def __init__(self):
self.fromcache = InternalSpaceCache(self).getorbuild
self.user_del_action = FakeUserDelAction(self)
class dummy:
pass
self.config = dummy()
self.config.translating = False
# kill calls to c_call_i (i.e. slow path)
def c_call_i(space, cppmethod, cppobject, nargs, args):
assert not "slow path called"
return capi.c_call_i(space, cppmethod, cppobject, nargs, args)
executor.get_executor(
self, 'int').__class__.c_stubcall = staticmethod(c_call_i)
self.w_AttributeError = FakeException(self, "AttributeError")
self.w_KeyError = FakeException(self, "KeyError")
self.w_NotImplementedError = FakeException(self, "NotImplementedError")
self.w_ReferenceError = FakeException(self, "ReferenceError")
self.w_RuntimeError = FakeException(self, "RuntimeError")
self.w_SystemError = FakeException(self, "SystemError")
self.w_TypeError = FakeException(self, "TypeError")
self.w_ValueError = FakeException(self, "ValueError")
def _setup(self, cppthis):
self.converters = [
converter.get_converter(self.space, arg_type, arg_dflt) for arg_type, arg_dflt in self.arg_defs
]
self.executor = executor.get_executor(self.space, capi.c_method_result_type(self.scope, self.index))
# Each CPPMethod corresponds one-to-one to a C++ equivalent and cppthis
# has been offset to the matching class. Hence, the libffi pointer is
# uniquely defined and needs to be setup only once.
methgetter = capi.c_get_methptr_getter(self.scope, self.index)
if methgetter and cppthis: # methods only for now
funcptr = methgetter(rffi.cast(capi.C_OBJECT, cppthis))
argtypes_libffi = [conv.libffitype for conv in self.converters if conv.libffitype]
if len(argtypes_libffi) == len(self.converters) and self.executor.libffitype:
# add c++ this to the arguments
libffifunc = libffi.Func(
"XXX", [libffi.types.pointer] + argtypes_libffi, self.executor.libffitype, funcptr
)
self._libffifunc = libffifunc
def __init__(self):
self.fromcache = InternalSpaceCache(self).getorbuild
self.user_del_action = FakeUserDelAction(self)
class dummy: pass
self.config = dummy()
self.config.translating = False
# kill calls to c_call_i (i.e. slow path)
def c_call_i(space, cppmethod, cppobject, nargs, args):
assert not "slow path called"
return capi.c_call_i(space, cppmethod, cppobject, nargs, args)
executor.get_executor(self, 'int').__class__.c_stubcall = staticmethod(c_call_i)
self.w_AttributeError = FakeException(self, "AttributeError")
self.w_KeyError = FakeException(self, "KeyError")
self.w_NotImplementedError = FakeException(self, "NotImplementedError")
self.w_ReferenceError = FakeException(self, "ReferenceError")
self.w_RuntimeError = FakeException(self, "RuntimeError")
self.w_SystemError = FakeException(self, "SystemError")
self.w_TypeError = FakeException(self, "TypeError")
self.w_ValueError = FakeException(self, "ValueError")
def _setup(self, cppthis):
self.converters = [converter.get_converter(self.space, arg_type, arg_dflt)
for arg_type, arg_dflt in self.arg_defs]
self.executor = executor.get_executor(
self.space, capi.c_method_result_type(self.space, self.scope, self.index))
for conv in self.converters:
if conv.uses_local:
self.uses_local = True
break
# Each CPPMethod corresponds one-to-one to a C++ equivalent and cppthis
# has been offset to the matching class. Hence, the libffi pointer is
# uniquely defined and needs to be setup only once.
methgetter = capi.c_get_methptr_getter(self.space, self.scope, self.index)
if methgetter and cppthis: # methods only for now
cif_descr = lltype.nullptr(jit_libffi.CIF_DESCRIPTION)
try:
funcaddr = methgetter(rffi.cast(capi.C_OBJECT, cppthis))
self._funcaddr = rffi.cast(rffi.VOIDP, funcaddr)
nargs = self.args_expected + 1 # +1: cppthis
# memory block for CIF description (note: not tracked as the life
# time of methods is normally the duration of the application)
size = llmemory.sizeof(jit_libffi.CIF_DESCRIPTION, nargs)
# allocate the buffer
cif_descr = lltype.malloc(jit_libffi.CIF_DESCRIPTION_P.TO,
llmemory.raw_malloc_usage(size),
flavor='raw', track_allocation=False)
# array of 'ffi_type*' values, one per argument
size = rffi.sizeof(jit_libffi.FFI_TYPE_P) * nargs
atypes = lltype.malloc(rffi.CCHARP.TO, llmemory.raw_malloc_usage(size),
flavor='raw', track_allocation=False)
cif_descr.atypes = rffi.cast(jit_libffi.FFI_TYPE_PP, atypes)
# argument type specification
cif_descr.atypes[0] = jit_libffi.types.pointer # cppthis
for i, conv in enumerate(self.converters):
if not conv.libffitype:
raise FastCallNotPossible
cif_descr.atypes[i+1] = conv.libffitype
# result type specification
cif_descr.rtype = self.executor.libffitype
# exchange ---
# first, enough room for an array of 'nargs' pointers
exchange_offset = rffi.sizeof(rffi.CCHARP) * nargs
exchange_offset = (exchange_offset + 7) & ~7 # alignment
cif_descr.exchange_result = exchange_offset
cif_descr.exchange_result_libffi = exchange_offset
# TODO: left this out while testing (see ctypefunc.py)
# For results of precisely these types, libffi has a
# strange rule that they will be returned as a whole
# 'ffi_arg' if they are smaller. The difference
# only matters on big-endian.
# then enough room for the result, rounded up to sizeof(ffi_arg)
exchange_offset += max(rffi.getintfield(cif_descr.rtype, 'c_size'),
jit_libffi.SIZE_OF_FFI_ARG)
# loop over args
for i in range(nargs):
exchange_offset = (exchange_offset + 7) & ~7 # alignment
cif_descr.exchange_args[i] = exchange_offset
exchange_offset += rffi.getintfield(cif_descr.atypes[i], 'c_size')
# store the exchange data size
cif_descr.exchange_size = exchange_offset
# --- exchange
# extra
cif_descr.abi = clibffi.FFI_DEFAULT_ABI
cif_descr.nargs = self.args_expected + 1 # +1: cppthis
res = jit_libffi.jit_ffi_prep_cif(cif_descr)
if res != clibffi.FFI_OK:
raise FastCallNotPossible
except Exception, e:
if cif_descr:
lltype.free(cif_descr.atypes, flavor='raw', track_allocation=False)
lltype.free(cif_descr, flavor='raw', track_allocation=False)
cif_descr = lltype.nullptr(jit_libffi.CIF_DESCRIPTION)
self._funcaddr = lltype.nullptr(rffi.VOIDP.TO)
self.cif_descr = cif_descr
