apache / harmony-drlvmDuplication

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

10% duplication:

226,588 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
23,129 duplicated lines

2,837 duplicates

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

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 2,837 duplicates...

Size	#	Folders	Files	Lines	Code
796	x 2	vm/vmcore/src/util/ipf/code_emit vm/vmcore/src/util/ipf/code_emit	sched_enums.h sched_enums.h	28:824 (17%) 1627:2423 (17%)	view
795	x 2	vm/vmcore/src/util/ipf/code_emit vm/vmcore/src/util/ipf/code_emit	sched_enums.h sched_enums.h	826:1620 (17%) 2430:3224 (17%)	view
172	x 2	vm/interpreter/src vm/vmcore/src/util/ipf/base	invokeJNI_ipf.asm invoke_native_stub_ipf.asm	51:230 (78%) 39:218 (83%)	view
144	x 2	vm/port/src/disasm/linux vm/port/src/disasm/win	disasm.c disasm.c	48:291 (100%) 48:291 (100%)	view
90	x 2	vm/jitrino/src/codegenerator/ipf vm/jitrino/src/codegenerator/ipf	IpfEncoder.cpp IpfVerifier.cpp	1404:1499 (6%) 742:837 (10%)	view
89	x 2	vm/jitrino/src/optimizer vm/jitrino/src/optimizer	reassociate.cpp reassociate.cpp	425:533 (13%) 696:807 (13%)	view
72	x 2	vm/gc_gen/src/semi_space vm/gc_gen/src/trace_forward	sspace_nongen_ss_pool.cpp fspace_nongen_forward_pool.cpp	137:272 (48%) 129:263 (53%)	view
56	x 2	vm/interpreter/src vm/interpreter/src	interp_native_ipf.cpp interp_native_ipf.cpp	440:525 (10%) 708:793 (10%)	view
56	x 2	vm/port/src/signals/linux vm/port/src/signals/win	signals_ia32.cpp signals_ia32.cpp	23:104 (100%) 45:126 (67%)	view
55	x 2	vm/interpreter/src vm/interpreter/src	interp_native_ia32.cpp interp_native_ia32.cpp	380:464 (11%) 602:686 (11%)	view
55	x 2	vm/interpreter/src vm/interpreter/src	interp_native_em64t.cpp interp_native_em64t.cpp	466:550 (9%) 745:829 (9%)	view
53	x 2	vm/vmcore/src/kernel_cla...ony/lang/reflect/parser vm/vmcore/src/kernel_cla...ony/lang/reflect/parser	Parser.java Parser.java	201:261 (8%) 657:717 (8%)	view
51	x 2	vm/interpreter/src vm/interpreter/src	interp_native_em64t.cpp interp_native_em64t.cpp	357:430 (9%) 639:708 (9%)	view
46	x 2	vm/gc_gen/src/semi_space vm/gc_gen/src/trace_forward	sspace_gen_ss_pool.cpp fspace_gen_forward_pool.cpp	163:247 (30%) 204:289 (25%)	view
44	x 2	vm/vmcore/src/class_support vm/vmcore/src/class_support	Class_File_Loader.cpp Class_File_Loader.cpp	918:989 (1%) 2018:2087 (1%)	view
35	x 2	vm/gc_gen/src/common vm/gc_gen/src/mark_compact	mark_scan_pool.cpp space_tune_mark_scan.cpp	42:108 (39%) 50:116 (34%)	view
35	x 2	vm/jitrino/src/optimizer vm/jitrino/src/optimizer	codelowerer.cpp codelowerer.cpp	243:301 (4%) 532:590 (4%)	view
34	x 2	vm/vmcore/src/ncai/utils vm/vmcore/src/ncai/utils	ncai_utils_em64t.cpp ncai_utils_ia32.cpp	246:304 (15%) 207:264 (19%)	view
33	x 2	vm/vmcore/src/ncai/utils vm/vmcore/src/ncai/utils	ncai_utils_ia32.cpp ncai_utils_ipf.cpp	213:264 (18%) 220:271 (18%)	view
33	x 2	vm/vmcore/src/ncai/utils vm/vmcore/src/ncai/utils	ncai_utils_em64t.cpp ncai_utils_ipf.cpp	253:304 (15%) 220:271 (18%)	view
30	x 2	vm/vmcore/src/jit vm/vmcore/src/jit	jit_runtime_support.cpp jit_runtime_support.cpp	1092:1131 (1%) 1150:1190 (1%)	view
29	x 2	vm/interpreter/src vm/interpreter/src	interpreter.cpp interpreter.cpp	3275:3311 (1%) 3363:3399 (1%)	view
29	x 2	vm/interpreter/src vm/interpreter/src	interpreter.cpp interpreter.cpp	3275:3311 (1%) 3552:3587 (1%)	view
29	x 2	vm/interpreter/src vm/interpreter/src	interp_native_ia32.cpp interp_native_ia32.cpp	307:347 (6%) 528:568 (6%)	view
29	x 2	vm/interpreter/src vm/interpreter/src	interpreter.cpp interpreter.cpp	3363:3399 (1%) 3552:3587 (1%)	view
29	x 2	vm/interpreter/src vm/interpreter/src	interp_native_ipf.cpp interp_native_ipf.cpp	401:437 (5%) 668:705 (5%)	view
29	x 2	vm/port/include/tl vm/port/include/tl	set.h set_mt.h	92:129 (39%) 145:182 (27%)	view
28	x 2	vm/port/src/signals/linux vm/port/src/signals/linux	signals_common.cpp signals_ipf.cpp	154:202 (15%) 83:131 (18%)	view
28	x 2	vm/port/src/file_io/linux vm/port/src/file_io/win	canonical.c canonical.c	39:75 (75%) 42:74 (71%)	view
27	x 2	vm/gc_gen/src/mark_sweep vm/gc_gen/src/mark_sweep	wspace_mark_mostly_concurrent.cpp wspace_mark_mostly_concurrent.cpp	158:200 (14%) 281:321 (14%)	view
25	x 2	vm/gc_gen/src/mark_sweep vm/gc_gen/src/mark_sweep	wspace_mark_mostly_concurrent.cpp wspace_mark_otf_concurrent.cpp	45:89 (13%) 45:90 (19%)	view
25	x 2	vm/jitrino/src/codegenerator/ia32 vm/jitrino/src/codegenerator/ia32	Ia32GlobalPropagation.cpp Ia32GlobalPropagation.cpp	210:249 (8%) 479:518 (8%)	view
25	x 2	vm/vmcore/src/util/ipf/code_emit vm/vmcore/src/util/ipf/code_emit	merced.cpp merced.cpp	1827:1852 (1%) 1878:1903 (1%)	view
25	x 2	vm/gc_gen/src/semi_space vm/gc_gen/src/trace_forward	sspace_nongen_ss_pool.cpp fspace_nongen_forward_pool.cpp	31:88 (17%) 35:92 (18%)	view
25	x 2	vm/vmcore/src/jvmti vm/vmcore/src/jvmti	jvmti_watch.cpp jvmti_watch.cpp	58:99 (15%) 167:208 (15%)	view
24	x 2	vm/vmcore/src/kernel_cla...lang/reflect/repository vm/vmcore/src/kernel_cla...lang/reflect/repository	ParameterizedTypeRepository.java WildcardTypeRepository.java	92:122 (20%) 91:121 (20%)	view
24	x 2	vm/jitrino/src/optimizer vm/jitrino/src/optimizer	syncopt.cpp syncopt.cpp	917:943 (1%) 1040:1066 (1%)	view
24	x 2	vm/gc_gen/src/semi_space vm/gc_gen/src/trace_forward	sspace_nongen_ss_pool.cpp fspace_gen_forward_pool.cpp	144:188 (16%) 203:248 (13%)	view
24	x 2	vm/gc_gen/src/trace_forward vm/gc_gen/src/trace_forward	fspace_gen_forward_pool.cpp fspace_nongen_forward_pool.cpp	203:248 (13%) 135:179 (17%)	view
24	x 2	vm/gc_gen/src/common vm/gc_gen/src/mark_compact	gc_space.h mspace.h	87:125 (32%) 30:67 (63%)	view
24	x 2	vm/gc_gen/src/common vm/gc_gen/src/semi_space	gc_space.h sspace.h	87:125 (32%) 27:65 (34%)	view
24	x 2	vm/vmcore/src/exception vm/vmcore/src/exception	exceptions_jit.cpp exceptions_jit.cpp	634:673 (3%) 681:722 (3%)	view
24	x 2	vm/interpreter/src vm/interpreter/src	interp_native_em64t.cpp interp_native_em64t.cpp	433:463 (4%) 711:742 (4%)	view
24	x 2	vm/vmcore/src/util/ipf/code_emit vm/vmcore/src/util/ipf/code_emit	merced.cpp merced.cpp	959:985 (1%) 1103:1129 (1%)	view
24	x 2	vm/vmcore/src/jvmti vm/vmcore/src/jvmti	jvmti_capability.cpp jvmti_capability.cpp	78:101 (8%) 117:140 (8%)	view
24	x 2	vm/vmcore/src/jvmti vm/vmcore/src/jvmti	jvmti_capability.cpp jvmti_capability.cpp	39:62 (8%) 117:140 (8%)	view
24	x 2	vm/vmcore/src/jvmti vm/vmcore/src/jvmti	jvmti_capability.cpp jvmti_capability.cpp	39:62 (8%) 78:101 (8%)	view
24	x 2	vm/gc_gen/src/common vm/gc_gen/src/mark_compact	mark_scan_pool.cpp space_tune_mark_scan.cpp	168:214 (27%) 187:233 (23%)	view
24	x 2	vm/gc_gen/src/mark_compact vm/gc_gen/src/semi_space	mspace.h sspace.h	30:67 (63%) 27:65 (34%)	view
23	x 2	vm/port/src/thread/linux vm/port/src/thread/win	thread_os.c thread_os.c	263:307 (4%) 180:224 (5%)	view

Duplicated Units

The list of top 25 duplicated units.

See data for all 25 unit duplicates...

Size	#	Folders	Files	Lines	Code
67	x 2	vm/gc_gen/src/trace_forward vm/gc_gen/src/semi_space	fspace_nongen_forward_pool.cpp sspace_nongen_ss_pool.cpp	164:264 173:273	view
32	x 2	vm/gc_gen/src/semi_space vm/gc_gen/src/semi_space	sspace_nongen_ss_pool.cpp sspace_gen_ss_pool.cpp	275:316 297:340	view
31	x 2	vm/gc_gen/src/common vm/gc_gen/src/mark_compact	mark_scan_pool.cpp space_tune_mark_scan.cpp	45:90 53:98	view
31	x 2	vm/port/src/signals/win vm/port/src/signals/linux	signals_ia32.cpp signals_ia32.cpp	86:127 64:105	view
30	x 2	vm/vmcore/src/kernel_cla...lang/reflect/repository vm/vmcore/src/kernel_cla...lang/reflect/repository	ParameterizedTypeRepository.java WildcardTypeRepository.java	91:123 90:122	view
29	x 2	vm/gc_gen/src/trace_forward vm/gc_gen/src/trace_forward	fspace_nongen_forward_pool.cpp fspace_gen_forward_pool.cpp	266:303 339:378	view
28	x 2	vm/port/src/signals/win vm/port/src/signals/linux	signals_ia32.cpp signals_ia32.cpp	48:84 26:62	view
27	x 2	vm/port/src/disasm/win vm/port/src/disasm/linux	disasm.c disasm.c	114:150 114:150	view
23	x 2	vm/gc_gen/src/trace_forward vm/gc_gen/src/semi_space	fspace_nongen_forward_pool.cpp sspace_nongen_ss_pool.cpp	43:78 39:74	view
20	x 2	vm/port/src/disasm/win vm/port/src/disasm/linux	disasm.c disasm.c	67:89 67:89	view
20	x 2	vm/port/src/crash_handler/ia32 vm/port/src/crash_handler/em64t	native_unwind_arch.cpp native_unwind_arch.cpp	46:71 46:71	view
19	x 2	vm/port/src/disasm/win vm/port/src/disasm/linux	disasm.c disasm.c	91:112 91:112	view
17	x 4	vm/gc_gen/src/trace_forward vm/gc_gen/src/trace_forward vm/gc_gen/src/semi_space vm/gc_gen/src/semi_space	fspace_nongen_forward_pool.cpp fspace_gen_forward_pool.cpp sspace_nongen_ss_pool.cpp sspace_gen_ss_pool.cpp	139:159 207:228 148:168 166:186	view
14	x 3	vm/vmcore/src/ncai/utils vm/vmcore/src/ncai/utils vm/vmcore/src/ncai/utils	ncai_utils_em64t.cpp ncai_utils_ia32.cpp ncai_utils_ipf.cpp	272:293 232:253 239:260	view
13	x 2	vm/port/src/signals/linux vm/port/src/signals/linux	signals_common.cpp signals_ipf.cpp	37:55 41:59	view
12	x 3	vm/vmcore/src/ncai/utils vm/vmcore/src/ncai/utils vm/vmcore/src/ncai/utils	ncai_utils_em64t.cpp ncai_utils_ia32.cpp ncai_utils_ipf.cpp	253:270 213:230 220:237	view
12	x 2	vm/vmcore/src/thread/helpers vm/vmcore/src/thread/helpers	thread_helpers_ia32.cpp thread_helpers_em64t.cpp	158:176 160:178	view
10	x 2	vm/gc_gen/src/mark_sweep vm/gc_gen/src/mark_sweep	wspace_mark_otf_concurrent.cpp wspace_mark_mostly_concurrent.cpp	78:92 79:91	view
9	x 2	vm/gc_gen/src/common vm/gc_gen/src/mark_compact	mark_scan_pool.cpp space_tune_mark_scan.cpp	93:105 101:113	view
8	x 2	vm/gc_gen/src/mark_sweep vm/gc_gen/src/mark_sweep	wspace_mark_otf_concurrent.cpp wspace_mark_mostly_concurrent.cpp	27:37 29:39	view
7	x 3	vm/vmcore/src/util/ipf/base vm/vmcore/src/util/ia32/base vm/vmcore/src/jit	jit_runtime_support_ipf.cpp jit_runtime_support_ia32.cpp jit_runtime_support.cpp	1025:1033 201:209 704:712	view
6	x 2	vm/vmcore/src/util vm/port/src/crash_handler	crash_dump.cpp stack_dump.cpp	446:454 36:44	view
6	x 3	vm/vmcore/src/util/em64t/base vm/vmcore/src/lil/ia32 vm/vmcore/src/lil/em64t	jit_runtime_support_em64t.cpp m2n_ia32.cpp m2n_em64t.cpp	231:240 254:263 357:366	view
6	x 2	vm/vmcore/src/lil/ia32 vm/vmcore/src/lil/em64t	m2n_ia32.cpp m2n_em64t.cpp	243:252 346:355	view
6	x 2	vm/gc_gen/src/trace_forward vm/gc_gen/src/semi_space	fspace_gen_forward_pool.cpp sspace_gen_ss_pool.cpp	38:49 33:44	view