azure / AZNFS-mount - 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 598 units with 13,507 lines of code in units (76.4% of code).

2 very complex units (598 lines of code)
10 complex units (2,258 lines of code)
36 medium complex units (3,514 lines of code)
45 simple units (1,959 lines of code)
505 very simple units (5,178 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
std::vector bytes_chunk_cache::scan() in turbonfs/src/file_cache.cpp	531	73	6
const std::string rpc_task::fuse_opcode_to_string() in turbonfs/src/rpc_task.cpp	67	55	1
bool aznfsc_cfg::set_defaults_and_sanitize() in turbonfs/src/config.cpp	190	40	0
int main() in turbonfs/src/main.cpp	193	39	2
int bytes_chunk_cache::unit_test() in turbonfs/src/file_cache.cpp	483	37	0
bool aznfsc_cfg::parse_config_yaml() in turbonfs/src/config.cpp	158	34	0
static void readdirplus_callback() in turbonfs/src/rpc_task.cpp	224	33	4
static void readdir_callback() in turbonfs/src/rpc_task.cpp	186	31	4
void rpc_stats_az::dump_stats() in turbonfs/src/rpc_stats.cpp	392	31	0
int bytes_chunk_cache::truncate() in turbonfs/src/file_cache.cpp	196	26	3
void nfs_client::periodic_updater() in turbonfs/src/nfs_client.cpp	105	26	0
void fcsm::ensure_commit() in turbonfs/src/fcsm.cpp	131	26	5
void bytes_chunk_cache::inline_prune() in turbonfs/src/file_cache.cpp	111	25	0
static void read_callback() in turbonfs/src/rpc_task.cpp	220	25	4
void nfs_client::jukebox_runner() in turbonfs/src/nfs_client.cpp	248	25	0
void bytes_chunk_cache::clear_nolock() in turbonfs/src/file_cache.cpp	148	24	1
void fcsm::ensure_flush() in turbonfs/src/fcsm.cpp	122	23	5
void nfs_inode::sync_membufs() in turbonfs/src/nfs_inode.cpp	110	23	3
void rpc_task::send_readdir_or_readdirplus_response() in turbonfs/src/rpc_task.cpp	170	22	1
int nfs_inode::wait_for_ongoing_flush() in turbonfs/src/nfs_inode.cpp	91	22	0
void fcsm::on_flush_complete() in turbonfs/src/fcsm.cpp	133	21	1
void rename_callback() in turbonfs/src/rpc_task.cpp	126	19	4
void rpc_task::run_read() in turbonfs/src/rpc_task.cpp	155	18	0
void rpc_task::run_setattr() in turbonfs/src/rpc_task.cpp	80	17	0
static void readahead_callback() in turbonfs/src/readahead.cpp	167	16	4
bool readdirectory_cache::add() in turbonfs/src/rpc_readdir.cpp	83	16	3
bool nfs_client::getattr_sync() in turbonfs/src/nfs_client.cpp	82	16	3
bool nfs_connection::open() in turbonfs/src/connection.cpp	134	15	0
bool nfs_inode::update_nolock() in turbonfs/src/nfs_inode.cpp	65	15	2
void nfs_inode::lookup_dircache() in turbonfs/src/nfs_inode.cpp	68	14	5
static void __nofuse_init() in turbonfs/src/nofuse.cpp	67	13	0
bool readdirectory_cache::remove() in turbonfs/src/rpc_readdir.cpp	80	13	3
void nfs_client::get_inode_stats() in turbonfs/src/nfs_client.cpp	70	13	12
void fcsm::run() in turbonfs/src/fcsm.cpp	73	13	3
void unlink_callback() in turbonfs/src/rpc_task.cpp	63	12	4
std::shared_ptr readdirectory_cache::lookup() in turbonfs/src/rpc_readdir.cpp	40	12	3
bool nfs_inode::release() in turbonfs/src/nfs_inode.cpp	33	12	1
void on_rpc_free() in turbonfs/inc/rpc_stats.h	31	12	0
void set_kernel_readahead() in turbonfs/src/util.cpp	65	11	0
static void write_iov_callback() in turbonfs/src/rpc_task.cpp	121	11	4
void readdirectory_cache::clear() in turbonfs/src/rpc_readdir.cpp	58	11	1
void nfs_client::shutdown() in turbonfs/src/nfs_client.cpp	79	11	0
int nfs_client::lookup_sync() in turbonfs/src/nfs_client.cpp	86	11	3
void nfs_client::reply_entry() in turbonfs/src/nfs_client.cpp	76	11	4
void fcsm::on_commit_complete() in turbonfs/src/fcsm.cpp	109	11	1
int nfs_inode::copy_to_cache() in turbonfs/src/nfs_inode.cpp	91	11	4
void invalidate_cache() in turbonfs/inc/nfs_inode.h	32	11	2
fuse_ino_t get_ino() in turbonfs/inc/rpc_task.h	27	11	0
int64_t ra_state::get_next_ra() in turbonfs/src/readahead.cpp	33	10	1
static void commit_callback() in turbonfs/src/rpc_task.cpp	106	10	4