alibaba / PhotonLibOS

Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

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Duplication Overall

50% duplication:

42,210 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
21,244 duplicated lines

371 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
common (41%) --> include (45%)	9228	44 file pairs	details...
include (14%) --> thread (39%)	2940	14 file pairs	details...
include (13%) --> net (24%)	2734	14 file pairs	details...
fs (17%) --> include (11%)	2231	19 file pairs	details...
ecosystem (69%) --> include (7%)	1456	3 file pairs	details...
include (5%) --> rpc (38%)	1102	3 file pairs	details...
include (2%) --> io (10%)	406	5 file pairs	details...
include (<1%) --> ROOT (31%)	72	1 file pair	details...

Open 2D force graph... Open 3D force graph...

Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 371 duplicates...

Size	#	Folders	Files	Lines	Code
526	x 2	common include/photon/common	iovector.h iovector.h	50:1080 (100%) 50:1080 (100%)	view
503	x 2	ecosystem include/photon/ecosystem	redis.h redis.h	24:718 (100%) 24:718 (100%)	view
429	x 2	common include/photon/common	alog.h alog.h	31:714 (100%) 31:714 (100%)	view
422	x 2	common include/photon/common	estring.h estring.h	32:741 (100%) 32:741 (100%)	view
366	x 2	common include/photon/common	lockfree_queue.h lockfree_queue.h	36:590 (100%) 36:590 (100%)	view
353	x 2	include/photon/net net	curl.h curl.h	31:521 (100%) 31:521 (100%)	view
347	x 2	include/photon/rpc rpc	serialize.h serialize.h	30:583 (100%) 30:583 (100%)	view
311	x 2	include/photon/thread thread	thread.h thread.h	30:536 (100%) 30:536 (100%)	view
290	x 2	common include/photon/common	string-keyed.h string-keyed.h	29:512 (100%) 29:512 (100%)	view
281	x 2	common include/photon/common	expirecontainer.h expirecontainer.h	37:465 (100%) 37:465 (100%)	view
258	x 2	include/photon/thread thread	std-compat.h std-compat.h	30:442 (100%) 30:442 (100%)	view
252	x 2	include/photon/thread thread	list.h list.h	21:439 (100%) 21:439 (100%)	view
215	x 2	fs include/photon/fs	filesystem.h filesystem.h	25:347 (100%) 25:347 (100%)	view
214	x 2	include/photon/net net	socket.h socket.h	36:344 (100%) 36:344 (100%)	view
203	x 2	fs include/photon/fs	async_filesystem.h async_filesystem.h	24:296 (100%) 24:296 (100%)	view
203	x 2	fs include/photon/fs	range-split.h range-split.h	27:374 (100%) 27:374 (100%)	view
202	x 2	include/photon/thread thread	coro20.h coro20.h	13:315 (100%) 13:315 (100%)	view
190	x 2	common include/photon/common	conststr.h conststr.h	24:300 (100%) 24:300 (100%)	view
157	x 2	include/photon/net/http net/http	message.h message.h	28:256 (100%) 28:256 (100%)	view
154	x 2	common include/photon/common	utility.h utility.h	28:335 (100%) 28:335 (100%)	view
150	x 2	fs include/photon/fs	forwardfs.h forwardfs.h	20:337 (100%) 20:337 (100%)	view
148	x 2	ecosystem include/photon/ecosystem	simple_dom.h simple_dom.h	20:230 (100%) 20:230 (100%)	view
138	x 2	include/photon/net net	basic_socket.h basic_socket.h	28:236 (100%) 28:236 (100%)	view
136	x 2	common include/photon/common	objectcachev2.h objectcachev2.h	32:227 (100%) 32:227 (100%)	view
132	x 2	fs include/photon/fs	path.h path.h	26:259 (100%) 26:259 (100%)	view
132	x 2	include/photon/rpc rpc	rpc.h rpc.h	26:283 (100%) 26:283 (100%)	view
127	x 2	common/metric-meter include/photon/common/metric-meter	metrics.h metrics.h	27:202 (100%) 27:202 (100%)	view
123	x 2	common include/photon/common	async.h async.h	30:252 (100%) 30:252 (100%)	view
113	x 2	include/photon/net/http net/http	client.h client.h	30:180 (100%) 30:180 (100%)	view
110	x 2	common include/photon/common	io-alloc.h io-alloc.h	31:210 (100%) 31:210 (100%)	view
107	x 2	include/photon/net/http net/http	headers.h headers.h	28:170 (100%) 28:170 (100%)	view
103	x 2	common include/photon/common	generator.h generator.h	21:205 (100%) 21:205 (100%)	view
100	x 2	common include/photon/common	range-lock.h range-lock.h	22:173 (100%) 22:173 (100%)	view
99	x 2	include/photon/io io	fd-events.h fd-events.h	23:219 (100%) 23:219 (100%)	view
97	x 2	common include/photon/common	throttle.h throttle.h	6:143 (100%) 6:143 (100%)	view
85	x 2	common include/photon/common	rcuptr.h rcuptr.h	31:166 (100%) 31:166 (100%)	view
84	x 2	common include/photon/common	ring.h ring.h	25:147 (100%) 25:147 (100%)	view
83	x 2	common include/photon/common	identity-pool.h identity-pool.h	28:154 (100%) 28:154 (100%)	view
82	x 2	include/photon/thread thread	st.h st.h	28:131 (100%) 28:131 (100%)	view
82	x 2	include/photon/thread thread	thread11.h thread11.h	27:161 (100%) 27:161 (100%)	view
80	x 2	common include/photon/common	callback.h callback.h	29:173 (100%) 29:173 (100%)	view
77	x 2	ecosystem include/photon/ecosystem	simple_dom_impl.h simple_dom_impl.h	29:141 (100%) 29:141 (100%)	view
73	x 2	common include/photon/common	consistent-hash-map.h consistent-hash-map.h	25:169 (100%) 25:169 (100%)	view
72	x 2	include/photon/rpc rpc	out-of-order-execution.h out-of-order-execution.h	32:192 (100%) 32:192 (100%)	view
70	x 2	include/photon/net/http net/http	url.h url.h	21:113 (100%) 21:113 (100%)	view
64	x 2	common/executor include/photon/common/executor	executor.h executor.h	24:113 (100%) 24:113 (100%)	view
62	x 2	include/photon/thread thread	thread-pool.h thread-pool.h	21:123 (100%) 21:123 (100%)	view
61	x 2	common include/photon/common	uuid.h uuid.h	22:138 (100%) 22:138 (100%)	view
59	x 2	include/photon/net net	datagram_socket.h datagram_socket.h	22:114 (100%) 22:114 (100%)	view
57	x 2	common include/photon/common	tuple-assistance.h tuple-assistance.h	22:118 (100%) 22:118 (100%)	view

Duplicated Units

The list of top 50 duplicated units.

See data for all 156 unit duplicates...

Size	#	Folders	Files	Lines	Code
95	x 2	include/photon/net net	socket.h socket.h	45:153 45:153	view
61	x 2	include/photon/common common	generator.h generator.h	141:208 141:208	view
57	x 2	include/photon/fs fs	range-split.h range-split.h	133:192 133:192	view
43	x 2	include/photon/rpc rpc	out-of-order-execution.h out-of-order-execution.h	146:193 146:193	view
37	x 2	include/photon/common common	PMF.h PMF.h	30:69 30:69	view
29	x 2	include/photon/common common	throttle.h throttle.h	61:99 61:99	view
26	x 2	include/photon/net net	socket.h socket.h	157:184 157:184	view
23	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	296:320 296:320	view
23	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	326:350 326:350	view
23	x 2	include/photon/fs fs	range-split.h range-split.h	346:376 346:376	view
21	x 2	io io	fstack-dpdk.cpp kqueue.cpp	155:177 159:181	view
21	x 2	include/photon/common common	objectcachev2.h objectcachev2.h	110:135 110:135	view
21	x 2	include/photon/common common	objectcachev2.h objectcachev2.h	177:199 177:199	view
19	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	191:211 191:211	view
19	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	213:233 213:233	view
19	x 2	include/photon/common common	estring.h estring.h	238:263 238:263	view
18	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	566:588 566:588	view
17	x 2	include/photon/common common	rcuptr.h rcuptr.h	77:95 77:95	view
15	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	442:458 442:458	view
15	x 2	include/photon/rpc rpc	rpc.h rpc.h	217:239 217:239	view
15	x 2	include/photon/rpc rpc	serialize.h serialize.h	542:561 542:561	view
14	x 2	include/photon/common common	iovector.h iovector.h	477:492 477:492	view
14	x 2	include/photon/common common	iovector.h iovector.h	568:583 568:583	view
14	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	460:475 460:475	view
13	x 2	include/photon/common common	iovector.h iovector.h	498:512 498:512	view
13	x 2	include/photon/common common	iovector.h iovector.h	589:603 589:603	view
13	x 2	include/photon/common common	range-lock.h range-lock.h	27:41 27:41	view
13	x 2	include/photon/net net	basic_socket.h basic_socket.h	92:108 92:108	view
13	x 2	fs/httpfs fs/httpfs	httpfs_v2.cpp httpfs.cpp	243:257 261:275	view
12	x 2	io io	fstack-dpdk.cpp kqueue.cpp	179:192 183:196	view
12	x 2	include/photon/common common	iovector.h iovector.h	815:829 815:829	view
12	x 2	include/photon/common common	range-lock.h range-lock.h	43:56 43:56	view
12	x 2	include/photon/common common	range-lock.h range-lock.h	85:98 85:98	view
12	x 2	include/photon/common/executor common/executor	executor.h executor.h	50:63 50:63	view
12	x 2	include/photon/thread thread	list.h list.h	397:411 397:411	view
12	x 2	include/photon/thread thread	list.h list.h	413:426 413:426	view
12	x 2	include/photon/thread thread	std-compat.h std-compat.h	40:54 40:54	view
11	x 2	include/photon/common common	iovector.h iovector.h	929:941 929:941	view
11	x 2	include/photon/common common	throttle.h throttle.h	18:30 18:30	view
11	x 2	include/photon/common common	enumerable.h enumerable.h	96:108 96:108	view
11	x 2	include/photon/thread thread	awaiter.h awaiter.h	54:66 54:66	view
11	x 2	include/photon/thread thread	timer.h timer.h	48:63 48:63	view
11	x 2	include/photon/thread thread	thread11.h thread11.h	136:160 136:160	view
11	x 2	include/photon/thread thread	list.h list.h	73:87 73:87	view
11	x 2	include/photon/thread thread	list.h list.h	383:396 383:396	view
11	x 2	include/photon/rpc rpc	serialize.h serialize.h	412:426 412:426	view
11	x 2	include/photon/net net	basic_socket.h basic_socket.h	181:193 181:193	view
11	x 2	include/photon/net net	basic_socket.h basic_socket.h	203:215 203:215	view
11	x 2	include/photon/net net	curl.h curl.h	413:426 413:426	view
10	x 2	include/photon/common common	lockfree_queue.h lockfree_queue.h	249:260 249:260	view