls
._add
_cls
_child
(attr
, coerceSimObjectOrVector(value
))
347 # no valid assignment... raise exception
348 raise AttributeError, \
349 "Class %s has no parameter \'%s\'" % (cls
.__name
__, attr
)
351 def __getattr__(cls
, attr
):
352 if attr
== 'cxx_class_path':
353 return cls
.cxx_class
.split('::')
355 if attr
== 'cxx_class_name':
356 return cls
.cxx_class_path
[-1]
358 if attr
== 'cxx_namespaces':
359 return cls
.cxx_class_path
[:-1]
361 if cls
._values
.has_key(attr
):
362 return cls
._values
[attr
]
364 if cls
._children
.has_key(attr
):
365 return cls
._children
[attr
]
367 raise AttributeError, \
368 "object '%s' has no attribute '%s'" % (cls
.__name
__, attr
)
373 # See ParamValue.cxx_predecls for description.
374 def cxx_predecls(cls
, code
):
375 code('#include "params/$cls.hh"')
377 # See ParamValue.swig_predecls for description.
378 def swig_predecls(cls
, code
):
379 code('%import "python/m5/internal/param_$cls.i"')
381 # Hook for exporting additional C++ methods to Python via SWIG.
382 # Default is none, override using @classmethod in class definition.
383 def export_methods(cls
, code
):
386 # Generate the code needed as a prerequisite for the C++ methods
387 # exported via export_methods() to be compiled in the _wrap.cc
388 # file. Typically generates one or more #include statements. If
389 # any methods are exported, typically at least the C++ header
390 # declaring the relevant SimObject class must be included.
391 def export_method_cxx_predecls(cls
, code
):
394 # Generate the code needed as a prerequisite for the C++ methods
395 # exported via export_methods() to be processed by SWIG.
396 # Typically generates one or more %include or %import statements.
397 # If any methods are exported, typically at least the C++ header
398 # declaring the relevant SimObject class must be included.
399 def export_method_swig_predecls(cls
, code
):
402 # Generate the declaration for this object for wrapping with SWIG.
403 # Generates code that goes into a SWIG .i file. Called from
405 def swig_decl(cls
, code
):
406 class_path
= cls
.cxx_class
.split('::')
407 classname
= class_path
[-1]
408 namespaces
= class_path
[:-1]
410 # The 'local' attribute restricts us to the params declared in
411 # the object itself, not including inherited params (which
412 # will also be inherited from the base class's param struct
414 params
= cls
._params
.local
.values()
415 ports
= cls
._ports
.local
417 code('%module(package="m5.internal") param_$cls')
420 code('#include "sim/sim_object.hh"')
421 code('#include "params/$cls.hh"')
423 param
.cxx_predecls(code
)
424 code('#include "${{cls.cxx_header}}"')
425 cls
.export_method_cxx_predecls(code
)
428 * This is a workaround for bug in swig. Prior to gcc 4.6.1 the STL
429 * headers like vector, string, etc. used to automatically pull in
430 * the cstddef header but starting with gcc 4.6.1 they no longer do.
431 * This leads to swig generated a file that does not compile so we
432 * explicitly include cstddef. Additionally, including version 2.0.4,
433 * swig uses ptrdiff_t without the std:: namespace prefix which is
434 * required with gcc 4.6.1. We explicitly provide access to it.
437 using std::ptrdiff_t;
443 param
.swig_predecls(code
)
444 cls
.export_method_swig_predecls(code
)
448 code('%import "python/m5/internal/param_${{cls._base}}.i"')
451 for ns
in namespaces
:
452 code('namespace $ns {')
455 code('// avoid name conflicts')
456 sep_string
= '_COLONS_'
457 flat_name
= sep_string
.join(class_path
)
458 code('%rename($flat_name) $classname;')
461 code('// stop swig from creating/wrapping default ctor/dtor')
462 code('%nodefault $classname;')
463 code('class $classname')
465 bases
= [ cls
._base
.cxx_class
] + cls
.cxx_bases
467 bases
= cls
.cxx_bases
471 code(' : public ${{base}}')
474 code(' , public ${{base}}')
478 cls
.export_methods(code
)
481 for ns
in reversed(namespaces
):
482 code('} // namespace $ns')
485 code('%include "params/$cls.hh"')
488 # Generate the C++ declaration (.hh file) for this SimObject's
489 # param struct. Called from src/SConscript.
490 def cxx_param_decl(cls
, code
):
491 # The 'local' attribute restricts us to the params declared in
492 # the object itself, not including inherited params (which
493 # will also be inherited from the base class's param struct
495 params
= cls
._params
.local
.values()
496 ports
= cls
._ports
.local
498 ptypes
= [p
.ptype
for p
in params
]
500 print cls
, p
, p
.ptype_str
504 class_path
= cls
._value
_dict
['cxx_class'].split('::')
507 #ifndef __PARAMS__${cls}__
508 #define __PARAMS__${cls}__
512 # A forward class declaration is sufficient since we are just
513 # declaring a pointer.
514 for ns
in class_path
[:-1]:
515 code('namespace $ns {')
516 code('class $0;', class_path
[-1])
517 for ns
in reversed(class_path
[:-1]):
518 code('} // namespace $ns')
521 # The base SimObject has a couple of params that get
522 # automatically set from Python without being declared through
523 # the normal Param mechanism; we slip them in here (needed
524 # predecls now, actual declarations below)
534 param
.cxx_predecls(code
)
535 for port
in ports
.itervalues():
536 port
.cxx_predecls(code
)
540 code('#include "params/${{cls._base.type}}.hh"')
544 if issubclass(ptype
, Enum
):
545 code('#include "enums/${{ptype.__name__}}.hh"')
548 # now generate the actual param struct
549 code("struct ${cls}Params")
551 code(" : public ${{cls._base.type}}Params")
553 if not hasattr(cls
, 'abstract') or not cls
.abstract
:
554 if 'type' in cls
.__dict
__:
555 code(" ${{cls.cxx_type}} create();")
561 virtual ~SimObjectParams() {}
568 for port
in ports
.itervalues():
575 code('#endif // __PARAMS__${cls}__')
579 # This *temporary* definition is required to support calls from the
580 # SimObject class definition to the MetaSimObject methods (in
581 # particular _set_param, which gets called for parameters with default
582 # values defined on the SimObject class itself). It will get
583 # overridden by the permanent definition (which requires that
584 # SimObject be defined) lower in this file.
585 def isSimObjectOrVector(value
):
588 # The SimObject class is the root of the special hierarchy. Most of
589 # the code in this class deals with the configuration hierarchy itself
590 # (parent/child node relationships).
591 class SimObject(object):
592 # Specify metaclass. Any class inheriting from SimObject will
593 # get this metaclass.
594 __metaclass__
= MetaSimObject
598 cxx_header
= "sim/sim_object.hh"
599 cxx_bases
= [ "Drainable", "Serializable" ]
600 eventq_index
= Param
.UInt32(Parent
.eventq_index
, "Event Queue Index")
603 def export_method_swig_predecls(cls
, code
):
605 %include <std_string.i>
607 %import "python/swig/drain.i"
608 %import "python/swig/serialize.i"
612 def export_methods(cls
, code
):
615 void loadState(Checkpoint *cp);
622 # Initialize new instance. For objects with SimObject-valued
623 # children, we need to recursively clone the classes represented
624 # by those param values as well in a consistent "deep copy"-style
625 # fashion. That is, we want to make sure that each instance is
626 # cloned only once, and that if there are multiple references to
627 # the same original object, we end up with the corresponding
628 # cloned references all pointing to the same cloned instance.
629 def __init__(self
, **kwargs
):
630 ancestor
= kwargs
.get('_ancestor')
631 memo_dict
= kwargs
.get('_memo')
632 if memo_dict
is None:
633 # prepare to memoize any recursively instantiated objects
636 # memoize me now to avoid problems with recursive calls
637 memo_dict
[ancestor
] = self
640 ancestor
= self
.__class
__
641 ancestor
._instantiated
= True
643 # initialize required attributes
646 self
._ccObject
= None # pointer to C++ object
647 self
._ccParams
= None
648 self
._instantiated
= False # really "cloned"
650 # Clone children specified at class level. No need for a
651 # multidict here since we will be cloning everything.
652 # Do children before parameter values so that children that
653 # are also param values get cloned properly.
655 for key
,val
in ancestor
._children
.iteritems():
656 self
.add_child(key
, val(_memo
=memo_dict
))
658 # Inherit parameter values from class using multidict so
659 # individual value settings can be overridden but we still
660 # inherit late changes to non-overridden class values.
661 self
._values
= multidict(ancestor
._values
)
662 # clone SimObject-valued parameters
663 for key
,val
in ancestor
._values
.iteritems():
664 val
= tryAsSimObjectOrVector(val
)
666 self
._values
[key
] = val(_memo
=memo_dict
)
668 # clone port references. no need to use a multidict here
669 # since we will be creating new references for all ports.
671 for key
,val
in ancestor
._port
_refs
.iteritems():
672 self
._port
_refs
[key
] = val
.clone(self
, memo_dict
)
673 # apply attribute assignments from keyword args, if any
674 for key
,val
in kwargs
.iteritems():
675 setattr(self
, key
, val
)
677 # "Clone" the current instance by creating another instance of
678 # this instance's class, but that inherits its parameter values
679 # and port mappings from the current instance. If we're in a
680 # "deep copy" recursive clone, check the _memo dict to see if
681 # we've already cloned this instance.
682 def __call__(self
, **kwargs
):
683 memo_dict
= kwargs
.get('_memo')
684 if memo_dict
is None:
685 # no memo_dict: must be top-level clone operation.
686 # this is only allowed at the root of a hierarchy
688 raise RuntimeError, "attempt to clone object %s " \
689 "not at the root of a tree (parent = %s)" \
690 % (self
, self
._parent
)
691 # create a new dict and use that.
693 kwargs
['_memo'] = memo_dict
694 elif memo_dict
.has_key(self
):
695 # clone already done & memoized
696 return memo_dict
[self
]
697 return self
.__class
__(_ancestor
= self
, **kwargs
)
699 def _get_port_ref(self
, attr
):
700 # Return reference that can be assigned to another port
701 # via __setattr__. There is only ever one reference
702 # object per port, but we create them lazily here.
703 ref
= self
._port
_refs
.get(attr
)
705 ref
= self
._ports
[attr
].makeRef(self
)
706 self
._port
_refs
[attr
] = ref
709 def __getattr__(self
, attr
):
710 if self
._ports
.has_key(attr
):
711 return self
._get
_port
_ref
(attr
)
713 if self
._values
.has_key(attr
):
714 return self
._values
[attr
]
716 if self
._children
.has_key(attr
):
717 return self
._children
[attr
]
719 # If the attribute exists on the C++ object, transparently
720 # forward the reference there. This is typically used for
721 # SWIG-wrapped methods such as init(), regStats(),
722 # resetStats(), startup(), drain(), and
724 if self
._ccObject
and hasattr(self
._ccObject
, attr
):
725 return getattr(self
._ccObject
, attr
)
727 raise AttributeError, "object '%s' has no attribute '%s'" \
728 % (self
.__class
__.__name
__, attr
)
730 # Set attribute (called on foo.attr = value when foo is an
731 # instance of class cls).
732 def __setattr__(self
, attr
, value
):
733 # normal processing for private attributes
734 if attr
.startswith('_'):
735 object.__setattr
__(self
, attr
, value
)
738 if self
._ports
.has_key(attr
):
739 # set up port connection
740 self
._get
_port
_ref
(attr
).connect(value
)
743 if isSimObjectOrSequence(value
) and self
._instantiated
:
744 raise RuntimeError, \
745 "cannot set SimObject parameter '%s' after\n" \
746 " instance been cloned %s" % (attr
, `self`
)
748 param
= self
._params
.get(attr
)
751 value
= param
.convert(value
)
753 msg
= "%s\nError setting param %s.%s to %s\n" % \
754 (e
, self
.__class
__.__name
__, attr
, value
)
757 self
._values
[attr
] = value
758 # implicitly parent unparented objects assigned as params
759 if isSimObjectOrVector(value
) and not value
.has_parent():
760 self
.add_child(attr
, value
)
763 # if RHS is a SimObject, it's an implicit child assignment
764 if isSimObjectOrSequence(value
):
765 self
.add_child(attr
, value
)
768 # no valid assignment... raise exception
769 raise AttributeError, "Class %s has no parameter %s" \
770 % (self
.__class
__.__name
__, attr
)
773 # this hack allows tacking a '[0]' onto parameters that may or may
774 # not be vectors, and always getting the first element (e.g. cpus)
775 def __getitem__(self
, key
):
778 raise TypeError, "Non-zero index '%s' to SimObject" % key
780 # Also implemented by SimObjectVector
781 def clear_parent(self
, old_parent
):
782 assert self
._parent
is old_parent
785 # Also implemented by SimObjectVector
786 def set_parent(self
, parent
, name
):
787 self
._parent
= parent
790 # Return parent object of this SimObject, not implemented by SimObjectVector
791 # because the elements in a SimObjectVector may not share the same parent
792 def get_parent(self
):
795 # Also implemented by SimObjectVector
799 # Also implemented by SimObjectVector
800 def has_parent(self
):
801 return self
._parent
is not None
803 # clear out child with given name. This code is not likely to be exercised.
804 # See comment in add_child.
805 def clear_child(self
, name
):
806 child
= self
._children
[name
]
807 child
.clear_parent(self
)
808 del self
._children
[name
]
810 # Add a new child to this object.
811 def add_child(self
, name
, child
):
812 child
= coerceSimObjectOrVector(child
)
813 if child
.has_parent():
814 warn("add_child('%s'): child '%s' already has parent", name
,
816 if self
._children
.has_key(name
):
817 # This code path had an undiscovered bug that would make it fail
818 # at runtime. It had been here for a long time and was only
819 # exposed by a buggy script. Changes here will probably not be
820 # exercised without specialized testing.
821 self
.clear_child(name
)
822 child
.set_parent(self
, name
)
823 self
._children
[name
] = child
825 # Take SimObject-valued parameters that haven't been explicitly
826 # assigned as children and make them children of the object that
827 # they were assigned to as a parameter value. This guarantees
828 # that when we instantiate all the parameter objects we're still
829 # inside the configuration hierarchy.
830 def adoptOrphanParams(self
):
831 for key
,val
in self
._values
.iteritems():
832 if not isSimObjectVector(val
) and isSimObjectSequence(val
):
833 # need to convert raw SimObject sequences to
834 # SimObjectVector class so we can call has_parent()
835 val
= SimObjectVector(val
)
836 self
._values
[key
] = val
837 if isSimObjectOrVector(val
) and not val
.has_parent():
838 warn("%s adopting orphan SimObject param '%s'", self
, key
)
839 self
.add_child(key
, val
)
843 return '<orphan %s>' % self
.__class
__
844 ppath
= self
._parent
.path()
847 return ppath
+ "." + self
._name
855 def find_any(self
, ptype
):
856 if isinstance(self
, ptype
):
860 for child
in self
._children
.itervalues():
861 if isinstance(child
, ptype
):
862 if found_obj
!= None and child
!= found_obj
:
863 raise AttributeError, \
864 'parent.any matched more than one: %s %s' % \
865 (found_obj
.path
, child
.path
)
868 for pname
,pdesc
in self
._params
.iteritems():
869 if issubclass(pdesc
.ptype
, ptype
):
870 match_obj
= self
._values
[pname
]
871 if found_obj
!= None and found_obj
!= match_obj
:
872 raise AttributeError, \
873 'parent.any matched more than one: %s and %s' % (found_obj
.path
, match_obj
.path
)
874 found_obj
= match_obj
875 return found_obj
, found_obj
!= None
877 def find_all(self
, ptype
):
880 for child
in self
._children
.itervalues():
881 # a child could be a list, so ensure we visit each item
882 if isinstance(child
, list):
887 for child
in children
:
888 if isinstance(child
, ptype
) and not isproxy(child
) and \
889 not isNullPointer(child
):
891 if isSimObject(child
):
892 # also add results from the child itself
893 child_all
, done
= child
.find_all(ptype
)
894 all
.update(dict(zip(child_all
, [done
] * len(child_all
))))
896 for pname
,pdesc
in self
._params
.iteritems():
897 if issubclass(pdesc
.ptype
, ptype
):
898 match_obj
= self
._values
[pname
]
899 if not isproxy(match_obj
) and not isNullPointer(match_obj
):
900 all
[match_obj
] = True
901 return all
.keys(), True
903 def unproxy(self
, base
):
906 def unproxyParams(self
):
907 for param
in self
._params
.iterkeys():
908 value
= self
._values
.get(param
)
909 if value
!= None and isproxy(value
):
911 value
= value
.unproxy(self
)
913 print "Error in unproxying param '%s' of %s" % \
916 setattr(self
, param
, value
)
918 # Unproxy ports in sorted order so that 'append' operations on
919 # vector ports are done in a deterministic fashion.
920 port_names
= self
._ports
.keys()
922 for port_name
in port_names
:
923 port
= self
._port
_refs
.get(port_name
)
927 def print_ini(self
, ini_file
):
928 print >>ini_file
, '[' + self
.path() + ']' # .ini section header
930 instanceDict
[self
.path()] = self
932 if hasattr(self
, 'type'):
933 print >>ini_file
, 'type=%s' % self
.type
935 if len(self
._children
.keys()):
936 print >>ini_file
, 'children=%s' % \
937 ' '.join(self
._children
[n
].get_name() \
938 for n
in sorted(self
._children
.keys()))
940 for param
in sorted(self
._params
.keys()):
941 value
= self
._values
.get(param
)
943 print >>ini_file
, '%s=%s' % (param
,
944 self
._values
[param
].ini_str())
946 for port_name
in sorted(self
._ports
.keys()):
947 port
= self
._port
_refs
.get(port_name
, None)
949 print >>ini_file
, '%s=%s' % (port_name
, port
.ini_str())
951 print >>ini_file
# blank line between objects
953 # generate a tree of dictionaries expressing all the parameters in the
954 # instantiated system for use by scripts that want to do power, thermal
955 # visualization, and other similar tasks
956 def get_config_as_dict(self
):
958 if hasattr(self
, 'type'):
960 if hasattr(self
, 'cxx_class'):
961 d
.cxx_class
= self
.cxx_class
962 # Add the name and path of this object to be able to link to
964 d
.name
= self
.get_name()
967 for param
in sorted(self
._params
.keys()):
968 value
= self
._values
.get(param
)
971 # Use native type for those supported by JSON and
972 # strings for everything else. skipkeys=True seems
973 # to not work as well as one would hope
974 if type(self
._values
[param
].value
) in \
975 [str, unicode, int, long, float, bool, None]:
976 d
[param
] = self
._values
[param
].value
978 d
[param
] = str(self
._values
[param
])
980 except AttributeError:
983 for n
in sorted(self
._children
.keys()):
984 child
= self
._children
[n
]
985 # Use the name of the attribute (and not get_name()) as
986 # the key in the JSON dictionary to capture the hierarchy
987 # in the Python code that assembled this system
988 d
[n
] = child
.get_config_as_dict()
990 for port_name
in sorted(self
._ports
.keys()):
991 port
= self
._port
_refs
.get(port_name
, None)
993 # Represent each port with a dictionary containing the
994 # prominent attributes
995 d
[port_name
] = port
.get_config_as_dict()
999 def getCCParams(self
):
1001 return self
._ccParams
1003 cc_params_struct
= getattr(m5
.internal
.params
, '%sParams' % self
.type)
1004 cc_params
= cc_params_struct()
1005 cc_params
.pyobj
= self
1006 cc_params
.name
= str(self
)
1008 param_names
= self
._params
.keys()
1010 for param
in param_names
:
1011 value
= self
._values
.get(param
)
1013 fatal("%s.%s without default or user set value",
1016 value
= value
.getValue()
1017 if isinstance(self
._params
[param
], VectorParamDesc
):
1018 assert isinstance(value
, list)
1019 vec
= getattr(cc_params
, param
)
1024 setattr(cc_params
, param
, value
)
1026 port_names
= self
._ports
.keys()
1028 for port_name
in port_names
:
1029 port
= self
._port
_refs
.get(port_name
, None)
1031 port_count
= len(port
)
1034 setattr(cc_params
, 'port_' + port_name
+ '_connection_count',
1036 self
._ccParams
= cc_params
1037 return self
._ccParams
1039 # Get C++ object corresponding to this object, calling C++ if
1040 # necessary to construct it. Does *not* recursively create
1042 def getCCObject(self
):
1043 if not self
._ccObject
:
1044 # Make sure this object is in the configuration hierarchy
1045 if not self
._parent
and not isRoot(self
):
1046 raise RuntimeError, "Attempt to instantiate orphan node"
1047 # Cycles in the configuration hierarchy are not supported. This
1048 # will catch the resulting recursion and stop.
1050 params
= self
.getCCParams()
1051 self
._ccObject
= params
.create()
1052 elif self
._ccObject
== -1:
1053 raise RuntimeError, "%s: Cycle found in configuration hierarchy." \
1055 return self
._ccObject
1057 def descendants(self
):
1059 for child
in self
._children
.itervalues():
1060 for obj
in child
.descendants():
1063 # Call C++ to create C++ object corresponding to this object
1064 def createCCObject(self
):
1066 self
.getCCObject() # force creation
1069 return self
.getCCObject()
1071 # Create C++ port connections corresponding to the connections in
1073 def connectPorts(self
):
1074 for portRef
in self
._port
_refs
.itervalues():
1077 # Function to provide to C++ so it can look up instances based on paths
1078 def resolveSimObject(name
):
1079 obj
= instanceDict
[name
]
1080 return obj
.getCCObject()
1082 def isSimObject(value
):
1083 return isinstance(value
, SimObject
)
1085 def isSimObjectClass(value
):
1086 return issubclass(value
, SimObject
)
1088 def isSimObjectVector(value
):
1089 return isinstance(value
, SimObjectVector
)
1091 def isSimObjectSequence(value
):
1092 if not isinstance(value
, (list, tuple)) or len(value
) == 0:
1096 if not isNullPointer(val
) and not isSimObject(val
):
1101 def isSimObjectOrSequence(value
):
1102 return isSimObject(value
) or isSimObjectSequence(value
)
1105 from m5
.objects
import Root
1106 return obj
and obj
is Root
.getInstance()
1108 def isSimObjectOrVector(value
):
1109 return isSimObject(value
) or isSimObjectVector(value
)
1111 def tryAsSimObjectOrVector(value
):
1112 if isSimObjectOrVector(value
):
1114 if isSimObjectSequence(value
):
1115 return SimObjectVector(value
)
1118 def coerceSimObjectOrVector(value
):
1119 value
= tryAsSimObjectOrVector(value
)
1121 raise TypeError, "SimObject or SimObjectVector expected"
1124 baseClasses
= allClasses
.copy()
1125 baseInstances
= instanceDict
.copy()
1128 global allClasses
, instanceDict
, noCxxHeader
1130 allClasses
= baseClasses
.copy()
1131 instanceDict
= baseInstances
.copy()
1134 # __all__ defines the list of symbols that get exported when
1135 # 'from config import *' is invoked. Try to keep this reasonably
1136 # short to avoid polluting other namespaces.
1137 __all__
= [ 'SimObject' ]