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/*
* Copyright (c) 2021, 2023, Oracle and/or its affiliates. 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
* @bug 8267118
* @summary Test catching Throwable doesn't trigger OOME
* @requires vm.flagless
* @library /test/lib
* @run driver TestCatchThrowableOOM
*/
import java.util.HashMap;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestCatchThrowableOOM {
private static String[] expected = new String[] {
"Test starting ...",
"Test complete",
"Exception <a 'java/lang/OutOfMemoryError'", // from logging
};
public static void main(String[] args) throws Throwable {
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xmx64m",
"-Xlog:exceptions=trace",
"TestCatchThrowableOOM$OOM");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldHaveExitValue(0);
for (String msg : expected) {
output.shouldContain(msg);
}
}
static class OOM {
private static HashMap<Object, Object> store = new HashMap<>();
public static void main(String[] args) {
System.out.println(expected[0]);
try {
// Keep adding entries until we throw OOME
while (true) {
Object o = new Byte[100 * 1024];
store.put(o, o);
}
} catch (Throwable oome) {
store = null;
System.gc(); // Just for good measure
System.out.println(expected[1]);
}
}
}
}
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