Construct FunctionEmpty

Kay Hayen

2013-08-15 08:15

Performance Diagrams

Source Code with Construct

def empty():
    pass

module_var = None

def calledRepeatedly(called):
    # Force a frame for now
    module_var

# construct_begin
    called()
# construct_end

    return called

import itertools
for x in itertools.repeat(None, 50000):
    calledRepeatedly(empty)

print("OK.")

Source Code without Construct

def empty():
    pass

module_var = None

def calledRepeatedly(called):
    # Force a frame for now
    module_var

# construct_begin



    return called

import itertools
for x in itertools.repeat(None, 50000):
    calledRepeatedly(empty)

print("OK.")

Context Diff of Source Code

	Construct			Baseline
	27	def calledRepeatedly(called):		27	def calledRepeatedly(called):
	28	# Force a frame for now		28	# Force a frame for now
	29	module_var		29	module_var
	30			30
	31	# construct_begin		31	# construct_begin
t	32	called()	t	32
	33	# construct_end		33
	34			34
	35	return called		35	return called
	36			36
	37	import itertools		37	import itertools
	38	for x in itertools.repeat(None, 50000):		38	for x in itertools.repeat(None, 50000):

Context Diff of Generated Code

	Construct			Baseline
	162	exception_lineno = 29;		162	exception_lineno = 29;
	163	type_description_1 = "o";		163	type_description_1 = "o";
	164	goto frame_exception_exit_1;		164	goto frame_exception_exit_1;
	165	}		165	}
	166	}		166	}
t	167	{	t
	168	PyObject *tmp_called_value_1;
	169	PyObject *tmp_call_result_1;
	170	CHECK_OBJECT(par_called);
	171	tmp_called_value_1 = par_called;
	172	frame_042169dd208e563e77acd9eea3448da0->m_frame.f_lineno = 32;
	173	tmp_call_result_1 = CALL_FUNCTION_NO_ARGS(tmp_called_value_1);
	174	if (tmp_call_result_1 == NULL) {
	175	assert(ERROR_OCCURRED());
	176
	177	FETCH_ERROR_OCCURRED(&exception_type, &exception_value, &exception_tb);
	178
	179
	180	exception_lineno = 32;
	181	type_description_1 = "o";
	182	goto frame_exception_exit_1;
	183	}
	184	Py_DECREF(tmp_call_result_1);
	185	}
	186			167
	187	#if 0		168	#if 0
	188	RESTORE_FRAME_EXCEPTION(frame_042169dd208e563e77acd9eea3448da0);		169	RESTORE_FRAME_EXCEPTION(frame_042169dd208e563e77acd9eea3448da0);
	189	#endif		170	#endif
	190			171