1.1.0-alpha

Version 1.1.0-alpha

Major improvements in coroutines testing and debugging

• New module: kotlinx-coroutines-debug. Debug agent that improves coroutines stacktraces, allows to print all active coroutines and its hierarchies and can be installed as Java agent.
• New module: kotlinx-coroutines-test. Allows setting arbitrary Dispatchers.Main implementation for tests (#810).
• Stacktrace recovery mechanism. Exceptions from coroutines are recovered from current coroutine stacktraces to simplify exception diagnostic. Enabled in debug mode, controlled by kotlinx.coroutines.debug system property (#493).

Other improvements

• MainScope factory and CoroutineScope.cancel extension (#829). One line CoroutineScope integration!
• CancellableContinuation race between resumeWithException and cancel is addressed, exceptions during cancellation are no longer reported to exception handler (#830, #892).
• Dispatchers.Default now consumes much less CPU on JVM (#840).
• Better diagnostic and fast failure if an uninitialized dispatcher is used (#880).
• Conflated channel becomes linearizable.
• Fixed inconsistent coroutin es state when the result of the coroutine had type DisposableHandle (#835).
• Fixed JavaFx initialization bug (#816).
• TimeoutCancellationException is thrown by withTimeout instead of CancellationException if negative timeout is supplied (#870).
• Kotlin/Native single-threaded workers support: coroutines can be safely used in multiple independent K/N workers.
• jsdom support in Dispatchers.Default on JS.
• rxFlowable generic parameter is now restricted with Any.
• Guava 27 support in kotlinx-coroutines-guava.
• Coroutines are now built with progressive mode.
• Various fixes in the documentation.