private var type_ids: Map[MType, Int] is noinit
private var type_colors: Map[MType, Int] is noinit
private var opentype_colors: Map[MType, Int] is noinit
+ private var thunks_to_compile: Set[SeparateRuntimeFunction] = new HashSet[SeparateRuntimeFunction]
init do
var file = new_file("nit.common")
compiler.compile_types
end
+ fun thunk_todo(thunk: SeparateRuntimeFunction)
+ do
+ # Concrete instance of `SeparateRuntimeFunction` are already
+ # handled by the compiler. Avoid duplicate compilation.
+ if thunk isa SeparateThunkFunction then
+ thunks_to_compile.add(thunk)
+ end
+ end
+
# Color and compile type structures and cast information
fun compile_types
do
# Collect all bas box class
# FIXME: this is not completely fine with a separate compilation scheme
for classname in ["Int", "Bool", "Byte", "Char", "Float", "CString",
- "Pointer", "Int8", "Int16", "UInt16", "Int32", "UInt32"] do
+ "Pointer", "Int8", "Int16", "UInt16", "Int32", "UInt32"] do
var classes = self.mainmodule.model.get_mclasses_by_name(classname)
if classes == null then continue
assert classes.length == 1 else print_error classes.join(", ")
else
return self.box_kinds[mclass]
end
-
end
fun compile_color_consts(colors: Map[Object, Int]) do
attr_tables[mclass] = attr_colorer.build_layout(mclass)
end
-
end
# colorize live types of the program
return tables
end
-
private fun compute_type_test_layouts(mtypes: Set[MClassType], cast_types: Set[MType]) do
# Group cast_type by their classes
var bucklets = new HashMap[MClass, Set[MType]]
end
end
end
+ var compiled_thunks = new Array[SeparateRuntimeFunction]
+ # Compile thunks here to write them in the same module they are declared.
+ for thunk in thunks_to_compile do
+ if thunk.mmethoddef.mclassdef.mmodule == mmodule then
+ thunk.compile_to_c(self)
+ compiled_thunks.add(thunk)
+ end
+ end
+ thunks_to_compile.remove_all(compiled_thunks)
self.mainmodule = old_module
end
v.add("return (val*){res};")
v.add("\}")
return
+ else if mclass.name == "RoutineRef" then
+ self.header.add_decl("struct instance_{c_name} \{")
+ self.header.add_decl("const struct type *type;")
+ self.header.add_decl("const struct class *class;")
+ self.header.add_decl("val* recv;")
+ self.header.add_decl("nitmethod_t method;")
+ self.header.add_decl("\};")
+
+ self.provide_declaration("NEW_{c_name}", "{mtype.ctype} NEW_{c_name}(val* recv, nitmethod_t method, const struct class* class, const struct type* type);")
+ v.add_decl("/* allocate {mtype} */")
+ v.add_decl("{mtype.ctype} NEW_{c_name}(val* recv, nitmethod_t method, const struct class* class, const struct type* type)\{")
+ var res = v.get_name("self")
+ v.add_decl("struct instance_{c_name} *{res};")
+ var alloc = v.nit_alloc("sizeof(struct instance_{c_name})", mclass.full_name)
+ v.add("{res} = {alloc};")
+ v.add("{res}->type = type;")
+ hardening_live_type(v, "type")
+ v.add("{res}->class = class;")
+ v.add("{res}->recv = recv;")
+ v.add("{res}->method = method;")
+ v.add("return (val*){res};")
+ v.add("\}")
+ return
else if mtype.mclass.kind == extern_kind and mtype.mclass.name != "CString" then
# Is an extern class (other than Pointer and CString)
# Pointer is caught in a previous `if`, and CString is internal
var alloc = v.nit_alloc("sizeof(struct instance) + {attrs.length}*sizeof(nitattribute_t)", mclass.full_name)
v.add("{res} = {alloc};")
end
- if modelbuilder.toolcontext.opt_trace.value then v.add("tracepoint(Nit_Compiler, Object_Instance,\"{mtype}\", (intptr_t)self);")
+ if modelbuilder.toolcontext.opt_trace.value then
+ v.add("tracepoint(Nit_Compiler, Object_Instance,\"{mtype}\", (uintptr_t)self);")
+ v.add("GC_register_finalizer(self, object_destroy_callback, NULL, NULL, NULL);")
+ end
v.add("{res}->type = type;")
hardening_live_type(v, "type")
v.require_declaration("class_{c_name}")
self.add("{recv}[{i}]={val};")
end
+ redef fun routine_ref_instance(routine_type, recv, mmethoddef)
+ do
+ #debug "ENTER ref_instance"
+ var mmethod = mmethoddef.mproperty
+ # routine_mclass is the specialized one, e.g: FunRef1, ProcRef2, etc..
+ var routine_mclass = routine_type.mclass
+
+ var nclasses = mmodule.model.get_mclasses_by_name("RoutineRef").as(not null)
+ var base_routine_mclass = nclasses.first
+
+ # All routine classes use the same `NEW` constructor.
+ # However, they have different declared `class` and `type` value.
+ self.require_declaration("NEW_{base_routine_mclass.c_name}")
+
+ var recv_class_cname = recv.mcasttype.as(MClassType).mclass.c_name
+ var my_recv = recv
+
+ if recv.mtype.is_c_primitive then
+ my_recv = autobox(recv, mmodule.object_type)
+ end
+ var my_recv_mclass_type = my_recv.mtype.as(MClassType)
+
+ # The class of the concrete Routine must exist (e.g ProcRef0, FunRef0, etc.)
+ self.require_declaration("class_{routine_mclass.c_name}")
+ self.require_declaration("type_{routine_type.c_name}")
+
+ compiler.undead_types.add(routine_type)
+ self.require_declaration(mmethoddef.c_name)
+
+ var thunk_function = mmethoddef.callref_thunk(my_recv_mclass_type)
+ # If the receiver is exact, then there's no need to make a
+ # polymorph call to the underlying method.
+ thunk_function.polymorph_call_flag = not my_recv.is_exact
+ var runtime_function = mmethoddef.virtual_runtime_function
+
+ var is_c_equiv = runtime_function.msignature.c_equiv(thunk_function.msignature)
+
+ var c_ref = thunk_function.c_ref
+ if is_c_equiv then
+ var const_color = mmethoddef.mproperty.const_color
+ c_ref = "{class_info(my_recv)}->vft[{const_color}]"
+ self.require_declaration(const_color)
+ else
+ self.require_declaration(thunk_function.c_name)
+ compiler.thunk_todo(thunk_function)
+ end
+
+ # Each RoutineRef points to a receiver AND a callref_thunk
+ var res = self.new_expr("NEW_{base_routine_mclass.c_name}({my_recv}, (nitmethod_t){c_ref}, &class_{routine_mclass.c_name}, &type_{routine_type.c_name})", routine_type)
+ #debug "LEAVING ref_instance"
+ return res
+ end
+
+ redef fun routine_ref_call(mmethoddef, arguments)
+ do
+ #debug "ENTER ref_call"
+ compiler.modelbuilder.nb_invok_by_tables += 1
+ if compiler.modelbuilder.toolcontext.opt_invocation_metrics.value then add("count_invoke_by_tables++;")
+ var nclasses = mmodule.model.get_mclasses_by_name("RoutineRef").as(not null)
+ var nclass = nclasses.first
+ var runtime_function = mmethoddef.virtual_runtime_function
+
+ # Save the current receiver since adapt_signature will autobox
+ # the routine receiver which is not the underlying receiver.
+ # The underlying receiver has already been adapted in the
+ # `routine_ref_instance` method. Here we just want to adapt the
+ # rest of the signature, but it's easier to pass the wrong
+ # receiver in adapt_signature then discards it with `shift`.
+ #
+ # ~~~~nitish
+ # class A; def toto do print "toto"; end
+ # var a = new A
+ # var f = &a.toto # `a` is the underlying receiver
+ # f.call # here `f` is the routine receiver
+ # ~~~~
+ var routine = arguments.first
+
+ # Retrieve the concrete routine type
+ var original_recv_c = "(((struct instance_{nclass.c_name}*){arguments[0]})->recv)"
+ var nitmethod = "(({runtime_function.c_funptrtype})(((struct instance_{nclass.c_name}*){arguments[0]})->method))"
+ if arguments.length > 1 then
+ adapt_signature(mmethoddef, arguments)
+ end
+
+ var ret_mtype = runtime_function.called_signature.return_mtype
+
+ if ret_mtype != null then
+ # `ret` is actually always nullable Object. When invoking
+ # a callref, we don't have the original callsite information.
+ # Thus, we need to recompute the return type of the callsite.
+ ret_mtype = resolve_for(ret_mtype, routine)
+ end
+
+ # remove the routine's receiver
+ arguments.shift
+ var ss = arguments.join(", ")
+ # replace the receiver with the original one
+ if arguments.length > 0 then
+ ss = "{original_recv_c}, {ss}"
+ else
+ ss = original_recv_c
+ end
+
+ arguments.unshift routine # put back the routine ref receiver
+ add "/* {mmethoddef.mproperty} on {arguments.first.inspect}*/"
+ var callsite = "{nitmethod}({ss})"
+ if ret_mtype != null then
+ var subres = new_expr("{callsite}", ret_mtype)
+ ret(subres)
+ else
+ add("{callsite};")
+ end
+ end
+
fun link_unresolved_type(mclassdef: MClassDef, mtype: MType) do
assert mtype.need_anchor
var compiler = self.compiler
end
return res
end
+
+ # Returns true if the current method definition differ from
+ # its original introduction in terms of receiver type.
+ fun recv_differ_from_intro: Bool
+ do
+ var intromclassdef = mproperty.intro.mclassdef
+ var introrecv = intromclassdef.bound_mtype
+ return self.mclassdef.bound_mtype != introrecv
+ end
+
+ # The C thunk function associated to a mmethoddef. Receives only nullable
+ # Object and cast them to the original mmethoddef signature.
+ fun callref_thunk(recv_mtype: MClassType): SeparateThunkFunction
+ do
+ var res = callref_thunk_cache
+ if res == null then
+ var object_type = mclassdef.mmodule.object_type
+ var nullable_object = object_type.as_nullable
+ var ps = new Array[MParameter]
+
+ # Replace every argument type by nullable object
+ for p in msignature.mparameters do
+ ps.push(new MParameter(p.name, nullable_object, p.is_vararg))
+ end
+ var ret: nullable MType = null
+ if msignature.return_mtype != null then ret = nullable_object
+ var msignature2 = new MSignature(ps, ret)
+ var intromclassdef = mproperty.intro.mclassdef
+
+ res = new SeparateThunkFunction(self, recv_mtype, msignature2, "THUNK_{c_name}", mclassdef.bound_mtype)
+ res.polymorph_call_flag = true
+ callref_thunk_cache = res
+ end
+ return res
+ end
+
+ private var callref_thunk_cache: nullable SeparateThunkFunction
private var separate_runtime_function_cache: nullable SeparateRuntimeFunction
# The C function associated to a mmethoddef, that can be stored into a VFT of a class
self.virtual_runtime_function_cache = res
return res
end
-
- res = new SeparateRuntimeFunction(self, recv, msignature, "VIRTUAL_{c_name}")
- self.virtual_runtime_function_cache = res
- res.is_thunk = true
+ res = new SeparateThunkFunction(self, recv, msignature, "VIRTUAL_{c_name}", mclassdef.bound_mtype)
end
return res
end
# The name on the compiled method
redef var build_c_name: String
- # Statically call the original body instead
- var is_thunk = false
-
redef fun to_s do return self.mmethoddef.to_s
+ redef fun msignature
+ do
+ return called_signature
+ end
+
+ redef fun recv_mtype
+ do
+ return called_recv
+ end
+
+ redef fun return_mtype
+ do
+ return called_signature.return_mtype
+ end
+
# The C return type (something or `void`)
var c_ret: String is lazy do
var ret = called_signature.return_mtype
# The C type for the function pointer.
var c_funptrtype: String is lazy do return "{c_ret}(*){c_sig}"
- redef fun compile_to_c(compiler)
+ redef fun declare_signature(v, sig)
do
- var mmethoddef = self.mmethoddef
-
- var sig = "{c_ret} {c_name}{c_sig}"
- compiler.provide_declaration(self.c_name, "{sig};")
-
- var rta = compiler.as(SeparateCompiler).runtime_type_analysis
-
- var recv = self.mmethoddef.mclassdef.bound_mtype
- var v = compiler.new_visitor
- var selfvar = new RuntimeVariable("self", called_recv, recv)
- var arguments = new Array[RuntimeVariable]
- var frame = new StaticFrame(v, mmethoddef, recv, arguments)
- v.frame = frame
-
- var msignature = called_signature
- var ret = called_signature.return_mtype
-
- var comment = new FlatBuffer
- comment.append("({selfvar}: {selfvar.mtype}")
- arguments.add(selfvar)
- for i in [0..msignature.arity[ do
- var mp = msignature.mparameters[i]
- var mtype = mp.mtype
- if mp.is_vararg then
- mtype = v.mmodule.array_type(mtype)
- end
- comment.append(", {mtype}")
- var argvar = new RuntimeVariable("p{i}", mtype, mtype)
- arguments.add(argvar)
- end
- comment.append(")")
- if ret != null then
- comment.append(": {ret}")
- end
-
- v.add_decl("/* method {self} for {comment} */")
- v.add_decl("{sig} \{")
- if ret != null then
- frame.returnvar = v.new_var(ret)
- end
- frame.returnlabel = v.get_name("RET_LABEL")
+ v.compiler.provide_declaration(c_name, "{sig};")
+ end
- if is_thunk then
- var subret = v.call(mmethoddef, recv, arguments)
- if ret != null then
- assert subret != null
- v.assign(frame.returnvar.as(not null), subret)
- end
- else if rta != null and not rta.live_mmodules.has(mmethoddef.mclassdef.mmodule) then
+ redef fun body_to_c(v)
+ do
+ var rta = v.compiler.as(SeparateCompiler).runtime_type_analysis
+ if rta != null and not rta.live_mmodules.has(mmethoddef.mclassdef.mmodule) then
v.add_abort("FATAL: Dead method executed.")
else
- mmethoddef.compile_inside_to_c(v, arguments)
+ super
end
+ end
- v.add("{frame.returnlabel.as(not null)}:;")
- if ret != null then
- v.add("return {frame.returnvar.as(not null)};")
- end
- v.add("\}")
+ redef fun end_compile_to_c(v)
+ do
+ var compiler = v.compiler
compiler.names[self.c_name] = "{mmethoddef.full_name} ({mmethoddef.location.file.filename}:{mmethoddef.location.line_start})"
end
+ redef fun build_frame(v, arguments)
+ do
+ var recv = mmethoddef.mclassdef.bound_mtype
+ return new StaticFrame(v, mmethoddef, recv, arguments)
+ end
+
# Compile the trampolines used to implement late-binding.
#
# See `opt_trampoline_call`.
end
end
+class SeparateThunkFunction
+ super ThunkFunction
+ super SeparateRuntimeFunction
+ redef var target_recv
+end
+
redef class MType
# Are values of `self` tagged?
# If false, it means that the type is not primitive, or is boxed.
nitlanguage / nit.git / blobdiff