59: Improve Bytes Performance

[artemananiev]

Fix summary:

• UnsafeUtils class is added to provide a set of utility methods on top of sun.misc.Unsafe
• Bytes.getInt() and getLong() are implemented using UnsafeUtils
• A few other Bytes methods are overridden to provide more efficient implementation than what's in RandomAccessData: contains(), asUtf8String()

Testing:

• Unit tests for UnsafeUtils.getInt() and getLong() are added
• Unit tests for overridden Bytes methods are added
• A JMH benchmark for the old and the new getInt() and getLong() implementations is provided

Fixes: #59
Signed-off-by: Artem Ananev artem.ananev@swirldslabs.com

[github-actions]

JUnit Test Report

     39 files       39 suites   3m 6s ⏱️
   505 tests    504 ✔️ 1 💤 0 ❌
2 693 runs  2 684 ✔️ 9 💤 0 ❌

Results for commit 098ab95.

♻️ This comment has been updated with latest results.

[github-actions]

Integration Test Report

86 721 tests   86 721 ✔️  4m 31s ⏱️
     209 suites           0 💤
     209 files             0 ❌

Results for commit 098ab95.

♻️ This comment has been updated with latest results.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for 97ec5f11	71.88%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (97ec5f1)	Report Missing	Report Missing	Report Missing
Head commit (098ab95)	3611	1013	28.05%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#111)	32	23	71.88%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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Footnotes

1. Codacy didn't receive coverage data for the commit, or there was an error processing the received data. Check your integration for errors and validate that your coverage setup is correct. ↩

[rbair23]

Do you have any data from before and after this change with JMH? I'm wondering what the raw improvement numbers are.