Pavel Kunyavskiy
488d24296a
Invocation of atomic intrinsics is only allowed on property references that are known at compile time. This commit makes it possible to also invoke intrinsics on a constant property reference getter passed as an argument. See KT-58359 Co-authored-by: Pavel Kunyavskiy <Pavel.Kunyavskiy@jetbrains.com> Merge-request: KT-MR-10413 Merged-by: Maria Sokolova <maria.sokolova@jetbrains.com>
44 lines
1.3 KiB
Kotlin
Vendored
44 lines
1.3 KiB
Kotlin
Vendored
// TARGET_BACKEND: NATIVE
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@file:Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
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import kotlin.concurrent.*
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import kotlin.reflect.*
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class Box(@Volatile var value1: Int, @Volatile var value2: Int)
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inline fun wrapCas(crossinline refGetter: () -> KMutableProperty0<Int>, expected: Int, new: Int) = refGetter().compareAndExchangeField(expected, new)
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inline fun wrapCasTwice(crossinline refGetter: () -> KMutableProperty0<Int>, expected: Int, new: Int) = wrapCas(refGetter, expected, new)
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class A(@Volatile var x: String) {
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fun add(str: String) {
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update({ -> (this::x)}) { x + str }
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}
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}
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inline fun update(crossinline refGetter: () -> KMutableProperty0<String>, action: (String) -> String) {
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while (true) {
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val cur = refGetter().get()
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val upd = action(cur)
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if (refGetter().compareAndSetField(cur, upd)) return
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}
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}
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fun box() : String {
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val box = Box(1, 2)
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wrapCas({ -> (box::value1)}, 1, 3)
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wrapCas({ -> (box::value2)}, 2, 4)
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if (box.value1 != 3) return "FAIL 1"
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if (box.value2 != 4) return "FAIL 2"
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wrapCasTwice({ -> (box::value1)}, 3, 5)
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wrapCasTwice( { -> (box::value2)}, 4, 6)
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if (box.value1 != 5) return "FAIL 3"
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if (box.value2 != 6) return "FAIL 4"
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val a = A("a")
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a.add("b")
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if (a.x != "ab") return "FAIL 5"
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return "OK"
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}
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