Liincheck 2.25

Bug Fixes:

• Do not call Thread.stop() in FixedActiveThreadsExecutor on Java 20+ (#271)
• Allow passing null-s to System.identityHashCode(..) in the model checking mode (#266)
• Fix ExpandingRangeGeneratorTest failing on JDK 19+

Improvements:

• Bump Kotlin, Gradle, Kotlin Coroutines, and ASM versions (#268)
• Do not filter Lincheck events when printing a thread dump if the thread has hung in the Lincheck internals

Lincheck 2.24

Bug fixes:

• Fix hashCode() support (#263, #131)
• Fix representation of anonymous objects in interleaving traces (#245)

Improvements:

• Enable validation function tracing (#240)
• Allow at most one validation function (#243)
• Execute init and post parts via the same mechanism as for the parallel one. (#238)
• Call validation functions only at the end of the scenario (#237)
• Cache instrumented classes (#229)

Lincheck 2.23

Bug fixes:

• Interleaving replay after a spin cycle is added to avoid side effects (#224)
• Fix an infinite loop in TraceCollector and analyze only the first spin lock cycle when detecting one (#216)
• Allow removing all operations in the parallel part during minimization (#217)

Lincheck 2.22

Bug Fixes:

• Validation functions are now running in ignored section (#213)
• Do not transform DebugKt to avoid ExceptionInInitializerError (#212)
• Show operation calls in the execution trace even when no events occur in them (#205)

Lincheck 2.21

Improvements:

• Shorten spin locks in traces (#191)
• Optimize synchronization when the number of threads exceeds the number of cores (#204)

Lincheck 2.20

New Features:

• Add a parameter generator for enum classes (#187)

Bug Fixes:

• Fix a race in FixedActiveThreadsExecutor (#202)
• Bugfix for wait/notify support with lock re-entrance (#145)

Improvements:

• Run init/post parts of the scenario in the 1st thread, changing the scenario and trace output formats correspondingly (#146)
• Consider all exceptions as possible execution results (#181)
• Validation exception stack trace shortened (#198)
• Print operation results in interleaving traces (#197)

Thanks to @eupp and @avpotapov00 for your effort in significantly improving Lincheck in this release!

Lincheck-2.19

With this release, Lincheck tests are now up to 2x (!) faster on some machines (#173)

Improvements:

• Cleanup the user guide (#144)
• Fix a typo in ObstructionFreedomViolationTest.kt file name (#147)
• Add a link to the KotlinConf 2023 talk on Lincheck (#182)

lincheck-2.18.1

In the previous release, we accidentally changed the package of parameter generators. This release fixes the issue.

lincheck 2.18

License change!

Lincheck is now licensed under MPL-2.0 instead of LGPL-3.0 🎉

Bug fixes

• Reset parameter generator expanding ranges for each scenario (#180)
• Fixed String generator (#172)
• Correct the name and missing package line in CustomScenarioDSLTest.kt. (#183), thanks to @lowasser

Lincheck 2.17

Improvements

• Parameter generation has been improved (#149)
• The verboseTrace configuration option has been removed, now both shortened and detailed traces are always printed (#148)
• Lincheck does not ask for equals/hashCode anymore (#135)
• Bumped Java, Kotlin, AtomicFU, and Gradle versions (#161)
• Deprecate @Operation.group and @OpGroupConfig and introduce @Operation.nonParallelGroup as a replacement (#163)

Bug Fixes

• Biasing in parameter generation has been fixed (#120)
• Fixed a memory leak in the verifier (#128)