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/*
* Copyright (c) 2019, Red Hat, Inc. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test TestArraycopyCheckcast
* @key gc
* @requires vm.gc.Epsilon & !vm.graal.enabled
* @summary Epsilon is able to handle checkcasted array copies
* @library /test/lib
* @bug 8215724
*
* @run main/othervm -Xmx256m
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* TestArraycopyCheckcast
*
* @run main/othervm -Xmx256m
* -Xint
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* TestArraycopyCheckcast
*
* @run main/othervm -Xmx256m
* -Xbatch -Xcomp -XX:TieredStopAtLevel=1
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* TestArraycopyCheckcast
*
* @run main/othervm -Xmx256m
* -Xbatch -Xcomp -XX:-TieredCompilation
* -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
* TestArraycopyCheckcast
*/
import java.util.Random;
public class TestArraycopyCheckcast {
static int COUNT = Integer.getInteger("count", 1000);
public static void main(String[] args) throws Exception {
Object[] src = new Object[COUNT];
Object[] dst = new B[COUNT];
// Test 1. Copy nulls, should succeed
try {
System.arraycopy(src, 0, dst, 0, COUNT);
} catch (ArrayStoreException e) {
throw new IllegalStateException("Should have completed");
}
// Test 2. Copying incompatible type, should fail
for (int c = 0; c < COUNT; c++) {
src[c] = new A();
}
try {
System.arraycopy(src, 0, dst, 0, COUNT);
throw new IllegalStateException("Should have failed with ArrayStoreException");
} catch (ArrayStoreException e) {
// Expected
}
// Test 3. Copying compatible type, should succeeded
for (int c = 0; c < COUNT; c++) {
src[c] = new C();
}
try {
System.arraycopy(src, 0, dst, 0, COUNT);
} catch (ArrayStoreException e) {
throw new IllegalStateException("Should have completed");
}
for (int c = 0; c < COUNT; c++) {
if (src[c] != dst[c]) {
throw new IllegalStateException("Copy failed at index " + c);
}
}
}
static class A {}
static class B extends A {}
static class C extends B {}
}
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