Pavel Kunyavskiy
64 lines
1.9 KiB
Kotlin
64 lines
1.9 KiB
Kotlin
/*
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* Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
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* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
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*/
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@file:OptIn(kotlin.ExperimentalStdlibApi::class)
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import kotlin.native.internal.GC
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import kotlin.test.*
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@Test
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fun `nothing new collected`() {
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GC.collect()
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GC.collect();
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val stat = GC.lastGCInfo
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assertNotNull(stat)
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assertEquals(stat.memoryUsageBefore.keys, stat.memoryUsageAfter.keys)
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for (key in stat.memoryUsageBefore.keys) {
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assertEquals(stat.memoryUsageBefore[key]!!.objectsCount, stat.memoryUsageAfter[key]!!.objectsCount)
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assertEquals(stat.memoryUsageBefore[key]!!.totalObjectsSizeBytes, stat.memoryUsageAfter[key]!!.totalObjectsSizeBytes)
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}
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}
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object Global {
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val x = listOf(1, 2, 3)
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}
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@Test
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fun `stable refs in root set`() {
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GC.collect()
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val stat0 = GC.lastGCInfo
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assertNotNull(stat0)
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val rootSet0 = stat0.rootSet
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assertNotNull(rootSet0)
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val x = listOf(1, 2, 3)
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val stable = kotlinx.cinterop.StableRef.create(x)
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GC.collect();
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val stat1 = GC.lastGCInfo
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assertNotNull(stat1)
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val rootSet1 = stat1.rootSet
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assertNotNull(rootSet1)
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assertEquals(rootSet0.stableReferences + 1, rootSet1.stableReferences)
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stable.dispose()
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Global.x // to initialize and register global object
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GC.collect();
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val stat2 = GC.lastGCInfo
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assertNotNull(stat2)
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val rootSet2 = stat2.rootSet
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assertNotNull(rootSet2)
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assertEquals(rootSet0.stableReferences, rootSet2.stableReferences)
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assertEquals(rootSet1.globalReferences + 1, rootSet2.globalReferences)
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}
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@Test
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fun `check everything is filled at the end`() {
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GC.collect()
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val stat = GC.lastGCInfo
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assertNotNull(stat)
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// GC.collect is waiting for finalizers, so it should bet not null
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assertNotNull(stat.postGcCleanupTimeNs)
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}
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