test/hotspot/jtreg/runtime/Safepoint/TestAbortOnVMOperationTimeout.java

/*
 * Copyright (c) 2018, 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
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 *
 * 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.
 *
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import jdk.test.lib.*;
import jdk.test.lib.process.*;

/*
 * @test TestAbortOnVMOperationTimeout
 * @bug 8181143 8269523 8307653
 * @summary Check abort on VM timeout is working
 * @requires vm.flagless
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver TestAbortOnVMOperationTimeout
 */

public class TestAbortOnVMOperationTimeout {

    // A static array is unlikely to be optimised away by the JIT.
    static Object[] arr;

    public static void main(String[] args) throws Exception {
        if (args.length > 0) {
            arr = new Object[10_000_000];
            for (int i = 0; i < arr.length; i++) {
               arr[i] = new Object();
            }
            // Try to force at least one full GC cycle.
            System.gc();
            return;
        }

        // This should definitely pass: more than 3 minutes is enough for Serial to act.
        // The value is deliberately non-round to trip off periodic task granularity.
        testWith(183423, true);

        // These should fail: Serial is not very fast but we have seen the test
        // execute as quickly as 2ms!
        for (int delay : new int[]{0, 1}) {
            testWith(delay, false);
        }
    }

    public static void testWith(int delay, boolean shouldPass) throws Exception {
        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
                "-XX:+UnlockDiagnosticVMOptions",
                "-XX:+AbortVMOnVMOperationTimeout",
                "-XX:AbortVMOnVMOperationTimeoutDelay=" + delay,
                "-Xmx256m",
                "-XX:+UseSerialGC",
                "-XX:-CreateCoredumpOnCrash",
                "-Xlog:gc*=info",
                "TestAbortOnVMOperationTimeout",
                "foo"
        );

        OutputAnalyzer output = new OutputAnalyzer(pb.start());
        if (shouldPass) {
            output.shouldHaveExitValue(0);
        } else {
            output.shouldContain("VM operation took too long");
            output.shouldNotHaveExitValue(0);
        }
        output.reportDiagnosticSummary();
    }
}