113 lines
3.6 KiB
Java
113 lines
3.6 KiB
Java
/*
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* Copyright (c) 2018, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/* @test id=passive
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* @summary Test that garbage in the pinned region does not crash VM
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* @key randomness
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* @requires vm.gc.Shenandoah
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* @library /test/lib
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*
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx128m
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* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
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* -XX:+ShenandoahVerify -XX:+ShenandoahDegeneratedGC
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* TestPinnedGarbage
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*
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx128m
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* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
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* -XX:+ShenandoahVerify -XX:-ShenandoahDegeneratedGC
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* TestPinnedGarbage
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*/
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/* @test id=aggressive
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* @summary Test that garbage in the pinned region does not crash VM
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* @key randomness
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* @requires vm.gc.Shenandoah
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* @library /test/lib
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*
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx128m
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* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
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* TestPinnedGarbage
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*/
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/* @test id=verify
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* @summary Test that garbage in the pinned region does not crash VM
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* @key randomness
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* @requires vm.gc.Shenandoah
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* @library /test/lib
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* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx128m
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* -XX:+UseShenandoahGC
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* -XX:+ShenandoahVerify
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* TestPinnedGarbage
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*/
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import java.util.Arrays;
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import java.util.Random;
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import jdk.test.lib.Utils;
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public class TestPinnedGarbage {
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static {
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System.loadLibrary("TestPinnedGarbage");
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}
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private static final int NUM_RUNS = 1_000;
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private static final int OBJS_COUNT = 1 << 10;
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private static final int GARBAGE_COUNT = 1 << 18;
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private static native void pin(int[] a);
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private static native void unpin(int[] a);
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public static void main(String[] args) {
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Random rng = Utils.getRandomInstance();
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for (int i = 0; i < NUM_RUNS; i++) {
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test(rng);
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}
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}
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private static void test(Random rng) {
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Object[] objs = new Object[OBJS_COUNT];
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for (int i = 0; i < OBJS_COUNT; i++) {
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objs[i] = new MyClass();
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}
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int[] cog = new int[10];
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int cogIdx = rng.nextInt(OBJS_COUNT);
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objs[cogIdx] = cog;
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pin(cog);
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for (int i = 0; i < GARBAGE_COUNT; i++) {
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int rIdx = rng.nextInt(OBJS_COUNT);
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if (rIdx != cogIdx) {
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objs[rIdx] = new MyClass();
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}
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}
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unpin(cog);
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}
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public static class MyClass {
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public Object ref = new Object();
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}
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}
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