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🌻 The Open Source app Petals aims to help its users to either quit weed, reduce usage or simply know how much they're using.
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⬆ Update dependency org.jetbrains.kotlinx:kotlinx-coroutines-core-jvm to v1.8.1 #637

Closed renovate[bot] closed 2 weeks ago

renovate[bot] commented 2 weeks ago

Mend Renovate

This PR contains the following updates:

Package Change Age Adoption Passing Confidence
org.jetbrains.kotlinx:kotlinx-coroutines-core-jvm 1.5.2 -> 1.8.1 age adoption passing confidence

Release Notes

Kotlin/kotlinx.coroutines (org.jetbrains.kotlinx:kotlinx-coroutines-core-jvm) ### [`v1.8.1`](https://togithub.com/Kotlin/kotlinx.coroutines/blob/HEAD/CHANGES.md#Version-181) [Compare Source](https://togithub.com/Kotlin/kotlinx.coroutines/compare/1.8.0...1.8.1) - Remove the `@ExperimentalTime` annotation from usages of `TimeSource` ([#​4046](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4046)). Thanks, [@​hfhbd](https://togithub.com/hfhbd)! - Introduce a workaround for an Android bug that caused an occasional `NullPointerException` when setting the `StateFlow` value on old Android devices ([#​3820](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3820)). - No longer use `kotlin.random.Random` as part of `Dispatchers.Default` and `Dispatchers.IO` initialization ([#​4051](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4051)). - `Flow.timeout` throws the exception with which the channel was closed ([#​4071](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4071)). - Small tweaks and documentation fixes. ##### Changelog relative to version 1.8.1-Beta - `Flow.timeout` throws the exception with which the channel was closed ([#​4071](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4071)). - Small documentation fixes. ### [`v1.8.0`](https://togithub.com/Kotlin/kotlinx.coroutines/blob/HEAD/CHANGES.md#Version-180) [Compare Source](https://togithub.com/Kotlin/kotlinx.coroutines/compare/1.7.3...1.8.0) - Implement the library for the Web Assembly (Wasm) for JavaScript ([#​3713](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3713)). Thanks [@​igoriakovlev](https://togithub.com/igoriakovlev)! - Major Kotlin version update: was 1.8.20, became 1.9.21. - On Android, ensure that `Dispatchers.Main != Dispatchers.Main.immediate` ([#​3545](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3545), [#​3963](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3963)). - Fixed a bug that caused `Flow` operators that limit cancel the upstream flow to forget that they were already finished if there is another such operator upstream ([#​4035](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4035), [#​4038](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4038)) - `kotlinx-coroutines-debug` is published with the correct Java 9 module info ([#​3944](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3944)). - `kotlinx-coroutines-debug` no longer requires manually setting `DebugProbes.enableCoroutineCreationStackTraces` to `false`, it's the default ([#​3783](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3783)). - `kotlinx-coroutines-test`: set the default timeout of `runTest` to 60 seconds, added the ability to configure it on the JVM with the `kotlinx.coroutines.test.default_timeout=10s` ([#​3800](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3800)). - `kotlinx-coroutines-test`: fixed a bug that could lead to not all uncaught exceptions being reported after some tests failed ([#​3800](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3800)). - `delay(Duration)` rounds nanoseconds up to whole milliseconds and not down ([#​3920](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3920)). Thanks [@​kevincianfarini](https://togithub.com/kevincianfarini)! - `Dispatchers.Default` and the default thread for background work are guaranteed to use the same context classloader as the object containing it them ([#​3832](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3832)). - It is guaranteed that by the time `SharedFlow.collect` suspends for the first time, it's registered as a subscriber for that `SharedFlow` ([#​3885](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3885)). Before, it was also true, but not documented. - Atomicfu version is updated to 0.23.1, and Kotlin/Native atomic transformations are enabled, reducing the footprint of coroutine-heavy code ([#​3954](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3954)). - Added a workaround for miscompilation of `withLock` on JS ([#​3881](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3881)). Thanks [@​CLOVIS-AI](https://togithub.com/CLOVIS-AI)! - Small tweaks and documentation fixes. ##### Changelog relative to version 1.8.0-RC2 - `kotlinx-coroutines-debug` no longer requires manually setting `DebugProbes.enableCoroutineCreationStackTraces` to `false`, it's the default ([#​3783](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3783)). - Fixed a bug that caused `Flow` operators that limit cancel the upstream flow to forget that they were already finished if there is another such operator upstream ([#​4035](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4035), [#​4038](https://togithub.com/Kotlin/kotlinx.coroutines/issues/4038)) - Small documentation fixes. ### [`v1.7.3`](https://togithub.com/Kotlin/kotlinx.coroutines/blob/HEAD/CHANGES.md#Version-173) [Compare Source](https://togithub.com/Kotlin/kotlinx.coroutines/compare/1.7.2...1.7.3) - Disabled the publication of the multiplatform library metadata for the old (1.6 and earlier) KMP Gradle plugin ([#​3809](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3809)). - Fixed a bug introduced in 1.7.2 that disabled the coroutine debugger in IDEA ([#​3822](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3822)). ### [`v1.7.2`](https://togithub.com/Kotlin/kotlinx.coroutines/blob/HEAD/CHANGES.md#Version-172) [Compare Source](https://togithub.com/Kotlin/kotlinx.coroutines/compare/1.7.1...1.7.2) ##### Bug fixes and improvements - Coroutines debugger no longer keeps track of coroutines with empty coroutine context ([#​3782](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3782)). - `CopyableThreadContextElement` now properly copies an element when crossing the coroutine boundary in `flowOn` ([#​3787](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3787)). Thanks [@​wanyingd1996](https://togithub.com/wanyingd1996)! - Coroutine timeouts no longer prevent K/N `newSingleThreadContext` from closing ([#​3768](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3768)). - A non-linearizability in `Mutex` during `tryLock`/`unlock` sequence with owners is fixed ([#​3745](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3745)). - Atomicfu version is updated to 0.21.0. ### [`v1.7.1`](https://togithub.com/Kotlin/kotlinx.coroutines/blob/HEAD/CHANGES.md#Version-171) [Compare Source](https://togithub.com/Kotlin/kotlinx.coroutines/compare/1.7.0...1.7.1) ##### Bug fixes and improvements - Special characters in coroutine names in JSON dumps are supported ([#​3747](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3747)) - The binary compatibility of the experimental overload of `runTest` is restored ([#​3673](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3673)) - Channels that don't use `onUndeliveredElement` now allocate less memory ([#​3646](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3646)) ### [`v1.7.0`](https://togithub.com/Kotlin/kotlinx.coroutines/blob/HEAD/CHANGES.md#Version-170) [Compare Source](https://togithub.com/Kotlin/kotlinx.coroutines/compare/1.6.4...1.7.0) ##### Core API significant improvements - New `Channel` implementation with significant performance improvements across the API ([#​3621](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3621)). - New `select` operator implementation: faster, more lightweight, and more robust ([#​3020](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3020)). - `Mutex` and `Semaphore` now share the same underlying data structure ([#​3020](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3020)). - `Dispatchers.IO` is added to K/N ([#​3205](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3205)) - `newFixedThreadPool` and `Dispatchers.Default` implementations on K/N were wholly rewritten to support graceful growth under load ([#​3595](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3595)). - `kotlinx-coroutines-test` rework: - Add the `timeout` parameter to `runTest` for the whole-test timeout, 10 seconds by default ([#​3270](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3270)). This replaces the configuration of quiescence timeouts, which is now deprecated ([#​3603](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3603)). - The `withTimeout` exception messages indicate if the timeout used the virtual time ([#​3588](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3588)). - `TestCoroutineScheduler`, `runTest`, and `TestScope` API are promoted to stable ([#​3622](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3622)). - `runTest` now also fails if there were uncaught exceptions in coroutines not inherited from the test coroutine ([#​1205](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1205)). ##### Breaking changes - Old K/N memory model is no longer supported ([#​3375](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3375)). - New generic upper bounds were added to reactive integration API where the language since 1.8.0 dictates ([#​3393](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3393)). - `kotlinx-coroutines-core` and `kotlinx-coroutines-jdk8` artifacts were merged into a single artifact ([#​3268](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3268)). - Artificial stackframes in stacktrace recovery no longer contain the `\b` symbol and are now navigable in IDE and supplied with proper documentation ([#​2291](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2291)). - `CoroutineContext.isActive` returns `true` for contexts without any job in them ([#​3300](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3300)). ##### Bug fixes and improvements - Kotlin version is updated to 1.8.20 - Atomicfu version is updated to 0.20.2. - `JavaFx` version is updated to 17.0.2 in `kotlinx-coroutines-javafx` ([#​3671](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3671)).. - JPMS is supported ([#​2237](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2237)). Thanks [@​lion7](https://togithub.com/lion7)! - `BroadcastChannel` and all the corresponding API are deprecated ([#​2680](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2680)). - Added all supported K/N targets ([#​3601](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3601), [#​812](https://togithub.com/Kotlin/kotlinx.coroutines/issues/812), [#​855](https://togithub.com/Kotlin/kotlinx.coroutines/issues/855)). - K/N `Dispatchers.Default` is backed by the number of threads equal to the number of available cores ([#​3366](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3366)). - Fixed an issue where some coroutines' internal exceptions were not properly serializable ([#​3328](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3328)). - Introduced `Job.parent` API ([#​3201](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3201)). - Fixed a bug when `TestScheduler` leaked cancelled jobs ([#​3398](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3398)). - `TestScope.timeSource` now provides comparable time marks ([#​3617](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3617)). Thanks [@​hfhbd](https://togithub.com/hfhbd)! - Fixed an issue when cancelled `withTimeout` handles were preserved in JS runtime ([#​3440](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3440)). - Ensure `awaitFrame` only awaits a single frame when used from the main looper ([#​3432](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3432)). Thanks [@​pablobaxter](https://togithub.com/pablobaxter)! - Obsolete `Class-Path` attribute was removed from `kotlinx-coroutines-debug.jar` manifest ([#​3361](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3361)). - Fixed a bug when `updateThreadContext` operated on the parent context ([#​3411](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3411)). - Added new `Flow.filterIsInstance` extension ([#​3240](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3240)). - `Dispatchers.Default` thread name prefixes are now configurable with system property ([#​3231](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3231)). - Added `Flow.timeout` operator as `@FlowPreview` ([#​2624](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2624)). Thanks [@​pablobaxter](https://togithub.com/pablobaxter)! - Improved the performance of the `future` builder in case of exceptions ([#​3475](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3475)). Thanks [@​He-Pin](https://togithub.com/He-Pin)! - `Mono.awaitSingleOrNull` now waits for the `onComplete` signal ([#​3487](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3487)). - `Channel.isClosedForSend` and `Channel.isClosedForReceive` are promoted from experimental to delicate ([#​3448](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3448)). - Fixed a data race in native `EventLoop` ([#​3547](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3547)). - `Dispatchers.IO.limitedParallelism(valueLargerThanIOSize)` no longer creates an additional wrapper ([#​3442](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3442)). Thanks [@​dovchinnikov](https://togithub.com/dovchinnikov)! - Various `@FlowPreview` and `@ExperimentalCoroutinesApi` are promoted to experimental and stable respectively ([#​3542](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3542), [#​3097](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3097), [#​3548](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3548)). - Performance improvements in `Dispatchers.Default` and `Dispatchers.IO` ([#​3416](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3416), [#​3418](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3418)). - Fixed a bug when internal `suspendCancellableCoroutineReusable` might have hanged ([#​3613](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3613)). - Introduced internal API to process events in the current system dispatcher ([#​3439](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3439)). - Global `CoroutineExceptionHandler` is no longer invoked in case of unprocessed `future` failure ([#​3452](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3452)). - Performance improvements and reduced thread-local pressure for the `withContext` operator ([#​3592](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3592)). - Improved performance of `DebugProbes` ([#​3527](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3527)). - Fixed a bug when the coroutine debugger might have detected the state of a coroutine incorrectly ([#​3193](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3193)). - `CoroutineDispatcher.asExecutor()` runs tasks without dispatching if the dispatcher is unconfined ([#​3683](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3683)). Thanks [@​odedniv](https://togithub.com/odedniv)! - `SharedFlow.toMutableList` and `SharedFlow.toSet` lints are introduced ([#​3706](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3706)). - `Channel.invokeOnClose` is promoted to stable API ([#​3358](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3358)). - Improved lock contention in `Dispatchers.Default` and `Dispatchers.IO` during the startup phase ([#​3652](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3652)). - Fixed a bug that led to threads oversubscription in `Dispatchers.Default` ([#​3642](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3642)). - Fixed a bug that allowed `limitedParallelism` to perform dispatches even after the underlying dispatcher was closed ([#​3672](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3672)). - Fixed a bug that prevented stacktrace recovery when the exception's constructor from `cause` was selected ([#​3714](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3714)). - Improved sanitizing of stracktrace-recovered traces ([#​3714](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3714)). - Introduced an internal flag to disable uncaught exceptions reporting in tests as a temporary migration mechanism ([#​3736](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3736)). - Various documentation improvements and fixes. Changelog for previous versions may be found in [CHANGES_UP_TO\_1.7.md](CHANGES_UP_TO\_1.7.md) ### [`v1.6.4`](https://togithub.com/Kotlin/kotlinx.coroutines/releases/tag/1.6.4) - Added `TestScope.backgroundScope` for launching coroutines that perform work in the background and need to be cancelled at the end of the test ([#​3287](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3287)). - Fixed the POM of `kotlinx-coroutines-debug` having an incorrect reference to `kotlinx-coroutines-bom`, which cause the builds of Maven projects using the debug module to break ([#​3334](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3334)). - Fixed the `Publisher.await` functions in `kotlinx-coroutines-reactive` not ensuring that the `Subscriber` methods are invoked serially ([#​3360](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3360)). Thank you, [@​EgorKulbachka](https://togithub.com/EgorKulbachka)! - Fixed a memory leak in `withTimeout` on K/N with the new memory model ([#​3351](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3351)). - Added the guarantee that all `Throwable` implementations in the core library are serializable ([#​3328](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3328)). - Moved the documentation to ([#​3342](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3342)). - Various documentation improvements. ### [`v1.6.3`](https://togithub.com/Kotlin/kotlinx.coroutines/releases/tag/1.6.3) [Compare Source](https://togithub.com/Kotlin/kotlinx.coroutines/compare/1.6.2...1.6.3) - Updated atomicfu version to 0.17.3 ([#​3321](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3321)), fixing the projects using this library with JS IR failing to build ([#​3305](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3305)). ### [`v1.6.2`](https://togithub.com/Kotlin/kotlinx.coroutines/releases/tag/1.6.2) - Fixed a bug with `ThreadLocalElement` not being correctly updated when the most outer `suspend` function was called directly without `kotlinx.coroutines` ([#​2930](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2930)). - Fixed multiple data races: one that might have been affecting `runBlocking` event loop, and a benign data race in `Mutex` ([#​3250](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3250), [#​3251](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3251)). - Obsolete `TestCoroutineContext` is removed, which fixes the `kotlinx-coroutines-test` JPMS package being split between `kotlinx-coroutines-core` and `kotlinx-coroutines-test` ([#​3218](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3218)). - Updated the ProGuard rules to further shrink the size of the resulting DEX file with coroutines ([#​3111](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3111), [#​3263](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3263)). Thanks, [@​agrieve](https://togithub.com/agrieve)! - Atomicfu is updated to `0.17.2`, which includes a more efficient and robust JS IR transformer ([#​3255](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3255)). - Kotlin is updated to `1.6.21`, Gradle version is updated to `7.4.2` ([#​3281](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3281)). Thanks, [@​wojtek-kalicinski](https://togithub.com/wojtek-kalicinski)! - Various documentation improvements. ### [`v1.6.1`](https://togithub.com/Kotlin/kotlinx.coroutines/releases/tag/1.6.1) - Rollback of time-related functions dispatching on `Dispatchers.Main`. This behavior was introduced in 1.6.0 and then found inconvenient and erroneous ([#​3106](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3106), [#​3113](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3113)). - Reworked the newly-introduced `CopyableThreadContextElement` to solve issues uncovered after the initial release ([#​3227](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3227)). - Fixed a bug with `ThreadLocalElement` not being properly updated in racy scenarios ([#​2930](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2930)). - Reverted eager loading of default `CoroutineExceptionHandler` that triggered ANR on some devices ([#​3180](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3180)). - New API to convert a `CoroutineDispatcher` to a Rx scheduler ([#​968](https://togithub.com/Kotlin/kotlinx.coroutines/issues/968), [#​548](https://togithub.com/Kotlin/kotlinx.coroutines/issues/548)). Thanks [@​recheej](https://togithub.com/recheej)! - Fixed a memory leak with the very last element emitted from `flow` builder being retained in memory ([#​3197](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3197)). - Fixed a bug with `limitedParallelism` on K/N with new memory model throwing `ClassCastException` ([#​3223](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3223)). - `CoroutineContext` is added to the exception printed to the default `CoroutineExceptionHandler` to improve debuggability ([#​3153](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3153)). - Static memory consumption of `Dispatchers.Default` was significantly reduced ([#​3137](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3137)). - Updated slf4j version in `kotlinx-coroutines-slf4j` from 1.7.25 to 1.7.32. ### [`v1.6.0`](https://togithub.com/Kotlin/kotlinx.coroutines/releases/tag/1.6.0) Note that this is a full changelog relative to the 1.5.2 version. Changelog relative to 1.6.0-RC3 can be found at the end. ##### kotlinx-coroutines-test rework - `kotlinx-coroutines-test` became a multiplatform library usable from K/JVM, K/JS, and K/N. - Its API was completely reworked to address long-standing issues with consistency, structured concurrency and correctness ([#​1203](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1203), [#​1609](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1609), [#​2379](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2379), [#​1749](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1749), [#​1204](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1204), [#​1390](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1390), [#​1222](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1222), [#​1395](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1395), [#​1881](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1881), [#​1910](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1910), [#​1772](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1772), [#​1626](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1626), [#​1742](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1742), [#​2082](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2082), [#​2102](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2102), [#​2405](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2405), [#​2462](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2462) ). - The old API is deprecated for removal, but the new API is based on the similar concepts ([README](kotlinx-coroutines-test/README.md)), and the migration path is designed to be graceful: [migration guide](kotlinx-coroutines-test/MIGRATION.md). ##### Dispatchers - Introduced `CoroutineDispatcher.limitedParallelism` that allows obtaining a view of the original dispatcher with limited parallelism ([#​2919](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2919)). - `Dispatchers.IO.limitedParallelism` usages ignore the bound on the parallelism level of `Dispatchers.IO` itself to avoid starvation ([#​2943](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2943)). - Introduced new `Dispatchers.shutdown` method for containerized environments ([#​2558](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2558)). - `newSingleThreadContext` and `newFixedThreadPoolContext` are promoted to delicate API ([#​2919](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2919)). ##### Breaking changes - When racing with cancellation, the `future` builder no longer reports unhandled exceptions into the global `CoroutineExceptionHandler`. Thanks [@​vadimsemenov](https://togithub.com/vadimsemenov)! ([#​2774](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2774), [#​2791](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2791)). - `Mutex.onLock` is deprecated for removal ([#​2794](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2794)). - `Dispatchers.Main` is now used as the default source of time for `delay` and `withTimeout` when present ([#​2972](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2972)). - To opt-out from this behaviour, `kotlinx.coroutines.main.delay` system property can be set to `false`. - Java target of coroutines build is now 8 instead of 6 ([#​1589](https://togithub.com/Kotlin/kotlinx.coroutines/issues/1589)). - **Source-breaking change**: extension `collect` no longer resolves when used with a non-in-place argument of a functional type. This is a candidate for a fix, uncovered after 1.6.0, see [#​3107](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3107) for the additional details. ##### Bug fixes and improvements - Kotlin is updated to 1.6.0. - Kotlin/Native [new memory model](https://blog.jetbrains.com/kotlin/2021/08/try-the-new-kotlin-native-memory-manager-development-preview/) is now supported in regular builds of coroutines conditionally depending on whether `kotlin.native.binary.memoryModel` is enabled ([#​2914](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2914)). - Introduced `CopyableThreadContextElement` for mutable context elements shared among multiple coroutines. Thanks [@​yorickhenning](https://togithub.com/yorickhenning)! ([#​2893](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2893)). - `transformWhile`, `awaitClose`, `ProducerScope`, `merge`, `runningFold`, `runingReduce`, and `scan` are promoted to stable API ([#​2971](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2971)). - `SharedFlow.subscriptionCount` no longer conflates incoming updates and gives all subscribers a chance to observe a short-lived subscription ([#​2488](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2488), [#​2863](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2863), [#​2871](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2871)). - `Flow` exception transparency mechanism is improved to be more exception-friendly ([#​3017](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3017), [#​2860](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2860)). - Cancellation from `flat*` operators that leverage multiple coroutines is no longer propagated upstream ([#​2964](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2964)). - `SharedFlow.collect` now returns `Nothing` ([#​2789](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2789), [#​2502](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2502)). - `DisposableHandle` is now `fun interface`, and corresponding inline extension is removed ([#​2790](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2790)). - `FlowCollector` is now `fun interface`, and corresponding inline extension is removed ([#​3047](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3047)). - Deprecation level of all previously deprecated signatures is raised ([#​3024](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3024)). - The version file is shipped with each JAR as a resource ([#​2941](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2941)). - Unhandled exceptions on K/N are passed to the standard library function `processUnhandledException` ([#​2981](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2981)). - A direct executor is used for `Task` callbacks in `kotlinx-coroutines-play-services` ([#​2990](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2990)). - Metadata of coroutines artifacts leverages Gradle platform to have all versions of dependencies aligned ([#​2865](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2865)). - Default `CoroutineExceptionHandler` is loaded eagerly and does not invoke `ServiceLoader` on its exception-handling path ([#​2552](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2552)). - Fixed the R8 rules for `ServiceLoader` optimization ([#​2880](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2880)). - Fixed BlockHound integration false-positives ([#​2894](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2894), [#​2866](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2866), [#​2937](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2937)). - Fixed the exception handler being invoked several times on Android, thanks to [@​1zaman](https://togithub.com/1zaman) ([#​3056](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3056)). - `SendChannel.trySendBlocking` is now available on Kotlin/Native ([#​3064](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3064)). - The exception recovery mechanism now uses `ClassValue` when available ([#​2997](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2997)). - JNA is updated to 5.9.0 to support Apple M1 ([#​3001](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3001)). - Obsolete method on internal `Delay` interface is deprecated ([#​2979](https://togithub.com/Kotlin/kotlinx.coroutines/issues/2979)). - Support of deprecated `CommonPool` is removed. - `@ExperimentalTime` is no longer needed for methods that use `Duration` ([#​3041](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3041)). - JDK 1.6 is no longer required for building the project ([#​3043](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3043)). - New version of Dokka is used, fixing the memory leak when building the coroutines and providing brand new reference visuals (https://kotlin.github.io/kotlinx.coroutines/) ([#​3051](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3051), [#​3054](https://togithub.com/Kotlin/kotlinx.coroutines/issues/3054)).

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