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