apache / brpc - 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

10% duplication:

110,322 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
11,399 duplicated lines

2,150 duplicates

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

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

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From Component --> To Component	Duplicated Lines	File Pairs	Details
example (6%) --> src (<1%)	683	399 file pairs	details...
example (4%) --> tools (11%)	466	32 file pairs	details...
src (<1%) --> tools (8%)	341	19 file pairs	details...

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Longest Duplicates

The list of 50 longest duplicates.

See data for all 2,150 duplicates...

Size	#	Folders	Files	Lines	Code
97	x 2	example/dynamic_partition_echo_c++ example/partition_echo_c++	server.cpp server.cpp	32:172 (97%) 32:172 (97%)	view
65	x 2	example/partition_echo_c++ example/selective_echo_c++	server.cpp server.cpp	36:129 (65%) 35:128 (65%)	view
65	x 2	example/dynamic_partition_echo_c++ example/selective_echo_c++	server.cpp server.cpp	36:129 (65%) 35:128 (65%)	view
53	x 2	tools/rpc_press tools/rpc_replay	info_thread.cpp info_thread.cpp	61:127 (61%) 61:127 (61%)	view
49	x 2	src/brpc/details src/brpc/details	mesalink_ssl_helper.cpp ssl_helper.cpp	135:203 (20%) 247:316 (8%)	view
47	x 2	example/dynamic_partition_echo_c++ example/partition_echo_c++	client.cpp client.cpp	31:103 (37%) 32:104 (36%)	view
41	x 2	src/butil src/butil	ssl_compat.h ssl_compat.h	375:415 (10%) 425:465 (10%)	view
40	x 2	example/dynamic_partition_echo_c++ example/multi_threaded_echo_fns_c++	server.cpp server.cpp	31:75 (40%) 32:76 (37%)	view
40	x 2	example/echo_c++ example/rpcz_echo_c++	client.cpp client.cpp	26:90 (100%) 29:94 (95%)	view
39	x 2	example/multi_threaded_echo_fns_c++ example/partition_echo_c++	server.cpp server.cpp	33:76 (36%) 32:75 (39%)	view
38	x 2	example/dynamic_partition_echo_c++ example/partition_echo_c++	client.cpp client.cpp	141:188 (29%) 143:190 (29%)	view
35	x 2	example/multi_threaded_echo_fns_c++ example/selective_echo_c++	server.cpp server.cpp	37:76 (32%) 35:74 (35%)	view
35	x 2	src/mcpack2pb src/mcpack2pb	parser.cpp serializer.cpp	38:76 (7%) 40:78 (5%)	view
33	x 2	src/brpc/details src/brpc/details	mesalink_ssl_helper.cpp ssl_helper.cpp	73:116 (13%) 82:125 (5%)	view
33	x 2	example/selective_echo_c++ example/session_data_and_thread_local	client.cpp client.cpp	191:239 (23%) 102:150 (41%)	view
33	x 2	example/nshead_extension_c++ example/nshead_pb_extension_c++	client.cpp client.cpp	29:81 (100%) 29:81 (100%)	view
32	x 2	tools/rpc_press tools/rpc_replay	info_thread.cpp info_thread.cpp	20:59 (37%) 20:59 (37%)	view
32	x 2	example/multi_threaded_echo_c++ example/thrift_extension_c++	client.cpp client2.cpp	112:158 (38%) 100:146 (43%)	view
30	x 2	src/bthread src/bthread	context.cpp context.cpp	344:373 (3%) 414:443 (3%)	view
29	x 2	src/bthread src/bthread	context.cpp context.cpp	266:294 (3%) 478:506 (3%)	view
29	x 2	src/bthread src/bthread	task_group.cpp task_group.cpp	439:470 (4%) 499:530 (4%)	view
28	x 2	example/echo_c++ example/streaming_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/asynchronous_echo_c++ example/selective_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/asynchronous_echo_c++ example/session_data_and_thread_local	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/asynchronous_echo_c++ example/nshead_pb_extension_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/asynchronous_echo_c++ example/streaming_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/dynamic_partition_echo_c++ example/session_data_and_thread_local	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/selective_echo_c++ example/streaming_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/baidu_proxy_and_generic_call example/selective_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/rpcz_echo_c++ example/session_data_and_thread_local	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/partition_echo_c++ example/streaming_batch_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/streaming_batch_echo_c++ example/streaming_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/echo_c++ example/selective_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/selective_echo_c++ example/session_data_and_thread_local	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/echo_c++ example/streaming_batch_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/cancel_c++ example/selective_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/cancel_c++ example/partition_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/rpcz_echo_c++ example/streaming_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/dynamic_partition_echo_c++ example/nshead_pb_extension_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/cancel_c++ example/streaming_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/cancel_c++ example/streaming_batch_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/echo_c++ example/rpcz_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/dynamic_partition_echo_c++ example/streaming_batch_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/partition_echo_c++ example/streaming_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/dynamic_partition_echo_c++ example/partition_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/dynamic_partition_echo_c++ example/selective_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/multi_threaded_echo_fns_c++ example/parallel_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/asynchronous_echo_c++ example/streaming_batch_echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/asynchronous_echo_c++ example/echo_c++	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view
28	x 2	example/echo_c++ example/session_data_and_thread_local	proto echo.proto echo.proto	1:33 (100%) 1:33 (100%)	view

Duplicated Units

The list of top 36 duplicated units.

See data for all 36 unit duplicates...

Size	#	Folders	Files	Lines	Code
58	x 2	tools/rpc_replay tools/rpc_press	info_thread.cpp info_thread.cpp	34:95 34:95	view
57	x 3	example/dynamic_partition_echo_c++ example/partition_echo_c++ example/selective_echo_c++	server.cpp server.cpp server.cpp	95:173 95:173 94:172	view
34	x 2	example/rpcz_echo_c++ example/echo_c++	client.cpp client.cpp	38:95 35:91	view
31	x 3	example/dynamic_partition_echo_c++ example/partition_echo_c++ example/selective_echo_c++	server.cpp server.cpp server.cpp	51:85 51:85 50:84	view
30	x 2	example/nshead_pb_extension_c++ example/nshead_extension_c++	client.cpp client.cpp	36:82 36:82	view
28	x 2	src/brpc/builtin src/butil	common.cpp logging.cc	52:84 1705:1737	view
25	x 2	example/baidu_proxy_and_generic_call example/echo_c++	server.cpp server.cpp	79:118 95:134	view
21	x 2	src/brpc/details src/brpc/details	mesalink_ssl_helper.cpp ssl_helper.cpp	347:385 621:659	view
19	x 2	src/brpc src/mcpack2pb	amf_inl.h parser-inl.h	27:47 49:69	view
18	x 2	src/brpc/policy src/brpc/policy	nshead_protocol.cpp thrift_protocol.cpp	425:451 737:763	view
17	x 2	src/bvar src/butil	variable.cpp logging.cc	339:358 1128:1147	view
17	x 2	example/auto_concurrency_limiter example/auto_concurrency_limiter	server.cpp client.cpp	57:75 42:60	view
16	x 2	src/brpc/policy src/brpc/policy	weighted_randomized_load_balancer.cpp weighted_round_robin_load_balancer.cpp	154:171 256:273	view
16	x 3	src/brpc/policy src/brpc/policy src/brpc/policy	randomized_load_balancer.cpp round_robin_load_balancer.cpp dynpart_load_balancer.cpp	157:174 157:174 165:182	view
15	x 2	src/brpc/builtin src/brpc/builtin	hotspots_service.cpp pprof_service.cpp	310:329 74:94	view
15	x 2	src/butil/threading src/butil/threading	platform_thread_linux.cc platform_thread_freebsd.cc	78:100 63:85	view
13	x 2	tools/rpc_replay tools/rpc_press	info_thread.cpp info_thread.cpp	102:116 102:116	view
13	x 2	src/butil/threading src/butil/threading	platform_thread_linux.cc platform_thread_freebsd.cc	29:43 29:43	view
12	x 2	example/thrift_extension_c++ example/thrift_extension_c++	server2.cpp server.cpp	84:104 61:81	view
11	x 2	src/brpc/policy src/brpc/policy	nova_pbrpc_protocol.cpp public_pbrpc_protocol.cpp	73:85 101:113	view
11	x 2	src/butil src/butil	comlog_sink.cc logging.cc	167:181 216:230	view
10	x 3	src/brpc/policy src/brpc/policy src/brpc/policy	randomized_load_balancer.cpp round_robin_load_balancer.cpp dynpart_load_balancer.cpp	36:47 36:47 34:45	view
10	x 2	src/brpc/policy src/brpc/policy	randomized_load_balancer.cpp dynpart_load_balancer.cpp	49:60 47:58	view
9	x 2	tools/rpc_replay tools/rpc_press	info_thread.cpp info_thread.cpp	118:128 118:128	view
8	x 2	src/bvar src/bvar/detail	collector.cpp sampler.cpp	45:54 36:45	view
8	x 2	src/bvar/detail src/butil/containers	agent_group.h doubly_buffered_data.h	161:170 260:269	view
8	x 2	src/brpc/policy src/brpc/policy	nova_pbrpc_protocol.cpp public_pbrpc_protocol.cpp	154:163 216:225	view
8	x 2	example/streaming_batch_echo_c++ example/streaming_echo_c++	client.cpp server.cpp	34:43 33:42	view
8	x 3	example/asynchronous_echo_c++ example/http_c++ example/echo_c++	server.cpp http_server.cpp server.cpp	75:85 71:81 81:91	view
7	x 4	src/bvar src/bvar src/bvar src/bvar	reducer.h window.h status.h passive_status.h	153:161 127:135 145:153 154:162	view
6	x 5	src/brpc/policy src/brpc/policy src/brpc/policy src/brpc/policy src/brpc/policy	weighted_randomized_load_balancer.cpp randomized_load_balancer.cpp weighted_round_robin_load_balancer.cpp round_robin_load_balancer.cpp dynpart_load_balancer.cpp	81:88 62:69 115:122 62:69 60:67	view
6	x 5	src/brpc/policy src/brpc/policy src/brpc/policy src/brpc/policy src/brpc/policy	weighted_randomized_load_balancer.cpp randomized_load_balancer.cpp weighted_round_robin_load_balancer.cpp round_robin_load_balancer.cpp dynpart_load_balancer.cpp	90:97 71:78 124:131 71:78 69:76	view
6	x 2	src/brpc/policy src/brpc/policy	nshead_protocol.cpp thrift_protocol.cpp	393:400 649:656	view
6	x 4	src/brpc/policy src/brpc/policy src/brpc/policy src/brpc/policy	randomized_load_balancer.cpp weighted_round_robin_load_balancer.cpp round_robin_load_balancer.cpp dynpart_load_balancer.cpp	88:95 141:148 88:95 86:93	view
6	x 2	src/brpc/details src/brpc/details	mesalink_ssl_helper.cpp ssl_helper.cpp	39:46 46:53	view
6	x 2	src/butil src/butil	resource_pool_inl.h object_pool_inl.h	297:304 295:302	view