102 lines
3.2 KiB
Java
102 lines
3.2 KiB
Java
/*
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* Copyright (c) 2019, 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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package gc.epsilon;
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/**
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* @test TestArraycopyCheckcast
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* @requires vm.gc.Epsilon
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* @summary Epsilon is able to handle checkcasted array copies
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* @library /test/lib
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* @bug 8215724
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*
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* @run main/othervm -Xmx256m
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* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
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* gc.epsilon.TestArraycopyCheckcast
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*
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* @run main/othervm -Xmx256m
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* -Xint
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* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
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* gc.epsilon.TestArraycopyCheckcast
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*
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* @run main/othervm -Xmx256m
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* -Xbatch -Xcomp -XX:TieredStopAtLevel=1
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* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
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* gc.epsilon.TestArraycopyCheckcast
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*
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* @run main/othervm -Xmx256m
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* -Xbatch -Xcomp -XX:-TieredCompilation
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* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
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* gc.epsilon.TestArraycopyCheckcast
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*/
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public class TestArraycopyCheckcast {
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static int COUNT = Integer.getInteger("count", 1000);
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public static void main(String[] args) throws Exception {
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Object[] src = new Object[COUNT];
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Object[] dst = new B[COUNT];
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// Test 1. Copy nulls, should succeed
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try {
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System.arraycopy(src, 0, dst, 0, COUNT);
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} catch (ArrayStoreException e) {
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throw new IllegalStateException("Should have completed");
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}
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// Test 2. Copying incompatible type, should fail
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for (int c = 0; c < COUNT; c++) {
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src[c] = new A();
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}
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try {
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System.arraycopy(src, 0, dst, 0, COUNT);
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throw new IllegalStateException("Should have failed with ArrayStoreException");
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} catch (ArrayStoreException e) {
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// Expected
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}
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// Test 3. Copying compatible type, should succeeded
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for (int c = 0; c < COUNT; c++) {
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src[c] = new C();
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}
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try {
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System.arraycopy(src, 0, dst, 0, COUNT);
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} catch (ArrayStoreException e) {
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throw new IllegalStateException("Should have completed");
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}
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for (int c = 0; c < COUNT; c++) {
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if (src[c] != dst[c]) {
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throw new IllegalStateException("Copy failed at index " + c);
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}
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}
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}
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static class A {}
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static class B extends A {}
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static class C extends B {}
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}
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