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weaks rework

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InsanusMokrassar 2024-06-14 17:09:04 +06:00
parent 4d55ec6f36
commit 09bb90604d
4 changed files with 56 additions and 44 deletions
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3
CHANGELOG.md
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@ -2,6 +2,9 @@
## 0.20.52
* `Coroutines`:
* Small rework of weak jobs: add `WeakScope` factory, rename old weal extensions and add kdocs
## 0.20.51
* `Versions`:

21
coroutines/src/commonMain/kotlin/dev/inmo/micro_utils/coroutines/WeakJob.kt
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@ -4,6 +4,12 @@ import kotlinx.coroutines.*
import kotlin.coroutines.CoroutineContext
import kotlin.coroutines.EmptyCoroutineContext
/**
* Created [CoroutineScope] which will [launch] listening of [context] job completing and drop itself. Current weak
* scope **will not** be attached to [context] directly. So, this [CoroutineScope] will not prevent parent one from
* cancelling if it is launched with [supervisorScope] or [coroutineScope], but still will follow closing status
* of parent [Job]
*/
fun WeakScope(
context: CoroutineContext
) = CoroutineScope(context.minusKey(Job) + Job()).also { newScope ->
@ -13,10 +19,20 @@ fun WeakScope(
}
}
/**
* Created [CoroutineScope] which will [launch] listening of [scope] [CoroutineContext] job completing and drop itself. Current weak
* scope **will not** be attached to [scope] [CoroutineContext] directly. So, this [CoroutineScope] will not prevent parent one from
* cancelling if it is launched with [supervisorScope] or [coroutineScope], but still will follow closing status
* of parent [Job]
*/
fun WeakScope(
scope: CoroutineScope
) = WeakScope(scope.coroutineContext)
/**
* [this] [CoroutineScope] will be used as base for [WeakScope]. Other parameters ([context], [start], [block])
* will be used to [launch] [Job]
*/
fun CoroutineScope.launchWeak(
context: CoroutineContext = EmptyCoroutineContext,
start: CoroutineStart = CoroutineStart.DEFAULT,
@ -28,6 +44,10 @@ fun CoroutineScope.launchWeak(
return job
}
/**
* [this] [CoroutineScope] will be used as base for [WeakScope]. Other parameters ([context], [start], [block])
* will be used to create [async] [Deferred]
*/
fun <T> CoroutineScope.asyncWeak(
context: CoroutineContext = EmptyCoroutineContext,
start: CoroutineStart = CoroutineStart.DEFAULT,
@ -38,6 +58,7 @@ fun <T> CoroutineScope.asyncWeak(
deferred.invokeOnCompletion { scope.cancel() }
return deferred
}
@Deprecated("Renamed", ReplaceWith("launchWeak(context, start, block)", "dev.inmo.micro_utils.coroutines.launchWeak"))
fun CoroutineScope.weakLaunch(
context: CoroutineContext = EmptyCoroutineContext,

36
coroutines/src/commonTest/kotlin/WeakJobTests.kt
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@ -1,9 +1,6 @@
import dev.inmo.micro_utils.coroutines.asyncWeak
import dev.inmo.micro_utils.coroutines.launchWeak
import kotlinx.coroutines.CancellationException
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlinx.coroutines.*
import kotlinx.coroutines.test.runTest
import kotlin.test.Test
import kotlin.test.assertTrue
@ -33,4 +30,35 @@ class WeakJobTests {
}
error("Cancellation exception has not been thrown")
}
@Test
fun testThatWeakJobsWorksCorrectly() = runTest {
val scope = CoroutineScope(Dispatchers.Default)
lateinit var weakLaunchJob: Job
lateinit var weakAsyncJob: Job
val completeDeferred = Job()
coroutineScope {
weakLaunchJob = launchWeak {
while (isActive) {
delay(100L)
}
}
weakAsyncJob = asyncWeak {
while (isActive) {
delay(100L)
}
}
coroutineContext.job.invokeOnCompletion {
scope.launch {
delay(1000L)
completeDeferred.complete()
}
}
launch { delay(1000L); cancel() }
}
completeDeferred.join()
assertTrue(!weakLaunchJob.isActive)
assertTrue(!weakAsyncJob.isActive)
}
}

40
coroutines/src/jvmTest/kotlin/dev/inmo/micro_utils/coroutines/WeakJob.kt
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@ -1,40 +0,0 @@
package dev.inmo.micro_utils.coroutines
import kotlinx.coroutines.*
import org.junit.Test
class WeakJob {
@Test
fun `test that weak jobs works correctly`() {
val scope = CoroutineScope(Dispatchers.Default)
lateinit var weakLaunchJob: Job
lateinit var weakAsyncJob: Job
scope.launchSynchronously {
val completeDeferred = Job()
coroutineScope {
weakLaunchJob = weakLaunch {
while (isActive) {
delay(100L)
}
}
weakAsyncJob = weakAsync {
while (isActive) {
delay(100L)
}
}
coroutineContext.job.invokeOnCompletion {
scope.launch {
delay(1000L)
completeDeferred.complete()
}
}
launch { delay(1000L); cancel() }
}
completeDeferred.join()
}
assert(!weakLaunchJob.isActive)
assert(!weakAsyncJob.isActive)
}
}