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/*
* Copyright (c) 2017, 2025, 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.
*/
package gc.epsilon;
/**
* @test TestDieWithHeapDump
* @requires vm.gc.Epsilon
* @summary Epsilon GC should die on heap exhaustion with error handler attached
* @library /test/lib
* @run driver gc.epsilon.TestDieWithHeapDump
*/
import java.io.*;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestDieWithHeapDump {
public static void passWith(String... args) throws Exception {
OutputAnalyzer out = ProcessTools.executeTestJava(args);
out.shouldNotContain("OutOfMemoryError");
out.shouldHaveExitValue(0);
}
public static void failWith(String... args) throws Exception {
ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(args);
Process p = pb.start();
OutputAnalyzer out = new OutputAnalyzer(p);
out.shouldContain("OutOfMemoryError");
if (out.getExitValue() == 0) {
throw new IllegalStateException("Should have failed with non-zero exit code");
}
String heapDump = "java_pid" + p.pid() + ".hprof";
if (!new File(heapDump).exists()) {
throw new IllegalStateException("Should have produced the heap dump at: " + heapDump);
}
}
public static void main(String[] args) throws Exception {
passWith("-Xmx64m",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseEpsilonGC",
"-Dcount=1",
"-XX:+HeapDumpOnOutOfMemoryError",
TestDieWithHeapDump.Workload.class.getName());
failWith("-Xmx64m",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseEpsilonGC",
"-XX:+HeapDumpOnOutOfMemoryError",
TestDieWithHeapDump.Workload.class.getName());
failWith("-Xmx64m",
"-Xint",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseEpsilonGC",
"-XX:+HeapDumpOnOutOfMemoryError",
TestDieWithHeapDump.Workload.class.getName());
failWith("-Xmx64m",
"-Xbatch",
"-Xcomp",
"-XX:TieredStopAtLevel=1",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseEpsilonGC",
"-XX:+HeapDumpOnOutOfMemoryError",
TestDieWithHeapDump.Workload.class.getName());
failWith("-Xmx64m",
"-Xbatch",
"-Xcomp",
"-XX:-TieredCompilation",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseEpsilonGC",
"-XX:+HeapDumpOnOutOfMemoryError",
TestDieWithHeapDump.Workload.class.getName());
}
public static class Workload {
static int COUNT = Integer.getInteger("count", 1_000_000_000); // ~24 GB allocation
static volatile Object sink;
public static void main(String... args) {
for (int c = 0; c < COUNT; c++) {
sink = new Object();
}
}
}
}
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