apache / apr - Duplication

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

17% duplication:

69,296 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
12,356 duplicated lines

2,987 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
memcache (11%) --> redis (14%)	248	1 file pair	details...
include (1%) --> ldap (4%)	207	2 file pairs	details...
ldap (1%) --> poll (1%)	78	1 file pair	details...

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Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 2,987 duplicates...

Size	#	Folders	Files	Lines	Code
67	x 2	memcache redis	apr_memcache.c apr_redis.c	547:622 (6%) 502:577 (7%)	view
48	x 2	file_io/netware file_io/unix	filestat.c filestat.c	113:193 (21%) 157:236 (28%)	view
41	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_nss.c	242:330 (5%) 376:464 (4%)	view
39	x 2	file_io/netware file_io/unix	pipe.c pipe.c	67:124 (29%) 104:161 (25%)	view
38	x 2	time/unix time/win32	timestr.c timestr.c	44:87 (39%) 36:79 (25%)	view
37	x 2	dbd dbd	apr_dbd_pgsql.c apr_dbd_pgsql.c	415:464 (4%) 637:685 (4%)	view
37	x 2	threadproc/netware threadproc/os2	proc.c proc.c	55:111 (13%) 60:114 (9%)	view
35	x 2	threadproc/os2 threadproc/unix	proc.c proc.c	60:110 (8%) 40:90 (8%)	view
35	x 2	threadproc/beos threadproc/unix	proc.c proc.c	49:99 (12%) 40:90 (8%)	view
35	x 2	threadproc/netware threadproc/unix	proc.c proc.c	55:106 (12%) 40:90 (8%)	view
35	x 2	file_io/netware file_io/unix	pipe.c pipe.c	173:221 (26%) 237:286 (23%)	view
35	x 2	threadproc/beos threadproc/netware	proc.c proc.c	49:99 (12%) 55:106 (12%)	view
35	x 2	threadproc/beos threadproc/os2	proc.c proc.c	49:99 (12%) 60:110 (8%)	view
34	x 2	dbd dbd	apr_dbd_mysql.c apr_dbd_oracle.c	171:221 (3%) 287:337 (2%)	view
33	x 2	build build	make_exports.awk make_nw_export.awk	81:119 (27%) 37:73 (32%)	view
33	x 2	time/unix time/win32	timestr.c timestr.c	92:129 (34%) 84:121 (22%)	view
33	x 2	encoding encoding	apr_encode.c apr_encode.c	902:950 (3%) 1034:1082 (3%)	view
30	x 2	file_io/os2 file_io/unix	pipe.c pipe.c	124:165 (20%) 240:282 (19%)	view
30	x 2	file_io/netware file_io/os2	pipe.c pipe.c	176:217 (22%) 124:165 (20%)	view
29	x 2	encoding encoding	apr_encode.c apr_encode.c	1374:1415 (2%) 1452:1493 (2%)	view
29	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_commoncrypto.c	814:861 (3%) 1037:1084 (3%)	view
29	x 2	crypto crypto	apr_crypto_nss.c apr_crypto_nss.c	1044:1085 (3%) 1245:1286 (3%)	view
28	x 2	threadproc/beos threadproc/netware	thread.c thread.c	79:128 (15%) 81:130 (14%)	view
28	x 2	encoding encoding	apr_encode.c apr_encode.c	399:439 (2%) 491:531 (2%)	view
27	x 2	threadproc/netware threadproc/unix	proc.c proc.c	440:493 (9%) 686:740 (6%)	view
25	x 2	dbd dbd	apr_dbd_oracle.c apr_dbd_oracle.c	1147:1174 (1%) 1534:1561 (1%)	view
24	x 2	ldap ldap	apr_ldap.c apr_ldap.c	3385:3425 (1%) 3469:3509 (1%)	view
24	x 2	time/unix time/win32	time.c time.c	140:177 (14%) 183:221 (17%)	view
24	x 2	poll/unix poll/unix	poll.c port.c	32:64 (9%) 29:61 (7%)	view
23	x 2	include/arch/netware include/arch/unix	apr_arch_file_io.h apr_arch_file_io.h	98:125 (38%) 95:122 (44%)	view
23	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_commoncrypto.c	887:926 (3%) 1110:1149 (3%)	view
23	x 2	encoding encoding	apr_encode.c apr_encode.c	1002:1028 (2%) 1133:1159 (2%)	view
23	x 2	jose jose	apr_jose_decode.c apr_jose_decode.c	965:1009 (2%) 1110:1154 (2%)	view
23	x 2	threadproc/beos threadproc/netware	thread.c thread.c	158:204 (12%) 193:239 (11%)	view
22	x 2	threadproc/netware threadproc/unix	proc.c proc.c	380:412 (7%) 629:661 (5%)	view
22	x 2	dbd dbd	apr_dbd_oracle.c apr_dbd_oracle.c	1228:1250 (1%) 1615:1637 (1%)	view
22	x 2	file_io/netware file_io/unix	filestat.c filestat.c	376:416 (10%) 240:280 (13%)	view
21	x 2	ldap ldap	apr_ldap.c apr_ldap.c	3051:3085 (1%) 3203:3237 (1%)	view
21	x 2	build build	cvtdsp.pl cvtdsp.pl	374:394 (4%) 402:422 (4%)	view
21	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_nss.c	88:124 (2%) 95:136 (2%)	view
21	x 2	crypto crypto	apr_crypto_openssl.c apr_crypto_openssl.c	1055:1083 (2%) 1275:1303 (2%)	view
21	x 2	dbd dbd	apr_dbd_oracle.c apr_dbd_oracle.c	1256:1284 (1%) 1643:1671 (1%)	view
21	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_openssl.c	88:124 (2%) 181:220 (2%)	view
21	x 2	crypto crypto	apr_crypto_nss.c apr_crypto_openssl.c	95:136 (2%) 181:220 (2%)	view
20	x 2	file_io/netware file_io/unix	filestat.c filestat.c	77:109 (9%) 121:153 (11%)	view
20	x 2	threadproc/beos threadproc/unix	thread.c thread.c	91:126 (10%) 170:205 (8%)	view
20	x 2	ldap ldap	apr_ldap.c apr_ldap.c	3476:3509 (1%) 3564:3597 (1%)	view
20	x 2	crypto crypto	apr_crypto_openssl.c apr_crypto_openssl.c	842:861 (2%) 870:889 (2%)	view
20	x 2	threadproc/netware threadproc/os2	proc.c proc.c	211:242 (7%) 213:243 (4%)	view
20	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_commoncrypto.c	432:451 (2%) 541:560 (2%)	view

Duplicated Units

The list of top 10 duplicated units.

See data for all 10 unit duplicates...

Size	#	Folders	Files	Lines	Code
17	x 2	file_io/netware file_io/unix	filestat.c filestat.c	85:105 129:149	view
16	x 2	build build	aplibtool.c jlibtool.c	753:774 1940:1961	view
15	x 2	poll/unix poll/unix	port.c poll.c	44:62 47:65	view
13	x 3	crypto crypto crypto	apr_crypto_commoncrypto.c apr_crypto_openssl.c apr_crypto_nss.c	1421:1437 1717:1733 1605:1621	view
11	x 2	network_io/win32 network_io/os2	sockets.c sockets.c	68:84 58:74	view
10	x 2	threadproc/netware threadproc/unix	procsup.c procsup.c	88:99 91:102	view
9	x 2	poll/unix poll/unix	port.c poll.c	29:42 32:45	view
8	x 2	file_io/win32 file_io/unix	readwrite.c printf.c	777:788 31:42	view
8	x 2	crypto crypto	apr_md4.c apr_md5.c	386:396 461:471	view
7	x 2	dbd dbd/unsupported	apr_dbd_pgsql.c apr_dbd_freetds.c	1271:1279 678:686	view