awslabs / aws-c-common
Duplication

Places in code with 6 or more lines that are exactly the same.

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
  • 11% duplication:
    • 17,857 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 2,127 duplicated lines
  • 212 duplicates
system11% (2,127 lines)
Duplication per Extension
c12% (1,470 lines)
inl19% (435 lines)
h7% (192 lines)
cmake3% (30 lines)
Duplication per Component (primary)
verification/cbmc/proofs24% (685 lines)
include/aws/common11% (496 lines)
source5% (354 lines)
source/posix18% (159 lines)
verification/cbmc/stubs24% (137 lines)
include/aws/testing37% (131 lines)
source/windows14% (129 lines)
cmake3% (30 lines)
source/android7% (6 lines)
source/arch/generic0% (0 lines)
source/arch/intel0% (0 lines)
source/arch/arm0% (0 lines)
AWSCRTAndroidTestRunner/app/src0% (0 lines)
verification/cbmc/sources0% (0 lines)
verification/cbmc/uninline0% (0 lines)
verification/cbmc/include0% (0 lines)

Duplication Between Components (50+ lines)

G source/posix source/posix source/windows source/windows source/posix--source/windows 234 include/aws/common include/aws/common source source include/aws/common--source 76

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Longest Duplicates
The list of 20 longest duplicates.
See data for all 212 duplicates...
Size#FoldersFilesLinesCode
36 x 2 include/aws/common/private
include/aws/common/private
inl
lookup3.inl
lookup3.inl
 395:437 (6%)
589:631 (6%)
 view
32 x 2 include/aws/common/private
include/aws/common/private
inl
lookup3.inl
lookup3.inl
 441:479 (5%)
635:673 (5%)
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23 x 2 include/aws/common/private
include/aws/common/private
inl
lookup3.inl
lookup3.inl
 320:367 (4%)
513:560 (4%)
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22 x 2 source/posix
source/windows
file.c
file.c
 63:100 (15%)
97:134 (7%)
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21 x 2 include/aws/testing
include/aws/testing
aws_test_harness.h
aws_test_harness.h
 276:296 (5%)
317:337 (5%)
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17 x 2 verification/cbmc/proofs/aws_array_eq
verification/cbmc/proofs/aws_array_eq_ignore_case
aws_array_eq_harness.c
aws_array_eq_ignore_case_harness.c
 11:33 (65%)
11:33 (70%)
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17 x 2 verification/cbmc/proofs/aws_byte_buf_eq
verification/cbmc/proofs...byte_buf_eq_ignore_case
aws_byte_buf_eq_harness.c
aws_byte_buf_eq_ignore_case_harness.c
 11:32 (65%)
11:32 (70%)
 view
17 x 2 verification/cbmc/proofs/aws_byte_cursor_eq
verification/cbmc/proofs...e_cursor_eq_ignore_case
aws_byte_cursor_eq_harness.c
aws_byte_cursor_eq_ignore_case_harness.c
 11:32 (60%)
11:32 (65%)
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15 x 2 verification/cbmc/proofs...e_cursor_compare_lookup
verification/cbmc/proofs...e_cursor_eq_ignore_case
aws_byte_cursor_compare_lookup_harness.c
aws_byte_cursor_eq_ignore_case_harness.c
 20:37 (53%)
15:32 (57%)
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15 x 2 cmake
cmake
cmake
AwsTestHarness.cmake
AwsTestHarness.cmake
 53:69 (19%)
78:94 (19%)
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15 x 2 verification/cbmc/proofs...e_cursor_compare_lookup
verification/cbmc/proofs/aws_byte_cursor_eq
aws_byte_cursor_compare_lookup_harness.c
aws_byte_cursor_eq_harness.c
 20:37 (53%)
15:32 (53%)
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14 x 2 include/aws/common/private
include/aws/common/private
inl
lookup3.inl
lookup3.inl
 214:232 (2%)
260:278 (2%)
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14 x 2 verification/cbmc/proofs...byte_cursor_eq_byte_buf
verification/cbmc/proofs...eq_byte_buf_ignore_case
aws_byte_cursor_eq_byte_buf_harness.c
aws_byte_cursor_eq_byte_buf_ignore_ca...
 11:28 (58%)
11:28 (63%)
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14 x 2 verification/cbmc/proofs/aws_byte_cursor_advance
verification/cbmc/proofs...e_cursor_advance_nospec
aws_byte_cursor_advance_harness.c
aws_byte_cursor_advance_nospec_harness.c
 29:44 (56%)
29:44 (56%)
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14 x 2 include/aws/common/private
include/aws/common/private
inl
lookup3.inl
lookup3.inl
 375:389 (2%)
569:583 (2%)
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13 x 2 source/posix
source/windows
environment.c
environment.c
 11:30 (65%)
11:40 (61%)
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13 x 2 source/posix
source/windows
thread.c
thread.c
 52:66 (6%)
23:37 (5%)
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12 x 2 verification/cbmc/proofs/aws_byte_cursor_eq_c_str
verification/cbmc/proofs...or_eq_c_str_ignore_case
aws_byte_cursor_eq_c_str_harness.c
aws_byte_cursor_eq_c_str_ignore_case_...
 11:26 (54%)
11:26 (60%)
 view
12 x 2 verification/cbmc/proofs/aws_ring_buffer_acquire
verification/cbmc/proofs...ng_buffer_acquire_up_to
aws_ring_buffer_acquire_harness.c
aws_ring_buffer_acquire_up_to_harness.c
 48:60 (30%)
38:50 (40%)
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12 x 2 source/posix
source/windows
thread.c
thread.c
 78:108 (5%)
46:64 (5%)
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Duplicated Units
The list of top 10 duplicated units.
See data for all 10 unit duplicates...
Size#FoldersFilesLinesCode
13 x 2 source/posix
source/windows
file.c
file.c
 63:81 
97:115 
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13 x 2 source/posix
source/windows
thread.c
thread.c
 409:423 
379:393 
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13 x 2 include/aws/common
include/aws/common
inl
math.fallback.inl
math.fallback.inl
 110:124 
130:144 
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12 x 2 include/aws/common
include/aws/common
inl
math.gcc_x64_asm.inl
math.gcc_x64_asm.inl
 112:126 
147:161 
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11 x 2 source/posix
source/windows
thread.c
thread.c
 85:110 
53:66 
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11 x 2 source
source
fifo_cache.c
lru_cache.c
 43:59 
55:72 
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6 x 2 source/android
source
logging.c
log_formatter.c
 22:29 
36:43 
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6 x 2 include/aws/common
include/aws/common
inl
math.inl
math.inl
 60:67 
73:80 
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6 x 2 include/aws/common
include/aws/common
inl
math.gcc_builtin.inl
math.msvc.inl
 39:45 
141:147 
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6 x 2 include/aws/common
include/aws/common
inl
math.gcc_builtin.inl
math.msvc.inl
 66:72 
176:182 
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