121 lines
3.9 KiB
Java
121 lines
3.9 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=aggressive-verify
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* @summary Test JNI Global Refs with Shenandoah
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* @requires vm.gc.Shenandoah
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*
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* @run main/othervm/native -Xmx1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
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* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
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* -XX:+ShenandoahVerify
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* TestJNIGlobalRefs
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*/
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/* @test id=aggressive
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* @summary Test JNI Global Refs with Shenandoah
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* @requires vm.gc.Shenandoah
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*
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* @run main/othervm/native -Xmx1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
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* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
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* TestJNIGlobalRefs
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*/
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import java.util.Arrays;
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import java.util.Random;
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public class TestJNIGlobalRefs {
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static {
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System.loadLibrary("TestJNIGlobalRefs");
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}
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private static final long TIME_NSEC = 120L * 1_000_000_000L;
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private static final int ARRAY_SIZE = 10000;
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private static native void makeGlobalRef(Object o);
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private static native void makeWeakGlobalRef(Object o);
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private static native Object readGlobalRef();
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private static native Object readWeakGlobalRef();
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public static void main(String[] args) throws Throwable {
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seedGlobalRef();
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seedWeakGlobalRef();
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long startNanos = System.nanoTime();
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long currentNanos = startNanos;
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while (currentNanos - startNanos < TIME_NSEC) {
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testGlobal();
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testWeakGlobal();
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Thread.sleep(1);
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currentNanos = System.nanoTime();
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}
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}
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private static void seedGlobalRef() {
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int[] a = new int[ARRAY_SIZE];
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fillArray(a, 1337);
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makeGlobalRef(a);
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}
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private static void seedWeakGlobalRef() {
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int[] a = new int[ARRAY_SIZE];
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fillArray(a, 8080);
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makeWeakGlobalRef(a);
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}
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private static void testGlobal() {
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int[] a = (int[]) readGlobalRef();
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checkArray(a, 1337);
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}
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private static void testWeakGlobal() {
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int[] a = (int[]) readWeakGlobalRef();
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if (a != null) {
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checkArray(a, 8080);
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} else {
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// weak reference is cleaned, recreate:
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seedWeakGlobalRef();
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}
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}
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private static void fillArray(int[] array, int seed) {
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Random r = new Random(seed);
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for (int i = 0; i < ARRAY_SIZE; i++) {
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array[i] = r.nextInt();
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}
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}
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private static void checkArray(int[] array, int seed) {
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Random r = new Random(seed);
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if (array.length != ARRAY_SIZE) {
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throw new IllegalStateException("Illegal array length: " + array.length + ", but expected " + ARRAY_SIZE);
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}
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for (int i = 0; i < ARRAY_SIZE; i++) {
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int actual = array[i];
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int expected = r.nextInt();
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if (actual != expected) {
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throw new IllegalStateException("Incorrect array data: " + actual + ", but expected " + expected);
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}
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}
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}
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}
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