Abduqodiri Qurbonzoda
56 lines
1.3 KiB
Kotlin
56 lines
1.3 KiB
Kotlin
@file:OptIn(kotlin.experimental.ExperimentalNativeApi::class, FreezingIsDeprecated::class, kotlin.native.runtime.NativeRuntimeApi::class)
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import kotlin.native.concurrent.*
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import kotlin.native.ref.*
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import kotlin.test.*
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fun main() {
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test1()
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test2()
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}
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fun test1() {
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ensureGetsCollectedFrozenAndNotFrozen { LazyCapturesThis() }
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ensureGetsCollectedFrozenAndNotFrozen {
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val l = LazyCapturesThis()
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l.bar
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l
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}
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ensureGetsCollected {
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val l = LazyCapturesThis().freeze()
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l.bar
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l
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}
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}
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class LazyCapturesThis {
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fun foo() = 42
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val bar by lazy { foo() }
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}
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fun test2() {
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ensureGetsCollectedFrozenAndNotFrozen { Throwable() }
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ensureGetsCollectedFrozenAndNotFrozen {
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val throwable = Throwable()
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throwable.getStackTrace()
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throwable
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}
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ensureGetsCollected {
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val throwable = Throwable().freeze()
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throwable.getStackTrace()
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throwable
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}
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}
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fun ensureGetsCollectedFrozenAndNotFrozen(create: () -> Any) {
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ensureGetsCollected { create().freeze() }
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ensureGetsCollected(create)
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}
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fun ensureGetsCollected(create: () -> Any) {
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val ref = makeWeakRef(create)
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kotlin.native.runtime.GC.collect()
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assertNull(ref.get())
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}
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fun makeWeakRef(create: () -> Any) = WeakReference(create()) |