From: Steve Reinhardt Date: Thu, 20 Oct 2011 20:08:49 +0000 (-0700) Subject: scons/swig: refactor some of the scons/SWIG code X-Git-Tag: stable_2012_02_02~38^2~5 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=45d14e02c4eef63c9d0db4e9155bf5fe93673c10;p=gem5.git scons/swig: refactor some of the scons/SWIG code - Move the random bits of SWIG code generation out of src/SConscript file and into methods on the objects being wrapped. - Cleaned up some variable naming and added some comments to make the process a little clearer. - Did a little generated file/module renaming: - vptype_Foo now Foo_vector - init_Foo is now Foo_init This makes it easier to see all the Foo-related files in a sorted directory listing. - Made cxx_predecls and swig_predecls normal SimObject classmethods. - Got rid of swig_objdecls hook, even though this breaks the System objects get/setMemoryMode method exports. Will be fixing this in a future changeset. --- diff --git a/src/SConscript b/src/SConscript index b4bfb61fd..7c6bcd846 100755 --- a/src/SConscript +++ b/src/SConscript @@ -449,7 +449,13 @@ sys.meta_path.remove(importer) sim_objects = m5.SimObject.allClasses all_enums = m5.params.allEnums -all_params = {} +# Find param types that need to be explicitly wrapped with swig. +# These will be recognized because the ParamDesc will have a +# swig_decl() method. Most param types are based on types that don't +# need this, either because they're based on native types (like Int) +# or because they're SimObjects (which get swigged independently). +# For now the only things handled here are VectorParam types. +params_to_swig = {} for name,obj in sorted(sim_objects.iteritems()): for param in obj._params.local.values(): # load the ptype attribute now because it depends on the @@ -461,8 +467,8 @@ for name,obj in sorted(sim_objects.iteritems()): if not hasattr(param, 'swig_decl'): continue pname = param.ptype_str - if pname not in all_params: - all_params[pname] = param + if pname not in params_to_swig: + params_to_swig[pname] = param ######################################################################## # @@ -523,24 +529,23 @@ PySource('m5', 'python/m5/info.py') # Create all of the SimObject param headers and enum headers # -def createSimObjectParam(target, source, env): +def createSimObjectParamStruct(target, source, env): assert len(target) == 1 and len(source) == 1 name = str(source[0].get_contents()) obj = sim_objects[name] code = code_formatter() - obj.cxx_decl(code) + obj.cxx_param_decl(code) code.write(target[0].abspath) -def createSwigParam(target, source, env): +def createParamSwigWrapper(target, source, env): assert len(target) == 1 and len(source) == 1 name = str(source[0].get_contents()) - param = all_params[name] + param = params_to_swig[name] code = code_formatter() - code('%module(package="m5.internal") $0_${name}', param.file_ext) param.swig_decl(code) code.write(target[0].abspath) @@ -554,7 +559,7 @@ def createEnumStrings(target, source, env): obj.cxx_def(code) code.write(target[0].abspath) -def createEnumParam(target, source, env): +def createEnumDecls(target, source, env): assert len(target) == 1 and len(source) == 1 name = str(source[0].get_contents()) @@ -564,25 +569,25 @@ def createEnumParam(target, source, env): obj.cxx_decl(code) code.write(target[0].abspath) -def createEnumSwig(target, source, env): +def createEnumSwigWrapper(target, source, env): assert len(target) == 1 and len(source) == 1 name = str(source[0].get_contents()) obj = all_enums[name] code = code_formatter() - code('''\ -%module(package="m5.internal") enum_$name + obj.swig_decl(code) + code.write(target[0].abspath) -%{ -#include "enums/$name.hh" -%} +def createSimObjectSwigWrapper(target, source, env): + name = source[0].get_contents() + obj = sim_objects[name] -%include "enums/$name.hh" -''') + code = code_formatter() + obj.swig_decl(code) code.write(target[0].abspath) -# Generate all of the SimObject param struct header files +# Generate all of the SimObject param C++ struct header files params_hh_files = [] for name,simobj in sorted(sim_objects.iteritems()): py_source = PySource.modules[simobj.__module__] @@ -591,16 +596,16 @@ for name,simobj in sorted(sim_objects.iteritems()): hh_file = File('params/%s.hh' % name) params_hh_files.append(hh_file) env.Command(hh_file, Value(name), - MakeAction(createSimObjectParam, Transform("SO PARAM"))) + MakeAction(createSimObjectParamStruct, Transform("SO PARAM"))) env.Depends(hh_file, depends + extra_deps) -# Generate any parameter header files needed +# Generate any needed param SWIG wrapper files params_i_files = [] -for name,param in all_params.iteritems(): - i_file = File('python/m5/internal/%s_%s.i' % (param.file_ext, name)) +for name,param in params_to_swig.iteritems(): + i_file = File('python/m5/internal/%s.i' % (param.swig_module_name())) params_i_files.append(i_file) env.Command(i_file, Value(name), - MakeAction(createSwigParam, Transform("SW PARAM"))) + MakeAction(createParamSwigWrapper, Transform("SW PARAM"))) env.Depends(i_file, depends) SwigSource('m5.internal', i_file) @@ -617,54 +622,22 @@ for name,enum in sorted(all_enums.iteritems()): hh_file = File('enums/%s.hh' % name) env.Command(hh_file, Value(name), - MakeAction(createEnumParam, Transform("EN PARAM"))) + MakeAction(createEnumDecls, Transform("ENUMDECL"))) env.Depends(hh_file, depends + extra_deps) i_file = File('python/m5/internal/enum_%s.i' % name) env.Command(i_file, Value(name), - MakeAction(createEnumSwig, Transform("ENUMSWIG"))) + MakeAction(createEnumSwigWrapper, Transform("ENUMSWIG"))) env.Depends(i_file, depends + extra_deps) SwigSource('m5.internal', i_file) -def buildParam(target, source, env): - name = source[0].get_contents() - obj = sim_objects[name] - class_path = obj.cxx_class.split('::') - classname = class_path[-1] - namespaces = class_path[:-1] - params = obj._params.local.values() - - code = code_formatter() - - code('%module(package="m5.internal") param_$name') - code() - code('%{') - code('#include "params/$obj.hh"') - for param in params: - param.cxx_predecls(code) - code('%}') - code() - - for param in params: - param.swig_predecls(code) - - code() - if obj._base: - code('%import "python/m5/internal/param_${{obj._base}}.i"') - code() - obj.swig_objdecls(code) - code() - - code('%include "params/$obj.hh"') - - code.write(target[0].abspath) - +# Generate SimObject SWIG wrapper files for name in sim_objects.iterkeys(): - params_file = File('python/m5/internal/param_%s.i' % name) - env.Command(params_file, Value(name), - MakeAction(buildParam, Transform("BLDPARAM"))) - env.Depends(params_file, depends) - SwigSource('m5.internal', params_file) + i_file = File('python/m5/internal/param_%s.i' % name) + env.Command(i_file, Value(name), + MakeAction(createSimObjectSwigWrapper, Transform("SO SWIG"))) + env.Depends(i_file, depends) + SwigSource('m5.internal', i_file) # Generate the main swig init file def makeEmbeddedSwigInit(target, source, env): @@ -687,7 +660,7 @@ for swig in SwigSource.all: MakeAction('$SWIG $SWIGFLAGS -outdir ${TARGETS[1].dir} ' '-o ${TARGETS[0]} $SOURCES', Transform("SWIG"))) cc_file = str(swig.tnode) - init_file = '%s/init_%s.cc' % (dirname(cc_file), basename(cc_file)) + init_file = '%s/%s_init.cc' % (dirname(cc_file), basename(cc_file)) env.Command(init_file, Value(swig.module), MakeAction(makeEmbeddedSwigInit, Transform("EMBED SW"))) Source(init_file, **swig.guards) diff --git a/src/python/m5/SimObject.py b/src/python/m5/SimObject.py index 9729fd30f..6d393273d 100644 --- a/src/python/m5/SimObject.py +++ b/src/python/m5/SimObject.py @@ -97,37 +97,6 @@ allClasses = {} # dict to look up SimObjects based on path instanceDict = {} -def default_cxx_predecls(cls, code): - code('#include "params/$cls.hh"') - -def default_swig_predecls(cls, code): - code('%import "python/m5/internal/param_$cls.i"') - -def default_swig_objdecls(cls, code): - class_path = cls.cxx_class.split('::') - classname = class_path[-1] - namespaces = class_path[:-1] - - for ns in namespaces: - code('namespace $ns {') - - if namespaces: - code('// avoid name conflicts') - sep_string = '_COLONS_' - flat_name = sep_string.join(class_path) - code('%rename($flat_name) $classname;') - - code() - code('// stop swig from creating/wrapping default ctor/dtor') - code('%nodefault $classname;') - code('class $classname') - if cls._base: - code(' : public ${{cls._base.cxx_class}}') - code('{};') - - for ns in reversed(namespaces): - code('} // namespace $ns') - def public_value(key, value): return key.startswith('_') or \ isinstance(value, (FunctionType, MethodType, ModuleType, @@ -142,9 +111,6 @@ class MetaSimObject(type): init_keywords = { 'abstract' : bool, 'cxx_class' : str, 'cxx_type' : str, - 'cxx_predecls' : MethodType, - 'swig_objdecls' : MethodType, - 'swig_predecls' : MethodType, 'type' : str } # Attributes that can be set any time keywords = { 'check' : FunctionType } @@ -223,18 +189,6 @@ class MetaSimObject(type): cls._value_dict['cxx_class'] = cls._value_dict['type'] cls._value_dict['cxx_type'] = '%s *' % cls._value_dict['cxx_class'] - - if 'cxx_predecls' not in cls.__dict__: - m = MethodType(default_cxx_predecls, cls, MetaSimObject) - setattr(cls, 'cxx_predecls', m) - - if 'swig_predecls' not in cls.__dict__: - m = MethodType(default_swig_predecls, cls, MetaSimObject) - setattr(cls, 'swig_predecls', m) - - if 'swig_objdecls' not in cls.__dict__: - m = MethodType(default_swig_objdecls, cls, MetaSimObject) - setattr(cls, 'swig_objdecls', m) # Now process the _value_dict items. They could be defining # new (or overriding existing) parameters or ports, setting @@ -378,8 +332,76 @@ class MetaSimObject(type): def __str__(cls): return cls.__name__ - def cxx_decl(cls, code): - # The 'dict' attribute restricts us to the params declared in + # See ParamValue.cxx_predecls for description. + def cxx_predecls(cls, code): + code('#include "params/$cls.hh"') + + # See ParamValue.swig_predecls for description. + def swig_predecls(cls, code): + code('%import "python/m5/internal/param_$cls.i"') + + # Generate the declaration for this object for wrapping with SWIG. + # Generates code that goes into a SWIG .i file. Called from + # src/SConscript. + def swig_decl(cls, code): + class_path = cls.cxx_class.split('::') + classname = class_path[-1] + namespaces = class_path[:-1] + + # The 'local' attribute restricts us to the params declared in + # the object itself, not including inherited params (which + # will also be inherited from the base class's param struct + # here). + params = cls._params.local.values() + + code('%module(package="m5.internal") param_$cls') + code() + code('%{') + code('#include "params/$cls.hh"') + for param in params: + param.cxx_predecls(code) + code('%}') + code() + + for param in params: + param.swig_predecls(code) + + code() + if cls._base: + code('%import "python/m5/internal/param_${{cls._base}}.i"') + code() + + for ns in namespaces: + code('namespace $ns {') + + if namespaces: + code('// avoid name conflicts') + sep_string = '_COLONS_' + flat_name = sep_string.join(class_path) + code('%rename($flat_name) $classname;') + + if cls == SimObject: + code('%include "python/swig/sim_object.i"') + else: + code() + code('// stop swig from creating/wrapping default ctor/dtor') + code('%nodefault $classname;') + code('class $classname') + if cls._base: + code(' : public ${{cls._base.cxx_class}}') + code('{};') + + for ns in reversed(namespaces): + code('} // namespace $ns') + + code() + code('%include "params/$cls.hh"') + + + # Generate the C++ declaration (.hh file) for this SimObject's + # param struct. Called from src/SConscript. + def cxx_param_decl(cls, code): + # The 'local' attribute restricts us to the params declared in # the object itself, not including inherited params (which # will also be inherited from the base class's param struct # here). @@ -421,65 +443,29 @@ class MetaSimObject(type): code('#include "enums/${{ptype.__name__}}.hh"') code() - cls.cxx_struct(code, cls._base, params) - - code() - code('#endif // __PARAMS__${cls}__') - return code - - def cxx_struct(cls, code, base, params): + # now generate the actual param struct if cls == SimObject: code('#include "sim/sim_object_params.hh"') - return - - # now generate the actual param struct - code("struct ${cls}Params") - if base: - code(" : public ${{base.type}}Params") - code("{") - if not hasattr(cls, 'abstract') or not cls.abstract: - if 'type' in cls.__dict__: - code(" ${{cls.cxx_type}} create();") - - code.indent() - for param in params: - param.cxx_decl(code) - code.dedent() - code('};') - - def swig_decl(cls, code): - code('''\ -%module $cls - -%{ -#include "params/$cls.hh" -%} - -''') - - # The 'dict' attribute restricts us to the params declared in - # the object itself, not including inherited params (which - # will also be inherited from the base class's param struct - # here). - params = cls._params.local.values() - ptypes = [p.ptype for p in params] + else: + code("struct ${cls}Params") + if cls._base: + code(" : public ${{cls._base.type}}Params") + code("{") + if not hasattr(cls, 'abstract') or not cls.abstract: + if 'type' in cls.__dict__: + code(" ${{cls.cxx_type}} create();") + + code.indent() + for param in params: + param.cxx_decl(code) + code.dedent() + code('};') - # get all predeclarations - for param in params: - param.swig_predecls(code) code() + code('#endif // __PARAMS__${cls}__') + return code - if cls._base: - code('%import "python/m5/internal/param_${{cls._base.type}}.i"') - code() - for ptype in ptypes: - if issubclass(ptype, Enum): - code('%import "enums/${{ptype.__name__}}.hh"') - code() - - code('%import "params/${cls}_type.hh"') - code('%include "params/${cls}.hh"') # The SimObject class is the root of the special hierarchy. Most of # the code in this class deals with the configuration hierarchy itself @@ -491,10 +477,6 @@ class SimObject(object): type = 'SimObject' abstract = True - @classmethod - def swig_objdecls(cls, code): - code('%include "python/swig/sim_object.i"') - # Initialize new instance. For objects with SimObject-valued # children, we need to recursively clone the classes represented # by those param values as well in a consistent "deep copy"-style diff --git a/src/python/m5/params.py b/src/python/m5/params.py index ee94ae004..87fc25131 100644 --- a/src/python/m5/params.py +++ b/src/python/m5/params.py @@ -81,10 +81,17 @@ class MetaParamValue(type): class ParamValue(object): __metaclass__ = MetaParamValue + + # Generate the code needed as a prerequisite for declaring a C++ + # object of this type. Typically generates one or more #include + # statements. Used when declaring parameters of this type. @classmethod def cxx_predecls(cls, code): pass + # Generate the code needed as a prerequisite for including a + # reference to a C++ object of this type in a SWIG .i file. + # Typically generates one or more %import or %include statements. @classmethod def swig_predecls(cls, code): pass @@ -101,8 +108,6 @@ class ParamValue(object): # Regular parameter description. class ParamDesc(object): - file_ext = 'ptype' - def __init__(self, ptype_str, ptype, *args, **kwargs): self.ptype_str = ptype_str # remember ptype only if it is provided @@ -223,8 +228,6 @@ class SimObjectVector(VectorParamValue): yield obj class VectorParamDesc(ParamDesc): - file_ext = 'vptype' - # Convert assigned value to appropriate type. If the RHS is not a # list or tuple, it generates a single-element list. def convert(self, value): @@ -240,10 +243,14 @@ class VectorParamDesc(ParamDesc): else: return VectorParamValue(tmp_list) + def swig_module_name(self): + return "%s_vector" % self.ptype_str + def swig_predecls(self, code): - code('%import "vptype_${{self.ptype_str}}.i"') + code('%import "${{self.swig_module_name()}}.i"') def swig_decl(self, code): + code('%module(package="m5.internal") ${{self.swig_module_name()}}') code('%{') self.ptype.cxx_predecls(code) code('%}') @@ -1043,6 +1050,19 @@ namespace Enums { } // namespace Enums ''') + def swig_decl(cls, code): + name = cls.__name__ + code('''\ +%module(package="m5.internal") enum_$name + +%{ +#include "enums/$name.hh" +%} + +%include "enums/$name.hh" +''') + + # Base class for enum types. class Enum(ParamValue): __metaclass__ = MetaEnum diff --git a/src/sim/System.py b/src/sim/System.py index a6897d834..1a69db95f 100644 --- a/src/sim/System.py +++ b/src/sim/System.py @@ -40,6 +40,8 @@ class MemoryMode(Enum): vals = ['invalid', 'atomic', 'timing'] class System(SimObject): type = 'System' + # This method is temporarily obsolete. Its functionality will be + # restored in a future changeset. @classmethod def swig_objdecls(cls, code): code('%include "python/swig/system.i"')