apache / mynewt-nimble - 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 1,737 units with 29,804 lines of code in units (17.9% of code).

0 very complex units (0 lines of code)
3 complex units (337 lines of code)
62 medium complex units (3,541 lines of code)
193 simple units (6,616 lines of code)
1,479 very simple units (19,310 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 trans_seg() in nimble/host/mesh/src/transport.c	167	31	5
def process_returned_parameters() in tools/hci_throughput/hci_commands.py	99	30	1
case BLE_HCI_OP() in nimble/controller/src/ble_ll_hci.c	71	26	2
bool bt_mesh_net_iv_update() in nimble/host/mesh/src/net.c	81	22	2
static int send_seg() in nimble/host/mesh/src/transport.c	111	22	5
static uint8_t _mod_pub_set() in nimble/host/mesh/src/cfg_srv.c	64	19	8
void state_binding() in apps/blemesh_models_example_2/src/state_binding.c	71	18	2
static int ctl_recv() in nimble/host/mesh/src/transport.c	53	18	4
int bt_mesh_prov_auth() in nimble/host/mesh/src/prov.c	71	17	4
int tc_ccm_decryption_verification() in ext/tinycrypt/src/ccm_mode.c	48	17	7
static void bt_mesh_net_relay() in nimble/host/mesh/src/net.c	53	16	2
int bt_mesh_friend_req() in nimble/host/mesh/src/friend.c	84	16	2
int bt_mesh_trans_recv() in nimble/host/mesh/src/transport.c	53	16	2
static int gen_delta_set_unack() in apps/blemesh_models_example_2/src/device_composition.c	71	15	3
static int gen_delta_set() in apps/blemesh_models_example_2/src/device_composition.c	74	15	3
static int light_ctl_set_unack() in apps/blemesh_models_example_2/src/device_composition.c	70	15	3
static int light_ctl_set() in apps/blemesh_models_example_2/src/device_composition.c	73	15	3
uint16_t bt_mesh_app_key_find() in nimble/host/mesh/src/app_keys.c	49	15	4
bool bt_mesh_net_cred_find() in nimble/host/mesh/src/subnet.c	65	15	4
static void lpn_timeout() in nimble/host/mesh/src/lpn.c	68	15	1
int bt_mesh_trans_send() in nimble/host/mesh/src/transport.c	58	15	4
int tc_ccm_generation_encryption() in ext/tinycrypt/src/ccm_mode.c	41	15	7
static int gen_move_set_unack() in apps/blemesh_models_example_2/src/device_composition.c	68	14	3
static int gen_move_set() in apps/blemesh_models_example_2/src/device_composition.c	71	14	3
static int light_ctl_temp_set_unack() in apps/blemesh_models_example_2/src/device_composition.c	66	14	3
static int light_ctl_temp_set() in apps/blemesh_models_example_2/src/device_composition.c	68	14	3
static void gen_prov_cont() in nimble/host/mesh/src/pb_adv.c	54	14	2
static int light_lightness_set_unack() in apps/blemesh_models_example_2/src/device_composition.c	58	13	3
static int light_lightness_set() in apps/blemesh_models_example_2/src/device_composition.c	61	13	3
static void gen_prov_start() in nimble/host/mesh/src/pb_adv.c	54	13	2
bool bt_mesh_rpl_check() in nimble/host/mesh/src/rpl.c	40	13	2
static bool prov_check_method() in nimble/host/mesh/src/provisioner.c	51	13	1
int bt_mesh_lpn_friend_update() in nimble/host/mesh/src/lpn.c	57	13	2
static int gen_onoff_set_unack() in apps/blemesh_models_example_2/src/device_composition.c	58	12	3
static int gen_level_set_unack() in apps/blemesh_models_example_2/src/device_composition.c	59	12	3
static int gen_level_set() in apps/blemesh_models_example_2/src/device_composition.c	62	12	3
static int gap_event() in apps/mesh_badge/src/main.c	67	12	2
int bt_mesh_provision() in nimble/host/mesh/src/mesh.c	60	12	6
int bt_mesh_net_send() in nimble/host/mesh/src/net.c	49	12	4
void bt_mesh_net_recv() in nimble/host/mesh/src/net.c	39	12	3
static int mod_app_get() in nimble/host/mesh/src/cfg_srv.c	67	12	3
static void store_pending() in nimble/host/mesh/src/settings.c	50	12	1
static void secure_beacon_recv() in nimble/host/mesh/src/beacon.c	51	12	1
int bt_mesh_lpn_friend_sub_cfm() in nimble/host/mesh/src/lpn.c	48	12	2
static int adv_start() in nimble/host/mesh/src/adv_ext.c	69	12	6
static int mod_member_list_handle() in nimble/host/mesh/src/cfg_cli.c	36	12	4
static int mod_pub_status() in nimble/host/mesh/src/cfg_cli.c	60	12	3
static int mod_sub_status() in nimble/host/mesh/src/cfg_cli.c	42	12	3
static int gen_onoff_set() in apps/blemesh_models_example_2/src/device_composition.c	59	11	3
static void show_statistics() in apps/mesh_badge/src/reel_board.c	55	11	1