apache / tomcat-connectors - Conditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

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Conditional Complexity Overall

There are 782 units with 24,954 lines of code in units (36.4% of code).

11 very complex units (2,861 lines of code)
25 complex units (4,432 lines of code)
81 medium complex units (5,472 lines of code)
105 simple units (3,715 lines of code)
560 very simple units (8,474 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
static int JK_METHOD service() in native/common/jk_status.c	500	135	4
static int JK_METHOD service() in native/common/jk_lb_worker.c	384	97	4
PCRE_EXP_DECL int pcre_pattern_to_host_byte_order() in native/iis/pcre/pcre_byte_order.c	197	80	3
static void commit_all_members() in native/common/jk_status.c	271	77	5
static int sc_for_req_method() in native/common/jk_ajp_common.c	141	76	2
static int init_ws_service() in native/apache-2.0/mod_jk.c	339	74	3
static int init_ws_service() in native/iis/jk_isapi_plugin.c	322	70	3
static void status_write_uri() in native/common/jk_status.c	130	57	11
static int ajpv12_handle_request() in native/common/jk_ajp12_worker.c	134	52	3
public void execute() in jkstatus/src/share/org/apache/jk/status/JkStatusTask.java	185	51	0
static DWORD handle_notify_event() in native/iis/jk_isapi_plugin.c	258	51	2
static void display_worker_lb() in native/common/jk_status.c	385	50	5
static int jk_handler() in native/apache-2.0/mod_jk.c	242	49	1
static void display_worker_ajp_details() in native/common/jk_status.c	314	46	9
static int ajp_send_request() in native/common/jk_ajp_common.c	212	46	5
static int ajp_process_callback() in native/common/jk_ajp_common.c	227	45	5
static int JK_METHOD ajp_service() in native/common/jk_ajp_common.c	252	45	4
static void form_all_members() in native/common/jk_status.c	181	43	5
static int commit_member() in native/common/jk_status.c	206	43	7
static int jk_translate() in native/apache-2.0/mod_jk.c	185	42	1
static int JK_METHOD start_response() in native/iis/jk_isapi_plugin.c	152	40	6
static int init_jk() in native/iis/jk_isapi_plugin.c	193	39	1
static int JK_METHOD validate() in native/common/jk_lb_worker.c	168	39	4
int jk_resolve() in native/common/jk_connect.c	165	38	6
static int update_worker() in native/common/jk_status.c	158	37	3
static int ajp_get_reply() in native/common/jk_ajp_common.c	148	36	5
static int read_registry_init_data() in native/iis/jk_isapi_plugin.c	139	34	1
static int jk_post_config() in native/apache-2.0/mod_jk.c	152	33	4
static int jk_map_to_storage() in native/apache-2.0/mod_jk.c	124	32	1
int jk_unescape_url() in native/common/jk_url.c	111	32	7
static void list_workers_type() in native/common/jk_status.c	119	32	5
int jk_servlet_normalize() in native/common/jk_util.c	73	31	2
jk_sock_t jk_open_socket() in native/common/jk_connect.c	196	30	7
int jk_shm_open() in native/common/jk_shm.c	163	29	3
int JK_METHOD ajp_maintain() in native/common/jk_ajp_common.c	103	28	4
static void dump_options() in native/apache-2.0/mod_jk.c	64	27	2
static jk_uint32_t status_cmd_props() in native/common/jk_status.c	41	25	1
static void display_map() in native/common/jk_status.c	108	25	8
static void commit_worker() in native/common/jk_status.c	120	25	4
static int JK_METHOD init() in native/common/jk_status.c	91	25	4
static int sc_for_req_header() in native/common/jk_ajp_common.c	66	25	1
int jk_lb_get_state_code() in native/common/jk_lb_worker.c	20	25	1
DWORD WINAPI HttpExtensionProc() in native/iis/jk_isapi_plugin.c	134	24	1
static int do_shm_open() in native/common/jk_shm.c	172	24	4
static int ajpv12_handle_response() in native/common/jk_ajp12_worker.c	142	24	3
int jk_log() in native/common/jk_util.c	115	23	7
static int ajp_unmarshal_response() in native/common/jk_ajp_common.c	96	22	4
static int get_most_suitable_worker() in native/common/jk_lb_worker.c	108	22	5
int jk_shutdown_socket() in native/common/jk_connect.c	89	21	2
static jk_uint32_t status_get_single_rating() in native/common/jk_status.c	41	20	2