Add StampedLockFactory and ReadWriteLockFactory

[l0s]

This adds two new factories that generate StampedLock and ReadWriteLock instances for applications that require more granular control over locking. The unit tests duplicate the verifications in XMutexFactoryImplTest and also introduce verifications specific to the synchronisation mechanisms.

Some things I considered, but did not end up implementing:

• Create a common base test class for the common verifications used by XMutexFactoryImplTest, StampedLockFactoryTest, and ReadWriteLockFactoryTest.
• Adding an interface and impl class for the new factories. It did not appear that multiple implementations for XMutexFactory were actually used and it was not clear to me why clients would provide a custom implementation.

I would be happy to revisit these, of course.

Addresses: #9

[codecov-commenter]

Codecov Report

Merging #10 into master will increase coverage by 0.15%. The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master      #10      +/-   ##
============================================
+ Coverage     99.16%   99.32%   +0.15%     
- Complexity       37       51      +14     
============================================
  Files             4        6       +2     
  Lines           120      148      +28     
  Branches         10       10              
============================================
+ Hits            119      147      +28     
  Partials          1        1              

Impacted Files	Coverage Δ	Complexity Δ
...java/com/antkorwin/xsync/ReadWriteLockFactory.java	100.00% <100.00%> (ø)	8.00 <8.00> (?)
...n/java/com/antkorwin/xsync/StampedLockFactory.java	100.00% <100.00%> (ø)	6.00 <6.00> (?)

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[l0s]

As an aside, while developing this, I noticed that the project builds fine with Java 9, but fails with Java 10 or higher. It produces this error during the testCompile phase:

java.lang.ClassNotFoundException: com.sun.tools.javac.code.TypeTags

[sonarqubecloud[bot]]

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0 Bugs
0 Vulnerabilities
0 Security Hotspots
2 Code Smells

No Coverage information
0.0% Duplication