- Disabled the publication of the multiplatform library metadata for the old (1.6 and earlier) KMP Gradle plugin (#3809).
- Fixed a bug introduced in 1.7.2 that disabled the coroutine debugger in IDEA (#3822).
- Coroutines debugger no longer keeps track of coroutines with empty coroutine context (#3782).
CopyableThreadContextElement
now properly copies an element when crossing the coroutine boundary inflowOn
(#3787). Thanks @wanyingd1996!- Coroutine timeouts no longer prevent K/N
newSingleThreadContext
from closing (#3768). - A non-linearizability in
Mutex
duringtryLock
/unlock
sequence with owners is fixed (#3745). - Atomicfu version is updated to 0.21.0.
- Special characters in coroutine names in JSON dumps are supported (#3747)
- The binary compatibility of the experimental overload of
runTest
is restored (#3673) - Channels that don't use
onUndeliveredElement
now allocate less memory (#3646)
- New
Channel
implementation with significant performance improvements across the API (#3621). - New
select
operator implementation: faster, more lightweight, and more robust (#3020). Mutex
andSemaphore
now share the same underlying data structure (#3020).Dispatchers.IO
is added to K/N (#3205)newFixedThreadPool
andDispatchers.Default
implementations on K/N were wholly rewritten to support graceful growth under load (#3595).
kotlinx-coroutines-test
rework:- Add the
timeout
parameter torunTest
for the whole-test timeout, 10 seconds by default (#3270). This replaces the configuration of quiescence timeouts, which is now deprecated (#3603). - The
withTimeout
exception messages indicate if the timeout used the virtual time (#3588). TestCoroutineScheduler
,runTest
, andTestScope
API are promoted to stable (#3622).runTest
now also fails if there were uncaught exceptions in coroutines not inherited from the test coroutine (#1205).
- Add the
- Old K/N memory model is no longer supported (#3375).
- New generic upper bounds were added to reactive integration API where the language since 1.8.0 dictates (#3393).
kotlinx-coroutines-core
andkotlinx-coroutines-jdk8
artifacts were merged into a single artifact (#3268).- Artificial stackframes in stacktrace recovery no longer contain the
\b
symbol and are now navigable in IDE and supplied with proper documentation (#2291). CoroutineContext.isActive
returnstrue
for contexts without any job in them (#3300).
- Kotlin version is updated to 1.8.20
- Atomicfu version is updated to 0.20.2.
JavaFx
version is updated to 17.0.2 inkotlinx-coroutines-javafx
(#3671)..- JPMS is supported (#2237). Thanks @lion7!
BroadcastChannel
and all the corresponding API are deprecated (#2680).- Added all supported K/N targets (#3601, #812, #855).
- K/N
Dispatchers.Default
is backed by the number of threads equal to the number of available cores (#3366). - Fixed an issue where some coroutines' internal exceptions were not properly serializable (#3328).
- Introduced
Job.parent
API (#3201). - Fixed a bug when
TestScheduler
leaked cancelled jobs (#3398). TestScope.timeSource
now provides comparable time marks (#3617). Thanks @hfhbd!- Fixed an issue when cancelled
withTimeout
handles were preserved in JS runtime (#3440). - Ensure
awaitFrame
only awaits a single frame when used from the main looper (#3432). Thanks @pablobaxter! - Obsolete
Class-Path
attribute was removed fromkotlinx-coroutines-debug.jar
manifest (#3361). - Fixed a bug when
updateThreadContext
operated on the parent context (#3411). - Added new
Flow.filterIsInstance
extension (#3240). Dispatchers.Default
thread name prefixes are now configurable with system property (#3231).- Added
Flow.timeout
operator as@FlowPreview
(#2624). Thanks @pablobaxter! - Improved the performance of the
future
builder in case of exceptions (#3475). Thanks @He-Pin! Mono.awaitSingleOrNull
now waits for theonComplete
signal (#3487).Channel.isClosedForSend
andChannel.isClosedForReceive
are promoted from experimental to delicate (#3448).- Fixed a data race in native
EventLoop
(#3547). Dispatchers.IO.limitedParallelism(valueLargerThanIOSize)
no longer creates an additional wrapper (#3442). Thanks @dovchinnikov!- Various
@FlowPreview
and@ExperimentalCoroutinesApi
are promoted to experimental and stable respectively (#3542, #3097, #3548). - Performance improvements in
Dispatchers.Default
andDispatchers.IO
(#3416, #3418). - Fixed a bug when internal
suspendCancellableCoroutineReusable
might have hanged (#3613). - Introduced internal API to process events in the current system dispatcher (#3439).
- Global
CoroutineExceptionHandler
is no longer invoked in case of unprocessedfuture
failure (#3452). - Performance improvements and reduced thread-local pressure for the
withContext
operator (#3592). - Improved performance of
DebugProbes
(#3527). - Fixed a bug when the coroutine debugger might have detected the state of a coroutine incorrectly (#3193).
CoroutineDispatcher.asExecutor()
runs tasks without dispatching if the dispatcher is unconfined (#3683). Thanks @odedniv!SharedFlow.toMutableList
andSharedFlow.toSet
lints are introduced (#3706).Channel.invokeOnClose
is promoted to stable API (#3358).- Improved lock contention in
Dispatchers.Default
andDispatchers.IO
during the startup phase (#3652). - Fixed a bug that led to threads oversubscription in
Dispatchers.Default
(#3642). - Fixed a bug that allowed
limitedParallelism
to perform dispatches even after the underlying dispatcher was closed (#3672). - Fixed a bug that prevented stacktrace recovery when the exception's constructor from
cause
was selected (#3714). - Improved sanitizing of stracktrace-recovered traces (#3714).
- Introduced an internal flag to disable uncaught exceptions reporting in tests as a temporary migration mechanism (#3736).
- Various documentation improvements and fixes.
Changelog for previous versions may be found in CHANGES_UP_TO_1.7.md