mozilla / mozjpeg - 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.

Learn more...

Duplication Overall

43% duplication:

94,213 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
41,137 duplicated lines

87,216 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
ROOT (<1%) --> simd (<1%)	199	18 file pairs	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 87,216 duplicates...

Size	#	Folders	Files	Lines	Code
389	x 2	simd/arm/aarch32 simd/arm/aarch64	jsimd.c jsimd.c	325:925 (62%) 390:990 (58%)	view
167	x 2	simd/mips64 simd/mips64	jccolext-mmi.c jcgryext-mmi.c	123:339 (60%) 114:326 (78%)	view
144	x 2	simd/i386 simd/i386	jidctflt-sse.asm jidctflt-sse2.asm	260:438 (31%) 222:400 (36%)	view
111	x 2	simd/i386 simd/x86_64	jidctint-avx2.asm jidctint-avx2.asm	6:131 (29%) 7:132 (32%)	view
102	x 2	simd/i386 simd/x86_64	jfdctint-avx2.asm jfdctint-avx2.asm	3:119 (37%) 3:119 (38%)	view
94	x 2	simd/i386 simd/i386	jccolext-avx2.asm jcgryext-avx2.asm	161:270 (19%) 153:262 (24%)	view
94	x 2	simd/x86_64 simd/x86_64	jccolext-avx2.asm jcgryext-avx2.asm	149:258 (19%) 141:250 (25%)	view
86	x 2	ROOT ROOT	jcparam.c rdswitch.c	94:204 (14%) 309:419 (22%)	view
84	x 2	simd/i386 simd/x86_64	jccolext-avx2.asm jccolext-avx2.asm	285:386 (17%) 272:373 (17%)	view
82	x 2	simd/i386 simd/x86_64	jfdctint-sse2.asm jfdctint-sse2.asm	141:239 (15%) 135:233 (15%)	view
80	x 2	simd/i386 simd/x86_64	jdmrgext-avx2.asm jdmrgext-avx2.asm	178:272 (16%) 167:261 (15%)	view
80	x 2	simd/i386 simd/i386	jidctint-mmx.asm jidctint-mmx.asm	265:357 (11%) 591:683 (11%)	view
79	x 2	simd/i386 simd/x86_64	jdmerge-avx2.asm jdmerge-avx2.asm	48:132 (68%) 48:132 (68%)	view
79	x 2	simd/i386 simd/x86_64	jdmerge-sse2.asm jdmerge-sse2.asm	47:131 (69%) 47:131 (69%)	view
77	x 2	simd/x86_64 simd/x86_64	jdcolext-avx2.asm jdmrgext-avx2.asm	189:277 (17%) 191:279 (15%)	view
77	x 2	simd/i386 simd/i386	jdcolext-avx2.asm jdmrgext-avx2.asm	199:287 (17%) 202:290 (15%)	view
77	x 2	simd/i386 simd/x86_64	jdcolext-avx2.asm jdcolext-avx2.asm	179:269 (17%) 169:259 (17%)	view
76	x 2	simd/i386 simd/x86_64	jfdctint-sse2.asm jfdctint-sse2.asm	369:461 (14%) 361:453 (14%)	view
75	x 2	simd/i386 simd/i386	jfdctfst-mmx.asm jfdctint-mmx.asm	80:171 (23%) 101:192 (14%)	view
74	x 2	simd/i386 simd/x86_64	jcgryext-avx2.asm jcgryext-avx2.asm	277:367 (19%) 264:354 (20%)	view
73	x 2	simd/i386 simd/x86_64	jidctred-sse2.asm jidctred-sse2.asm	6:89 (15%) 8:91 (16%)	view
73	x 2	simd/i386 simd/x86_64	jfdctfst-sse2.asm jfdctfst-sse2.asm	245:333 (22%) 237:325 (23%)	view
70	x 2	ROOT ROOT	jcparam.c rdswitch.c	201:292 (11%) 416:507 (17%)	view
69	x 2	simd/i386 simd/x86_64	jidctfst-sse2.asm jidctfst-sse2.asm	233:317 (16%) 227:311 (17%)	view
69	x 2	simd/i386 simd/x86_64	jcgryext-avx2.asm jcgryext-avx2.asm	152:236 (17%) 140:224 (18%)	view
69	x 2	simd/i386 simd/x86_64	jccolext-avx2.asm jccolext-avx2.asm	160:244 (14%) 148:232 (14%)	view
68	x 2	simd/i386 simd/x86_64	jcgryext-avx2.asm jccolext-avx2.asm	153:236 (17%) 149:232 (14%)	view
68	x 2	simd/i386 simd/x86_64	jccolext-avx2.asm jcgryext-avx2.asm	161:244 (13%) 141:224 (18%)	view
67	x 2	simd/i386 simd/x86_64	jccolext-avx2.asm jcgryext-avx2.asm	286:368 (13%) 265:347 (18%)	view
67	x 2	simd/x86_64 simd/x86_64	jdcolext-avx2.asm jdmrgext-avx2.asm	343:417 (15%) 348:422 (13%)	view
67	x 2	simd/i386 simd/i386	jdcolext-avx2.asm jdmrgext-avx2.asm	354:428 (14%) 360:434 (13%)	view
67	x 2	simd/i386 simd/x86_64	jcgryext-avx2.asm jccolext-avx2.asm	278:360 (17%) 273:355 (14%)	view
67	x 2	simd/i386 simd/i386	jccolext-avx2.asm jcgryext-avx2.asm	286:368 (13%) 278:360 (17%)	view
67	x 2	simd/arm/aarch64 simd/arm/aarch64	jccolext-neon.c jccolext-neon.c	72:153 (34%) 171:252 (34%)	view
67	x 2	simd/x86_64 simd/x86_64	jccolext-avx2.asm jcgryext-avx2.asm	273:355 (14%) 265:347 (18%)	view
66	x 2	simd/i386 simd/x86_64	jidctint-sse2.asm jidctint-sse2.asm	6:82 (9%) 8:84 (9%)	view
66	x 2	simd/i386 simd/x86_64	jfdctint-sse2.asm jfdctint-sse2.asm	6:82 (12%) 7:83 (12%)	view
65	x 2	simd/powerpc simd/powerpc	jdcolext-altivec.c jdmrgext-altivec.c	155:268 (43%) 184:297 (34%)	view
65	x 2	simd/i386 simd/i386	jfdctfst-mmx.asm jfdctint-mmx.asm	232:312 (20%) 354:434 (12%)	view
64	x 2	ROOT ROOT	jcmaster.c jstdhuff.c	61:127 (9%) 60:126 (64%)	view
63	x 2	simd/i386 simd/x86_64	jfdctfst-sse2.asm jfdctfst-sse2.asm	120:195 (19%) 114:189 (20%)	view
61	x 2	simd/i386 simd/x86_64	jccolor-avx2.asm jccolor-avx2.asm	51:117 (61%) 51:117 (61%)	view
61	x 2	simd/i386 simd/i386	jdcolext-avx2.asm jdmrgext-avx2.asm	291:352 (13%) 297:358 (12%)	view
61	x 2	simd/i386 simd/x86_64	jcgray-sse2.asm jcgray-sse2.asm	42:108 (67%) 42:108 (67%)	view
61	x 2	simd/i386 simd/x86_64	jccolor-sse2.asm jccolor-sse2.asm	50:116 (61%) 50:116 (61%)	view
61	x 2	simd/i386 simd/x86_64	jdcolor-avx2.asm jdcolor-avx2.asm	48:114 (62%) 48:114 (62%)	view
61	x 2	simd/i386 simd/x86_64	jcgray-avx2.asm jcgray-avx2.asm	43:109 (66%) 43:109 (66%)	view
61	x 2	simd/i386 simd/x86_64	jdmrgext-avx2.asm jdcolext-avx2.asm	202:272 (12%) 189:259 (14%)	view
61	x 2	simd/i386 simd/x86_64	jdcolext-avx2.asm jdmrgext-avx2.asm	199:269 (13%) 191:261 (11%)	view
61	x 2	simd/i386 simd/x86_64	jdcolor-sse2.asm jdcolor-sse2.asm	47:113 (63%) 47:113 (63%)	view

Duplicated Units

The list of top 2 duplicated units.

See data for all 2 unit duplicates...

Size	#	Folders	Files	Lines	Code
7	x 2	ROOT ROOT	tjexample.c tjbench.c	83:93 160:169	view
6	x 2	java/org/libjpegturbo/turbojpeg java/org/libjpegturbo/turbojpeg	TJCompressor.java TJDecompressor.java	655:662 1096:1103	view