Ivan Kylchik
c7435ba760
We are going to deprecate `WITH_RUNTIME` directive. The main reason behind this change is that `WITH_STDLIB` directive better describes its meaning, specifically it will add kotlin stdlib to test's classpath.
33 lines
856 B
Kotlin
Vendored
33 lines
856 B
Kotlin
Vendored
// !LANGUAGE: +PolymorphicSignature
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// TARGET_BACKEND: JVM
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// SKIP_JDK6
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// WITH_STDLIB
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import java.lang.invoke.MethodHandles
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import kotlin.concurrent.thread
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fun box(): String {
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val handle = MethodHandles.arrayElementVarHandle(ByteArray::class.java)
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val array = ByteArray(10)
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val index = 0
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// Check that we don't consider non-Object return type of a signature-polymorphic method to be polymorphic.
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handle.weakCompareAndSetPlain(array, index, 0.toByte(), 21.toByte()) as Comparable<*>
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val oldValue = 42.toByte()
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val newValue = (-74).toByte()
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thread {
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Thread.sleep(400L)
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handle.setVolatile(array, index, oldValue)
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}
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while (!handle.compareAndSet(array, index, oldValue, newValue)) {
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Thread.sleep(10L)
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}
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return if (handle.getVolatile(array, index) == newValue) "OK" else "Fail"
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}
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