def builtin_func_for_spec(rtyper, oopspec_name, ll_args, ll_res,
extra=None, extrakey=None):
assert (extra is None) == (extrakey is None)
key = (oopspec_name, tuple(ll_args), ll_res, extrakey)
try:
return rtyper._builtin_func_for_spec_cache[key]
except (KeyError, AttributeError):
pass
args_s = [lltype_to_annotation(v) for v in ll_args]
if '.' not in oopspec_name: # 'newxxx' operations
LIST_OR_DICT = ll_res
else:
LIST_OR_DICT = ll_args[0]
s_result = lltype_to_annotation(ll_res)
impl = setup_extra_builtin(rtyper, oopspec_name, len(args_s), extra)
if getattr(impl, 'need_result_type', False):
bk = rtyper.annotator.bookkeeper
args_s.insert(0, annmodel.SomePBC([bk.getdesc(deref(ll_res))]))
#
if hasattr(rtyper, 'annotator'): # regular case
mixlevelann = MixLevelHelperAnnotator(rtyper)
c_func = mixlevelann.constfunc(impl, args_s, s_result)
mixlevelann.finish()
else:
# for testing only
c_func = Constant(oopspec_name,
lltype.Ptr(lltype.FuncType(ll_args, ll_res)))
#
if not hasattr(rtyper, '_builtin_func_for_spec_cache'):
rtyper._builtin_func_for_spec_cache = {}
rtyper._builtin_func_for_spec_cache[key] = (c_func, LIST_OR_DICT)
#
return c_func, LIST_OR_DICT
def test_pseudohighlevelcallable():
t = TranslationContext()
t.buildannotator()
rtyper = t.buildrtyper()
rtyper.specialize()
a = MixLevelHelperAnnotator(rtyper)
class A:
value = 5
def double(self):
return self.value * 2
def fn1(a):
a2 = A()
a2.value = a.double()
return a2
s_A, r_A = a.s_r_instanceof(A)
fn1ptr = a.delayedfunction(fn1, [s_A], s_A)
pseudo = PseudoHighLevelCallable(fn1ptr, [s_A], s_A)
def fn2(n):
a = A()
a.value = n
a2 = pseudo(a)
return a2.value
graph = a.getgraph(fn2, [annmodel.SomeInteger()], annmodel.SomeInteger())
a.finish()
llinterp = LLInterpreter(rtyper)
res = llinterp.eval_graph(graph, [21])
assert res == 42
def test_pseudohighlevelcallable():
t = TranslationContext()
t.buildannotator()
rtyper = t.buildrtyper()
rtyper.specialize()
a = MixLevelHelperAnnotator(rtyper)
class A:
value = 5
def double(self):
return self.value * 2
def fn1(a):
a2 = A()
a2.value = a.double()
return a2
s_A, r_A = a.s_r_instanceof(A)
fn1ptr = a.delayedfunction(fn1, [s_A], s_A)
pseudo = PseudoHighLevelCallable(fn1ptr, [s_A], s_A)
def fn2(n):
a = A()
a.value = n
a2 = pseudo(a)
return a2.value
graph = a.getgraph(fn2, [annmodel.SomeInteger()], annmodel.SomeInteger())
a.finish()
llinterp = LLInterpreter(rtyper)
res = llinterp.eval_graph(graph, [21])
assert res == 42
def call_final_function(translator, final_func, annhelper=None):
"""When the program finishes normally, call 'final_func()'."""
from rpython.annotator import model as annmodel
from rpython.rtyper.lltypesystem import lltype
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
own_annhelper = (annhelper is None)
if own_annhelper:
annhelper = MixLevelHelperAnnotator(translator.rtyper)
c_final_func = annhelper.constfunc(final_func, [], annmodel.s_None)
if own_annhelper:
annhelper.finish()
entry_point = translator.entry_point_graph
v = copyvar(translator.annotator, entry_point.getreturnvar())
extrablock = Block([v])
v_none = varoftype(lltype.Void)
newop = SpaceOperation('direct_call', [c_final_func], v_none)
extrablock.operations = [newop]
extrablock.closeblock(Link([v], entry_point.returnblock))
for block in entry_point.iterblocks():
if block is not extrablock:
for link in block.exits:
if link.target is entry_point.returnblock:
link.target = extrablock
checkgraph(entry_point)
def call_final_function(translator, final_func, annhelper=None):
"""When the program finishes normally, call 'final_func()'."""
from rpython.annotator import model as annmodel
from rpython.rtyper.lltypesystem import lltype
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
own_annhelper = (annhelper is None)
if own_annhelper:
annhelper = MixLevelHelperAnnotator(translator.rtyper)
c_final_func = annhelper.constfunc(final_func, [], annmodel.s_None)
if own_annhelper:
annhelper.finish()
entry_point = translator.entry_point_graph
v = entry_point.getreturnvar().copy()
extrablock = Block([v])
v_none = varoftype(lltype.Void)
newop = SpaceOperation('direct_call', [c_final_func], v_none)
extrablock.operations = [newop]
extrablock.closeblock(Link([v], entry_point.returnblock))
for block in entry_point.iterblocks():
if block is not extrablock:
for link in block.exits:
if link.target is entry_point.returnblock:
link.target = extrablock
checkgraph(entry_point)
def make_driverhook_graphs(self):
from rpython.rlib.jit import BaseJitCell
bk = self.rtyper.annotator.bookkeeper
classdef = bk.getuniqueclassdef(BaseJitCell)
s_BaseJitCell_or_None = annmodel.SomeInstance(classdef,
can_be_None=True)
s_BaseJitCell_not_None = annmodel.SomeInstance(classdef)
s_Str = annmodel.SomeString()
#
annhelper = MixLevelHelperAnnotator(self.translator.rtyper)
for jd in self.jitdrivers_sd:
jd._set_jitcell_at_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.set_jitcell_at, annmodel.s_None,
s_BaseJitCell_not_None)
jd._get_jitcell_at_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.get_jitcell_at, s_BaseJitCell_or_None)
jd._get_printable_location_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.get_printable_location, s_Str)
jd._confirm_enter_jit_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.confirm_enter_jit, annmodel.s_Bool,
onlygreens=False)
jd._can_never_inline_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.can_never_inline, annmodel.s_Bool)
jd._should_unroll_one_iteration_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.should_unroll_one_iteration,
annmodel.s_Bool)
annhelper.finish()
def _setup_frame_realloc(self, translate_support_code):
FUNC_TP = lltype.Ptr(
lltype.FuncType([llmemory.GCREF, lltype.Signed], llmemory.GCREF))
base_ofs = self.get_baseofs_of_frame_field()
def realloc_frame(frame, size):
try:
if not we_are_translated():
assert not self._exception_emulator[0]
frame = lltype.cast_opaque_ptr(jitframe.JITFRAMEPTR, frame)
if size > frame.jf_frame_info.jfi_frame_depth:
# update the frame_info size, which is for whatever reason
# not up to date
frame.jf_frame_info.update_frame_depth(base_ofs, size)
new_frame = jitframe.JITFRAME.allocate(frame.jf_frame_info)
frame.jf_forward = new_frame
i = 0
while i < len(frame.jf_frame):
new_frame.jf_frame[i] = frame.jf_frame[i]
frame.jf_frame[i] = 0
i += 1
new_frame.jf_savedata = frame.jf_savedata
new_frame.jf_guard_exc = frame.jf_guard_exc
# all other fields are empty
llop.gc_writebarrier(lltype.Void, new_frame)
return lltype.cast_opaque_ptr(llmemory.GCREF, new_frame)
except Exception as e:
print "Unhandled exception", e, "in realloc_frame"
return lltype.nullptr(llmemory.GCREF.TO)
def realloc_frame_crash(frame, size):
print "frame", frame, "size", size
return lltype.nullptr(llmemory.GCREF.TO)
if not translate_support_code:
fptr = llhelper(FUNC_TP, realloc_frame)
else:
FUNC = FUNC_TP.TO
args_s = [lltype_to_annotation(ARG) for ARG in FUNC.ARGS]
s_result = lltype_to_annotation(FUNC.RESULT)
mixlevelann = MixLevelHelperAnnotator(self.rtyper)
graph = mixlevelann.getgraph(realloc_frame, args_s, s_result)
fptr = mixlevelann.graph2delayed(graph, FUNC)
mixlevelann.finish()
self.realloc_frame = heaptracker.adr2int(
llmemory.cast_ptr_to_adr(fptr))
if not translate_support_code:
fptr = llhelper(FUNC_TP, realloc_frame_crash)
else:
FUNC = FUNC_TP.TO
args_s = [lltype_to_annotation(ARG) for ARG in FUNC.ARGS]
s_result = lltype_to_annotation(FUNC.RESULT)
mixlevelann = MixLevelHelperAnnotator(self.rtyper)
graph = mixlevelann.getgraph(realloc_frame_crash, args_s, s_result)
fptr = mixlevelann.graph2delayed(graph, FUNC)
mixlevelann.finish()
self.realloc_frame_crash = heaptracker.adr2int(
llmemory.cast_ptr_to_adr(fptr))
def complete_destrptr(gctransformer):
translator = gctransformer.translator
mixlevelannotator = MixLevelHelperAnnotator(translator.rtyper)
args_s = [lltype_to_annotation(STACKLET_PTR)]
s_result = annmodel.s_None
destrptr = mixlevelannotator.delayedfunction(stacklet_destructor, args_s, s_result)
mixlevelannotator.finish()
lltype.attachRuntimeTypeInfo(STACKLET, destrptr=destrptr)
def _setup_frame_realloc(self, translate_support_code):
FUNC_TP = lltype.Ptr(lltype.FuncType([llmemory.GCREF, lltype.Signed],
llmemory.GCREF))
base_ofs = self.get_baseofs_of_frame_field()
def realloc_frame(frame, size):
try:
if not we_are_translated():
assert not self._exception_emulator[0]
frame = lltype.cast_opaque_ptr(jitframe.JITFRAMEPTR, frame)
if size > frame.jf_frame_info.jfi_frame_depth:
# update the frame_info size, which is for whatever reason
# not up to date
frame.jf_frame_info.update_frame_depth(base_ofs, size)
new_frame = jitframe.JITFRAME.allocate(frame.jf_frame_info)
frame.jf_forward = new_frame
i = 0
while i < len(frame.jf_frame):
new_frame.jf_frame[i] = frame.jf_frame[i]
frame.jf_frame[i] = 0
i += 1
new_frame.jf_savedata = frame.jf_savedata
new_frame.jf_guard_exc = frame.jf_guard_exc
# all other fields are empty
llop.gc_writebarrier(lltype.Void, new_frame)
return lltype.cast_opaque_ptr(llmemory.GCREF, new_frame)
except Exception as e:
print "Unhandled exception", e, "in realloc_frame"
return lltype.nullptr(llmemory.GCREF.TO)
def realloc_frame_crash(frame, size):
print "frame", frame, "size", size
return lltype.nullptr(llmemory.GCREF.TO)
if not translate_support_code:
fptr = llhelper(FUNC_TP, realloc_frame)
else:
FUNC = FUNC_TP.TO
args_s = [lltype_to_annotation(ARG) for ARG in FUNC.ARGS]
s_result = lltype_to_annotation(FUNC.RESULT)
mixlevelann = MixLevelHelperAnnotator(self.rtyper)
graph = mixlevelann.getgraph(realloc_frame, args_s, s_result)
fptr = mixlevelann.graph2delayed(graph, FUNC)
mixlevelann.finish()
self.realloc_frame = heaptracker.adr2int(llmemory.cast_ptr_to_adr(fptr))
if not translate_support_code:
fptr = llhelper(FUNC_TP, realloc_frame_crash)
else:
FUNC = FUNC_TP.TO
args_s = [lltype_to_annotation(ARG) for ARG in FUNC.ARGS]
s_result = lltype_to_annotation(FUNC.RESULT)
mixlevelann = MixLevelHelperAnnotator(self.rtyper)
graph = mixlevelann.getgraph(realloc_frame_crash, args_s, s_result)
fptr = mixlevelann.graph2delayed(graph, FUNC)
mixlevelann.finish()
self.realloc_frame_crash = heaptracker.adr2int(llmemory.cast_ptr_to_adr(fptr))
def complete_destrptr(gctransformer):
translator = gctransformer.translator
mixlevelannotator = MixLevelHelperAnnotator(translator.rtyper)
args_s = [lltype_to_annotation(STACKLET_PTR)]
s_result = annmodel.s_None
destrptr = mixlevelannotator.delayedfunction(stacklet_destructor, args_s,
s_result)
mixlevelannotator.finish()
lltype.attachRuntimeTypeInfo(STACKLET, destrptr=destrptr)
def test_enforced_args():
from rpython.annotator.model import s_None
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
from rpython.translator.interactive import Translation
def f1():
str2charp("hello")
def f2():
str2charp("world")
t = Translation(f1, [])
t.rtype()
mixann = MixLevelHelperAnnotator(t.context.rtyper)
mixann.getgraph(f2, [], s_None)
mixann.finish()
def test_conditional_call(self):
def g():
pass
def f(n):
conditional_call(n >= 0, g)
def later(m):
conditional_call(m, g)
t = TranslationContext()
t.buildannotator().build_types(f, [int])
t.buildrtyper().specialize()
mix = MixLevelHelperAnnotator(t.rtyper)
mix.getgraph(later, [annmodel.s_Bool], annmodel.s_None)
mix.finish()
def test_enforced_args():
from rpython.annotator.model import s_None
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
from rpython.translator.interactive import Translation
def f1():
str2charp("hello")
def f2():
str2charp("world")
t = Translation(f1, [])
t.rtype()
mixann = MixLevelHelperAnnotator(t.context.rtyper)
mixann.getgraph(f2, [], s_None)
mixann.finish()
def test_conditional_call(self):
def g():
pass
def f(n):
conditional_call(n >= 0, g)
def later(m):
conditional_call(m, g)
t = TranslationContext()
t.buildannotator().build_types(f, [int])
t.buildrtyper().specialize()
mix = MixLevelHelperAnnotator(t.rtyper)
mix.getgraph(later, [annmodel.s_Bool], annmodel.s_None)
mix.finish()
def make_driverhook_graphs(self):
#
annhelper = MixLevelHelperAnnotator(self.translator.rtyper)
for jd in self.jitdrivers_sd:
jd._get_printable_location_ptr = self._make_hook_graph(
jd, annhelper, jd.jitdriver.get_printable_location,
annmodel.SomeString())
jd._get_unique_id_ptr = self._make_hook_graph(
jd, annhelper, jd.jitdriver.get_unique_id,
annmodel.SomeInteger())
jd._confirm_enter_jit_ptr = self._make_hook_graph(
jd,
annhelper,
jd.jitdriver.confirm_enter_jit,
annmodel.s_Bool,
onlygreens=False)
jd._can_never_inline_ptr = self._make_hook_graph(
jd, annhelper, jd.jitdriver.can_never_inline, annmodel.s_Bool)
jd._should_unroll_one_iteration_ptr = self._make_hook_graph(
jd, annhelper, jd.jitdriver.should_unroll_one_iteration,
annmodel.s_Bool)
#
items = []
types = ()
pos = ()
if jd.jitdriver.get_location:
assert hasattr(jd.jitdriver.get_location, '_loc_types'), """
You must decorate your get_location function:
from rpython.rlib.rjitlog import rjitlog as jl
@jl.returns(jl.MP_FILENAME, jl.MP_XXX, ...)
def get_loc(your, green, keys):
name = "x.txt" # extract it from your green keys
return (name, ...)
"""
types = jd.jitdriver.get_location._loc_types
del jd.jitdriver.get_location._loc_types
#
for _, type in types:
if type == 's':
items.append(annmodel.SomeString())
elif type == 'i':
items.append(annmodel.SomeInteger())
else:
raise NotImplementedError
s_Tuple = annmodel.SomeTuple(items)
jd._get_location_ptr = self._make_hook_graph(
jd, annhelper, jd.jitdriver.get_location, s_Tuple)
jd._get_loc_types = types
annhelper.finish()
def builtin_func_for_spec(rtyper,
oopspec_name,
ll_args,
ll_res,
extra=None,
extrakey=None):
assert (extra is None) == (extrakey is None)
key = (oopspec_name, tuple(ll_args), ll_res, extrakey)
try:
return rtyper._builtin_func_for_spec_cache[key]
except (KeyError, AttributeError):
pass
args_s = [lltype_to_annotation(v) for v in ll_args]
if '.' not in oopspec_name: # 'newxxx' operations
LIST_OR_DICT = ll_res
else:
LIST_OR_DICT = ll_args[0]
s_result = lltype_to_annotation(ll_res)
impl = setup_extra_builtin(rtyper, oopspec_name, len(args_s), extra)
if getattr(impl, 'need_result_type', False):
if hasattr(rtyper, 'annotator'):
bk = rtyper.annotator.bookkeeper
ll_restype = ll_res
if impl.need_result_type != 'exact':
ll_restype = ll_restype.TO
desc = bk.getdesc(ll_restype)
else:
class TestingDesc(object):
knowntype = int
pyobj = None
desc = TestingDesc()
args_s.insert(0, annmodel.SomePBC([desc]))
#
if hasattr(rtyper, 'annotator'): # regular case
mixlevelann = MixLevelHelperAnnotator(rtyper)
c_func = mixlevelann.constfunc(impl, args_s, s_result)
mixlevelann.finish()
else:
# for testing only
c_func = Constant(oopspec_name,
lltype.Ptr(lltype.FuncType(ll_args, ll_res)))
#
if not hasattr(rtyper, '_builtin_func_for_spec_cache'):
rtyper._builtin_func_for_spec_cache = {}
rtyper._builtin_func_for_spec_cache[key] = (c_func, LIST_OR_DICT)
#
return c_func, LIST_OR_DICT
def make_driverhook_graphs(self):
s_Str = annmodel.SomeString()
#
annhelper = MixLevelHelperAnnotator(self.translator.rtyper)
for jd in self.jitdrivers_sd:
jd._get_printable_location_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.get_printable_location, s_Str)
jd._confirm_enter_jit_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.confirm_enter_jit, annmodel.s_Bool,
onlygreens=False)
jd._can_never_inline_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.can_never_inline, annmodel.s_Bool)
jd._should_unroll_one_iteration_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.should_unroll_one_iteration,
annmodel.s_Bool)
annhelper.finish()
def make_driverhook_graphs(self):
s_Str = annmodel.SomeString()
#
annhelper = MixLevelHelperAnnotator(self.translator.rtyper)
for jd in self.jitdrivers_sd:
jd._get_printable_location_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.get_printable_location, s_Str)
jd._confirm_enter_jit_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.confirm_enter_jit, annmodel.s_Bool,
onlygreens=False)
jd._can_never_inline_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.can_never_inline, annmodel.s_Bool)
jd._should_unroll_one_iteration_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.should_unroll_one_iteration,
annmodel.s_Bool)
annhelper.finish()
def test_secondary_backendopt(self):
# checks an issue with a newly added graph that calls an
# already-exception-transformed graph. This can occur e.g.
# from a late-seen destructor added by the GC transformer
# which ends up calling existing code.
def common(n):
if n > 5:
raise ValueError
def main(n):
common(n)
def later(n):
try:
common(n)
return 0
except ValueError:
return 1
t = TranslationContext()
t.buildannotator().build_types(main, [int])
t.buildrtyper().specialize()
exctransformer = t.getexceptiontransformer()
exctransformer.create_exception_handling(graphof(t, common))
from rpython.annotator import model as annmodel
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
annhelper = MixLevelHelperAnnotator(t.rtyper)
later_graph = annhelper.getgraph(later, [annmodel.SomeInteger()],
annmodel.SomeInteger())
annhelper.finish()
annhelper.backend_optimize()
# ^^^ as the inliner can't handle exception-transformed graphs,
# this should *not* inline common() into later().
if option.view:
later_graph.show()
common_graph = graphof(t, common)
found = False
for block in later_graph.iterblocks():
for op in block.operations:
if (op.opname == 'direct_call'
and op.args[0].value._obj.graph is common_graph):
found = True
assert found, "cannot find the call (buggily inlined?)"
from rpython.rtyper.llinterp import LLInterpreter
llinterp = LLInterpreter(t.rtyper)
res = llinterp.eval_graph(later_graph, [10])
assert res == 1
def test_secondary_backendopt(self):
# checks an issue with a newly added graph that calls an
# already-exception-transformed graph. This can occur e.g.
# from a late-seen destructor added by the GC transformer
# which ends up calling existing code.
def common(n):
if n > 5:
raise ValueError
def main(n):
common(n)
def later(n):
try:
common(n)
return 0
except ValueError:
return 1
t = TranslationContext()
t.buildannotator().build_types(main, [int])
t.buildrtyper().specialize()
exctransformer = t.getexceptiontransformer()
exctransformer.create_exception_handling(graphof(t, common))
from rpython.annotator import model as annmodel
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
annhelper = MixLevelHelperAnnotator(t.rtyper)
later_graph = annhelper.getgraph(later, [annmodel.SomeInteger()], annmodel.SomeInteger())
annhelper.finish()
annhelper.backend_optimize()
# ^^^ as the inliner can't handle exception-transformed graphs,
# this should *not* inline common() into later().
if option.view:
later_graph.show()
common_graph = graphof(t, common)
found = False
for block in later_graph.iterblocks():
for op in block.operations:
if op.opname == "direct_call" and op.args[0].value._obj.graph is common_graph:
found = True
assert found, "cannot find the call (buggily inlined?)"
from rpython.rtyper.llinterp import LLInterpreter
llinterp = LLInterpreter(t.rtyper)
res = llinterp.eval_graph(later_graph, [10])
assert res == 1
def make_driverhook_graphs(self):
#
annhelper = MixLevelHelperAnnotator(self.translator.rtyper)
for jd in self.jitdrivers_sd:
jd._get_printable_location_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.get_printable_location,
annmodel.SomeString())
jd._get_unique_id_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.get_unique_id, annmodel.SomeInteger())
jd._confirm_enter_jit_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.confirm_enter_jit, annmodel.s_Bool,
onlygreens=False)
jd._can_never_inline_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.can_never_inline, annmodel.s_Bool)
jd._should_unroll_one_iteration_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.should_unroll_one_iteration,
annmodel.s_Bool)
#
items = []
types = ()
pos = ()
if jd.jitdriver.get_location:
assert hasattr(jd.jitdriver.get_location, '_loc_types'), """
You must decorate your get_location function:
from rpython.rlib.rjitlog import rjitlog as jl
@jl.returns(jl.MP_FILENAME, jl.MP_XXX, ...)
def get_loc(your, green, keys):
name = "x.txt" # extract it from your green keys
return (name, ...)
"""
types = jd.jitdriver.get_location._loc_types
del jd.jitdriver.get_location._loc_types
#
for _,type in types:
if type == 's':
items.append(annmodel.SomeString())
elif type == 'i':
items.append(annmodel.SomeInteger())
else:
raise NotImplementedError
s_Tuple = annmodel.SomeTuple(items)
jd._get_location_ptr = self._make_hook_graph(jd,
annhelper, jd.jitdriver.get_location, s_Tuple)
jd._get_loc_types = types
annhelper.finish()
def replace_force_virtualizable(self, rtyper, graphs):
from rpython.annotator import model as annmodel
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
graph = graphs[0]
for block, op in graph.iterblockops():
if op.opname == 'jit_force_virtualizable':
v_inst_ll_type = op.args[0].concretetype
break
def mycall(vinst_ll):
if vinst_ll.vable_token:
raise ValueError
annhelper = MixLevelHelperAnnotator(rtyper)
s_vinst = SomePtr(v_inst_ll_type)
funcptr = annhelper.delayedfunction(mycall, [s_vinst], annmodel.s_None)
annhelper.finish()
replace_force_virtualizable_with_call(graphs, v_inst_ll_type, funcptr)
return funcptr
def replace_force_virtualizable(self, rtyper, graphs):
from rpython.annotator import model as annmodel
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
graph = graphs[0]
for block, op in graph.iterblockops():
if op.opname == 'jit_force_virtualizable':
v_inst_ll_type = op.args[0].concretetype
break
def mycall(vinst_ll):
if vinst_ll.vable_token:
raise ValueError
annhelper = MixLevelHelperAnnotator(rtyper)
s_vinst = SomePtr(v_inst_ll_type)
funcptr = annhelper.delayedfunction(mycall, [s_vinst], annmodel.s_None)
annhelper.finish()
replace_force_virtualizable_with_call(graphs, v_inst_ll_type, funcptr)
return funcptr
def call_initial_function(translator, initial_func, annhelper=None):
"""Before the program starts, call 'initial_func()'."""
from rpython.annotator import model as annmodel
from rpython.rtyper.lltypesystem import lltype
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
own_annhelper = (annhelper is None)
if own_annhelper:
annhelper = MixLevelHelperAnnotator(translator.rtyper)
c_initial_func = annhelper.constfunc(initial_func, [], annmodel.s_None)
if own_annhelper:
annhelper.finish()
entry_point = translator.entry_point_graph
args = [v.copy() for v in entry_point.getargs()]
extrablock = Block(args)
v_none = varoftype(lltype.Void)
newop = SpaceOperation('direct_call', [c_initial_func], v_none)
extrablock.operations = [newop]
extrablock.closeblock(Link(args, entry_point.startblock))
entry_point.startblock = extrablock
checkgraph(entry_point)
def call_initial_function(translator, initial_func, annhelper=None):
"""Before the program starts, call 'initial_func()'."""
from rpython.annotator import model as annmodel
from rpython.rtyper.lltypesystem import lltype
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
own_annhelper = (annhelper is None)
if own_annhelper:
annhelper = MixLevelHelperAnnotator(translator.rtyper)
c_initial_func = annhelper.constfunc(initial_func, [], annmodel.s_None)
if own_annhelper:
annhelper.finish()
entry_point = translator.entry_point_graph
args = [copyvar(translator.annotator, v) for v in entry_point.getargs()]
extrablock = Block(args)
v_none = varoftype(lltype.Void)
newop = SpaceOperation('direct_call', [c_initial_func], v_none)
extrablock.operations = [newop]
extrablock.closeblock(Link(args, entry_point.startblock))
entry_point.startblock = extrablock
checkgraph(entry_point)
def getentrypointptr(self):
# XXX check that the entrypoint has the correct
# signature: list-of-strings -> int
if not self.make_entrypoint_wrapper:
bk = self.translator.annotator.bookkeeper
return getfunctionptr(bk.getdesc(self.entrypoint).getuniquegraph())
if self._entrypoint_wrapper is not None:
return self._entrypoint_wrapper
#
from rpython.annotator import model as annmodel
from rpython.rtyper.lltypesystem import rffi
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
from rpython.rtyper.llannotation import lltype_to_annotation
entrypoint = self.entrypoint
#
def entrypoint_wrapper(argc, argv):
"""This is a wrapper that takes "Signed argc" and "char **argv"
like the C main function, and puts them inside an RPython list
of strings before invoking the real entrypoint() function.
"""
list = [""] * argc
i = 0
while i < argc:
list[i] = rffi.charp2str(argv[i])
i += 1
return entrypoint(list)
#
mix = MixLevelHelperAnnotator(self.translator.rtyper)
args_s = [annmodel.SomeInteger(), lltype_to_annotation(rffi.CCHARPP)]
s_result = annmodel.SomeInteger()
graph = mix.getgraph(entrypoint_wrapper, args_s, s_result)
mix.finish()
res = getfunctionptr(graph)
self._entrypoint_wrapper = res
return res
def getentrypointptr(self):
# XXX check that the entrypoint has the correct
# signature: list-of-strings -> int
if not self.make_entrypoint_wrapper:
bk = self.translator.annotator.bookkeeper
return getfunctionptr(bk.getdesc(self.entrypoint).getuniquegraph())
if self._entrypoint_wrapper is not None:
return self._entrypoint_wrapper
#
from rpython.annotator import model as annmodel
from rpython.rtyper.lltypesystem import rffi
from rpython.rtyper.annlowlevel import MixLevelHelperAnnotator
from rpython.rtyper.llannotation import lltype_to_annotation
entrypoint = self.entrypoint
#
def entrypoint_wrapper(argc, argv):
"""This is a wrapper that takes "Signed argc" and "char **argv"
like the C main function, and puts them inside an RPython list
of strings before invoking the real entrypoint() function.
"""
list = [""] * argc
i = 0
while i < argc:
list[i] = rffi.charp2str(argv[i])
i += 1
return entrypoint(list)
#
mix = MixLevelHelperAnnotator(self.translator.rtyper)
args_s = [annmodel.SomeInteger(),
lltype_to_annotation(rffi.CCHARPP)]
s_result = annmodel.SomeInteger()
graph = mix.getgraph(entrypoint_wrapper, args_s, s_result)
mix.finish()
res = getfunctionptr(graph)
self._entrypoint_wrapper = res
return res
load_result = rmarshal.get_loader(s_result)
except (NotImplementedError, rmarshal.CannotMarshal,
rmarshal.CannotUnmarshall), e:
msg = 'Not Implemented: %s' % (e, )
log.WARNING(msg)
def execute(*args):
not_implemented_stub(msg)
else:
def execute(*args):
# marshal the function name and input arguments
buf = []
dump_string(buf, fnname)
dump_arguments(buf, args)
# send the buffer and wait for the answer
loader = sandboxed_io(buf)
# decode the answer
result = load_result(loader)
loader.check_finished()
return result
execute = func_with_new_name(execute, 'sandboxed_' + fnname)
ann = MixLevelHelperAnnotator(db.translator.rtyper)
graph = ann.getgraph(execute, args_s, s_result)
ann.finish()
return graph
class ExceptionTransformer(object):
def __init__(self, translator):
self.translator = translator
self.raise_analyzer = canraise.RaiseAnalyzer(translator)
edata = translator.rtyper.exceptiondata
self.lltype_of_exception_value = edata.lltype_of_exception_value
self.lltype_of_exception_type = edata.lltype_of_exception_type
self.mixlevelannotator = MixLevelHelperAnnotator(translator.rtyper)
exc_data, null_type, null_value = self.setup_excdata()
(assertion_error_ll_exc_type,
assertion_error_ll_exc) = self.get_builtin_exception(AssertionError)
(n_i_error_ll_exc_type,
n_i_error_ll_exc) = self.get_builtin_exception(NotImplementedError)
self.c_assertion_error_ll_exc_type = constant_value(
assertion_error_ll_exc_type)
self.c_n_i_error_ll_exc_type = constant_value(n_i_error_ll_exc_type)
def rpyexc_occured():
exc_type = exc_data.exc_type
return bool(exc_type)
def rpyexc_fetch_type():
return exc_data.exc_type
def rpyexc_fetch_value():
return exc_data.exc_value
def rpyexc_clear():
exc_data.exc_type = null_type
exc_data.exc_value = null_value
def rpyexc_raise(etype, evalue):
# When compiling in debug mode, the following ll_asserts will
# crash the program as soon as it raises AssertionError or
# NotImplementedError. Useful when you are in a debugger.
# When compiling in release mode, AssertionErrors and
# NotImplementedErrors are raised normally, and only later
# caught by debug_catch_exception and printed, which allows
# us to see at least part of the traceback for them.
ll_assert(etype != assertion_error_ll_exc_type, "AssertionError")
ll_assert(etype != n_i_error_ll_exc_type, "NotImplementedError")
exc_data.exc_type = etype
exc_data.exc_value = evalue
lloperation.llop.debug_start_traceback(lltype.Void, etype)
def rpyexc_reraise(etype, evalue):
exc_data.exc_type = etype
exc_data.exc_value = evalue
lloperation.llop.debug_reraise_traceback(lltype.Void, etype)
def rpyexc_fetch_exception():
evalue = rpyexc_fetch_value()
rpyexc_clear()
return evalue
def rpyexc_restore_exception(evalue):
if evalue:
exc_data.exc_type = ll_inst_type(evalue)
exc_data.exc_value = evalue
self.rpyexc_occured_ptr = self.build_func("RPyExceptionOccurred",
rpyexc_occured, [],
lltype.Bool)
self.rpyexc_fetch_type_ptr = self.build_func(
"RPyFetchExceptionType", rpyexc_fetch_type, [],
self.lltype_of_exception_type)
self.rpyexc_fetch_value_ptr = self.build_func(
"RPyFetchExceptionValue", rpyexc_fetch_value, [],
self.lltype_of_exception_value)
self.rpyexc_clear_ptr = self.build_func("RPyClearException",
rpyexc_clear, [], lltype.Void)
self.rpyexc_raise_ptr = self.build_func(
"RPyRaiseException",
self.noinline(rpyexc_raise),
[self.lltype_of_exception_type, self.lltype_of_exception_value],
lltype.Void,
jitcallkind='rpyexc_raise') # for the JIT
self.rpyexc_reraise_ptr = self.build_func(
"RPyReRaiseException",
rpyexc_reraise,
[self.lltype_of_exception_type, self.lltype_of_exception_value],
lltype.Void,
jitcallkind='rpyexc_raise') # for the JIT
self.rpyexc_fetch_exception_ptr = self.build_func(
"RPyFetchException", rpyexc_fetch_exception, [],
self.lltype_of_exception_value)
self.rpyexc_restore_exception_ptr = self.build_func(
"RPyRestoreException", self.noinline(rpyexc_restore_exception),
[self.lltype_of_exception_value], lltype.Void)
self.build_extra_funcs()
self.mixlevelannotator.finish()
self.lltype_to_classdef = translator.rtyper.lltype_to_classdef_mapping(
)
def noinline(self, fn):
fn = func_with_new_name(fn, fn.__name__)
fn._dont_inline_ = True
return fn
def build_func(self, name, fn, inputtypes, rettype, **kwds):
l2a = lltype_to_annotation
graph = self.mixlevelannotator.getgraph(fn, map(l2a, inputtypes),
l2a(rettype))
return self.constant_func(name,
inputtypes,
rettype,
graph,
exception_policy="exc_helper",
**kwds)
def get_builtin_exception(self, Class):
edata = self.translator.rtyper.exceptiondata
bk = self.translator.annotator.bookkeeper
error_def = bk.getuniqueclassdef(Class)
error_ll_exc = edata.get_standard_ll_exc_instance(
self.translator.rtyper, error_def)
error_ll_exc_type = ll_inst_type(error_ll_exc)
return error_ll_exc_type, error_ll_exc
def transform_completely(self):
for graph in self.translator.graphs:
self.create_exception_handling(graph)
def create_exception_handling(self, graph):
"""After an exception in a direct_call (or indirect_call), that is not caught
by an explicit
except statement, we need to reraise the exception. So after this
direct_call we need to test if an exception had occurred. If so, we return
from the current graph with a special value (False/-1/-1.0/null).
Because of the added exitswitch we need an additional block.
"""
if hasattr(graph, 'exceptiontransformed'):
assert self.same_obj(self.exc_data_ptr, graph.exceptiontransformed)
return
else:
self.raise_analyzer.analyze_direct_call(graph)
graph.exceptiontransformed = self.exc_data_ptr
join_blocks(graph)
# collect the blocks before changing them
n_need_exc_matching_blocks = 0
n_gen_exc_checks = 0
#
entrymap = mkentrymap(graph)
if graph.exceptblock in entrymap:
for link in entrymap[graph.exceptblock]:
self.transform_jump_to_except_block(graph, entrymap, link)
#
for block in list(graph.iterblocks()):
self.replace_fetch_restore_operations(block)
need_exc_matching, gen_exc_checks = self.transform_block(
graph, block)
n_need_exc_matching_blocks += need_exc_matching
n_gen_exc_checks += gen_exc_checks
cleanup_graph(graph)
return n_need_exc_matching_blocks, n_gen_exc_checks
def replace_fetch_restore_operations(self, block):
# the gctransformer will create these operations. It looks as if the
# order of transformations is important - but the gctransformer will
# put them in a new graph, so all transformations will run again.
for i in range(len(block.operations)):
opname = block.operations[i].opname
if opname == 'gc_fetch_exception':
block.operations[i].opname = "direct_call"
block.operations[i].args = [self.rpyexc_fetch_exception_ptr]
elif opname == 'gc_restore_exception':
block.operations[i].opname = "direct_call"
block.operations[i].args.insert(
0, self.rpyexc_restore_exception_ptr)
elif opname == 'get_exception_addr': # only for lltype
block.operations[i].opname = "direct_call"
block.operations[i].args.insert(
0, self.rpyexc_get_exception_addr_ptr)
elif opname == 'get_exc_value_addr': # only for lltype
block.operations[i].opname = "direct_call"
block.operations[i].args.insert(
0, self.rpyexc_get_exc_value_addr_ptr)
def transform_block(self, graph, block):
need_exc_matching = False
n_gen_exc_checks = 0
if block is graph.exceptblock:
return need_exc_matching, n_gen_exc_checks
elif block is graph.returnblock:
return need_exc_matching, n_gen_exc_checks
last_operation = len(block.operations) - 1
if block.exitswitch == c_last_exception:
need_exc_matching = True
last_operation -= 1
elif (len(block.exits) == 1
and block.exits[0].target is graph.returnblock
and len(block.operations)
and (block.exits[0].args[0].concretetype is lltype.Void
or block.exits[0].args[0] is block.operations[-1].result)
and block.operations[-1].opname
not in ('malloc', 'malloc_varsize')): # special cases
last_operation -= 1
lastblock = block
for i in range(last_operation, -1, -1):
op = block.operations[i]
if not self.raise_analyzer.can_raise(op):
continue
splitlink = split_block(None, block, i + 1)
afterblock = splitlink.target
if lastblock is block:
lastblock = afterblock
self.gen_exc_check(block, graph.returnblock, afterblock)
n_gen_exc_checks += 1
if need_exc_matching:
assert lastblock.exitswitch == c_last_exception
if not self.raise_analyzer.can_raise(lastblock.operations[-1]):
lastblock.exitswitch = None
lastblock.recloseblock(lastblock.exits[0])
lastblock.exits[0].exitcase = None
else:
self.insert_matching(lastblock, graph)
return need_exc_matching, n_gen_exc_checks
def comes_from_last_exception(self, entrymap, link):
seen = set()
pending = [(link, link.args[1])]
while pending:
link, v = pending.pop()
if (link, v) in seen:
continue
seen.add((link, v))
if link.last_exc_value is not None and v is link.last_exc_value:
return True
block = link.prevblock
if block is None:
continue
for op in block.operations[::-1]:
if v is op.result:
if op.opname == 'cast_pointer':
v = op.args[0]
else:
break
for link in entrymap.get(block, ()):
for v1, v2 in zip(link.args, block.inputargs):
if v2 is v:
pending.append((link, v1))
return False
def transform_jump_to_except_block(self, graph, entrymap, link):
reraise = self.comes_from_last_exception(entrymap, link)
result = Variable()
result.concretetype = lltype.Void
block = Block([v.copy() for v in graph.exceptblock.inputargs])
if reraise:
block.operations = [
SpaceOperation("direct_call",
[self.rpyexc_reraise_ptr] + block.inputargs,
result),
]
else:
block.operations = [
SpaceOperation("direct_call",
[self.rpyexc_raise_ptr] + block.inputargs,
result),
SpaceOperation('debug_record_traceback', [],
varoftype(lltype.Void)),
]
link.target = block
RETTYPE = graph.returnblock.inputargs[0].concretetype
l = Link([error_constant(RETTYPE)], graph.returnblock)
block.recloseblock(l)
def insert_matching(self, block, graph):
proxygraph, op = self.create_proxy_graph(block.operations[-1])
block.operations[-1] = op
#non-exception case
block.exits[0].exitcase = block.exits[0].llexitcase = None
# use the dangerous second True flag :-)
inliner = inline.OneShotInliner(
self.translator,
graph,
self.lltype_to_classdef,
inline_guarded_calls=True,
inline_guarded_calls_no_matter_what=True,
raise_analyzer=self.raise_analyzer)
inliner.inline_once(block, len(block.operations) - 1)
#block.exits[0].exitcase = block.exits[0].llexitcase = False
def create_proxy_graph(self, op):
""" creates a graph which calls the original function, checks for
raised exceptions, fetches and then raises them again. If this graph is
inlined, the correct exception matching blocks are produced."""
# XXX slightly annoying: construct a graph by hand
# but better than the alternative
result = op.result.copy()
opargs = []
inputargs = []
callargs = []
ARGTYPES = []
for var in op.args:
if isinstance(var, Variable):
v = Variable()
v.concretetype = var.concretetype
inputargs.append(v)
opargs.append(v)
callargs.append(var)
ARGTYPES.append(var.concretetype)
else:
opargs.append(var)
newop = SpaceOperation(op.opname, opargs, result)
startblock = Block(inputargs)
startblock.operations.append(newop)
newgraph = FunctionGraph("dummy_exc1", startblock)
startblock.closeblock(Link([result], newgraph.returnblock))
newgraph.returnblock.inputargs[0].concretetype = op.result.concretetype
self.gen_exc_check(startblock, newgraph.returnblock)
excblock = Block([])
llops = rtyper.LowLevelOpList(None)
var_value = self.gen_getfield('exc_value', llops)
var_type = self.gen_getfield('exc_type', llops)
#
c_check1 = self.c_assertion_error_ll_exc_type
c_check2 = self.c_n_i_error_ll_exc_type
llops.genop('debug_catch_exception', [var_type, c_check1, c_check2])
#
self.gen_setfield('exc_value', self.c_null_evalue, llops)
self.gen_setfield('exc_type', self.c_null_etype, llops)
excblock.operations[:] = llops
newgraph.exceptblock.inputargs[
0].concretetype = self.lltype_of_exception_type
newgraph.exceptblock.inputargs[
1].concretetype = self.lltype_of_exception_value
excblock.closeblock(Link([var_type, var_value], newgraph.exceptblock))
startblock.exits[True].target = excblock
startblock.exits[True].args = []
fptr = self.constant_func("dummy_exc1", ARGTYPES,
op.result.concretetype, newgraph)
return newgraph, SpaceOperation("direct_call", [fptr] + callargs,
op.result)
def gen_exc_check(self, block, returnblock, normalafterblock=None):
llops = rtyper.LowLevelOpList(None)
spaceop = block.operations[-1]
alloc_shortcut = self.check_for_alloc_shortcut(spaceop)
if alloc_shortcut:
var_no_exc = self.gen_nonnull(spaceop.result, llops)
else:
v_exc_type = self.gen_getfield('exc_type', llops)
var_no_exc = self.gen_isnull(v_exc_type, llops)
#
# We could add a "var_no_exc is likely true" hint, but it seems
# not to help, so it was commented out again.
#var_no_exc = llops.genop('likely', [var_no_exc], lltype.Bool)
block.operations.extend(llops)
block.exitswitch = var_no_exc
#exception occurred case
b = Block([])
b.operations = [
SpaceOperation('debug_record_traceback', [],
varoftype(lltype.Void))
]
l = Link([error_constant(returnblock.inputargs[0].concretetype)],
returnblock)
b.closeblock(l)
l = Link([], b)
l.exitcase = l.llexitcase = False
#non-exception case
l0 = block.exits[0]
l0.exitcase = l0.llexitcase = True
block.recloseblock(l0, l)
insert_zeroing_op = False
if spaceop.opname in ['malloc', 'malloc_varsize']:
flavor = spaceop.args[1].value['flavor']
if flavor == 'gc':
insert_zeroing_op = True
true_zero = spaceop.args[1].value.get('zero', False)
# NB. when inserting more special-cases here, keep in mind that
# you also need to list the opnames in transform_block()
# (see "special cases")
if insert_zeroing_op:
if normalafterblock is None:
normalafterblock = insert_empty_block(None, l0)
v_result = spaceop.result
if v_result in l0.args:
result_i = l0.args.index(v_result)
v_result_after = normalafterblock.inputargs[result_i]
else:
v_result_after = v_result.copy()
l0.args.append(v_result)
normalafterblock.inputargs.append(v_result_after)
if true_zero:
opname = "zero_everything_inside"
else:
opname = "zero_gc_pointers_inside"
normalafterblock.operations.insert(
0,
SpaceOperation(opname, [v_result_after],
varoftype(lltype.Void)))
def setup_excdata(self):
EXCDATA = lltype.Struct('ExcData',
('exc_type', self.lltype_of_exception_type),
('exc_value', self.lltype_of_exception_value))
self.EXCDATA = EXCDATA
exc_data = lltype.malloc(EXCDATA, immortal=True)
null_type = lltype.nullptr(self.lltype_of_exception_type.TO)
null_value = lltype.nullptr(self.lltype_of_exception_value.TO)
self.exc_data_ptr = exc_data
self.cexcdata = Constant(exc_data, lltype.Ptr(self.EXCDATA))
self.c_null_etype = Constant(null_type, self.lltype_of_exception_type)
self.c_null_evalue = Constant(null_value,
self.lltype_of_exception_value)
return exc_data, null_type, null_value
def constant_func(self, name, inputtypes, rettype, graph, **kwds):
FUNC_TYPE = lltype.FuncType(inputtypes, rettype)
fn_ptr = lltype.functionptr(FUNC_TYPE, name, graph=graph, **kwds)
return Constant(fn_ptr, lltype.Ptr(FUNC_TYPE))
def gen_getfield(self, name, llops):
c_name = inputconst(lltype.Void, name)
return llops.genop('getfield', [self.cexcdata, c_name],
resulttype=getattr(self.EXCDATA, name))
def gen_setfield(self, name, v_value, llops):
c_name = inputconst(lltype.Void, name)
llops.genop('setfield', [self.cexcdata, c_name, v_value])
def gen_isnull(self, v, llops):
return llops.genop('ptr_iszero', [v], lltype.Bool)
def gen_nonnull(self, v, llops):
return llops.genop('ptr_nonzero', [v], lltype.Bool)
def same_obj(self, ptr1, ptr2):
return ptr1._same_obj(ptr2)
def check_for_alloc_shortcut(self, spaceop):
if spaceop.opname in ('malloc', 'malloc_varsize'):
return True
elif spaceop.opname == 'direct_call':
fnobj = spaceop.args[0].value._obj
if hasattr(fnobj, '_callable'):
oopspec = getattr(fnobj._callable, 'oopspec', None)
if oopspec and oopspec == 'newlist(length)':
return True
return False
def build_extra_funcs(self):
EXCDATA = self.EXCDATA
exc_data = self.exc_data_ptr
def rpyexc_get_exception_addr():
return (llmemory.cast_ptr_to_adr(exc_data) +
llmemory.offsetof(EXCDATA, 'exc_type'))
def rpyexc_get_exc_value_addr():
return (llmemory.cast_ptr_to_adr(exc_data) +
llmemory.offsetof(EXCDATA, 'exc_value'))
self.rpyexc_get_exception_addr_ptr = self.build_func(
"RPyGetExceptionAddr", rpyexc_get_exception_addr, [],
llmemory.Address)
self.rpyexc_get_exc_value_addr_ptr = self.build_func(
"RPyGetExcValueAddr", rpyexc_get_exc_value_addr, [],
llmemory.Address)
dump_arguments = rmarshal.get_marshaller(tuple(args_s))
load_result = rmarshal.get_loader(s_result)
except (NotImplementedError,
rmarshal.CannotMarshal,
rmarshal.CannotUnmarshall), e:
msg = 'Not Implemented: %s' % (e,)
log.WARNING(msg)
def execute(*args):
not_implemented_stub(msg)
else:
def execute(*args):
# marshal the function name and input arguments
buf = []
dump_string(buf, fnname)
dump_arguments(buf, args)
# send the buffer and wait for the answer
loader = sandboxed_io(buf)
# decode the answer
result = load_result(loader)
loader.check_finished()
return result
execute = func_with_new_name(execute, 'sandboxed_' + fnname)
ann = MixLevelHelperAnnotator(db.translator.rtyper)
graph = ann.getgraph(execute, args_s, s_result)
ann.finish()
return graph
class ExceptionTransformer(object):
def __init__(self, translator):
self.translator = translator
self.raise_analyzer = canraise.RaiseAnalyzer(translator)
edata = translator.rtyper.exceptiondata
self.lltype_of_exception_value = edata.lltype_of_exception_value
self.lltype_of_exception_type = edata.lltype_of_exception_type
self.mixlevelannotator = MixLevelHelperAnnotator(translator.rtyper)
exc_data, null_type, null_value = self.setup_excdata()
(assertion_error_ll_exc_type,
assertion_error_ll_exc) = self.get_builtin_exception(AssertionError)
(n_i_error_ll_exc_type,
n_i_error_ll_exc) = self.get_builtin_exception(NotImplementedError)
self.c_assertion_error_ll_exc_type = constant_value(
assertion_error_ll_exc_type)
self.c_n_i_error_ll_exc_type = constant_value(n_i_error_ll_exc_type)
def rpyexc_occured():
exc_type = exc_data.exc_type
return bool(exc_type)
def rpyexc_fetch_type():
return exc_data.exc_type
def rpyexc_fetch_value():
return exc_data.exc_value
def rpyexc_clear():
exc_data.exc_type = null_type
exc_data.exc_value = null_value
def rpyexc_raise(etype, evalue):
# When compiling in debug mode, the following ll_asserts will
# crash the program as soon as it raises AssertionError or
# NotImplementedError. Useful when you are in a debugger.
# When compiling in release mode, AssertionErrors and
# NotImplementedErrors are raised normally, and only later
# caught by debug_catch_exception and printed, which allows
# us to see at least part of the traceback for them.
ll_assert(etype != assertion_error_ll_exc_type, "AssertionError")
ll_assert(etype != n_i_error_ll_exc_type, "NotImplementedError")
exc_data.exc_type = etype
exc_data.exc_value = evalue
lloperation.llop.debug_start_traceback(lltype.Void, etype)
def rpyexc_reraise(etype, evalue):
exc_data.exc_type = etype
exc_data.exc_value = evalue
lloperation.llop.debug_reraise_traceback(lltype.Void, etype)
def rpyexc_fetch_exception():
evalue = rpyexc_fetch_value()
rpyexc_clear()
return evalue
def rpyexc_restore_exception(evalue):
if evalue:
exc_data.exc_type = ll_inst_type(evalue)
exc_data.exc_value = evalue
self.rpyexc_occured_ptr = self.build_func(
"RPyExceptionOccurred",
rpyexc_occured,
[], lltype.Bool)
self.rpyexc_fetch_type_ptr = self.build_func(
"RPyFetchExceptionType",
rpyexc_fetch_type,
[], self.lltype_of_exception_type)
self.rpyexc_fetch_value_ptr = self.build_func(
"RPyFetchExceptionValue",
rpyexc_fetch_value,
[], self.lltype_of_exception_value)
self.rpyexc_clear_ptr = self.build_func(
"RPyClearException",
rpyexc_clear,
[], lltype.Void)
self.rpyexc_raise_ptr = self.build_func(
"RPyRaiseException",
self.noinline(rpyexc_raise),
[self.lltype_of_exception_type, self.lltype_of_exception_value],
lltype.Void,
jitcallkind='rpyexc_raise') # for the JIT
self.rpyexc_reraise_ptr = self.build_func(
"RPyReRaiseException",
rpyexc_reraise,
[self.lltype_of_exception_type, self.lltype_of_exception_value],
lltype.Void,
jitcallkind='rpyexc_raise') # for the JIT
self.rpyexc_fetch_exception_ptr = self.build_func(
"RPyFetchException",
rpyexc_fetch_exception,
[], self.lltype_of_exception_value)
self.rpyexc_restore_exception_ptr = self.build_func(
"RPyRestoreException",
self.noinline(rpyexc_restore_exception),
[self.lltype_of_exception_value], lltype.Void)
self.build_extra_funcs()
self.mixlevelannotator.finish()
self.lltype_to_classdef = translator.rtyper.lltype_to_classdef_mapping()
def noinline(self, fn):
fn = func_with_new_name(fn, fn.__name__)
fn._dont_inline_ = True
return fn
def build_func(self, name, fn, inputtypes, rettype, **kwds):
l2a = lltype_to_annotation
graph = self.mixlevelannotator.getgraph(fn, map(l2a, inputtypes), l2a(rettype))
return self.constant_func(name, inputtypes, rettype, graph,
exception_policy="exc_helper", **kwds)
def get_builtin_exception(self, Class):
edata = self.translator.rtyper.exceptiondata
bk = self.translator.annotator.bookkeeper
error_def = bk.getuniqueclassdef(Class)
error_ll_exc = edata.get_standard_ll_exc_instance(
self.translator.rtyper, error_def)
error_ll_exc_type = ll_inst_type(error_ll_exc)
return error_ll_exc_type, error_ll_exc
def transform_completely(self):
for graph in self.translator.graphs:
self.create_exception_handling(graph)
def create_exception_handling(self, graph):
"""After an exception in a direct_call (or indirect_call), that is not caught
by an explicit
except statement, we need to reraise the exception. So after this
direct_call we need to test if an exception had occurred. If so, we return
from the current graph with a special value (False/-1/-1.0/null).
Because of the added exitswitch we need an additional block.
"""
if hasattr(graph, 'exceptiontransformed'):
assert self.same_obj(self.exc_data_ptr, graph.exceptiontransformed)
return
else:
self.raise_analyzer.analyze_direct_call(graph)
graph.exceptiontransformed = self.exc_data_ptr
join_blocks(graph)
# collect the blocks before changing them
n_need_exc_matching_blocks = 0
n_gen_exc_checks = 0
#
entrymap = mkentrymap(graph)
if graph.exceptblock in entrymap:
for link in entrymap[graph.exceptblock]:
self.transform_jump_to_except_block(graph, entrymap, link)
#
for block in list(graph.iterblocks()):
self.replace_fetch_restore_operations(block)
need_exc_matching, gen_exc_checks = self.transform_block(graph, block)
n_need_exc_matching_blocks += need_exc_matching
n_gen_exc_checks += gen_exc_checks
cleanup_graph(graph)
return n_need_exc_matching_blocks, n_gen_exc_checks
def replace_fetch_restore_operations(self, block):
# the gctransformer will create these operations. It looks as if the
# order of transformations is important - but the gctransformer will
# put them in a new graph, so all transformations will run again.
for i in range(len(block.operations)):
opname = block.operations[i].opname
if opname == 'gc_fetch_exception':
block.operations[i].opname = "direct_call"
block.operations[i].args = [self.rpyexc_fetch_exception_ptr]
elif opname == 'gc_restore_exception':
block.operations[i].opname = "direct_call"
block.operations[i].args.insert(0, self.rpyexc_restore_exception_ptr)
elif opname == 'get_exception_addr': # only for lltype
block.operations[i].opname = "direct_call"
block.operations[i].args.insert(0, self.rpyexc_get_exception_addr_ptr)
elif opname == 'get_exc_value_addr': # only for lltype
block.operations[i].opname = "direct_call"
block.operations[i].args.insert(0, self.rpyexc_get_exc_value_addr_ptr)
def transform_block(self, graph, block):
need_exc_matching = False
n_gen_exc_checks = 0
if block is graph.exceptblock:
return need_exc_matching, n_gen_exc_checks
elif block is graph.returnblock:
return need_exc_matching, n_gen_exc_checks
last_operation = len(block.operations) - 1
if block.exitswitch == c_last_exception:
need_exc_matching = True
last_operation -= 1
elif (len(block.exits) == 1 and
block.exits[0].target is graph.returnblock and
len(block.operations) and
(block.exits[0].args[0].concretetype is lltype.Void or
block.exits[0].args[0] is block.operations[-1].result) and
block.operations[-1].opname not in ('malloc', # special cases
'malloc_nonmovable')):
last_operation -= 1
lastblock = block
for i in range(last_operation, -1, -1):
op = block.operations[i]
if not self.raise_analyzer.can_raise(op):
continue
splitlink = split_block(None, block, i+1)
afterblock = splitlink.target
if lastblock is block:
lastblock = afterblock
self.gen_exc_check(block, graph.returnblock, afterblock)
n_gen_exc_checks += 1
if need_exc_matching:
assert lastblock.exitswitch == c_last_exception
if not self.raise_analyzer.can_raise(lastblock.operations[-1]):
#print ("operation %s cannot raise, but has exception"
# " guarding in graph %s" % (lastblock.operations[-1],
# graph))
lastblock.exitswitch = None
lastblock.recloseblock(lastblock.exits[0])
lastblock.exits[0].exitcase = None
else:
self.insert_matching(lastblock, graph)
return need_exc_matching, n_gen_exc_checks
def comes_from_last_exception(self, entrymap, link):
seen = set()
pending = [(link, link.args[1])]
while pending:
link, v = pending.pop()
if (link, v) in seen:
continue
seen.add((link, v))
if link.last_exc_value is not None and v is link.last_exc_value:
return True
block = link.prevblock
if block is None:
continue
for op in block.operations[::-1]:
if v is op.result:
if op.opname == 'cast_pointer':
v = op.args[0]
else:
break
for link in entrymap.get(block, ()):
for v1, v2 in zip(link.args, block.inputargs):
if v2 is v:
pending.append((link, v1))
return False
def transform_jump_to_except_block(self, graph, entrymap, link):
reraise = self.comes_from_last_exception(entrymap, link)
result = Variable()
result.concretetype = lltype.Void
block = Block([copyvar(None, v)
for v in graph.exceptblock.inputargs])
if reraise:
block.operations = [
SpaceOperation("direct_call",
[self.rpyexc_reraise_ptr] + block.inputargs,
result),
]
else:
block.operations = [
SpaceOperation("direct_call",
[self.rpyexc_raise_ptr] + block.inputargs,
result),
SpaceOperation('debug_record_traceback', [],
varoftype(lltype.Void)),
]
link.target = block
RETTYPE = graph.returnblock.inputargs[0].concretetype
l = Link([error_constant(RETTYPE)], graph.returnblock)
block.recloseblock(l)
def insert_matching(self, block, graph):
proxygraph, op = self.create_proxy_graph(block.operations[-1])
block.operations[-1] = op
#non-exception case
block.exits[0].exitcase = block.exits[0].llexitcase = None
# use the dangerous second True flag :-)
inliner = inline.OneShotInliner(
self.translator, graph, self.lltype_to_classdef,
inline_guarded_calls=True, inline_guarded_calls_no_matter_what=True,
raise_analyzer=self.raise_analyzer)
inliner.inline_once(block, len(block.operations)-1)
#block.exits[0].exitcase = block.exits[0].llexitcase = False
def create_proxy_graph(self, op):
""" creates a graph which calls the original function, checks for
raised exceptions, fetches and then raises them again. If this graph is
inlined, the correct exception matching blocks are produced."""
# XXX slightly annoying: construct a graph by hand
# but better than the alternative
result = copyvar(None, op.result)
opargs = []
inputargs = []
callargs = []
ARGTYPES = []
for var in op.args:
if isinstance(var, Variable):
v = Variable()
v.concretetype = var.concretetype
inputargs.append(v)
opargs.append(v)
callargs.append(var)
ARGTYPES.append(var.concretetype)
else:
opargs.append(var)
newop = SpaceOperation(op.opname, opargs, result)
startblock = Block(inputargs)
startblock.operations.append(newop)
newgraph = FunctionGraph("dummy_exc1", startblock)
startblock.closeblock(Link([result], newgraph.returnblock))
newgraph.returnblock.inputargs[0].concretetype = op.result.concretetype
self.gen_exc_check(startblock, newgraph.returnblock)
excblock = Block([])
llops = rtyper.LowLevelOpList(None)
var_value = self.gen_getfield('exc_value', llops)
var_type = self.gen_getfield('exc_type' , llops)
#
c_check1 = self.c_assertion_error_ll_exc_type
c_check2 = self.c_n_i_error_ll_exc_type
llops.genop('debug_catch_exception', [var_type, c_check1, c_check2])
#
self.gen_setfield('exc_value', self.c_null_evalue, llops)
self.gen_setfield('exc_type', self.c_null_etype, llops)
excblock.operations[:] = llops
newgraph.exceptblock.inputargs[0].concretetype = self.lltype_of_exception_type
newgraph.exceptblock.inputargs[1].concretetype = self.lltype_of_exception_value
excblock.closeblock(Link([var_type, var_value], newgraph.exceptblock))
startblock.exits[True].target = excblock
startblock.exits[True].args = []
fptr = self.constant_func("dummy_exc1", ARGTYPES, op.result.concretetype, newgraph)
return newgraph, SpaceOperation("direct_call", [fptr] + callargs, op.result)
def gen_exc_check(self, block, returnblock, normalafterblock=None):
#var_exc_occured = Variable()
#var_exc_occured.concretetype = lltype.Bool
#block.operations.append(SpaceOperation("safe_call", [self.rpyexc_occured_ptr], var_exc_occured))
llops = rtyper.LowLevelOpList(None)
spaceop = block.operations[-1]
alloc_shortcut = self.check_for_alloc_shortcut(spaceop)
if alloc_shortcut:
var_no_exc = self.gen_nonnull(spaceop.result, llops)
else:
v_exc_type = self.gen_getfield('exc_type', llops)
var_no_exc = self.gen_isnull(v_exc_type, llops)
block.operations.extend(llops)
block.exitswitch = var_no_exc
#exception occurred case
b = Block([])
b.operations = [SpaceOperation('debug_record_traceback', [],
varoftype(lltype.Void))]
l = Link([error_constant(returnblock.inputargs[0].concretetype)], returnblock)
b.closeblock(l)
l = Link([], b)
l.exitcase = l.llexitcase = False
#non-exception case
l0 = block.exits[0]
l0.exitcase = l0.llexitcase = True
block.recloseblock(l0, l)
insert_zeroing_op = False
if spaceop.opname == 'malloc':
flavor = spaceop.args[1].value['flavor']
if flavor == 'gc':
insert_zeroing_op = True
elif spaceop.opname == 'malloc_nonmovable':
# xxx we cannot insert zero_gc_pointers_inside after
# malloc_nonmovable, because it can return null. For now
# we simply always force the zero=True flag on
# malloc_nonmovable.
c_flags = spaceop.args[1]
c_flags.value = c_flags.value.copy()
spaceop.args[1].value['zero'] = True
# NB. when inserting more special-cases here, keep in mind that
# you also need to list the opnames in transform_block()
# (see "special cases")
if insert_zeroing_op:
if normalafterblock is None:
normalafterblock = insert_empty_block(None, l0)
v_result = spaceop.result
if v_result in l0.args:
result_i = l0.args.index(v_result)
v_result_after = normalafterblock.inputargs[result_i]
else:
v_result_after = copyvar(None, v_result)
l0.args.append(v_result)
normalafterblock.inputargs.append(v_result_after)
normalafterblock.operations.insert(
0, SpaceOperation('zero_gc_pointers_inside',
[v_result_after],
varoftype(lltype.Void)))
def setup_excdata(self):
EXCDATA = lltype.Struct('ExcData',
('exc_type', self.lltype_of_exception_type),
('exc_value', self.lltype_of_exception_value))
self.EXCDATA = EXCDATA
exc_data = lltype.malloc(EXCDATA, immortal=True)
null_type = lltype.nullptr(self.lltype_of_exception_type.TO)
null_value = lltype.nullptr(self.lltype_of_exception_value.TO)
self.exc_data_ptr = exc_data
self.cexcdata = Constant(exc_data, lltype.Ptr(self.EXCDATA))
self.c_null_etype = Constant(null_type, self.lltype_of_exception_type)
self.c_null_evalue = Constant(null_value, self.lltype_of_exception_value)
return exc_data, null_type, null_value
def constant_func(self, name, inputtypes, rettype, graph, **kwds):
FUNC_TYPE = lltype.FuncType(inputtypes, rettype)
fn_ptr = lltype.functionptr(FUNC_TYPE, name, graph=graph, **kwds)
return Constant(fn_ptr, lltype.Ptr(FUNC_TYPE))
def gen_getfield(self, name, llops):
c_name = inputconst(lltype.Void, name)
return llops.genop('getfield', [self.cexcdata, c_name],
resulttype = getattr(self.EXCDATA, name))
def gen_setfield(self, name, v_value, llops):
c_name = inputconst(lltype.Void, name)
llops.genop('setfield', [self.cexcdata, c_name, v_value])
def gen_isnull(self, v, llops):
return llops.genop('ptr_iszero', [v], lltype.Bool)
def gen_nonnull(self, v, llops):
return llops.genop('ptr_nonzero', [v], lltype.Bool)
def same_obj(self, ptr1, ptr2):
return ptr1._same_obj(ptr2)
def check_for_alloc_shortcut(self, spaceop):
if spaceop.opname in ('malloc', 'malloc_varsize'):
return True
elif spaceop.opname == 'direct_call':
fnobj = spaceop.args[0].value._obj
if hasattr(fnobj, '_callable'):
oopspec = getattr(fnobj._callable, 'oopspec', None)
if oopspec and oopspec == 'newlist(length)':
return True
return False
def build_extra_funcs(self):
EXCDATA = self.EXCDATA
exc_data = self.exc_data_ptr
def rpyexc_get_exception_addr():
return (llmemory.cast_ptr_to_adr(exc_data) +
llmemory.offsetof(EXCDATA, 'exc_type'))
def rpyexc_get_exc_value_addr():
return (llmemory.cast_ptr_to_adr(exc_data) +
llmemory.offsetof(EXCDATA, 'exc_value'))
self.rpyexc_get_exception_addr_ptr = self.build_func(
"RPyGetExceptionAddr",
rpyexc_get_exception_addr,
[], llmemory.Address)
self.rpyexc_get_exc_value_addr_ptr = self.build_func(
"RPyGetExcValueAddr",
rpyexc_get_exc_value_addr,
[], llmemory.Address)
def _annotate(rtyper, f, args_s, s_result):
ann = MixLevelHelperAnnotator(rtyper)
graph = ann.getgraph(f, args_s, s_result)
ann.finish()
return graph
def _annotate(rtyper, f, args_s, s_result):
ann = MixLevelHelperAnnotator(rtyper)
graph = ann.getgraph(f, args_s, s_result)
ann.finish()
return graph
